User’s Manual Combustible Gas Leak Detector Model GD-3300
Introduction The Combustible Gas Leak Detector has a long, slim gooseneck probe to find leaks in tight areas. It’s adjustable alarm, easy one-hand operation and impact resistance storage case add up to value and convenience Applications and Features include Easily operate the Combustible Gas Leak Detector with one hand to detect presence of combustible gases. Audible and visual indicators help pinpoint leak source.
Before using this Instrument, read all safety information carefully. In this manual the word "WARNING" is used to indicate conditions or actions that may pose physical hazards to the user. The word "CAUTION" is used to indicate conditions or actions that may damage this instrument. If you are using your Combustible Gas Leak Detector as a result of a service call, chances are someone has either smelled a combustible gas leak or someone has reason to believe gas may be leaking.
WARNING! If you feel an explosion hazard exists: • Arrange for evacuation of people in the area • Call proper authorities from a safe location • Shut off gas source is possible • Ventilate enclosed areas if possible to do so without risk of ignition • DO NOT switch power switches on in area of question As a matter of routine, ventilate the area you plan to work in.
Important Information; see manual Conforms to European Union directives Controls and Indicators 1. Sensor Tip Guard & Sensor (internal) 2. Gooseneck Probe 3. Alarm Light 4. Ready Light (Power-On) 5. Power ON/OFF Slide Switch 6. Earphone Jack 7. Tic Rate (Sensitivity) Adjustment 8. Probe Clip 9. Hand handle 10. Batteries cover Instructions Switch on the gas-leak detector by sliding the ON/OFF button and the READY light is glowing.
gas. That is caused by the high Tic Rate preset in rotary wheel. Rate (Sensitivity) Adjustment Each time the instrument is put into service, you should conduct a quick functional test. Adjust the Tic Rate to non-alarm level. Then, simply expose the sensor to a known leak, like a cigarette lighter, or pass the probe over a drop of combustible fluid. After the initial warm-up, the instrument can be used to detect combustible gasses.
The tic rate tells you when the sensor (in the tip of the instrument) is getting close to a leaking gas. You can control the tic rate using the rotary wheel in the center of the instrument. Move the wheel clockwise to increase the frequency 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.
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.
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 Battery Life……………. 8 hours continuous use, typical Alarm……………………Visible & Audible at 10% LEL for Methane. Can be calibrated for other concentrations or gases. Warranty………………..
Combustible: o o o o o o o o o o o o o o o o Natural Gas Propane Butane Methane Acetone Alcohol Ammonia Steam Carbon Monoxide (not to quantify) Gasoline Jet Fuel Hydrogen Sulfide Smoke Industrial Solvents Lacquer Thinner Naphtha 9
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