Ingersoll-Rand HC-103, User Manual

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INSTRUCTION MANUAL
Sahara Moisture Transmitter
Reference IR-085 Rev 3
Page 6 of 16 01/10/2014
IV. Operating the Transmitter
After proper installation, the SMT is very easy to use; simply power the unit up and
you are ready to begin taking measurements. Since the SMT stores moisture
calibration data in non-volatile FLASH memory, you do not have to enter data
manually or worry about losing data during a power loss.
If a problem should arise with the sensor probe, see Error Handling below for how the
transmitter reacts to error conditions.
CAUTION!
Any attempt to open the module or remove the sensor probe will void the warranty.
A. Powering Up
After the SMT is wired as described in Section II, power may be applied to the unit.
The transmitter takes approximately 20 seconds to initialize and begin normal
operation. The unit will meet specified accuracy in 3 minutes.
B. Error Handling
In the event of an error condition, the analog output reading is forced to the
following values:

≥ 22 mA to indicate a shorted probe

≤ 3.5 mA to indicate an open probe