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Summary of Contents for General NGD8800
- Page 1 NGD8800 USER’S MANUAL COMBUSTIBLE GAS DETECTOR Please read this manual carefully and thoroughly before using this product.
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Page 2: Table Of Contents
CONTENT Page 1. GENERAL INFORMATION ------------------ 2 2. FEATURES ----------------------------------------- 2 3. SPECIFICATIONS ------------------------------- 3 4. OPERATION GUIDE --------------------------- 4 5. PARTS & CONTROLS ---------------------- 5-6 6. GETTING STARTED -------------------------- 7 6-1 Installing Batteries ------------------------- 7 6-2 Automatic Circuit/Reset Feature ------ 8 6-3 Feature Sensitivity Adjustment -------- 9 7. -
Page 3: General Information
This unit uses a newly developed semi-conductor sensor which is extremely sensitive to variety of general use combustible gases. Microprocessor controlled with advanced digital... -
Page 4: Specifications
COMBUSTIBLE GAS DETECTOR Detect fuel in marine bilges Check manholes/sewers for safety Check for cracked heat exchangers Detect solvent residue 3. SPECIFICATIONS Detectable Gases: Propane, methane, natural gas, gasoline, fuel oil, CH4 (methane), H2 (hydrogen), Iso-butane, Ethanol, Ethylene, Tetrachloroethylene, Dimethyl sulfide, Toluene, Folmaldehyde, Dietyl-ether, Ethyl-acetate, Dochloromethane, NH3 (ammonia), R-22 Alarm Method:... -
Page 5: Operation Guide
COMBUSTIBLE GAS DETECTOR Warm-Up Time: Approximately 90 seconds Operating Temperature & Humidity: 32° to 104°F (0° to 40°C), < 80% RH Storage Temperature & Humidity: 14° to 140°F (-10° to 60°C), < 70% RH Altitude: <6500 ft. (2000m) 4. OPERATION GUIDE (1) This combustible gas detector unit is NOT designed for anti-explosive measures. -
Page 6: Parts & Controls
COMBUSTIBLE GAS DETECTOR 5. PARTS & CONTROLS 5-1 Panel Description COMBUSTIBLE GAS DETECTOR... - Page 7 COMBUSTIBLE GAS DETECTOR 1. Sensor 2. Sensor Protector 3. LED Leak Indicators 4. Sensitivity Lo Button 5. Sensitivity Hi Button 6. Low Battery Indicator 7. Power On/Off & Reset Button 8. Battery Cover 9. Battery Cover Screw 5-2 LED Leak Indicator Definition:...
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Page 8: Getting Started
COMBUSTIBLE GAS DETECTOR 6. GETTING STARTED 6-1 Installing Batteries Loosen screw remove battery compartment door located on the bottom of the instrument as shown below (Fig.1) Install 4 “AA” size alkaline batteries Reinstall the battery cover by aligning it with the handle When the battery power is running low, the Red LED Low Battery indicator illuminates. -
Page 9: Automatic Circuit/Reset Feature
COMBUSTIBLE GAS DETECTOR 6-2 Automatic Ambient Reset Feature This combustible gas detector features an Automatic Ambient Reset function that sets the unit to ignore ambient concentrations of combustible gas. Automatic Ambient Setup - Upon initial power on, the unit automatically sets itself (approx. 1.5 minutes) to ignore the level of combustible gases present at the tip. -
Page 10: Feature Sensitivity Adjustment
COMBUSTIBLE GAS DETECTOR 6-3 Feature Sensitivity Adjustment The Instrument provides two levels of sensitivity. When the unit is switched on, it is set to the high sensitivity level by default. To change the sensitivity, press the key. When the key is pressed, the visual display will momentarily show the two left LED's (green) indicating Low Sensitivity level is selected. - Page 11 COMBUSTIBLE GAS DETECTOR How to Find Leaks NOTE: A sudden whipping of the leak detector probe or "blowing" into the sensor tip will affect the air flow over the sensor and cause the instrument to alarm. (1) Power-Up & Reset function key: key turns the combustible leak detector instrument ON or OFF and is also the reset function.
- Page 12 COMBUSTIBLE GAS DETECTOR (3) Enter the Measuring Mode Place the tip of the leak-detector probe as close as possible to the site of the suspected leak. Try to position the probe within 1/4 inch (6mm) of the possible leak source. Losing sensitivity gradually.
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Page 13: Replacing New Sensor
COMBUSTIBLE GAS DETECTOR Return the sensitivity switch to HIGH before searching for additional leaks. When finished leak testing, turn OFF the instrument and store it in a clean place. Protect the leak detector from possible damage. 8. REPLACING NEW SENSOR The sensor has a limited operative period. -
Page 14: Cleaning
COMBUSTIBLE GAS DETECTOR Sensor protector Sensor Fig.2 9. CLEANING The Instrument plastic housing can be cleaned with standard household detergent or isopropyl alcohol. Care should be taken to prevent the cleaning fluid from entering the instrument. Gasoline and other solvents may damage the plastic and should be avoided. - Page 16 New York, NY 10013-3567 PHONE (212) 431-6100 FAX (212) 431-6499 TOLL FREE (800) 697-8665 e-mail: sales@generaltools.com www.generaltools.com NGD8800 User’s Manual Specifications subject to change without notice ©2010 GENERAL TOOLS & INSTRUMENTS Notice - we are not responsible for typographical errors. MAN#NGD8800 12/10...
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