61C615
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61C615 Information: |
Reliance Automax. In stock ships today. 61C615. 61615. 61C615A. The 61C615 is an active termination panel that conditions and powers 100 Ohm platinum Resistance Temperature Detectors used with the 61C613 analog input module. Termination panel. Module. 61C615 is a 19\" rack-mountable termination panel that includes two 6-foot, 50-wire twisted pair flat cables and a 6-foot power cables. A separately mounted +15 volt power supply is provided by the user. When the panel is viewed from the front, the flat cable on the right side of the termination panel (TB2) is for analog inputs 8-15. The flat cable on the left side of the termination panel (TB1) is for analog inputs 0-7. The resistance change of the RTD with temperature is sensed by using the RTD as the external 4th arm of a bridge. The termination panel contains the internal portions of the bridge as well as the bridge excitation supply. A three-wire connection to each RTD allows the effects of lead resistance (up to 5 ohms per lead) to be compensated out. A separate shield connection is also provided. The shield is grounded at the termination panel. The supply for each bridge is modified by the output of a linearizing amplifier to compensate for both bridge and RTD nonlinearities. Three potentiometers are included for each channel to adjust offset, range, and linearity. Nominal full scale is 200 mVolts for a 200 deg. C span, or 100mVolts, depending of how the panel is calibrated.