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18. REPLACING THE BATTERY OR SENSOR
The Impulse XP battery and sensor can be replaced (see Warnings).
The following items are needed:
• Replacement battery Energizer
®
(part number: 0140-0003)
• Replacement sensor filter (part number: 2566-0249)
• Crosshead (Phillips) screwdriver
• Replacement sensor: (Refer to drawing)
Use only the sensor specifically designed for the Impulse XP . Otherwise the
monitor will not detect the target gas. Full disassembly is not necessary if only
the battery needs replacement.
Carry out the following procedure in a a safe area:
1. Turn the instrument off.
2. See illustration on page 23 on how to replace the battery or sensor.
3. After replacement switch on the Impulse XP and perform a self-test,
to ensure that the display and electronics are operating correctly,
and perform a zero calibration. (If the instrument does not turn on
after battery replacement, check the polarity is correct, as indicated.)
4. After replacing the sensor, calibrate the Impulse XP .
Note: Dispose of battery according to local or national regulations.
19. WARNINGS
The use of any battery other than the one indicated will void the intrinsic safety
approval of the instrument.
Substitution of any components could void the intrinsic safety approval of the instrument.
Replace batteries only in a safe area.
22
CR2 or Sanyo CR2 only
WARNING: Remove the battery before removing this insulator. Be sure that the
insulator is secured in place prior to re-installing the battery.
-
+
Instrument type
Replacement Sensor
O
Instrument
2566-0240
2
CO Instrument
2566-0241
H
S Instrument
2566-0242
2
Instrument Label
Body Seal
Sensor Filter
O-ring
Plug-in Sensor
Main PCB (only remove if
changing sensor)
Main PCB Screw
Battery – note polarity
Positive (+) should face the side
of the instrument where the two
buttons are located.
Monitor Rear
Monitor Case Screws
23
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