Troubleshooting; Maintenance - Optex THERMO-HUNTER BUILT-IN Instruction Manual

Troubleshooting

Problem
The power is not applied.
Cannot measure.
The power voltage is low.
The lens is dirty.
The measurement area is off center.
The
measurement
A high-temperature object is near the
value is wrong.
target affecting the measurement.
The emissivity rate setting is not
correct.
The sensor head is affected by
The measurement
vibration.
value is not
The sensor head is affected by rapid
stable.
temperature change.
* If the problem persists even after taking the actions above or the problem is not listed here, contact
the sales distributor.

Maintenance

Lens Dust, dirt and scratches on the lens can cause incorrect measurement. If the lens is dirty,
remove the dust using a blower for cleaning lens. For stubborn dirt, apply a small amount
of ethyl alcohol to a cotton swab or special lens cleaning cloth and gently wipe off the dirt.
Amplifi er For heavy dirt on the amplifi er, use a lightly moistened cloth to wipe it off. Do not use
alcohol or such other material because it may damage the surface or fade the printing.
Calibration Yearly calibration is recommended. The sensor head and amplifi er cannot be separately
calibrated. Always calibrate them together. For details, contact the sales distributor.
You can rinse the sensor head with water because it is water-resistant. However, water drops remaining
on the lens will cause incorrect measurement. Be sure to wipe them off with a soft cloth or blow them off
with air.
You can easily remove water or oil by using air as the water/oil-repellent coat is applied on the surface
of lens.
If the unit may be exposed to splash of water or oil or located in a dusty place during measurement, use
the optional air purge collar.
22
Cause Action
Check the cabling and connections.
Check the power voltage and adjust it to
the 12 to 24 VDC range.
Clean the lens referring to the Lens section
under "Maintenance".
Adjust the mounting position so that the
target comes to the center of the area.
Block the heat source using a board, etc.
Set the emissivity rate to that of the target.
Prevent vibration.
Leave the sensor head for a while until the
temperature becomes stable.