Wiring An Rtd Inputs Option Card; Wiring A 0/4-20 Ma Analog Outputs Option Card - GE DigitalFlow GS868 Startup Manual

Wiring an RTD Inputs
Option Card
Wiring a 0/4-20 mA
Analog Outputs Option
Card
Installation
The Model GS868 can accommodate up to four RTD (Resistance
Temperature Device) inputs option cards. Each RTD inputs option
card provides two direct RTD inputs (designated as A and B).
The standard Model GS868 has at least one RTD inputs option card,
which is used to supply the live temperature reading required for
accurate mass flow calculations. Each RTD input requires three wires,
which should be fed through one of the conduit holes on the bottom
of the electronic console. Wire this terminal block in accordance with
the pin number assignments shown in Figure 1-10 on page 1-20.
The Model GS868 flowmeter can accommodate up to 4 analog
outputs option cards. Each analog outputs option card includes four
isolated 0/4-20 mA outputs (designated as A, B, C and D).
Connections to these outputs may be made with standard twisted-pair
wiring. The total current loop impedance for these circuits must not
exceed 1000 ohms. Wire this terminal block in accordance with the
pin number assignments shown in Figure 1-10 on page 1-20.
March 2008
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