40
4. “OVER ppm” is always on the display.
z
Isn’t there any damage on the sensor cable?
→
Please check if there isn’t any damage on the cable.
z
Is the sensor’s connecter connected properly?
→
Please check the connector.
z
Isn’t the detector contaminated?
→
NDIR cells are easily contaminated by water or dirt. Please keep the line
clean and replace filters periodically.
5. RI-2000W operates abnormally.
z
Isn’t there any surge noise?
→
Please reboot the instrument. Please contact your nearest agent if it occurs
frequently.
6. I cannot zero calibrate (adjust the zero point).
z
Is it just after turning on RI-2000W?
→
RI-2000W needs at least an hour to warm up.
z
Is it fresh air?
→
Please use fresh clean air that does not contain any interferent gas or, use
100vol% nitrogen.
z
Isn’t there any condensation?
→
Calibration cannot be done if there is condensation.
7. Gas calibration cannot be done.
z
Is the prepared gas appropriate?
→
Please prepare appropriate gas to calibrate.
z
The sensor may be deteriorated.
→
The sensor has to be replaced.
8. There is a time lag in detection.
z
Isn’t the dust filter blocked?
→
Please replace the dust filter.
z
Isn’t there a bend or block in the sampling pipe?
→
Repair the fault locations.
z
Is the instrument attached properly and firmly?
→
Please attach the instrument properly.
9. The fuse blows
z
Trouble in RI-2000W or power source faults is predicted.
→
Please find the trouble cause and location and take measures. Replace the
fuse to a new normal fuse (125V 5A).
