mDT001 HazMon System Tester Technical Manual /7
CMC INDUSTRIAL ELECTRONICS LTD
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The Industry Leader
in HazMon Technology
To test a sensor, plug the sensor into the tester. If the sensor is a temperature sensor, plug the
ground fault test cable into the tester
’s mini-phone jack and connect the alligator clip to the sensor’s
metal body. If the sensor
’s metal body is not easily reached, connect the alligator clip to any metal
part that is connected to the sensor body.
Only temperature sensors require the ground test lead.
When a sensor is connected to the modular jack and
“
Sensor Test
” is selected, the display will first
indicate:
The following messages can be displayed:
Message
Description
Sensor Good
The sensor passed all of the tests and is operational. This test
confirms the electrical interface of the sensor is working properly.
Use the “
DOWN
” key to verify the sensor is providing the correct
output.
Supply Volts Low
The sensor is drawing too high a current from the networks power
supply.
Data Volts High
The sensor is loading the data line and the data high voltage is
lower than required.
Data Volts Low
The sensor is loading the data line and the data line low voltage is
higher than allowed.
Ground Fault
One of the sensor
’s wires is in contact with the metal case of the
sensor or conducting to earth ground through moisture damage.
Red Wire Open
For temperature sensors this message indicates that the red
power wire to the sensor is open
Bad Data
The tester was unable to read a valid data packet from the sensor.
No Sensor
No sensor was detected, the sensor is defective
Sensor Test
Please Wait
