Center 384 Manual de usuario
384
Hydrogen (H2) Gas Leak Detector
CONTENT Page
1. GENERAL INFORMATION ------------------ 2
2. FEATURES
---------------------------------------- 3
3. SPECIFICATION
---------------------------------4
4. OPERATION GUIDE --------------------------- 5
5. PART & CONTROL------------------------------ 6
6. GETTING STARTED---------------------------- 8
6-1 Installing Batteries----------------------------8
6-2 Automatic Circuit/Reset Feature---------9
6-3 Feature Sensitivity Adjustment--------- 11
7. OPERATING PROCEDURE--------------- 12
8. REPLACING NEW SENSOR-------------- 14
9. CLEANING
--------------------------------------- 16
Hydrogen (H2) Gas Leak Detector
2
1. GENERAL INFORMATION
Thank you for purchasing Hydrogen (H2) Leakage
Detector. Read though the instruction manual before
operation for correct and safe usage. Please store
and retain this instruction manual for future reference.
1.1 SAFETY USE AND WORKING
ENVIRONMENT
Hydrogen (H2) Leakage Detector only is used by
persons who have necessary knowledge, skill and
know-how for Hydrogen Leakage.
It is designed to detect the leakage for a mixture
consisting of 95% nitrogen and 5% hydrogen.
Please keep the working environment in the moving
fresh air. Don’t work the detector in the confined space
or in closed room.
1.2 HYDROGEN INFORMATION
Hydrogen is the lightest element. Therefore, it
spreads and volatilizes very quickly. At standard
temperature and pressure, hydrogen is a colorless,
odorless, tasteless, non-toxic, nonmetallic.
But over 5% Hydrogen is highly combustible and
explosive. The lower explosion limit for 100%
Hydrogen is < 4% and for Forming Gas (a mixture of
hydrogen and nitrogen) is 5.6% at room temperature.
A mixture consisting of 95% nitrogen and 5%
hydrogen is not inflammable (see ISO 10156), non
Hydrogen (H2) Gas Leak Detector
3
toxic and with on environmental issues. And when it
exposes to the ambient air, it quickly rises.
2. FEATURES
This Hydrogen (H2) Leakage Detector can quickly
detect the hydrogen leakage. And its sensitivity is
less than 5 ppm.
A new Forming Gas mixture 5% Hydrogen (H2)+
95% Nitrogen(N) is used in the refrigerant or
air-conditioning systems. Therefore, a good leakage
detector can help the maintenance service to trace
the leakage and improve the cooling efficiency.
Microprocessor Control with advanced digital
signal processing.
Multi color visual display.
High-median-Low leak sensitivity selector.
Low battery indication.
Semiconductor gas sensor.
Detection of mixture 5% Hydrogen (H2) + 95%
Nitrogen(N).
Carrying case included.
15.5” (40 CM) flexible stainless probe.
Ambient concentration reset.
Long-life, DC brushless fan.
Automatic zero and background compensation.
Hydrogen (H2) Gas Leak Detector
4
3. SPECIFICATION
Detectable Gases:
mixture 5% Hydrogen (H2) + 95% Nitrogen(N).
Sensitivity:
Less than 5 ppm
H M L
95%N2,5%H2 2g/year 15g/year 30g/year
Alarm Method:
Buzzer, Tricolor LED bar Indicator.
Power Usage:
4 AA size (6V DC) Alkaline Batteries
Snake Tube length: 40cm ( 15.5” )
Dimension / Weight:
173 x 66 x 56 mm ( approximately 400g )
Accessories:
Alkaline batteries ( AA) X 4 pcs
User manual, carry case.
Battery Life:
Approximately 7 hours normal use.
Auto power OFF: 10 minutes
Disable Auto Power Off:
Press and Hold “Hi” button then power on the meter.
Warm-Up Time: Approximately 45 seconds
Operating Temperature & Humidity:
0 ~40 °C, < 80% RH
Hydrogen (H2) Gas Leak Detector
5
Storage Temperature & Humidity:
-10 ~60 °C, < 70% RH
Altitude: < 2000M (6500’)
4. OPERATION GUIDE
(1) The Hydrogen detector unit is not equipped with
anti-explosive designs and measures. Do not use
this unit in the environment with the burnable
gases.
(2) There are some environmental conditions that
might cause error reading:
Pollutant places.
Large temperature variation.
Places with high wind velocity.
Organic solvent, adhesive vapor, fuel gas and
vesicant will cause abnormal response from the
sensor. Try to avoid the environment involved with
this substance.
Places fill with too much to Hydrogen Gas.
Hydrogen (H2) Gas Leak Detector
6
5. PARTS & CONTROL
5-1 Panel Description
Hydrogen (H2) Gas Leak Detector
7
○
1Sensor ○
2Sensor Protector
○
3LED Leak Indicators ○
4Sensitivity Lo Button
○
5Sensitivity Hi Button ○
6Reset Button
○
7Low Battery Indicator
○
8Power On/Off
○
9Battery Cover ○
10 Battery Cover Screw
5-2 LED Leak Indicator Definition:
Hydrogen (H2) Gas Leak Detector
8
6. GETTING STARTED
6-1 Installing Batteries
Loose the screw and remove the battery
compartment door located on the bottom of the
instrument as show below (Fig.1).
Install 4 “AA” size alkaline batteries.
Reinstall the battery cover by aligning it with the
handle.
When the batteries are nearing the end of their useful
life, the Red LED Low Battery indicator illuminates. The
batteries should be replaced as quickly as possible.
4 “AA” size
alkaline batteries
Fig.1
Hydrogen (H2) Gas Leak Detector
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6-2 Automatic Ambient Reset Feature
This Hydrogen leak detector features an Automatic
Ambient Reset function that sets the unit to ignore
ambient concentrations of hydrogen.
Automatic Ambient Setup - Upon initial power on,
the unit automatically sets itself to ignore the level
of Hydrogen present at the tip. Only a level, or
concentration, greater than this will cause an alarm.
CAUTION!
Be aware that this feature will cause the unit to
ignore any hydrogen present at turn on. In other
words, with the unit off if you place the tip up to a
known leak and switch the unit on, no leak will be
indicated!
Ambient Reset Feature - Resetting the unit during
operation performs a similar function, it programs
the circuit to ignore the level of hydrogen
concentration present at the tip. This allows the
user to 'home-in' on the source of the leak (higher
concentration). Similarly, the unit can be moved to
fresh air and reset for maximum sensitivity.
Resetting the unit with no Hydrogen present (fresh
air) causes any level above zero to be detected.
After the unit is warmed up, the default sensitivity
level is set at “Medium” and Auto Reset function is
“ON”
Auto Reset function is best used initially when user
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