General NGD8800 User Manual
NGD8800
USER’S MANUAL
COMBUSTIBLE GAS
DETECTOR
Please read this manual carefully and thoroughly before using this product.
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. OPERATING PROCEDURES --------- 9-12
8. REPLACING NEW SENSOR ------------- 12
9. CLEANING --------------------------------------- 13
COMBUSTIBLE GAS DETECTOR
2
1. GENERAL INFORMATION
Thank you for purchasing this Combustible Gas
Detector. Read though the instruction manual before
operation for correct and safe usage. Please store and
retain this instruction manual for future reference.
2. FEATURES
This Combustible Gas Detector is extremely useful as a
general purpose tool in any environment where
propane, methane, natural gas, gasoline and fuel oil is
used. 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
signal processing
Multi color visual display
High-Low leak sensitivity selector
Low battery indication
Semiconductor gas sensor
Detection of combustible gas
Carrying case included
15.5 in. (400mm) flexible stainless probe
Reference Leak source included
Ambient concentration reset
Application:
Detect leaks in automobile exhaust and fuel system
Detect leaks in liquid or gas fired heating systems
Safety checks at propane filling stations
Search for arson residue (detects accelerants)
COMBUSTIBLE GAS DETECTOR
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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:
Buzzer, Tricolor LED bar Indicator
Sensitivity: As low as 5ppm (methane)
Power Source:
4 “AA” (6V DC) alkaline batteries
Probe Length: 15.5 in. (400mm)
Dimension / Weight:
6.8 x 2.6 x 2.2 in. (173 x 66 x 56mm) / approximately
14.1 oz. (400g)
Accessories:
4 “AA” alkaline batteries, user’s manual, leak check
bottle, carry case
Battery Life:
Approximately 40 hours normal use
Auto power OFF: 10 minutes
COMBUSTIBLE GAS DETECTOR
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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. Do not use this unit in an
area where combustible gases can be found.
(2) The following environmental conditions may cause
error in the readings:
Large temperature variations
High wind velocity
Organic solvents, adhesive vapors, fuel gas and
vesicants. Try to avoid environments filled with
these substances.
Places filled with too much combustible gas
Note: Although this unit will respond to high levels of
carbon monoxide, it should NOT be used as a detector
for this gas in normal room or working atmospheres. It
is used to pinpoint a leak as described in the operating
instruction.
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