Triplett Test Equipment & Tools GSM350 User manual

User Manual

GSM350

CO/CO2 Meter with Temperature and
Humidity

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Introduction

Congratulations on your purchase of the Triplett GSM350 Carbon
Monoxide/Carbon Dioxide IAQ Meter The GSM350 simultaneously
displays CO, CO2, Temperature and Humidity. The meter has a real-time
clock, datalogs and has user settable alarms for CO/CO2.

Meter Description

1. CO/CO2 Sensor

2. Temperature and

3. LCD Display

4. Left Function

5. Right Function

6. ON/OFF Button

7. Enter/Record

8. Return Button

9. Air Bleed Outlet

10. Tripod Mount

11. USB (Charging

Humidity Sensor

Button

Button

Button

and Data) Port

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Operation

Measurement Mode

Long press the ON/OFF Button to boot and shutdown.

of Time, Battery Power, CO, CO2, Temperature and Humidity in
real time, CO will begin a sensor warm up period of 30 seconds
and then will start to measure.

Click the Left Button to enter the setup page, you can set the

Language, Temperature unit switch, data sampling settings,
automatic shutdown settings, alarm settings, brightness
adjustment, time settings.

Short press of the Right Button will enter the CO, CO2

temperature and humidity and MAX/MIN/AVG mode.

Press the Enter/Rec Button to enter the history data query

interface.

MAX/MIN/AVG Mode

In this mode, the real-time data, maximum,
minimum and average values for CO, CO2,
Temperature and Humidity is displayed
Short press Right Button pauses the
reading.

Short press Left Button switches the

display page, so that CO, CO2, Temperature
and Humidity can be switched in order

Press the Return Button to return to the main page.

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Setup Menu

User Interface allows for the custom setting of Language,
Temperature Unit, Data Log sampling rates, Auto Power Off time,
Alarm settings, Brightness adjustment, and time settings.

Short press Left/Right Button can move

cursor, Left Button ,
cursor moves up; Right Button corresponds

to cursor moves down.

press the Enter Button to enter the
corresponding setting interface.

Language Setup

Use the cursor to move to the desire language setting.

Short press the Enter Button to enter

the language setting.

Short press Enter Button again to

confirm and return to the setting interface, so that the Chinese
and English interface can be switched.

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Temperature Units (°C/°F) Setup

Unit, (°C or °F) press the Enter Button
to enter the temperature unit setting.

Short press the Enter button to

confirm and return to the settings interface

Datalogger Setup

to move to the
Datalogger settings, Press the Enter
Button to enter the data sampling
setting interface, The sampling rate,
duration, and sleep mode can be set here.

duration setting is completed, the meter will automatically shut
down (when the timing reaches the sampling time)

Sampling Rate Setup

rate setting. Short press Enter Button to
enter the sampling rate time setting
page.

sampling rate is selected, - Short press the Enter

Button to confirm and return to the datalogger page.

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Sleep Mode Setup

sleep mode setting, then short
press Enter Button to enter the

sleep mode setting interface.

Short press the Enter Button to confirm and return to the
datalogger page.

Auto Power OFF (APO) Setup

Use the cursor to Auto-off, short

press Enter Button to enter

automatic shutdown setting

User can select None, 2min,

10min, 1h.
Press the Enter Button to confirm
and return to the settings interface.

the meter will Auto Power Off at the selected

time.

Choosing None will run until low battery and shut down.

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Alarm Setup

setting, short press Enter Button to enter
the alarm setting.

The CO2 alarm value setting is first, a
short press of the Left Button increases
alarm limit, and a short press of the Right
Button decreases the alarm limit

short press button to
confirm the setting and enter the CO alarm
value setting and repeat steps.

the alarm value, the display value color changes from black to red,
and when the CO or CO2 exceeds the alarm value, the buzzer
sounds to alarm.

Brightness Setup

the display

brightness, short press Enter Button to enter

brightness adjustment. There are (4) levels
to select from.

Short press Left Button to decrease the
brightness; Short press Right Button to
increase the brightness.

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Date/Time Setup

Date/Time setting , short press the Enter
Button to enter the time initialization

setting.

year, short press Left
Button plus, short press Right Button
minus.

short press Enter
Button confirmation into the month
settings, and so on set the year.

short press Left, or Right

Button can achieve switching.

enter the time division setting, short press Left Button

plus, short press Right Button minus.

Confirm and exit by Enter Button after setting up.

History (Page 1)

long press
the Enter Button to enter the
sampling history data query page.
Move the cursor through the
Left/Right Button, select the

corresponding date and time data.

Short press the Enter Button to enter the CO2, CO, Temperature

and Humidity selection interface.

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History (Page 2)

g the selection
interface, there are CO2, CO,
Temperature and Humidity options.

Enter Button to enter the histogram
display interface.

Histogram Query (Page 3)

You can query the real-time data
corresponding to the history time and the
MAX/MIN/AVG value. And visualize it in
the form of histogram.

A short press Left Button can make time
move forward, a short press of the Right
Button can make time move back, the

change of time can be seen in the
operation process.

Exporting Logged Data to .CSV File

OFF state, you can use USB lcable

to connect to the computer and to transfer the logged data.

also delete files from this mode.

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Maintenance

F

unction

R

ange R

esolution

Accuracy

products must be repaired by professionals.

s are subject to change.

Specifications

CO 0 to 1000PPM 1PPM ±5% FS
CO2 0 to 9999PPM 1PPM ±3% ±75PPM
Temper 0 to 50°C/32 to 0.1°C/0.1° ±2°C/±4°F

Humidi
ty

**Note: The humidity test is tested under about 1m/s wind
speed, the response timeof the sensor to the accuracy of the
index is about 30 minutes.
** Note: Recommended CO measuring environment 0 to 40°C (32
to 104°F), 15 to 95%; CO2 measuring environment 0 to 50°C (32 to
122°F),0 to 85%.

General Specifications

0 to 100%RH

0.1%RH

±3.5% at (20% to 80%)
±5% at (0 to 20%)
±5% at (80% to 100%)

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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 © 2022 Triplett

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