LINCO MEASUREMENT MODEL CP-2BD MASTER METER PROVER COUNTER INSTRUCTION MANUAL

Transcription

1 LINCO MEASUREMENT MODEL CP-2BD MASTER METER PROVER COUNTER INSTRUCTION MANUAL ENGINEERED AUTOMATED SYSTEMS DESIGNERS ENGINEERS MANUFACTURERS SALES REPRESENTATIVES 4580 W. HWY 80 P.O. BOX 4096 MIDLAND, TEXAS PHONE (432) FAX (432)

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3 Version = Dec. 2, 2004 INTRODUCTION The Linco Measurement Model CP-2BD Dual Master Meter Prover Counter is a completely portable unit designed for dual meter or master meter proving, counting or totalizing applications. The unit is completely self-contained, it requires no accessory equipment other than connection to two separate transducers, such as a photo pulsers, turbine meters, tachometers, magnetic pickup or other devices which delivers a pulse or sine wave output. The LINCO MEASUREMENT Model CP-2BD consists of two independent counters, with one receiving a signal from the Master Meter and other from the meter being tested and requires that the Master Meter provide a pulse per revolution switch to gate both counters simultaneously. The incoming meter pulses are visible on two liquid crystal displays. The unit can also be applied to simultaneously prove two meters in series with a single prover detector switch input. The Model CP-2BD accepts high-speed pulses using either a balanced input for inherent noise reduction or an unbalanced input. These pulses are processed using a high sensitivity input amplifier and displayed using high-speed integrated circuits and a long life liquid crystal display. A sensitivity adjustment (VR1) is included in the unit to remove unwanted noise. For proving, internal gating circuits are provided to automatically start and stop the counter. Counts may be accumulated if desired. The CP-2BD Prover Counter will operate from either a 120 VAC power or a 12 VDC(negative ground) power source and provide a regulated voltage(+12vdc, negative ground) for operation of a photo pulser. The use of all solid state circuitry provides inherent reliability and compactness.

4 WARRANTY Linco Measurement, Inc., warrants manufactured instruments to be free from defective material or factory workmanship and agrees to repair such instruments which, under normal use and service, disclose the defect to be the fault of our manufacturing, our obligation under this warranty is limited to repairing any instrument which proves to be defective when returned within 90 days from the date of original purchase, and providing the serial number has been make know to us promptly for our records. The manufacturer does not assume any liability for direct, indirect or consequential damages whether or not arising from any defect in or the testing, repair, replacement or use of this instrument. This warranty does not apply to any of our products which have been repaired or altered by unauthorized persons or service stations in any way so as, in our judgement, to insure their stability or reliability or have had the serial number altered, defaced, or removed. Neither does this warranty apply to any of our products, which have been connected, installed or adjusted in any way other than in accordance with the instructions furnished by us. Accessories, not of our manufacture, used with this product, are not covered by this warranty. This warranty is in lieu of all other warranties expressed or implied, and no representative or person is authorized to assume for us any other liability in connection with the sale of our products. RETURNING EQUIPMENT FOR REPAIR Before returning any equipment for service, under warranty or otherwise, the factory must first be contacted giving the nature of the trouble. Instructions will then be given for either correcting the trouble or returning the equipment. Upon authorization, this equipment should be forwarded, prepaid, directly to the Linco Measurement, Inc. repair service station in you locality. All correspondence pertaining to repairs should be direct to: Linco Measurement, Inc. Attention: Electrical Repair Service P.O. Box 4096 Midland, Texas 79704

5 SECTION I SPECIFICATIONS CP-2BD Frequency Range Hz. 10 KHz. for digital pulse input 10 Hz. 10 KHz. for sine wave input. Inputs Balanced, common-mode noise rejecting Turbine Meter #1 Sensor input Stereo Jack Turbine Meter #2 Sensor input Stereo Jack Channel #1 Square Wave Photo Pulser Input - Amphenol Connector Channel #2 Square Wave Photo Pulser Input Amphenol Connector Prover Gate Input Stereo Jack Sensitivity millivolts RMS to 3,000 Hz rolling off to 90 millivolts RMS at 10,000 Hz Accuracy Plus or minus one count per side Count Capability ,999 counts per display Readouts Liquid crystal with 0.35 inch high characters Front Panel Controls Front panel selection of Count, Hold, Flow Rate, Prove, Flow Rate, P-Test, X1 - X2, Counter Reset, Detector Switch 1 2 or both, input sensitivity, and Power On-Off. Power Requirements volts AC, Hz or volts DC(negative ground), 2 amp maximum Operating Temperature - - Minus 20 degrees F to plus 158 degrees F Housing General purpose with rubber mounting feet Size (high) x 11 ¼ (wide) x 10 (deep) Weight pounds

6 SECTION III INSTALLATION OF THE CP-2BD Installation of the LINCO MEASUREMENT Model CP-2BD Dual Master Meter Prover Counter is straightforward. It s small size, light weight and ability to operate from 12 VDC power makes portable usage exceptionally convenient. Location The CP-2BD is furnished in a General Purpose Enclosure and is designed for use in a controlled environment in a non-hazardous area. The unit should not be used in an outside environment. Proper installation practice requires that the Prover Counter, transducers and connecting cables be located in an area where strong magnetic fields do not exist. Heavy motors, transformers and similar equipment should be avoided. Electrical Connections The electrical wiring required will depend on the transducers being used, the type of operation desired and the power available. Reference should be made to the drawings at the end of this manual for typical installations and connector identifications. For convenience, it may be desirable to provide two power connectors, with one wired for 120 VAC and one for 12 VDC. As shown on the drawing for TURBINE METER SENSOR pick up coils, signal connections should be run in shielded wire with the shield connected ONLY at the Prover Counter connector. Wire size of #22 gauge or larger is recommended for distances of 1,000 feet or less. For distances up to 2,500 feet #18 gauge wire should be used. CAUTION: Use care in wiring the connectors as improper connections may damage the instrument. NEVER CONNECT ANY VOLTAGE to the inputs or to the control connectors. In a typical positive displacement meter proving, using a photo pulser, cable runs between the photo pulser and the Prover Counter should be limited to 250 feet or less and the +12 volt connections should use #18 gauge wire. Loner runs will result in voltage drop in the wire, which may adversely affect the operation of the photo pulser. CAUTION: The plus 12 VDC power available at the input connector should NEVER be shorted to ground. This may result in damage to the power supply or the circuit board and will efect the warranty of the Prover Counter.

7 SECTION III CONTROLS FOR CP-2BD NOTE: Refer to the drawings in back of this manual. All controls are located on the front panel of the LINCO MEASUREMENT Model CP-2BD Dual Master Meter Prover Counter. The following is a list of the switches provided and their function starting in the upper-left of the front panel. ======================================================================= Top-Row Switches FLOW SWITCH Position On(Up) Off(Down) Meaning Both totalizers receive input pulses from the channel-1 input connector Totalizer-1 get its input from the channel-1 input connector Totalizer-2 get its input from the channel-2 input connector ======================================================================= Left-Side Switches Meter #1 / HD(Hold) / Flow Rate Switch(Left side) This switch selects the disposition of the high frequency pulses coming from either the Chan #1 Input jack or the Turbine Meter #1 Sensor jack. There would normally be 8,400 pulses on this input per barrel of fluid. Position Meter #1 HD(Hold) Flow Rate Meaning Display #1 indicates the total number of pulses since it was cleared. Freezes Display #1 at its current count. Display #1 indicates flow rate(in barrels/hour) using a K-factor of 8400 pulses/barrel X1 / X2 SWITCH(Left side) Position Meaning X1 The input pulses are multiplied by 1. X2 The input pulses are multiplied by 2(doubled). In this position the count is incremented on every positive-going and every negative-going transition of the input effectively doubling the count.

8 PROVE / FR / P-TEST SWITCH(Left side) Position Meter #1 FR P-Test Meaning An input pulse on the ProverGate Input jack starts the display counting the pulses supplied to the Chan #1 Input jack. Another input pulse on the ProverGate Input jack stops the display counting the pulses supplied to the Chan #1 Input jack. The display does not clear. Another input pulse on the ProverGate Input jack restarts the display counting the pulses supplied to the Chan #1 Input jack. The display continues counting from its previous level and does not clear. Pressing RESET will clear the display. Do this while it is not counting. The display counts the pulses supplied to the Chan #1 Input jack without regard to the pulses on the ProverGate Input jack or the 1PPR(pulse/revolution) pulses supplied to the Chan #1 Input jack. Pressing RESET will clear the display. Do this while it is not counting. This is the Photopulser Test Position. This position operates similar to the Meter #1 position except that instead of using the signal from the ProverGate Input jack the photopulser s 1PPR(pulse/revolution) signal provides start-stop control. Assume that a photopulser is connected to the Chan #1 Input jack and 1,000 pulses/revolution are coming from the photopulser. The display would start at zero(assuming that Reset had just been pressed) it would increment from 0 to The display would pause at 1000 for one revolution of the photopulser. The display would then count from 1000 to The display would pause at 2000 for one revolution of the photopulser. etc Reset Switch(Left Side) This is a momentary switch(normally up). When pressed it clears the left display to zero. =======================================================================

9 Right-Side Switches Meter #2 / HD(Hold) / Flow Rate Switch(Right side) This switch selects the disposition of the high frequency pulses coming from either the Chan #2 Input jack or the Turbine Meter #2 Sensor jack. There would normally be 8,400 pulses on this input per barrel of fluid. Note: If the Flow Switch is On(Up), then the right side is fed from the Channel #1 input jacks. Position Meter #2 HD(Hold) Flow Rate Meaning Display #2 indicates the total number of pulses since it was cleared. Freezes Display #2 at its current count. Display #2 indicates flow rate(in barrels/hour) using a K-factor of 8400 pulses/barrel X1 / X2 SWITCH(Right side) Position Meaning X1 The input pulses are multiplied by 1. X2 The input pulses are multiplied by 2(doubled). In this position the count is incremented on every positive-going and every negative-going transition of the input effectively doubling the count

10 PROVE / FR / P-TEST SWITCH(Right side) Note: If the Flow Switch is On(Up), then the right side is fed from the Channel #1 input jacks. Position Meter #2 FR(Flow Rate) P-Test Meaning An input pulse on the ProverGate Input jack starts the display counting the pulses supplied to the Chan #2 Input jack. Another input pulse on the ProverGate Input jack stops the display counting the pulses supplied to the Chan #2 Input jack. The display does not clear. Another input pulse on the ProverGate Input jack restarts the display counting the pulses supplied to the Chan #2 Input jack. The display continues counting from its previous level and does not clear. Pressing RESET will clear the display. Do this while it is not counting. The display counts the pulses supplied to the Chan #2 Input jack without regard to the pulses on the ProverGate Input jack or the 1PPR(pulse/revolution) pulses supplied to the Chan #2 Input jack. Pressing RESET will clear the display. Do this while it is not counting. This is the Photopulser Test Position. This position operates similar to the Meter #2 position except that instead of using the signal from the ProverGate Input jack the photopulser s 1PPR(pulse/revolution) signal provides start-stop control. Assume that a photopulser is connected to the Chan #2 Input jack and 1000 pulses/revolution are coming from the photopulser. The display would start at zero(assuming that Reset had just been pressed) it would increment from 0 to The display would pause at 1000 for one revolution of the photopulser. The display would then count from 1000 to The display would pause at 2000 for one revolution of the photopulser. etc Reset Switch(Right Side) This is a momentary switch(normally up). When pressed it clears the right display to zero

11 Bottom Row Switches POWER SWITCH Position ON OFF Meaning Unit is turned ON and the POWER LED is lit. Unit is OFF and the POWER LED is not lit Detector & Select Both Switches The prover travel limit switches are normally wired into the Prover Gate Input jack to the immediate left of these switches. Detector SELECT Both Position Position Meaning Meter #1(Up) OFF(Down) Routes gate input to meter #1 only. Meter #2(Up) OFF(Down) Routes gate input to meter #2 only. Doesn t matter ON(Up) Routes gate input to both meters MANUAL START(Momentary pushbutton) Position Not Pressed Pressed Meaning No effect Toggles input gating. Press to start counting. Press again to stop counting. This pushbutton switch is in parallel with the jack for the prover gate switches. This pushbutton is used to simulate a prover cycle

12 SECTION IV OPERATION OF THE CP-2BD This is the switch configuration for proving two PD meters in series in a flow line at the same time. When the connections have been made Press and release both Reset switches to zero the displays and initialize the CP-2BD. Start the prover cycle. Both Gate LED lamps will flash for each prover gate switch closure. Each display will starting counting on the first gate switch closure and stop counting on the second gate switch closure.

13 This is the switch configuration for proving two turbine meters in series in a flow line at the same time. When the connections have been made Press and release both Reset switches to zero the displays and initialize the CP-2BD. Start the prover cycle. Both Gate LED lamps will flash for each prover gate switch closure. Each display will starting counting on the first gate switch closure and stop counting on the second gate switch closure.

14 This is the switch configuration for proving a PD meter on the left side and indicating the PD meters flow on the right side. When the connections have been made Press and release both Reset switches to zero the displays and initialize the CP-2BD. Start the prover cycle. The left Gate LED lamps will flash for each prover gate switch closure. The left display will starting counting on the first gate switch closure and stop counting on the second gate switch closure. The right display will indicate flow in barrels/hour(constantly updated).

15 This is the switch configuration for proving a turbine meter on the left side and indicating the turbine meters flow on the right side. When the connections have been made Press and release both Reset switches to zero the displays and initialize the CP-2BD. Start the prover cycle. The left Gate LED lamps will flash for each prover gate switch closure. The left display will starting counting on the first gate switch closure and stop counting on the second gate switch closure. The right display will indicate flow in barrels/hour(constantly updated). Note: This is a workable configuration but the flow reading on the right side assumes 8400 pulses/barrel.

16 In this mode the operation of the photopulser(s) may be checked. Plug in the photopulser(s) and set the switches as shown above. Press the applicable Reset switch when the counter is not incrementing. Assuming 1000 pulses per revolution, the display should count from 0 to 1000, wait while displaying 1000, count from 1000 to 2000, wait while displaying 2000, etc. The Gate LEDs will blink for a very short duration.

17 SECTION V TROUBLE SHOOTING THE CP-2BD Fuses: In the event of complete loss of instrument function when operating on AC power, the fuse (F 1) or (F2) if DC powered should be checked and if defective, replaced. If all indications show that the instrument is functioning properly but no signals from a photo pulser are being received, check the fuse (F3) and if defective, replace. CAUTION: The use of a fuse other than a 3AG 2 amp size may result in damage to the instrument and voids the warranty.

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