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ADJUSTABLEFEATURES
The Above settings are field adjustable:
Setting Display Mode For %LEL & Alarm Setpoint For %LEL
1. While the unit is on and in the working display, push the A and C buttons until the
display shows OPt.
2. Press the B button once until the display shows diS%. This indicates the working
display will show measurements in %LEL.
3. Press the B button once more until the display shows AL%. This indicates the
alarm setpoint can be set in units of %LEL.
4. Press the B button once more until the display shows XX.X%. This is the alarm
setpoint (XX.X can be values of 0-9).
5. Press the C button to increment the alarm setpoint or press the B button to
decrement the alarm setpoint (Minimum 2.0%LEL, Maximum 60.0%LEL)
6. Press the A button once to exit to the OPt menu.
7. Press the A button once more to exit to the working display which will show
measurements in %LEL.
Setting Display Mode For PPM & %LEL & Alarm Setpoint For PPM
1. While the unit is on and in the working display, push the A and C buttons until the
display shows OPt.
2. Press the B button once until the display shows diS%. This indicates the working
display will show %LEL measurements.
3. Press the C button once until the display show diS% ppm. This indicates the
working display will initially show ppm measurements then transition to %LEL
measurements once the unit measures greater than 990ppm.
4. Press the B button once more until the display shows AL ppm. This indicates the
alarm setpoint can be set in units of PPM.
5. Press the B button once more until the display shows XXXppm. This is the alarm
setpoint; it must be set to a PPM value greater than or equal to 100ppm to
activate the PPM alarm.
6. Press the C button to increment the alarm setpoint or press the B button to
decrement the alarm setpoint (PPM Alarm Off: 99ppm, Minimum 100ppm,
Maximum 990ppm)
7. Press the A button once to exit to the OPt menu.
8. Press the A button once more to exit to the working display which will show
measurements in PPM.
SENSORREPLACEMENT
Step1: Turnoffinstrument.
Step2: Removesensor capand sensorretainerfilter.
Step3: Removesensor.Observe thelocationof thetab relative
to the white dot beneath, on the circuit board.
Step4: Replacesensor. Besure toalign thesensor tab directly
overthe whitedot.
Step5: Placesensor retainerfilter insidesensor capand install
sensorcap.
Step6:Turninstrumentonandwaitforzeroprocesstocomplete.
“bAd”indicatesimproperlyinstalledsensororadditionalwarm-up
time is required. Allow the instrument to operate for 10 minutes,
then press and hold the C button to reestablish zero. If “bAd”
remainsonthedisplay,removetheinstrumentfromservice.
Step 7: If zeroing of the replacement sensor was successful
and at least a 5 minute warm-up has been observed, proceed
with the calibration instructions.
WARNING: Perform service only in areas known to be non-
flammable.
WARNING:Substitutionofcomponentsmayimpairintrinsicsafety.
WARNING: Use only sensor from SENSIT Technologies.
Part Number 375-2611-01
Alarm PPM 100-990 OFF
Alarm-LEL 2-60% 10%
Show PPM 10PPM Resolution ON
MENU ITEMS RANGE DEFAULT
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