1000TR. Instructions

Transcription

1 1000TR ph Instructions

2 CONTENTS 1. INTRODUCTION COMMON INTRODUCTION PARTS & ACCESSORIES INSTALLATION CASING MOUNTING ELECTRICAL INSTALLATION Connection of the power supply Connection of the electrode Connection of a temperature probe ( RTD Pt100 ) Connection of a recorder CHECK THE CONNECTIONS FUNCTIONS COMMON FUNCTIONS MEASURE CAL CAL CAL TEMP OUTPUT ALARM KEY FUNCTIONS PARAMETER SETTINGS DEFAULT SETTINGS PARAMETER SETTINGS Setting of the temperature compensation Set the output signal CALIBRATION OPERATION CHANGING THE PARAMETER SETTINGS Change the temperature compensation Change the output range MAINTENANCE HARDWARE CHECK PRE-CALIBRATION RESET OF DEFAULT SETTINGS TROUBLE SHOOTING SPECIFICATIONS

3 1. INTRODUCTION 1.1 COMMON INTRODUCTION 1000TR is a new CE-approved series of transmitters from Elmacron AB. In the series, there are instruments for ph, Redox%, Redox mv and temperature measurement. 1000TR is easy to program, calibrate and use. The layout on the instrument is clear; a large display with four LED-segments, diode indication for the menu and four large function keys. All settings are made through the function keys on the front panel. When connecting an electrode to 1000TR-pH the display shows the actual ph-value in the solution measured. Manual / Automatic temperature compensation is built-in to give the highest possible accuracy over the whole range. 1000TR-pH is provided with an isolated output 0/4-20 ma, proportional to the ph-value, for connection to, for example, a computer, printer or other recording equipment. When measuring is interrupted, the output stays frozen at the last measured value. 1.2 PARTS & ACCESSORIES 1000TR is delivered without connection cables and electrodes. Article Function Code number Power supply cord, standard Power supply 20-R Low noise coax cable with BNC-connection Connection of electrode/probe 60-T810-0xx* ( xx* = 01, 02, 03, 05, 07 or 10 meter ) Pt100-probe, glass. Type T2V12 Automatic temperature compensation 60-K ph-buffer 7.00, 500 ml Calibration of ph-electrode 90-T ph-buffer 4.00, 500 ml Calibration of ph-electrode 90-T ph-buffer 10.00, 500 ml Calibration of ph-electrode 90-T

4 2. INSTALLATION 2.1 CASING The casing is made of die-cast polystyrol with a transparent front cover that is closed with a snaplock. The connection terminals are located in a separate partition at the lower part of the transmitter. At the bottom of the instrument there are four cable glands ( two 15,2 and two 18,6 ) for the electrical connections. The protection class is IP MOUNTING The instrument is designed for wall mounting. Be sure that the instrument is mounted at a nonvibrating place. 1000TR is mounted vertically with two fastening screws ( 7) through the mounting brackets on the instrument. 2.3 ELECTRICAL INSTALLATION It is recommended that each instrument is provided with a separate power switch. The electrode coax cable must be protected by a screen and may not be installed near power cables. Avoid extension of cables. The connection terminals are located in a separate space at the lower part of the transmitter

5 2.3.1 Connection of the power supply Connect the power supply to terminal 1 (earth), terminal 2 (zero) and terminal 3 (live) Connection of the electrode Electrode cabling is a critical part of the whole system. Use a low noise coax cable between the electrode and the input terminal on the controller. Low noise cables has, in general, a black semi-conductive sheath between the centrewire insulation and the shield. Remove this sheath. Keep the cable away from power wires. Max recommended length of cable is 10 meters. Connect the shield ( reference ) of the coax cable to terminal 4 ( EL - ). Connect the centre ( glass electrode ) of the coax cable to terminal 5 ( EL + ) Connection of a temperature probe ( RTD Pt100 ) When automatic temperature compensation is configured, a Pt100-probe is connected to terminal 6, 7, 8 and 9 ( 1A, 1B, 1C and 1D ) Connection of 4-wire Pt Connection of 2-wire Pt100 The temperature sensor has to be installed in the same solution being measured, close to the electrode either in-line or in the tank. A pre-set calibration has to be done when installing a new Pt100- sensor ( see chapter 5.2 ). When manual temperature compensation is configured a 107 Ω-resistor is connected to the temperature input and a jumper is set between terminals as shown in the figure below Connection of a recorder Connect the recorder to terminal 10 ( REC + ) and terminal 11 ( REC - ). 2.4 CHECK THE CONNECTIONS Before the power supply is turned on; check that the connections are mechanical and electrical correct

6 3. FUNCTIONS 3.1 COMMON FUNCTIONS All settings are made through the function keys on the front panel. The keys + and are accelerating in three steps when they are kept pressed. Chosen function is indicated by a green diode in the menu, at alarm a red diode is activated at the same time as the diode at the actual function activates. When pressing M you step down in the menu. When calibration or setting mode is entered the output signal stays "frozen" at the latest value, until = is pressed. 3.2 MEASURE CAL. 1 CAL. 2 CAL. 3 TEMP. Offset High-buffer Low-buffer Aut./Man. 0/4-20 ma OUTPUT ALARM MEASURE When power supply is connected the measuring starts CAL. 1 Calibration point 1. Pre-set value: ph 7.00, other values can be chosen in the calibration mode CAL. 2 Calibration point 2. Pre-set value: ph 10.00, other values > ph 7.00 can be chosen in the calibration mode CAL. 3 Calibration point 3. Pre-set value: ph 4.00, other values < ph 7.00 can be chosen in the calibration mode TEMP. The instrument is provided with a choice between automatic and manual temperature compensation. The values shown when automatic temperature compensation is activated, the value is corresponding to the temperature 20 C. In manual compensation mode, the temperature is set by the operator OUTPUT Can be set to 0-20 ma or 4-20 ma. The function is scaleable

7 3.2.7 ALARM When an error occurs in the measuring mode, the alarm diode activates at the same time as the error code is shown on the display. At serious errors, the error code is flashing on the display. 3.3 KEY FUNCTIONS KEY FUNCTION 1 ( at parameter setting mode ) FUNCTION 2 ( in measuring mode ) Steps down the menu Accelerating key. Increase the value in setting mode. Used when making a choice according to the display. Interrupt measuring together with Accelerating key. Decrease the value in setting mode. Interrupt measuring together with Confirm performed settings and choices. Starts measuring

8 4. PARAMETER SETTINGS 4.1 DEFAULT SETTINGS When delivered, 1000TR have the following default settings. Output 0-20 ma Temperature compensation Manual, 20 C Offset ph = 7.00 Low-buffer ph = 4.00 High-buffer ph = Slope 100% ( 20 ) 4.2 PARAMETER SETTINGS All settings has to be confirmed with = to be saved. To leave the setting mode without saving the settings: press M. Before starting up the transmitter the following parameters has to be set: Temperature compensation and output range. Turn the power on Setting of the temperature compensation 4.2.1a) Manual temperature compensation For automatic temperature compensation, see b). 1. Interrupt the measuring by pressing + and at the same time until the measuring is interrupted and the diode at CAL.1 is activated. 2. Press M until the diode at TEMP. is activated. At the display: In--. Press = to confirm. 3. Set the correct temperature with + and -. Press = to confirm. The diode at OUTPUT activates and the display shows b) Automatic temperature compensation In automatic temperature compensation a Pt100 sensor has to be installed ( see chapter 2.3 for connection ). NOTE! Save the 107Ω resistor. A pre-calibration according to 5.2 has to be performed when a new Pt100 sensor is installed. 1. Interrupt the measuring by pressing + and at the same time until the measuring is interrupted and the diode at CAL.1 is activated. 2. Press M until the diode at TEMP. is activated. At the display: In Press + until the display shows Au--. Press = to confirm. The diode at OUTPUT activates and the display shows Set the output signal 1. Choose between 0-20 and 4-20 ma with Press = to confirm. 3. The display shows SPAn. Press = to confirm. 4. The display shows Set the ph-value corresponding to 0 (alt. 4) ma. 5. Press = to confirm. The display shows

9 6. Set the ph-value corresponding to 20 ma. Press = to confirm. 7. The diode at MEASURE is activated and the display shows Hold. 8. Press = to start the measurement. NOTE! The ph-values have to be set so that the 0/4 ma-level is corresponding to a lower value than the 20 ma value. In other cases the output signal stays at 0 ma. 4.3 CALIBRATION When delivered the transmitter is calibrated according to standard: offset ( zero point ) at ph 7.00, and slope 100% at 20 C. The transmitter should be calibrated on a regular basis according to ph, to reach a high security in the measurement. Calibration can be performed at 1, 2 or 3 ( recommended ) calibration points. The transmitter is preset for calibration at ph 7.00 ( offset ), ph 4.00 (low buffer) and ph (high buffer), other values can be chosen. If calibration at two points is desired, it is recommended that the calibration points are chosen at the "zero-point" and at a point close to the expected ph. During the calibration, the latest output signal stays "frozen". When a new electrode is installed or at the first start-up of the instrument, we advise you to do as follows: Check that the electrode glass membrane is stored wet. If the protective cap is empty and the electrode is dry, immerse the electrode in a buffer solution or tap water ( do not use destilled water ) for three hours before calibration ( and using ). If the transmitter is set for manual temperature compensation, the temperature of the buffer solution has to be set. ( see chapter ). If the transmitter is set for automatic temperature compensation, the Pt100-sensor has to be immersed in the buffer solution together with the electrode. 1. Interrupt the measuring by pressing + and at the same time. 2. The instrument automatically steps down to CAL. 1 ( calibration point 1). Pre-set zeropoint is at ph 7.00, if another offset value is desired it can be set with + and Rinse the electrode membrane carefully with destilled water. 4. Put the electrode in buffer 1. Press = to start. Wait until the value at the display has stabilised. Use + and to set the correct value. Press = to save the calibration. If the measured value differs more than ± 1.5 ph-units* from the pre-set buffer value, calibration can not be performed. When pressing = a message is shown, ( see chapter 6 ). Locate and correct the error and try again. Press M to interrupt the calibration. 5. The instrument automatically steps to CAL. 2 (calibration point 2). At calibration point 2, the instrument is calibrated at a high-buffer value ( ph > 7 ). If no calibration at point 2 is desired, the point can be ignored by pressing M until the diode at CAL.3 is activated. 6. The pre-set value on buffer 2 is ph 10.00, if another offset value is desired it can be set with + and Rinse the electrode membrane carefully with destilled water

10 8. Put the electrode in buffer 2. Press = to start. Wait until the value at the display has stabilised. Use + and to set the correct value. Press = to save the calibration. If the phslope differs more than +10%, -20%* the calibration is not accepted and the value can not be adjusted. If the ph-slope differs more than +10%, -20%* the alarm diode is activated and the calibration can not be done, when pressing = an error message is shown, (see chapter 6). Accept the error by pressing =. Locate and correct the error and try again. Press M to interrupt the calibration. 9. The instrument automatically steps to CAL. 3 (calibration point 3). At calibration point 3 the instrument is calibrated at a low-buffer value ( ph < 7 ). If no calibration at point 3 is desired, the point can be ignored by pressing M. 10. The pre-set value on buffer 3 is ph 4.00, if another offset value is desired it can be set with + and Rinse the electrode membrane carefully with destilled water. 12. Put the electrode in buffer 3. Press = to start. Wait until the value at the display has stabilised. Use + and to set the correct value. Press = to save the calibration. If the phslope differs more than +10%, -20%* the calibration is not accepted and the value can not be adjusted. If the ph-slope differs more than +10%, -20%* the alarm diode is activated and the calibration can not be done, when pressing = an error message is shown, (see chapter 6). Accept the error by pressing =. Locate and correct the error and try again. Press M to interrupt the calibration. 13. Step to MEASURE with M. 14. Rinse the electrode membrane carefully with destilled water. 15. Do not forget to reset to the process temperature when manual temperature compensation is chosen. 16. The instrument is now ready for measuring. Press M to start. The accepted range is calculated in relation to the distance from the offset value. Example: Offset ( zero ) ph 7.00 Calibration point 1 ph Calibration point 2 ph 4.00 Accepted ph-slope is +10%, -20% from ideal slope. The deviation is calculated according to: ph = 3, which gives max deviation = +10 % of 3 = 0,3 ph-units, -20 % of 3 = -0,6 ph-units. ph 4.00 = -3, which gives max deviation = +10 % of -3 = -0,3 ph-units, -20 % of -3 = 0,6 ph-units. The accepted intervals in the example: calibration point 1 = ph 9,4 - ph 10,3 calibration point 2 = ph 3,7 - ph 4,6 Accepted limits for the offset value is ph 5,5 - ph 8,5-9 -

11 ph ,5 ph ,3 0, ,5 0,6 0, OPERATION Measuring is started when the power supply is turned on. After an interruption off the measuring it can be restarted by pressing = when the MEASURE diode is activated. The display shows the actual ph-value in the solution measured at the same time as the corresponding ma-signal is sent to the output. During the operation, the diode at MEASURE is activated. 4.5 CHANGING THE PARAMETER SETTINGS All settings has to be confirmed with = to be saved. To leave the setting mode without saving the settings: press M Change the temperature compensation Manual temperature compensation 1. When manual temperature compensation is configured a 107 Ω-resistor is connected to the temperature input and a jumper is set between terminals as shown in figure below. 2. Interrupt the measuring mode by pressing + and at the same time until the measurement is interrupted and the diode at CAL.1 is activated. 3. Press M until the diode at TEMP. is activated. 4. Press + until the display shows In-- Press = to confirm. 5. Set the correct temperature with + and -. Press = to confirm. The diode at OUTPUT is activated and the display shows Step to MEASURE with M. Hold is shown on display, start measuring by pressing =. Automatic temperature compensation

12 1. Connect a Pt100-sensor to the instrument ( see chapter 2.3 for connection instructions). Make a pre-calibration according to chapter Interrupt the measuring mode by pressing + and at the same time until the measurement is interrupted and the diode at CAL.1 is activated. 3. Press M until the diode at TEMP. is activated. 4. Press + until the display shows Au--. Press = to confirm. 5. The diode at OUTPUT is activated and the display shows Step to MEASURE with M. Hold is shown on display, start measuring by pressing = Change the output range 1. Interrupt the measuring mode by pressing + and at the same time until the measurement is interrupted and the diode at CAL.1 is activated. 2. Step to OUTPUT with M. 3. Choose between 0-20 and 4-20 ma with Press = to confirm. 5. The display shows SPAn. Press = to confirm. 6. The display shows Set the ph-value corresponding to 0 (alt. 4) ma. 7. Press = to confirm. The display shows Set the ph-value corresponding to 20 ma. Press = to confirm. 9. The diode at MEASURE is activated and the display shows Hold. 10. Press = to start the measurement. NOTE! The ph-values have to be set so that the 0/4 ma-level is corresponding to a lower value than the 20 ma value. In other cases the output signal stays at 0 ma

13 5. MAINTENANCE 5.1 HARDWARE CHECK A check of the hardware is necessary only if you suspect that there is something wrong with your transmitter. 1. Disconnect the power supply. 2. Short-circuit the electrode input. 3. Connect a ma-meter to the REC-output. 4. Press M and connect the power supply, keep M pressed during 5 seconds until the four upper diodes are activated. 5. The transmitter performs a self-test according to table Hardware check CH01 Test of LED on display All 4 LED-segments are activated CH02 Test of function keys Press the keys one by one and the corresponding sign is shown on the display CH03 Test of output signal Press = is shown on the display at the same time as the corresponding signal is sent to the output. Press = is shown on the display at the same time as the corresponding signal is sent to the output. Press = CH04 test of diodes All the menu diodes are activated The version number is shown, then the instrument starts to measure. 5.2 PRE-CALIBRATION The transmitter is always pre-calibrated when delivered. Pre-calibration is only necessary when the instrument has been shut of for a longer period or when a new Pt100-sensor is connected. 1. Turn the power off. Short-circuit the electrode input. Connect a 100 Ω-resistor to the Pt100-input terminal clamps. Make a connection between the terminals according to the figure below or, when a new Pt100-sensor is connected, put the sensor in icy water ( 0 C )

14 2. Press and turn on the power supply. Keep the key pressed until the display shows CAL1. (10 seconds). Every second diode is activated. CAL1. 3. Press = to continue. 4. On the display E0.00 during 5 s. 5. On the display CAL2. 6. On the display P0.0 during 5 s. 7. On the display CAL3. 8. On the display 0.01A CAL2.. Press = to continue. CAL3. Press = to continue. 0.01A. Press + or - to receive 10.0 ma on the ma-instrument. NOTE! You have to press + or - repeatedly to get a change in the signal, 9. Press = to continue. The display shows the version number during 5 sec. 10. The instrument returns to measuring mode, the measuring starts automatically. 11. If manual temperature compensation is chosen the 100 Ω-resistor is replaced with a 107 Ω-resistor. 5.3 RESET OF DEFAULT SETTINGS The settings are reset according to chapter Turn off the power supply. 2. Press + and turn on the power supply. Keep the key pressed until the display shows C l r O (10 seconds). The four lower diodes are activated. 3. Press = to continue. 4. The display shows the version number and then the measuring starts up

15 6. TROUBLE SHOOTING CODE INDICATES PROBABLE CAUSE CORRECTION The temperature in the The temperature in the measured Correct the temperature E-01* measured solution is to low. solution is below 0 C Broken Pt100-sensor Replace the sensor E-02* The temperature in the measured solution is too high. Damage at the connections of the Pt100-sensor The temperature in the measured solution is above 100 C Check the connections Correct the temperature Broken Pt100-sensor Replace the sensor E-03 Buffer 1 measured value > ph the measured value exceeds the upper interval limit E-04 Buffer 1 measured value < ph or Or the measured value exceeds the lower interval limit Damage at the connections of the Pt100-sensor Faulty buffer solution Old/bad electrode Faulty buffer solution Old/bad electrode Check the connections Check the buffer solution Replace the electrode Check the buffer solution Replace the electrode * If the error message appears during normal operation it is probably the Pt100-sensor that is broken, the fault has to be corrected before the measuring can be continued. To continue the measurement with manual temperature compensation until a new Pt100-sensor is connected: Press = to accept the error message. Set the temperature compensation to the manual mode ( see chapter A )

16 7. SPECIFICATIONS Instrument Version Dimensions 186x131x103 Weight Ca 1,0 kg Max length, electrode cable 10 meters Display Four 7-segment LED Keyboard 4 push buttons Connections Terminals Power supply 230 VAC, 50 Hz Backup > 10 years Range, ph ph Accuracy, ph ± 0.01 ph Resolution, ph ± 0.01 ph Offset Range ± 1.5 ph, steps 0.01 ph Slope +10%, -20% Calibration 1, 2 or 3 points Temp. range C Temperature compensation manual automatic with a connected 4-wire Pt100-sensor Input ph-inp z = Ω Outputs Output 0-20 ma / 4-20 ma Max load, output 700 Ω