Instruction Manual

7
Ÿ Move the wheel counter-clockwise to decrease the frequency
A tic rate of 4 to 8 tics per second, in fresh air, is typical. As the sensor
comes near a combustible gas source, the tic rate increases. In order to
isolate the source of a leak, you may need to move the wheel counter
clockwise, decreasing the sensitivity, as the sensor moves closer.
4.3. Replacing the Batteries
Replace your 1.5 volt /size C alkaline batteries when:
• The green READY light off.
• No light or other activity occurs upon turning the instrument on
To replace the batteries:
1. Lay the instrument face-down on a flat surface.
2. Remove the battery cover. Apply upward pressure to the tab at the
bottom of the battery cover while lifting it out.
3. Remove the batteries using a coin or screwdriver, if necessary, to pry
them out.
4. Replace all three batteries with new ones.
4.4. Replacing the Sensor
Although the sensor is designed to offer many years of reliable service, it
may become inoperable if it is submerged in liquid or otherwise physically
damaged.
To replace sensor:
1. Turn the instrument off
2. Remove the upper tip guard by pressing straight up from the alignment
notch that separates the two halves of the tip guard.
3. This is a sturdy component, but use caution bending its leads.
4. Pull the sensor straight up from its tip housing.
5. Replace the sensor, pressing it straight in.
6. Reassemble in reverse order.
5. SPECIFICATIONS
Sensitivity 50 ppm methane
Sensor Type Low power semiconductor
Warm Up Time Approx. 60 seconds
Response Time Less than 2sec. (up to 40% LEL)
Duty Cycle Continuous
Probe Length 16"
Power Supply 3 ”C” cell batteries
Alarm Visible & Audible at 10% LEL for Methane. Can be
calibrated for other concentrations or gases.
Warranty 1 year
Function
Range