Probe wiring for ITC308 and IHC200 units

Questions & Answers
1

Hi all

I have a tiny hole through which it run my probes and the only way I’ll do it is by cutting the probe wire, running it through, and rejoining.

I want to attach a 2.5mm connector as my units don’t have removable probes. However does anyone know how many wires are in the 308 temp prob and the 200 humidity probes? I need to know this so I can get the correct 2.5mm connectors.

Olly

2

The cable connecting the sensor and unit has only 2 wires. The sensor is an NTC Resistor.
I’ve even substituted other 10K ohm NTC units and even extended the wire by 10 feet.
There is a negligible offset in the reading and you can calibrate to correct this.

3

Thanks.

Any idea of the IHC humidity wiring?

And did you use a generic temp sensor online?