GasTech GAZ-CAL User manual
t +61 8 6108 0000 e info@gastech.com w gastech.com
Calibration Gas Generator
OPERATOR’S MANUAL
Contents
Introduction 1
Specification 1
Maintenance 2
Instrument Packing List/Layout 3
Operation 4
Warnings 5
Troubleshooting 5
INTRODUCTION
The GazCalTM is a gas generator that produces concentrations of Chlorine
(CL2) for testing and calibrating gas detectors. The unit is battery operated and
is designed for field applications.
The GazCalTM uses an electrochemical cell to produce the gas. A cloudy
controlled airflow, provided by an internal pump, then dilutes the gas to the
required concentration.
SPECIFICATION
Concentration range: Adjustable between 0.5 and 20ppm ±10% or 0.25ppm
whichever is greater
Calibration: 0.5 - 5ppm or 5 - 20ppm
Flow rate: 0.5 l/min or 1 l/min
Cell Life: 500ppm hours
Power Supply: Internal rechargeable battery
Battery Life: Typically 12 hours between charges
Dimensions (mm): 260 W x 110 D x 210 H
Weight: 2 Kg
Operating Temperature: 0 – 50°C
Cleaning: Use moist cloth only – do not immerse in water
Delivery tube material: PTFE and/or polyurethane recommended
INSTRUMENT PACKING LIST/LAYOUTMAINTENANCE
Replacing Internal Air Filter
4 1
1. Remove 4 off front
panel retaining screws
2. Carefully swing front
panel clear of casing
3. Lift filter from spring
clip holders
4. Replace with new filter
Pack Contents List
1. GazCalTM
2. Shoulder Strap
3. 1m of Polyurethane tubing
4. Charger
5. Operating Manual
Instrument Layout
1. On/Off Switch
2.Cell Life Indicator
3. Blockage LED
4. Gas Outlet Connector
5. PPM Adjust Knob
6. PPM Display
7. Battery Charging Socket
MAINTENANCE
1. Remove 4 o front
panel retaining screws
2. Carefully swing front
panel clear of casing
4. Replace with new filter
3. Lift filter from spring
clip holders
Replacing Internal Air Filter
INSTRUMENT PACKING LIST/LAYOUT
Pack Contents List
1. GazCalTM
2. Shoulder Strap
3. 1m of Polyurethane tubing
4. Charger
5. Operating Manual
Instrument Layout
1. On/O Switch
2. Cell Life Indicator
3. Blockage LED
4. PPM Adjust Knob
5. PPM Display
6. Battery Charging Socket
7. Gas Outlet Connector
OPERATION
Ensure adequate ventilation during operation, Chlorine (even at low concentra-
tion) can be harmful. See MSDS for further product safety information.
1. Open front cover to expose control panel.
2. Check ‘CELL LIFE REMAINING’ indicator has not reached 0. If indicator
has reached 0, do not attempt to use as the generating cell needs to be
replaced. The generating cell can be replaced by either:-
a. returning the GazCalTM to Gastech (or local representative) or,
b. fitting a new cell yourself – new cells from Gastech come with full in-
structions.
3. Push outlet pipe firmly into gas outlet connector.
4. Toggle ON/OFF switch to ‘ON’ position. If low battery symbol appears on
the display, switch instrument ‘OFF’ and connect ‘GazCalTM CHARGER’
via charge socket and charge instrument for eight hours. Alternatively the
instrument can be run from the charger.
5. Ensure ‘BLOCKAGE’ LED is not illuminated. If the ‘BLOCKAGE’ LED is illu-
minated, check outlet pipe for blockages. If the ‘BLOCKAGE’ LED remains
illuminated the internal air filter may need replacing. The life of the air filter
depends upon the atmosphere which the instrument is used in, but should
always be replaced every 3 MONTHS.
6. Rotate ‘PPM ADJUST’ knob until the desired concentration is dis-
played. Allow 3 minutes for the generating concentration to stabilise. The
instrument is now ready for use. Note the GazCalTM has been designed
to work in the upright position, but can be used with the front cover either
open or closed.
7. Before switching the GazCalTM ‘OFF’, the instrument must be purged. To
purge the instrument, simply rotate the ‘PPM ADJUST’ knob until 0.0 PPM
Cl2 is displayed, and allow instrument to run for one minute before switching
instrument ‘OFF’.
8. Remove gas outlet pipe by pressing release ring of outlet connector to-
wards the case, and pull gas outlet pipe out of outlet.
WARNINGS
• Do not inhale output gas
• Do not immerse in water
• Ensure dry, compatible materials in delivery system
• Allow sucient time for gas concentration to stabilise after switch on
• Always purge the instrument after use
• Under extreme fault conditions the unit could generate up to 100ppm
Chlorine
TROUBLESHOOTING
QThe ‘CELL LIFE REMAINING’ indicator shows 0?
AThe generating cell can be replaced by either:
a. returning the GazCalTM to Gastech (or local representative) or
b. fitting a new cell yourself – new cells from Gastech come with full in-
structions.
Q Low battery symbol appears on the display?
ACharge instrument with ‘GazCalTM CHARGER’ for eight hours
QThe ‘BLOCKAGE’ LED is illuminated?
A1. Check that the gas outlet pipe is no longer than 1m in length,
as supplied by Gastech.
2. Ensure that any adaptors on calibration cups fitted to the outlet do not
cause restrictions to the gas flow.
3. Check gas outlet pipe for blockage.
4. Replace internal air filter (as detailed on page 4).
QYour GazCalTM is dropped or immersed in liquid?
AReturn the instrument to Gastech or the local representative for checking.
HEAD OFFICE
24 Baretta Road
Wangara WA 6065
Phone: +61 8 6108 0000
SYDNEY OFFICE
21/25 Narabang Way
Belrose NSW 2085
Phone: +61 2 9451 0054
BRISBANE OFFICE
PO Box 349
Cannon Hill Qld 4170
Phone: +61 7 3160 0901
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