Triplett GSM200 User Manual

User Manual

GSM200

Desktop Indoor Air Quality Monitor (CO2,
Temperature and Humidity)

Introduction

Thank you for selecting the Triplett GSM200. The Carbon Dioxide
(CO2) Monitor is designed for air quality control and health control by
measuring Carbon Dioxide level in areas where CO2 could be a
concern. The measured CO2 value in ppm (parts‐per‐million),

Temperature, Humidity and Time will be displayed on the LCD along
with three CO2 status indications: Good (0 to 800ppm), Normal (800
to1200ppm), Poor (>1200ppm). An acoustic alarm sounds when the
CO2 level exceeds a defined level. This meter is shipped fully tested
and calibrated and, with proper use, will provide years of reliable
service.



Operation

1. Power button (rear)

Turns the unit on or
off.

2. HOLD button (rear)

Freezes the current
reading in the display.

3. °C/°F button (rear)

Selects °C or °F

1. Clock button (rear)

Press and hold this
button for 2 seconds
to enter
into clock mode. Press the “▲” or “▼” button
to adjust the flashing digits. Press the clock
button again to step through the settings

(day:month:year;hour:minute). Press the “ESC” button to exit the clock

setting mode.

5. Alarm button

Press the Alarm button once to activate the Alarm mode. The
icon appears on LCD display. If the measured value exceeds the
defined value, the alarm will sound and the display will flash. Press
the button again to exit the Alarm mode.

Alarm Value Setting

Press and hold the ALARM button for 2 seconds to enter into
setting mode. The icon will flash.

Press the ▲or ▼ button to
increase or decrease the value.
Press the ESC button to exit
the setting mode.

“GOOD‐NORMAL” and “NORMAL‐POOR” Value Setting

In the Alarm Value Setting mode, press the ALARM button to set the
GOOD NORMAL t display. Adjust the value as needed.
Press the ESC button to exit the mode.

6. ▲button

Press this button to increase a value. Press the “ESC” button to exit the
function.

7. ▼button

Press this button to decrease a value. Press the ESC button to exit the
function.

8. MAX MIN button

Press the button once, the ”MAX” icon appears and the Maximum

measured value of CO2, temperature and humidity will be
displayed on the screen. The display will be updated only if a

higher value is measured. Press this button again, the ”MIN” icon

appears and the Minimum measured value of CO2 temperature
and humidity will be displayed on the screen. Press ESC button to
exit the function.

display will flash red in color and the audible beeper will sound
(unless it has been disabled with the SET/▼ button). Press SET/▼
to silence the alarm beeper (when it is sounding) or to disable the
beeper entirely. When disabled, the displayed beeper symbol is
switched off.

9. ESC button

Press this button to exit the current mode.

10. AC adaptor socket

11. Power ON LED

Backlight

Touch the button area below the LCD and the backlight will turn on. It will

turn off automatically after 20 seconds of inactivity. Press “ESC” button at

any time to exit the function.

ABC (Automatic Baseline Calibration)

ABC (Automatic Baseline Calibration) establishes a baseline calibration to
eliminate the zero drift of the infrared sensor. The ABC function is always

“ON” when the meter is turned on. ABC is designed to calibrate the meter

at the minimum CO2 reading detected during 7 days of continuous
monitoring (power on). It assumes that the area being tested receives
fresh air with a CO2 level of approximately 400ppm at some period of
time during the seven days. It is not suitable to use a desktop CO2 meter
in closed areas with consistently high CO2 levels, 24 hours a day.

Maintenance

1. The meter should be cleaned with a damp cloth and mild detergent when

necessary. Do not use solvents or abrasives.

2. Store the meter in an area with moderate temperature and humidity.

Specifications

Function

Range

Resolution

Accuracy

CO2

0 to 9999ppm

1ppm

±75 ppm or ±5% of
reading

Temperature

23 to 122°F

0.1°

±1.5°C/2.7°F

(‐5°C to 50°C)

Humidity

0.1 to 90.0%

0.1%

±5%

Display

LCD with backlighting

Sampling Interval:

2 seconds

Overload
Indication:

“‐OL‐”

Sensor Type

CO2: NDIR (non‐dispersive infrared) technology

Operating
Conditions

‐5°C to 50 °C (23 oF to 122 oF) at < 90 % RH

Storage
Conditions

‐5°C to 50 °C (23 oF to 122 oF) at < 90 % RH

Power Supply

110V～220V AC, output 6.0V DC ≥ 500mA (supplied)

Dimensions /
Weight

117x102x102mm (4.6x4x4”); 204g (7.2 oz.)

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

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