12
3. In case of ZERO CAL FAIL, exit from the calibration mode by pressing SET key. Again
re-enter into calibration mode and immediately after
“APPLY ZERO GAS” prompt,
manually set zero count in between
50 to 999, ideally 500
by adjusting ZERO POT as
shown in the image below (within 30 seconds of zero calibration time).
4. After zeroing the instrument, following prompt will be displayed, enter the gas conc.
value for which instrument is to be calibrated.
5. Entering the gas value and by pressing enter key,
“Apply Span Gas”
prompt will
appear and instrument will take samples of target gas for 120 seconds and will show
counts value and remaining sampling time continuously.
Note:
SPAN GAS VALUE should be equal to or in between 10 % to 80 % of full range
of the instrument,
otherwise “INVALID SPAN GAS” prompt will appear on screen and
instrument will again ask for SPAN GAS VALUE.
6. Instrument will be calibrated only if counts value for applied span gas is in valid range
(i.e. From 2000 to 4030 display counts, ideally 3000).
7. After Span Calibration process, SPAN CAL DONE prompt will be displayed otherwise
SPAN CAL FAIL prompt will be displayed.
8. In case of SPAN CAL FAIL, re-enter into the calibration mode, zero the instrument
(optional in case of last successful zero calibration & can be skipped by pressing SET
key). Follow the same procedure mentioned from point 4 and set counts value between
range (as mentioned in point 6 of 4.2.1) by adjusting SPAN POT as shown in the image
below (within 120 seconds of span calibration time).
Upon successful Span calibration, Last calibration date of instrument will be updated
automatically to the current date.
4.3 SAMPLING MODE:
Before entering into the sampling mode, select the sampling type (Continuous/Batch
sampling) as described in section 4.1.1. Set the sampling time if batch sampling is selected
as the mode of operation.
Span Gas
XXXX
SPAN POT(TG1)
ZERO POT (TZ1)
Summary of Contents for FumiSense Pro UNIPHOS-250
Page 22: ...22 11 CONCLUSION REMARKS...
