Echotel Model 350/351

Transcription

1 Echotel Model 350/351 Installation and Operating Manual Ultrasonic Non-Contact Level Transmitter

2 Read this Manual Before Installing This manual provides information on the Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter. It is important that all instructions are read carefully and followed in sequence. Detailed instructions are included in the Installation section of this manual. Conventions Used in this Manual Certain conventions are used in this manual to convey specific types of information. General technical material, support data, and safety information are presented in narrative form. The following styles are used for notes, cautions, and warnings. Notes Notes contain information that augments or clarifies an operating step. Notes do not normally contain actions. They follow the procedural steps to which they refer. Cautions Cautions alert the technician to special conditions that could injure personnel, damage equipment, or reduce a component s mechanical integrity. Cautions are also used to alert the technician to unsafe practices or the need for special protective equipment or specific materials. In this manual, a caution box indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. Warnings Warnings identify potentially dangerous situations or serious hazards. In this manual, a warning indicates an imminently hazardous situation which, if not avoided, could result in serious injury or death. Safety Messages The Echotel Model 350/351 is designed for use in Category II, Pollution Degree 2 installations. Follow all standard industry procedures for servicing electrical and computer equipment when working with or around high voltage. Always shut off the power supply before touching any components. Although high voltage is not present in this system, it may be present in other systems. Electrical components are sensitive to electrostatic discharge. To prevent equipment damage, observe safety procedures when working with electrostatic sensitive components. This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. WARNING! Explosion hazard. Do not connect or disconnect equipment unless power has been switched off or the area is known to be non-hazardous. Low Voltage Directive For use in Category II installations. If equipment is used in a manner not specified by manufacturer, protection provided by equipment may be impaired. Notice of Trademark, Copyright, and Limitations Echotel is a registered tradename of Magnetrol International. Copyright 2004 Magnetrol International, Incorporated. All rights reserved. Magnetrol/STI reserves the right to make changes to the product described in this manual at any time without notice. Magnetrol/STI makes no warranty with respect to the accuracy of the information in this manual. Warranty All Magnetrol/STI 350/351 Ultrasonic Non-Contact Level Transmitters are warranted free of defects in materials or workmanship for one full year from the date of original factory shipment. If returned within the warranty period; and, upon factory inspection of the control, the cause of the claim is determined to be covered under the warranty; then, Magnetrol/STI will repair or replace the control at no cost to the purchaser (or owner) other than transportation. Magnetrol/STI shall not be liable for misapplication, labor claims, direct or consequential damage or expense arising from the installation or use of equipment. There are no other warranties expressed or implied, except special written warranties covering some Magnetrol/STI products. Quality Assurance The quality assurance system in place at Magnetrol/STI guarantees the highest level of quality throughout the company. Magnetrol/STI is committed to providing full customer satisfaction both in quality products and quality service. Magnetrol s quality assurance system is registered to ISO 9001 affirming its commitment to known international quality standards providing the strongest assurance of product/service quality available.

3 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter Table of Contents 1.0 Installation 1.1 Unpacking Mounting Unit Mounting Location General Unit Mounting Requirements Remote Transmitter Mounting Procedure Sensor Mounting Procedure Remote Sensor Cabling Electrostatic Discharge (ESD)Handling Procedure Wiring Power Wiring Sensor Wiring (Model 351 Remote Only) ma Output Signal Wiring Set Up and Operation 2.1 User Interface Main Menu Layout General Set Up Procedures Mode of Operation Height or Distance Selection Height Mode Distance Mode Special Menus Mode Selection Loop Current Check Service Menu Reference Information 3.1 Description Principle of Operation Troubleshooting Loss Displayed Output Not Tracking Level Agency Approvals Specifications Electronic Transducer Performance Model 350 Dimensional Model 351 Dimensional Replacement Parts Parts Identification Sensors 350 Integral Sensors 351 Remote Model Numbers Model 350 Integrally Mounted Level Transmitter Model 351 Remote Mounted Level Transmitter Connecting Cable Model 395 Remote Mounted Transducer..23 NOTES...24

4 1.0 Installation Caution: Please read the entire installation section carefully prior to starting installation. 1.1 Unpacking Unpack the instrument carefully. Make sure all components have been removed from the packing material. Inspect all components for damage. Report any concealed damage to the carrier within 24 hours. Check the contents of the packing slip and report any discrepancies to the factory. Check the nameplate model number to be sure it agrees with the packing slip and purchase order. Check and record the serial number for future reference when ordering parts. 1.2 Mounting Unit Mounting Location The level transmitter should be mounted in a location that permits easy access for maintenance. Avoid locations that are exposed to direct sunlight, flooding, high levels of radiated electromagnetic interference, and excessive vibration or shock. Model 350/351 sensors must be mounted directly over the material to be measured. This may be accomplished with the NPT mounting. 12" (305) Dead Zone Proper mounting and wiring of this ultrasonic unit is of utmost importance. Accuracy can be adversely affected if the sensor is mounted off axis, or where obstacles exist between the sensor face and the liquid surface. Range Span Max. LIQUID Figure 1 Transducer Dead Zone NOTE: The 350/351 requires a dead zone distance between the bottom of the sensor and the maximum level of material to be measured. Minimum dead zone = 12 inches (305 mm). Maximum dead zone should be limited to about 10 ft (3 meters) as this blanking distance is extended at the expense of the useful span over which the instrument operates satisfactorily. At temperatures greater than +140 F (+60 C) the minimum dead zone is extended to 18 inches (457 mm) Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

5 Standpipe Maximum 12" (305 mm) or less 8" (203) Minimum I.D. 2" NPT Transducer This end welded or flanged Figure 2 Sensor Mounting in Standpipes General Unit Mounting Requirements 1. Make sure that there are no obstructions between the face of the sensor and the liquid level. Ultrasonic energy radiates from the sensor face in a cone-shaped beam of approximately 12 width (diameter). Any object within the signal's path may produce an echo that can mask the true echo returned by the liquid surface. 2. Position the sensor so that the radiating surface or sensor face is exactly parallel to the target surface. This will provide the strongest return signals and enhance the reliability of the 350/ In applications where the material level can reach the top of the tank, the sensor portion of the unit must be mounted in a short, flanged standpipe. The diameter of the standpipe should be at least 8 inches (203 mm) and its length should be limited to 12 inches (305 mm). Refer to Figure Avoid installing the sensor in tank top openings that exhaust heated air or vapors. The boundaries between the vapors and the outside air often represent acoustic impedance gradients that can cause troublesome sound reflections. In those installations, the sensor should be mounted well away from the opening inside the tank, or in a standpipe as illustrated here. Refer to Figure Remote Transmitter Mounting Procedure Remote mount Model 351 transmitters should be mounted in a location that permits easy access for maintenance. Avoid locations that are exposed to direct sunlight, flooding, high levels of radiated electromagnetic interference, and excessive vibration or shock. 1. Mount the enclosure to a wall or flat surface using appropriate screws or bolts. A remote mounting bracket is available from the factory, if required. Refer to mounting hole pattern as shown in the dimensional drawing on page 18. Figure 3 Sensor Mounting for Tanks with Exhaust 2. Provide watertight seals for all wiring entrances into the enclosure. 3. Install conduit for power and control wiring. Be sure all connections to the enclosure maintain the proper NEMA rating. 4. Be sure to replace housing cover before proceeding to sensor mounting Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 2

6 1.2.4 Sensor Mounting Procedure NOTE: Be sure the sensor location meets the requirements discussed under Section 1.2.2, General Unit Mounting Requirements. 1. Position sensor over the tank opening. Install the 3 4" NPT or 2" NPT sensor in the tank fitting, flange, or mount with an optional mounting bracket. Pipe thread compound is recommended on stainless steel sensors. Caution: Unit should only be hand-tightened into the process connection. The wrench flats should only be used when removing the unit. Overtightening will cause transducer errors and will void the warranty Remote Sensor Cabling 1. Remote mount Model 351 units require installation of a watertight conduit from the sensor to the transmitter enclosure. 2. Carefully pull the coaxial cable and temperature cable attached to the sensor through the conduit to the transmitter. Caution: Avoid excessive twisting of both the sensor and temperature cables. NOTE: In high humidity applications, it is recommended that the sensor wiring be completely immersed in an insulating compound where the conduit connects to the sensor. (3M #4441 Gella Re-enterable Encapsulating Compound or equivalent). 1.3 Electrostatic Discharge (ESD) Handling Procedure Magnetrol s electronic instruments are manufactured to the highest quality standards. These instruments utilize electronic components which may be damaged by static electricity present in most work environments. The following steps are recommended to reduce the risk of component failure due to electrostatic discharge: 1. Ship and store circuit boards in anti-static bags. If an antistatic bag is not available, wrap board in aluminum foil. Do not place boards on foam packing materials. 2. Use a grounding wrist strap when installing and removing circuit boards. A grounded workstation is also recommended. 3. Handle printed circuit boards only by the edges. Do not touch components or connector pins. 4. Ensure that all electrical connections are completely made and none are partial or floating. Ground all equipment to a good, earth ground Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

7 Power GND AC Hot AC Neutral V out Ref. Loop + Loop Green Head Screw, Protective Ground 1.4 Wiring Power Wiring NOTE: Before connecting the power line to the transmitter, be sure that the voltage identification on the nameplate matches the power supply. DO NOT attempt to operate this unit at voltages other than as identified as it will damage the unit. Refer to Figure 4. NOTE: Ensure power is off before proceeding. 1. Remove housing cover and terminal strip cover. 2. No. 14 AWG wire size is the recommended maximum size for power wiring. The power and analog output terminal strips are marked for proper identification. 3. Bring wires into housing. Figure 4 Transmitter Wiring 4. Attach earth ground to housing base using the green head screw. 5. Run power leads to power terminal strip on PC board. 6. Dress wiring to ensure no interference or contact with cover or circuit board components. Caution: Observe all applicable electrical codes and proper wiring procedures. 7. Prevent moisture seepage into the enclosure by installing approved seal-drain fittings in the conduit run leading to the unit. 8. Replace terminal strip cover and housing cover. TB2 Sensor Cable Temp. Cable X1 Gnd + Figure 5 Sensor Wiring Sensor Wiring (Model 351 Remote Only) The sensor contains two cables which must be connected to the transmitter. The sensor cable is the round coaxial cable which consists of a center coaxial conductor and a shield wrapped around it. The temperature cable is a twisted pair. NOTE: A minimal length of insulation should be cut off the sensor cabling to limit contact of the bare wires with the PC board. 1. Connect center conductor of sensor cable to X1 position on TB2 on the amplifier PC board in the transmitter. 2. Connect shield of sensor cable to GND of TB2. 3. Connect black wire of temperature cable, (twisted pair), to negative ( ) TEMP terminal of TB2. Refer to Figure The other wire from twisted pair, (red or white), is connected to positive (+) TEMP terminal of TB Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 4

8 NOTE: If sensor housing is provided, only use connecting cable ordered from the factory. Use of cables not provided by the factory may void the warranty ma Output Signal Wiring The 4 20 ma output connections are made by loosening the screws at the output connections terminal strip, inserting the wires with spade lugs and tightening the screws. Refer to Figure 4. The loop is optically isolated, has non-grounded outputs, and can drive a 1000 ohm load. Recommended wire is 22 gauge, twisted shielded pair. Shield and black wire should be terminated at the ( ) output terminal. The shield should be floating at the driven device. 1. Bring wires into housing. 2. Connect output wires to appropriate terminals. 3. Replace terminal strip cover. 4. Replace housing cover. 2.0 Set Up and Operation LED Display 2.1 User Interface The Model 350/351 Transmitter can be programmed for a variety of level control applications. Configuration data is entered via three tactile-feedback push buttons located on the circuit board under the cover of the enclosure (see Figure 6). The push buttons and their functions are shown below. Upon power up, the LED will display the following message: MAGNETROL INT L followed by a series of walking dots as follows:..., or one of the chosen displays. NOTE: The 350/351 is able to display a choice of four display modes. This display may be changed by accessing the Special Menus described on pages 12 and 13. Figure 6 User Interface IDLE DIST LEVL LOOP MAGNETROL INT L (Preferred Mode) Displays distance in run condition Displays tank level in run condition Displays current output UP/RAISE Used to scroll up through menu selections or raise numeric values. Holding down for a few seconds will increase the rate of change Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

9 DOWN/LOWER Used to scroll down through menu selections or lower numeric values. Holding down for a few seconds will increase the rate of change. ER Used to select displayed value and to continue to next menu selection. 2.2 Main Menu Layout PRESS TO BEGIN UNIT FEET (XX.X) INCH (XXX.) M (X.XX CM (XXX.) MM (XXXX) RNGE MANL XXX. AUTO XXX. SPAN MANL XXX. AUTO XXX. ~ (1*) ~ ~ (2*) ~ SET? : Saves parameters in memory: SAFE 4 ma (output on failure) 20 ma (output on failure) LAST (hold last value) DIST XXX. ANY KEY LEVL XXX. SGNL XX% ANY KEY LOOP XX.X ANY KEY RUN? Normal display as selected in Initialization Menu. UNIT 1* Path followed if no change is made to range or span. 2* Path followed if range or span is altered Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 6

10 2.3 General Set Up Procedures Caution: After completing the Installation/Wiring sections (pages 1 5) and studying the Main Menu Layout (page 6), power up the unit. Power the Model 350/351 and perform all calibration in a non-hazardous area. There are nine steps in the initial set up. All nine steps must be accessed in order to provide optimum control for your application. After the initial set up, any of the nine programmable functions can be accessed without powering down the unit. All set up procedures are written based on the HEIGHT Mode selection. Refer to Section 2.4.1, Height or Distance Selection on page 11. If using the DISTANCE Mode, all measurements are taken from the sensor face. NOTE: It is recommended that the user determine the values to be programmed into the unit prior to entering values using the keypad. This is due to a security feature which places a 30 second time limitation in various stages of the menu. If a time out occurs during parameter selection, the unit assumes the previous value for that parameter, continues to control under those values and will revert to the display mode selected from the Special Menu. Refer to page 12. If a time out occurs during span selection, the range as well as span will revert to the previous setting. All set up procedures are written based on the IDLE display mode as the unit shipped from the factory. The DIST, LEVL, or LOOP display modes may be chosen at any time. Refer to Section 2.5, Special Menus on page 12. Upon power up, the unit will display the normal operating message followed by the walking dots as follows: MAGNETROL INT L... STEP 1 To enter into the menu, press the key. The display will read UNIT. UNIT is the unit of measurement used for all calculations and display within the 350/351. Press a second time to display the current units selected. To change UNITS, use the or arrow key to scroll through the UNIT selections. Press to select the displayed UNIT desired. The display will now read UNIT once again. Press the push button to proceed to STEP 2 RANGE (RNGE) Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

11 STEP 2 RANGE (RNGE) (4 ma) Range is the distance from the face or the bottom of the transducer to the farthest point to be measured. The maximum range for the Model 350/351 is approximately 25 feet (7.6 m). With RNGE displayed, press to continue. The display will read MANL for manual entry of the range value. Use either the or key to toggle between MANL and AUTO. If MANL is selected, press to display the current operating value. Use the or keys to raise or lower the numeric value. Holding down the keys for several seconds will increase the rate at which the values are changed. When the desired value is displayed, press the key to accept this value and to exit RANGE. Selecting AUTO will allow for the 350/351 to actually measure the distance between the face of the transducer and the current liquid level. This selection can be used as a convenience when the level of the material being measured is at a desired minimum level. Press to display the current range. There is no time limitation in this selection. Press once again to accept the value and to exit RANGE. Press the key to proceed to STEP 3 SPAN (SPAN). NOTE: When using the AUTO mode in range or span, the 350/351 must first be manually programmed with values for range and span which are larger than the expected values. This allows the 350/351 to automatically measure the correct values within the programmed window of accepted signals. STEP 3 SPAN (SPAN) Span is the difference between the lowest level (empty tank) and the desired maximum level. Maximum span is the range value, less the 12" dead zone in which measurement cannot take place. With SPAN displayed on the LED, press to display MANL for manual entry of the span value. Use either the or key to toggle between MANL and AUTO. If MANL is selected, press to display the current operating value. Use the or key to raise or lower the numeric value. When the desired value is displayed, press the key to accept this value and to exit SPAN. Selecting AUTO will allow the 350/351 to actually measure the distance between the face of the transducer and the current material level, and calculates the span based on that measurement. This selection is used in applications when the level of the material being measured is at a desired maximum level. Press to display SPAN VALUE Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 8

12 NOTE: There is no time limitation in this selection. If OVER or UNDR flashes, an illegal parameter has been selected. Review range values and re-enter the correct value. Press once again to accept this value and to exit SPAN. Press the key to proceed to STEP 4 SAFE. STEP 4 FAIL-SAFE (SAFE) SAFE is designated as the fail-safe condition of the transmitted output and the desired condition of the output in the event of a loss of echo for 30 seconds or more. The user has a choice to drive the unit to 4 ma, 20 ma, or to remain at the LAST value. Press to display the last chosen fail-safe condition. Press or arrow until desired fail-safe condition is displayed. Press to accept the setting. Press the arrow to proceed to STEP 5 DISTANCE (DIST). Caution: If the actual level falls below the maximum range of the unit, the fail-safe selection must be set up so that the desired output is transmitted. When the level falls below the programmed range, the display will show LOSS. If this condition occurs, the fail-safe actions will take place. WARNING: If level exceeds the programmed span, false display or output/control errors will occur. Sensor should be installed and unit programmed to assure that this level condition cannot occur. STEP 5 DISTANCE (DIST) Distance is the measurement from the face or the bottom of the transducer to the level of the material being measured. This step is a read only display, meaning a continuous display of distance in the units selected in STEP 1. There is no time limitation in this step. When DIST is displayed, press to display the distance. Press any key to exit DIST and press the key to continue to STEP 6 LEVEL (LEVL). STEP 6 LEVEL (LEVL) Level is the measurement from the bottom of the level span to the actual level of the material being measured. This step is a read only display, continuously displaying the level within the tank or vessel in the units of measurement selected in STEP 1. There is no time limitation in this step. When LEVL is displayed, press to display the level. Press any key to exit LEVL and press the key to continue to STEP 7 SIGNAL (SGNL) Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

13 STEP 7 SIGNAL (SGNL) Signal refers to the strength of the signal being received from the surface level of the material being measured. With SGNL displayed, press to display the signal strength. There is no time limitation in this step. The representation of the signal strength is displayed in a value from 0 100% in 5% steps. Ideally the reading should be between 40 95%. If the readings are less than 25%, improper alignment or poor installation procedures may be the cause. Contact factory for assistance. If the reading is within the acceptable range, press any key to exit SGNL and press the key to continue to STEP 8 LOOP (LOOP). STEP 8 LOOP (LOOP) Loop is a continuous display of the actual loop output ma current. The display is limited to 3 characters and a decimal point. The 350/351 uses a D/A converter with 8 bit resolution, and divides the operating distance (SPAN in Height Mode, RANGE SPAN in Distance Mode) into 256 equal steps, each corresponding to a step change in current. Therefore the smallest step change in current is (20 4)/256 = ma. (Refer to Height/Distance Selection for more information on resolution of output or current). With LOOP displayed, press to display the actual loop value. Any key will exit LOOP and press the key to continue to STEP 9 RUN (RUN?). STEP 9 RUN (RUN?) This is the end of the GENERAL SET UP PROCEDURES and provides the operator the opportunity to check previous settings before leaving the main menu. Returning to the normal operating mode is accomplished by pressing. MAGNETROL INT L... will then be displayed, or the previous chosen display (DIST, LEVL, or LOOP) as described in Section 2.5, Special Menus on page Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 10

14 2.4 Mode of Operation Height or Distance Selection The Model 350/351 allows the user to choose the MODE of Operation, HEIGHT, (HGT) or DISTANCE (DIST). This choice is made in a special SET-UP menu which is accessed by pressing the button three times from the normal run condition. The Model 350/351 responds by displaying MODE. Press to display either HGT for HEIGHT mode or DIST for DISTANCE mode. The and buttons allow the user to change the mode. Press to accept the displayed mode. NOTE: Almost all level applications are configured in the HEIGHT mode Height Mode The HEIGHT mode will provide a 4 ma output when the monitored fluid level is at the bottom of the tank, at the distance defined by the RANGE setting which the customer has chosen. The current output at the top of the tank, as defined by the customer programmed SPAN, is 20 ma. The output current that the 350/351 provides at levels between the bottom and top of the tank is determined by an 8 bit D/A converter. This divides the programmed operating distance into 256 equal steps, each of which has its own predefined output current. This 8 bit D/A conversion is the limiting factor in the resolution of the current loop. The resolution is the programmed SPAN/256. At the maximum SPAN of 24 feet (7.3 m), the resolution is inches (29 mm). Resolution is improved in normal operation with a more limited operating distance. For example, if a 10 foot (3 m) SPAN is chosen, the resolution is less than 1 2" (12 mm) and at 2 feet (0.6 m), the resolution is less than 1 8" (3 mm). Therefore the resolution is dependent on the SPAN selected for the particular application Distance Mode The DISTANCE mode allows the RANGE and SPAN to be programmed as the distance from the face of the transducer. The distance mode is typically only used for demonstration or diagnostic purposes, as opposed to level measurement. NOTE: The resulting loop current output in this mode is reversed from the HEIGHT Mode. When setting these parameters, be sure all values are calculated based on the same MODE of Operation Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

15 In the DISTANCE Mode, when the liquid level is at the bottom of the tank, defined by the RANGE setting, the loop output current is 20 ma. When the liquid is at the top of the tank, as defined by the SPAN set point, measured from the sensor face, the output is 4 ma. 2.5 Special Menus The Special Menus allow setting of the mode of operation, maximum gain, and the desired default display in the run condition. Shown below is the menu screen: MODE DIST HGT MAXG 44 DISP IDLE DIST LEVL LOOP COMM HOST ADDR 00 TERM OFF BAUD UNIT Mode Selection The Mode selection is accessed by pressing the button three times from the normal display mode or RUN. The unit will display MODE. Press to display present mode (HGT or DIST). Use the or keys to choose desired mode. Refer to Section 2.4, Mode of Operation for additional information. NOTE: In the DISTANCE Mode, all values of range and span are measured from the sensor face instead of the reference point or range point. Although distance selection is measured from the sensor face, the output can only be set between the SPAN and RANGE. Changing MODE will reset range and span. All set-up procedures must be repeated if MODE is changed Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 12

16 Press and unit will display normal run condition if mode was changed. If the mode of operation is not changed, the display will show the next selection MAXG (Maximum Gain Limit). Press to display current maximum gain limit. The factory default valve for MAXG is 44. Use the and arrow to change limit. Press to save maximum gain value and exit MAXG. IDLE DIST LEVL LOOP MAGNETROL INT L Displays distance in run condition Displays tank level in run condition Displays ma current value Use the or arrow to select and press and then the arrow to exit and return to the normal operating mode. NOTE: The COMM menu is not used Loop Current Check This mode is accessed by pressing normal display mode or RUN. four times from the The unit will display LOOP. The LOOP set up allows the output current loop to be driven to 4 ma or 20 ma regardless of the monitored fluid level. This feature is especially beneficial for customer setup of new systems with the 350/351 as the loop driver. Press to exit LOOP and to display UNIT Service Menu SRVC GAIN TEMP XXXX If in the event of a problem with the Model 350/351, it may be necessary to access the Service Menu located within the unit. To access this menu, the keypad must be pressed two times while the unit is in the normal operating mode and displaying the MAGNETROL INT L message, or other chosen display. UNIT PEAK TOFF VERS When the button is depressed twice, SRVC will be displayed. Press to display either GAIN, TEMP, PEAK, TOFF or VERS. will display the value for each of the selections. Use the or key to scroll to the next parameter Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

17 NOTE: These values are read only parameters and cannot be changed by the operator. They are for reference use only, however, in the event of a question or problem with the 350/351, an authorized representative or service technician will request the values displayed in this menu. Become familiar with this Service Menu and the corresponding instructions in the event of the need to access this Special Menu. 3.0 Reference Information 3.1 Description Model 350/351 non-contact ultrasonic transmitters detect level in a wide variety of liquid level applications. The noncontact sensor may be mounted integrally or it may be mounted up to 100 feet (30 m) from the micro-processorbased electronics. All parameters are entered by means of an easy to use menu-based keypad housed within the unit. 3.2 Principle of Operation Pulses generated by the microprocessor-based electronics are directed via the sensor to the liquid surface. The returning echo signal is detected by the sensor. The microprocessor amplifies and converts the signal into a digital representation of the distance from the reflecting surface. A 4 20 ma output current loop is supplied providing the monitored level data to external control devices. All operating parameters are entered via three tactile-feedback push buttons and displayed on a four character LED display located under the transmitter cover. 3.3 Troubleshooting Loss ( LOSS ) Displayed 1. The transmitter will display LOSS when the level falls below the selected range value. Signal maintains fail-safe selection and will return to normal output when level returns to a value within selected range. Increase range if this is not desirable. 2. Echo lost. Check for surface foam, vapors or non-vertical (off center) mounting of sensor Output Not Tracking Level 1. Check for obstruction in tank causing false echo. 2. Incorrect calibration mode (HEIGHT/DISTANCE) Refer to Section 2.4.1, Height or Distance Selection on page 11. If unit was set up in the DISTANCE mode, change to the HEIGHT mode to verify transmitter performance Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 14

18 3.4 Agency Approvals AGENCY MODEL APPROVED APPROVAL CATEGORY APPROVAL CLASSES FM XX-000 or 351-R0XX-000 with 395-XXXX-0XX Non-hazardous NEMA 4X environments XX-05X or XX-05X Non-hazardous NEMA 4X environments XX-05E XX-05F Explosion Proof Class I, Div. 1; Groups C & D Class II, Div. 1; Groups E, F & G Class III, NEMA 4X, T6 395-XEXX-XXX Explosion Proof Class I, Div. 1; Groups B, C & D Class II, Div. 1; Groups E, F & G Class III, NEMA 4X, T6 CSA 395-XEXX XX-000 or 351-R0XX-000 with 395-XXXX-0XX Explosion Proof Non-hazardous Class I, Div. 1; Groups A, B, C & D Class II, Div. 1; Groups E, F & G Class III, NEMA 4X, T6 Type 4X environments XX-05X or XX-05X Non-hazardous Type 4X environments 351-X0XX-000 with 395-XX1X-0XX Non-incendive locations Class I, Div. 2; Groups A, B, C & D Class II, Div. 2; Groups E, F & G Class III, Type 4X XX-05E XX-05F XX-05E XX-05F Non-incendive locations Class I, Div. 2; Groups A, B, C & D Class II, Div. 2; Groups E, F & G Class III, Type 4X 351-R0XX-000 with 395-XE1X-0XX Explosion Proof Class I, Div. 1; Groups C & D Class II, Div. 1; Groups E, F & G Class III, Type 4X XX-05E or XX-05F Explosion Proof Class I, Div. 1; Groups C & D Class II, Div. 1; Groups E, F & G Class III, Type 4X 395-XE0X-0XX Explosion Proof Class I, Div. 1; Groups A, B, C & D Class II, Div. 1; Groups E, F & G Class III, Type 4X Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

19 3.5 Specifications Electronic Supply voltage 120 VAC or 240 VAC, Hz Power consumption 5 watts maximum Output (Controller) Two (2) SPDT 120/240 VAC relays, adjustable differential, 10 A resistive Output (Transmitter) 4 20 ma isolated, maximum 1000 ohm loop resistance Fail-safe (Controller) User selectable; on (energized) or off (de-energized) Fail-safe (Transmitter) User selectable; 4 ma, 20 ma, or hold last value Time delay (Controller) seconds adjustable for each relay set point Electronics -40 to +160 F (-40 to +71 C) Humidity 95% Non-condensing (electronics) Transducer Maximum range 25 feet (7.6 meters) from transducer face Span 2 inches (51 millimeters) minimum 24 feet (7.3 meters) maximum Frequency 50 khz Minimum dead zone 12 inches from -20 to 140 F (305 millimeters from -30 to +60 C) 18 inches from +140 to +160 F (457 millimeters from +60 to +71 C) Ambient temperature ➀ -20 to +160 F (-30 to +71 C) Temperature compensation Automatic over range of transducer operating temperature Operating pressure -10 to +50 psig (0.689 to bar) Beam angle 12 Conical Cable length 100 feet (30 meters) maximum between transducer and electronics ➀ Kynar and 316SS transducers temperature rating -20 F to +200 F (non-operational to +250 F) Performance Response time Repeatability Accuracy 1 second minimum ±0.125" (±3 mm) ±0.25% of full scale Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 16

20 3.5.4 Model 350 Dimensional inches (mm) A 3.25 (83) B 3.00 (76) Rotation Clearance Housing Legend A. NEMA 4X B. NEMA 4X/7/9 A 4.69 (119) B 4.62 (117) A 6.75 (200) B 5.50 (218) 3/4" MNPT (P/N ) 2" FNPT (P/N ) 3/4" NPT " FNPT 2" NPT Thread A 3.12 (79) B 4.00 (102) Optional Mounting Flange 6.00 (152) or (254) depending upon model (48) Floor Mount Bracket Model 350 Integral Mount Notes: 1. Allow 8 in. (203 mm) overhead clearance for removal of cover. 2. Do not attempt to disassemble transducer Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

21 3.5.5 Model 351 Dimensional inches (mm) 2 Holes.38 (10) Dia (51) 2.37 (60) 3.50 (89) Bracket front view 8.62 (219) 3.00 (76) 3.75 (95) 3.25 (83) Side view Model 351 Remote Mount (NEMA 4X) 3/4" NPT Conduit Connection 1/2" NPT (std.) or 3/4" NPT (opt.) Transducer/ Amplifier Cable Connection /4" MNPT (P/N ) 2" FNPT (P/N ) Wall Mount Bracket " NPT Optional Mounting Flange 4.63 (118) Dia (76) 3.00 (89) 2.75 (70) 3/4" NPT 3.00 (76), 6.00 (152) or (254) depending upon model 3/4" NPT 4.63 (118) Dia (76) 3/4" NPT 2.75 (70) 3.00 (89) 3.00 (76), 6.00 (152) or (254) depending upon model 3/4" NPT 3.00 (76) 3/4" NPT 6.00 (152) or (254) depending upon model 3/4" NPT 2" NPT 3.00 (76), 6.00 (152) or (254) depending upon model 2" NPT Sensor w/ Housing 395-5X10-00X Sensor w/ Housing 395-1X10-00X Sensor w/o Housing 395-1X00-00X 395-5X00-00X Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 18

22 3.6 Replacement Parts Parts Identification No. Description 350 Integral 351 Remote Transmitter Sensor 1 Base NEMA 4X N/A NEMA 4X/7/ NEMA 4X Lexane N/A 2 Cover NEMA 4X Steel N/A NEMA 4X/7/ O-Ring NEMA 4X N/A NEMA 4X/7/ Main PC Board Z N/A 5 Amplifier Board Z N/A 6 Voltage PC Board 120 VAC Z N/A 240 VAC Z N/A 7 RS-485 PC Board Z N/A 8 Sensor PC Board N/A Z Terminal Block Cover N/A 10 Bracket NEMA 4X N/A NEMA 4X/7/ Lexan is a registered trademark of General Electric Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

23 3.6 Replacement Parts (cont.) Sensors 350 Integral Sensor Material No. Connection Sensor Length Kynar/CPVC Kynar Stainless Steel 6" Z Z Z " 10" Z Z Z Sensors 351 Remote No. 12 Sensor Housing w/housing (short cables) w/o Housing (20 ft. of cables) Connection 3 4" NPT 2" NPT 3 4" NPT 2" NPT Sensor Sensor Material Length Kynar/CPVC Kynar Stainless Steel 3" Z Z Z " Z Z Z " Z Z Z " Z Z Z " Z Z Z " Z Z Z " Z Z Z " Z Z Z " Z Z Z " Z Z Z " Z Z Z " Z Z Z Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 20

24 3.7 Model Numbers Model 350 Integrally Mounted Level Transmitter BASIC MODEL NUMBER 350 Integrally mounted level transmitter HOUSING ➀ 5 Carbon steel cover, NEMA 4X rating, single 3 4" NPT conduit hub 6 Transparent Lexan `cover, NEMA 4X rating, single 3 4" NPT conduit hub 8 Cast aluminum cover, NEMA 4X/7/9 rating, dual 3 4" NPT conduit hubs ➀ All three housings have a cast aluminum base. INPUT VOLTAGE VAC VAC OUTPUT ma isolated SENSOR CODE 5 Standard TRANSDUCER C Kynar/CPVC, 6" (152 mm) length, 2" NPT D Kynar/CPVC, 10" (254 mm) length, 2" NPT E 316 SS, 6" (152 mm) length, 2" NPT F 316 SS, 10" (254 mm) length, 2" NPT K Kynar, 6" (152 mm) length, 2" NPT L Kynar, 10" (254 mm) length, 2" NPT Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

25 3.7.2 Model 351 Remote Mounted Level Transmitter BASIC MODEL NUMBER 351 Remote mounted level transmitter HOUSING ➀ 5 Carbon steel cover, NEMA 4X rating, single 3 4" NPT conduit hub 6 Transparent Lexan `cover, NEMA 4X rating, single 3 4" NPT conduit hub R Cast aluminum cover, NEMA 4X rating, dual 1" NPT conduit hubs ➀ All three housings have a cast aluminum base, INPUT VOLTAGE VAC VAC OUTPUT ma isolated Connecting Cable CABLE LENGTH IN FEET 10 feet (3 m) minimum, 100 feet (30 m) maximum length Example: 12 foot cable length = Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 22

26 3.7.4 Model 395 Remote Mounted Transducer BASIC MODEL NUMBER 395 Remote mounted transducer TRANSDUCER MATERIAL AND PROCESS CONNECTION 1C ➀ 5C 1K ➀ Kynar/CPVC with 3 4" NPT Kynar/CPVC with 2" NPT Kynar with 3 4" NPT 5K Kynar with 2" NPT 1E ➀ 5E 316 Stainless Steel with 3 4" NPT 316 Stainless Steel with 2" NPT ➀ The 3 4" NPT transducer when supplied with transducer housing code 1 does not have a process connection. Refer to transducer with housing illustration on page 7. TRANSDUCER HOUSING AND CABLE 0 No transducer housing comes with 20 feet (6 meters) of cable 1 Transducer housing cable ordered separately (page 10) MOUNTING BRACKET 0 None 1 Wall Mount with 3 4" NPT 2 Floor Mount with 3 4" NPT 3 Wall Mount with 2" NPT 4 Floor Mount with 2" NPT TRANSDUCER INSERTION LENGTH 003 3" (76 mm) 006 6" (152 mm) " (254 mm) Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

27 NOTES: Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 24

28 ASSURED QUALITY & SERVICE COST LESS Service Policy Owners of Magnetrol/STI controls may request the return of a control or any part of a control for complete rebuilding or replacement. They will be rebuilt or replaced promptly. Controls returned under our service policy must be returned by Prepaid transportation. Magnetrol/STI will repair or replace the control at no cost to the purchaser (or owner) other than transportation if: 1. Returned within the warranty period; and 2. The factory inspection finds the cause of the claim to be covered under the warranty. If the trouble is the result of conditions beyond our control; or, is NOT covered by the warranty, there will be charges for labor and the parts required to rebuild or replace the equipment. In some cases it may be expedient to ship replacement parts; or, in extreme cases a complete new control, to replace the original equipment before it is returned. If this is desired, notify the factory of both the model and serial numbers of the control to be replaced. In such cases, credit for the materials returned will be determined on the basis of the applicability of our warranty. No claims for misapplication, labor, direct or consequential damage will be allowed. Return Material Procedure So that we may efficiently process any materials that are returned, it is essential that a Return Material Authorization (RMA) number be obtained from the factory, prior to the material's return. This is available through Magnetrol/STI s local representative or by contacting the factory. Please supply the following information: 1. Company Name 2. Description of Material 3. Serial Number 4. Reason for Return 5. Application Any unit that was used in a process must be properly cleaned in accordance with OSHA standards, before it is returned to the factory. A Material Safety Data Sheet (MSDS) must accompany material that was used in any media. All shipments returned to the factory must be by prepaid transportation. All replacements will be shipped F.O.B. factory. NOTE: See Electrostatic Discharge Handling Procedure on page Belmont Road Downers Grove, Illinois Fax Jardin Drive, Units 1 & 2 Concord, Ontario Canada L4K 1X Fax Heikensstraat 6 B 9240 Zele, Belgium Fax Regent Business Ctr., Jubilee Rd. Burgess Hill, Sussex RH15 9TL U.K Fax Belmont Road Downers Grove, Illinois Fax Copyright 2004 Magnetrol International, Incorporated. All rights reserved. Printed in the USA. Magnetrol and Magnetrol logotype are registered trademarks of Magnetrol International. STI and STI logotype are registered trademarks of Magnetrol International. Performance specifications are effective with date of issue and are subject to change without notice. The brand and product names contained within this document are trademarks or registered trademarks of their respective holders. BULLETIN: EFFECTIVE: June 2004 SUPERSEDES: June 1997