RAEGuard 3 User Manual
7
Special condition for safe use:
1. Compliance with the manual is required for safe use of RAEGuard 3.
2. Once the instrument steps into the "safe state", must shut down and
resume detector until it is ensured to be good.
3. Once the instrument will be under "safe state", 4-20mA current loop
output will output a constant value, no further changes along with
environmental gas concentration.
4. RAEGuard 3 has been calibrated by regular gas in factory before
dispatched, but in order to ensure the sensitivity and accuracy of the
instrument as far as we can, it is recommended that shall be calibrated
by complied gas each 6-month at least, also must use the “Calibration
cap” for calibration process.
5. In wiring, due to unexpected factors in the environment, the 4-20mA
output circuit may be attenuated. Checking and if not corresponding,
please re-calibrate 4mA and 20mA after the instrument is installed.
6. High and Low Alarm default threshold value are experience, and they
can be reset depending on the field applications or the demands of
customer or local regulatory. (This function is optional, if no ordering,
no offering).
7. Be Careful of low and high alarm trigger set. If the trigger set in menu
is FALLING, the device will not send an alarm message even if a high
concentration gas leak is detected!
8. Both STEL and TWA are nearly used in portable to protect personal
safety working in hazardous environments for a long time. Default is set
to DISABLE.
9. The CF set in menu is only enabled for catalytic sensor and non-
dispersive infrared sensor for detection of flammable gas.
10. For Oxygen sensor, customer in the field only needs to do SPAN
calibration since its zero calibration has been completed at the factory.
11. For oxygen sensor, while the concentration of detector is in the range
of 20.5%vol to 21.3%vol under normal status, the concentration on LCD
will show 20.9% vol. If concentration is in the range of - 1%vol to 0%vol,
detector shows 0% vol, and the output is 4 mA.
12. For flammable gas, in normal measurement, when the measured value
of detector is in the range of - 10% LEL to 1% LEL, the concentration
will show 0% LEL and output 4 mA.
To Next Page
Loading...
Need help?
General
