Aquametrix P/R60 Differential pH/ORP Sensors User Manual - Manual (Page 8)

P/R60 & P/R65 Page 8
Figure 2 - Wiring a P/R 60 probe to a Shark TX/P transmitter
3.4. ORP 4-20 mA Probes, R65
a) ORP 4-20 mA probes have four wires; black, red, green and white. The red wire is to be connected
to the +24 Vdc terminal and the back wire to the 24 Vdc common terminal via the load in the loop.
b) For an instrument with a range of 0 to 1000 mV the green and white wires are to be shorted.
c) For an instrument with a range of –500 to 500 mV the green and white wires are to be isolated from
each other.
3.5. Submersion Mounting Series 8 Differential Probes
Refer to Dwg# N105-72
a) A submersion mounting kit, STC60L is available from Water Analytics which includes 4 ft. of 1”
pipe, 1-1/2” x 1” reducer, a strain relief fitting and wire mounting bracket. Proceed as follows, either
with the kit or with your own hardware.
b) Apply a thread sealant to the thread on the cable end of the probe and screw a 1-1/2” x 1” NPT
reducer onto the probe. Route the sensor cable through an appropriate length of 1” pipe and using
thread sealant, screw the pipe into the reducer. The cable end of the probe should not be exposed