Omega Engineering CYTX231 Series, User Manual, Page: 24 / 38

Omega Model CYTX231 User’s Manual
4-2 Service
4.1.4 Output Is Incorrect Value (Large Error)
Can be caused by incorrect sensor wiring. To test wiring, place voltmeter
between SENS V+ and SENS V– connection. With sensor connected, power
up the Model CYTX231. With the sensor at room temperature, the voltmeter
should read about 0.5 VDC for a diode sensor, or about 55 mV for a
platinum sensor. If voltage is higher than 5 VDC, then sensor connections
may be open. If sensor voltage polarity is negative, SENS V+ and SENS V–
leads are reversed. With the sensor at operating temperature, the voltage
readings should correspond to Curve #10 for diode sensors, or DIN 43760
for platinum sensors, as detailed in Appendix A.
4.2 MODEL CYTX231 CONNECTORS
There are three connectors on the Model CYTX231. The two front panel
connectors are the 8 pin terminal block (J3) and the power connector (J2).
See Figure 4-1. The rear connector (J1) is for connecting to the VMEbus.
See Figure 4-2.
Figure 4-1. Front Panel Connectors J2 and J3 Details