Red Seal Measurement Datamate 2200, Operating & Maintenance Manual

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Datamate 2200 O&M
Page 44
8.4 Power Supply
Check for specified power at the transmitter’s terminals. If the transmitter has a nominal:
• 115 VAC, 50/60 Hz power source board, the line terminal is labeled ‘7’ and the neutral
terminal is labeled ‘4’. Place jumper on terminal on ‘4’ & ‘5’ and ‘6’ & ‘7’.
• 230 VAC, 50/60 Hz power source board, the line terminal is labeled ‘7’ and the neutral
terminal is labeled ‘4’. Place jumper on terminals on ‘5’ and ‘6’.
• 12-36 VDC power select board, the positive terminal is labeled ‘2’ and the negative
terminal is labeled ‘1’.
8.5 Wiring
For detailed wiring instructions, refer to Chapters 4, 5, and 6. Wiring problems are often
incorrectly diagnosed as a faulty transducer. At initial startup of the transmitter, ALWAYS
perform the following:
1. Check the proper cable and use of shielded pairs.
2. Check the proper wire termination by performing the following:
a) Make sure the wires are on the correct terminals.
b) Make sure the wires are making good connections with the terminal strip.
c) Make sure the transducer cable connector is connected at the transducer
terminals.
8.5.1 Cable Check
The cable and connector can easily be checked using a digital multimeter (DMM).
The resistance of any conductor in this cable should be less than 1 ohm. Cables
for CSA approved transducers will have a jumper between pins E-B and G-F for
some cable configurations. In addition, the resistance between the shield (the
non-insulated conductor) and any other conductor or the connector shell must be
greater than 100 Mohms.
8.5.2 Output Board and Communications Test
To check all output and communications, use the diagnostic menu (Section 9.5) to
simulate the appropriate output test. Use a DMM to check pulse/4-20mA outputs,
and a remote communications device (e.g., computer) to test communications.