Ecom CP 400 Operating Instructions Manual
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Contents
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479. Press the “NEW TEST” option to clear the data and perform another test.0. Press the “DONE” option to end the test and return to the standard pressure setting.Example:[P] ST will return to [P].Important NOTE: The previous example uses a normally closed switch.The basic procedure is still the same for a normally open switch, the display will just read “OPEN”instead of “CLOSE”.8. Calibrating Transmitters8.1 Using the mA Input FunctionThe mA input function allows the user to read back the 4-20 mA output from the devicebeing calibrated. This can be done in one of two ways.) Passively - Where the device under test directly generates 4-20 mA and can be read bythe calibrator.2) Actively – Where the calibrator supplies 24 VDC loop power to the device under test topower the device while reading the resulting 4-20 mA signal.) 2)8.2 Calibrating a Pressure-to-Current TransmitterTo calibrate a pressure-to-current transmitter (P/I), perform the following steps:. Connect the calibrator and the pump to the transmitter.2. Apply pressure with the pump.3. Measure the current output of the transmitter.4. Ensure the reading is correct. If not, adjust the transmitter as necessary. |
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