Iq force™ Gas Detector Reference Manual


Calibration/Accuracy Verification



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Calibration/Accuracy Verification
WARNING
The Canadian Standards Association (CSA) requires the
instrument to undergo calibration when the displayed LEL value
during a bump test fails to fall between 100% and 120% of the
expected value for the gas.
For recommendations concerning calibration frequency, see
Appendix B
.
4.1 Calibration/Accuracy Verification
The accuracy of the IQ Force maybe verified at anytime by performing a simple calibration/accuracy check.
To perform this check, do the following. Turn the IQ Force on and wait at least three minutes to allow the readings to fully stabilize. If any of the sensors have just been replaced, the new sensors) must be allowed to stabilize prior to use. See Section 5.4
for further details on sensor stabilization requirements. Make sure the instrument is located in fresh air. Verify that the current gas readings match the concentrations present in fresh air. The oxygen (O) sensor should read 20.9%
(±0.2% vol. The readings for the LEL sensor should be 0% LEL and toxic sensors should read 0 or 0.0 parts-per-million (ppm) in fresh air. If the readings deviate from the expected levels in afresh- air environment, proceed to Section 4.2
and perform the fresh-air calibration adjustment then proceed to step 4.


Iq force™ gas detector
Contacting honeywell analytics
Technical services
Appendix a toxic gas measurement – warning, danger, stel,
Appendix d toxic sensor cross-sensitivity .............................. 52
Operating temperature
Multi-sensor capability
Table 2. alarm logic
Iq force portable gas detectors have been designed for the
In the event of an lel over-range alarm, the iq force must be
A sensor that cannot be calibrated or is found to be out of toler-
Do not use the pump for prolonged periods in an atmosphere
Case: the instrument is enclosed in a solid pc (polycarbonate) case with tpe (rubber) overmold.2. front face:
On/off mode button:
Battery charger connector:
Turning the iq force on
Notethe bump test interval and bump test due reminder are
Notesample probe assembly and tubing must be attached when
Always verify that all sensors present in the instrument are
Turning the iq force off
The iq force is designed to detect potentially life threatening
The iq force must be located in a nonhazardous location during
A combustible sensor over-range alarm indicates a potentially
Pc connection via infrared port
Error messages
Manual sample-draw kit
Motorized sample-draw pump
The canadian standards association (csa) requires the lel
Figure 1. bump test/span calibration setup
Fresh air/zero calibration
Possible causes and solutions
Fresh air/zero calibrations may only be performed in an
Span calibration
Noteonce the calibration cycle is completed, the iq force will
Possible causes of span calibration failure and remedies:
A sensor that cannot be calibrated or is found to be out of
Noteto enable the h
Notehoneywell analytics recommends regular verification of
Notethe bump test interval and bump test reminder are used
Toxic gas measurement – warning, danger, stel, and twa alarms
A.2 time weighted average (twa)
Appendix b calibration frequency rec-
Verification of accuracy & related terminology
Lengthening the intervals between calibration checks or bump tests
One button automatic full calibration and calibration docks
Iq force sensor information



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