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User Manual
GSM130
Carbon Monoxide Meter
Introduction
Thank you for selecting the Triplett GSM130 Carbon Monoxide Meter.
The GSM130 is a digital, pen style meter, that measures and displays
carbon monoxide (CO) concentrations between 0 and 999 parts per
million (ppm). The GSM130 can be used for ambient air safety checks of
residential areas, appliances, HVAC service on furnaces and hot water
heaters, home inspections, and industrial environments where the
accumulation of CO is possible.
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Features
Adjustable carbon monoxide warning level Dual Display
Long life electrochemical sensor Audible alarm
Backlit LCD for easy viewing in dimly lit areas Low battery indicator
Auto power off
Included wrist strap and carry pouch
Safety Information
IMPORTANT SAFETY NOTES
The GSM130 Carbon Monoxide Monitor is intended for general
purpose Air Quality monitoring only, and has not been certified for use
pursuant to any state or city safety Carbon Monoxide Alarm or
Monitoring requirements.
The GSM130 Carbon Monoxide Monitor has not been tested by an
independent lab to comply with UL 2034
or IAS 6-96 standard.
It is the responsibility of the customer to obtain and apply current local,
state, and national regulations with regard to CO alarms, monitoring
and testing.
Electromagnetic (EMI) interference my cause erratic meter readings;
do not place meter near areas of high
EMI when taking CO measurements.
Recovery time is required after the meter has been exposed to high
levels of CO (the longer the exposure, the longer the recovery time).
Carbon monoxide is life threatening even at relatively low
concentrations; learn and recognize the effects of CO
poisoning (see Table below). Do not use this meter as a
personal safety monitoring device.
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Effects of Carbon Monoxide (CO) Poisoning
0-1 PPM
Normal background levels
9 PPM
Maximum allowable short term
exposure
50 PPM
Maximum allowable continuous
exposure level in any 8-hour period,
according to OSHA
200 PPM
Mild headache, fatigue, nausea and
dizziness after 2-3 hours
400 PPM
Frontal headache with 1-2 hours, life
threatening after 3 hours
800 PPM
Dizziness, nausea, convulsions within
45 minutes. Unconsciousness within 2
hours. DEATH WITHIN 2 TO 3 HOURS
1600 PPM
Headache, dizziness, nausea within 20
minutes, DEATH WITHIN 1 HOUR
3200 PPM
Headache, dizziness, nausea within 5-
10 minutes. DEATH WITHIN 25-30
MINUTES
6400 PPM
Headache, dizziness, nausea within 1-
2 minutes. DEATH WITHIN 10-15
MINUTES
12800 PPM
DEATH WITHIN 1 TO 3 MINUTES
Warning: Ensure that the meter is powered on in room temperature
and in an area free of CO. If not, the meter will read incorrectly when
subsequently measuring CO.
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Description
METER DESCRIPTION
1. CO Sensor
2. LCD Display
3. Backligh/Units Button
4. Power/Alarm Limit Button
LCD Display
Button Descriptions
1. Primary Display
2. MAX reading mode
3. Secondary Display
4. Unit of measure
Turn the meter on and off (short press); Select alarm setpoint value
(long press from a powered OFF state; release the button when desired
alarm limit is displayed)
Turn the backlight on and off (short press); Toggle temperature
units (long press during self-test period). Reset Maximum CO value
(long press in normal operating mode)
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Operation
Power the meter
IMPORTANT: Power the meter in a room temperature environment
and in an area free of CO; otherwise the meter will read incorrectly
when subsequently measuring CO.
Press the button to power on the meter. The LCD will switch ON
and display the programmed CO alarm limit in the primary display and
the ambient air temperature in the secondary display (as shown in the
LCD description section above). Replace the batteries if the display
does not switch ON.
The meter performs a 15-second self-test during which the displayed
values will blink. When the self-test is finished, the meter beeps and
enters the normal operating mode.
Measurements
The CO15 detects the existence of carbon monoxide (CO) in the
environment and displays the reading in parts per million (PPM) in the
primary display.
1. To take a measurement, trace the CO15 around the area of the
suspected leak.
2. The meter indicates the presence of carbon monoxide (CO) in
PPM in the primary display. The secondary display indicates the
maximum value since powered on.
3. Long press the “backlight” button while in measurement mode
to reset the maximum value.
4. When high CO levels are detected an audible beeper sounds at 25
ppm alerting the user to the dangerous CO levels. The higher the
concentration of CO, the faster the beeper will sound.
5. To turn the meter off, press the button. The meter powers off
after 15 minutes of inactivity.
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Change Temperature Units
The temperature shows on the display during the self-test only. Power
the meter in a room temperature environment for the most accurate
readings. Long press
the button during the self-test to change the temperature
units to oC or oF.
Alarm Settings
An audible beep sounds at 25ppm alerting the user to dangerous CO
levels. Change the alarm limit value by following the steps below.
1. Turn OFF the meter by pressing the button.
2. Long press the button until the options display on the
Backlight
Auto Power OFF
screen.
3. The LCD cycles through these options: 25, 30, 35, 45, 50, 70,
100, 200 ppm.
4. Release the button at the desired alarm limit value.
5. The meter enters the self-test mode.
The meter features a backlit LCD for use in dimly lit areas.
Press the button to power ON and OFF the backlight.
The meter automatically powers OFF after 15 minutes of inactivity.
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Maintenance
Battery Replacement
1. To access the batteries, remove the rear battery compartment
cover by pushing up on the tab at the bottom of the meter. Do not
operate the meter with the battery compartment open.
2. Replace the (3) 1.5V AAA batteries observing correct polarity.
3. Re-assemble the meter before use.
Safety: Please dispose of batteries responsibly; never dispose of batteries in a fire,
batteries may explode or leak. If the meter is not to be used for 60 days or more,
remove the battery and store separately.
Never dispose of used batteries or rechargeable batteries in household
waste.
As consumers, users are legally required to take used batteries to
appropriate collection sites, the retail store where the batteries were
purchased, or wherever batteries are sold.
Disposal: Do not dispose of this instrument in household waste. The user
is obligated to take end-of-life devices to a designated collection point for
the disposal of electrical and electronic equipment.
6. The low alarm icon will display and the LCD will show the low
alarm threshold.
7. Use the ▲ and ▼ buttons to adjust the low alarm threshold.
8. Press the button to go to the high alarm setup screen.
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Specifications
Error
Problem
Solution
Ensure batteries are
Display
No display when pressing
properly installed with
power button
correct polarity
Replace batteries
Check for low battery
Display
Display switches off
indicator; replace
batteries
Check for low battery
Display
Calibration Failure
indicator; replace
batteries
E2
Measurement is below
Check readings in a
the range of the meter
different area
E3
Measurement is above
Check readings in a
the range of the meter
different area
Measurement range 0-999 ppm
Resolution 1 ppm
Accuracy 0 ~ 100 ppm: ± 20%
Sensor Type Electrochemical
Power supply (3) 1.5V ‘AAA’ batteries
100 ~ 500 ppm: ± 15%
Accuracy stated for ambient
conditions: 20oC ±5oC (68oF ±9oF)
and 50% RH ±20%RH
Battery life Approx. 250 hours (backlight
off); 35 hours (backlight on)
Dimensions / Weight: 175 x 47 x 28mm (6.9 x 1.8 x
1.1”) / 158.8g (5.6 oz.)
Troubleshooting
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Warranty
Triplett / Jewell Instruments extends the following warranty to the original purchaser of
these goods for use. Triplett warrants to the original purchaser for use that the products
sold by it will be free from defects in workmanship and material for a period of (1) one
year from the date of purchase. This warranty does not apply to any of our products
which have been repaired or altered by unauthorized persons in any way or purchased
from unauthorized distributors so as, in our sole judgment, to injure their stability or
reliability, or which have been subject to misuse, abuse, misapplication, negligence,
accident or which have had the serial numbers altered, defaced, or removed.
Accessories, including batteries are not covered by this warranty
Copyright © 2021 Triplett
www.triplett.com
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