General Tools General Tools NGD8800 Manual

NGD8800

USER’S MANUAL

COMBUSTIBLE GAS

DETECTOR

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

CONTENT Page

1. GENERAL INFORMATION ------------------ 2

2. FEA

TURES

3. SPECIFICA

4. OPERA

5.

PARTS & CONTROLS

TTING STARTED

6. GE

6-1 Installing Batteries ---

6-2 A

utomatic Circuit/Reset Feature ------

6-3 Fea

7. OPERA

8.

REPLACING NEW SENSOR

9. CLEANING

----------------------------------------- 2

TIONS

TION GUIDE

ture Sensitivity Adjustment --------

TING PROCEDURES

------------------------------- 3

--------------------------- 4

---------------------- 5-6

-------------------------- 7

---------------------- 7

--------- 9-12

------------- 12

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9

COMBUSTIBLE GAS DETECTOR

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 digita

signal processin

 Multi color visual display
 High-Low leak sensitivity selector
 Low battery
 Semiconductor gas sensor
 Detection of combustible gas

Carryi







A






ng case included

15.5 in. (400mm) flexible st
Reference Leak

Ambient concentration reset

pplication:

Detect leaks in automobile exhaust and fuel sy
Detect leaks in liquid or gas fired heating sy
Safety checks at propane filling st
Search for arson residue (detects accelerant

g

indication

ainless probe

source included

ations

l

stem

stems

s)

2

COMBUSTIBLE GAS DETECTOR

Detect fuel in marine bilges



Check manholes/sewers for safety



Check for cracked heat exchange



Detect solvent residue



rs

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

3

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. 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 temperatur



High wind velocity

 Organic solvents, adhesive vapors, fuel gas and

vesicants. Try to avoid environments filled with

these subst

e variations

ances.

 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.

4