Crowcon AGM 55 User manual

AGM 55
COMBUSTIBLE
GAS LEAK
DETECTOR
OPERATING
INSTRUCTIONS
Crowcon Detection Instruments
172 Brook Drive,
Milton Park,
Abingdon,
Oxfordshire OX14 4SD
Tel: [phone]
email: [e-mail]
web: www.antonbycrowcon.com
1. Gas intensity scale, yellow/orange/red indicating
increasing gas intensity.
2. Green power LED indicating the unit is switched on.
This LED flashes when the batteries need
replacing.
3. Red LED gas intensity indicator. Flashes in unison
with the buzzer (visual indication).
4. Gas intensity buzzer. Sounds more frequently with
increasing gas intensity (audible indication).
5. Power Switch. Press and hold for 0.5s to turn on.
Press and hold for 2s to turn off.
6. DOWN Switch. Press and hold to decrease
sensitivity.
7. UP Switch. Press and hold to increase sensitivity.
8. Gas sensor open to ambient air but protected by the
head enclosure.
9. White LED ‘search light’ for illuminating the source
of the gas leak.
SPECIFICATIONS
Power Supply
3 x AA Alkaline Batteries
Battery Life
> 1500 x 1 minute readings*
Duty Cycle
Continuous.
Auto switch off after 5 mins.
Sensor
Solid State
Sensitivity
10 ppm methane
Warm Up Time
About 30 seconds
Response Time
Immediate
Operating
Temperature
-10 to +50 °C
Weight
400 grams including
batteries
Dimensions
185 x 75 x 37 mm (Body)
425 mm (Probe length)
* Using recommended Industrial batteries

GENERAL DESCRIPTION
The AGM 55 exploits the latest in sensor and
electronics technology to offer a compact and
affordable gas leak detector. Primarily designed to
detect the high methane content of natural gas it is
also sensitive to a wide range of combustible gases.
INSTRUMENT OPERATION
1. Press and hold button for 0.5s to turn on.
It is recommended to turn on the unit in
uncontaminated air i.e. away from the area where a
leak is suspected.
2. The green LED will illuminate to indicate the
instrument is powered on. During the instrument
warm-up period of around 30s, the Red LED may
flicker and buzzer may sound. After the warm-up
period the buzzer will sound every few seconds to
indicate the instrument is operational.
3. The sensitivity of the instrument can be tuned by
pressing the UP button to increase the sensitivity or
by pressing the DOWN button to decrease the
sensitivity.
4. Approach the suspected leak area with the sensor
head. As the instrument gets closer to the leak the
buzzer will sound more frequently (and the Red
LED will flash more frequently). Use the UP and
DOWN buttons to adjust the sensitivity and zone in
on the source of the leak.
5. If the Green LED starts flashing it is time to change
the instrument batteries. Do not change the
batteries in a suspected gas leak area.
6. To preserve the battery life the instrument will turn
itself off after 5 minutes from the last UP/DOWN
button press.
BATTERY REPLACEMENT
1. Remove the protective rubber boot by slipping it
away from the bottom of the case and sliding it
along the flexible goose neck exposing the case
back.
2. Remove the battery cover from the bottom of the
case by removing the four screws.
3. Remove the three AA batteries and replace with
good quality AA Alkaline batteries taking care to
install them the right way round.
4. Replace the battery cover carefully making sure it is
alligned properly and replace the screws. Take care
not to over tighten the screws otherwise it may
damage the case.
5. For best results and longer life always use quality
alkaline batteries ID 1500 or equivalent.
OPERATION CHECK
1. To verify the operation of the AGM 55 turn the
instrument on and allow it to warm up for 30 to 40
seconds.
2. Expose the sensor to a gas source. The buzzer
should sound more frequently when exposed to the
gas source and less frequently when removed from
the gas source.
3. If the instrument does not respond to changes in
exposure to a gas source, the sensor may need to
be replaced. The instrument should be returned to
the factory for inspection.
CAUTIONS
Exposure to silicone based products, corrosive gases,
water / condensation and freezing should be avoided
at all times as this will cause damage to the sensor
and internal component corrosion.
This instrument should not be stored or operated
outside of its operating temperature range.
STANDARD ACCESSORIES
The AGM 55 is supplied complete with:
•Three AA Alkaline batteries
•Operating instructions
•Protective rubber boot
WARRANTY
This instrument is guaranteed against defects of
workmanship and materials for a period of twelve
months from date of invoice.
During the warranty period a defective instrument will
be repaired or replaced at the discretion of the
manufacturer. This warranty does not cover damage
or failure due to misuse or accident. Modification,
adjustment or any alteration shall void the warranty.
For any warranty claims to be considered the
instrument must be returned to Anton along with proof
of purchase at the senders cost.
FCC Compliance
NOTE: This equipment has been tested and found to
comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against
harmful interference when the equipment is operated in
a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the
instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference
in which case the user will be required to correct the
interference at his own expense.