Hướng dẫn cách sử dụng máy đo môi trường

Hướng dẫn cách sử dụng máy đo môi trường Tenmars 

 Measure the formaldehyde density, temperature, humidity in the environment simultaneously ➢ Monitor the occupational safety in TWA (8 hours) and STEL (15 min) ➢ Use the high-precision electrochemical sensor for formaldehyde measurement

 

1. Press button for more than 2 seconds to turn
power on.
2. After the warm-up time about 5 minute, the
measurement screen will display.
TM-802
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5.1 Switch Unit

Press to select the formaldehyde unit of PPM
or mg/m3;
Press for 2 seconds to select ℃ or °F.

5.2 Auto power off

When any operation stopped for about 15 minutes, it
will shut down automatically.
Turn off the auto power off function: at shutdown mode,
press button and then press button to
boot, LCD will display n-SL, indicating that the
automatic shutdown function has been turned off.
Restart to restore the automatic shutdown function.
TM-802
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5.3 LED back light

Press button to turn back light on or off.
When turned on, the back light will be turned off
automatically after 15 seconds.
5.4 Record values of the maximum, the
minimum and the average
Press button to start the function, press
button once again to select the modes of
maximum (MAX), minimum (MIN) or average (AVG)
displayed on the LCD sequentially.
Press button for 2 seconds to turn this function
off.

5.5 Switch the SETL or TWA Expression of

Formaldehyde
Press button to select the modes of SETL, TWA
or normal.
TM-802
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TWA: the average total value in 8 hours (Summarize
and average the values every 3 minutes, and
update every 3 minutes)
STEL: the total average value in 15 minutes
(Summarize and average the values every 15
minutes, and update every 15 minutes)

5.6 Read value holding function

Press button to start or stop the data holding
function.

5.7 Alarm setting

Press button for 2 seconds to enter the alarm
mode.
TM-802

5.8

Press button to select the alarm turn on (A-on)
or turn off (A-oF).
After selected, press button to return to the TM-802 then display the record data.

5.9

Press button to select the number of records; if to exit the reading mode, press button to exit, or wait without pressing any button for 15 seconds to exit automatically.

5.10 Clear record

In the manual reading state, press button for 2
seconds to clear the records.

5.11 Calibration

※ As calibrating, please keep away from the organic
gases such as alcohol to avoid to interfere the
concentration of formaldehyde.
At shutdown status, press and button
simultaneously, then press button to enter the
calibration mode.
 As entering the calibration mode, you may decide
whether to reset as the factory defaults by pressing
or button.
TM-802

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 Then, press button, verify and access the
calibration screen of each point; or press to
exit.
 Press button, you may select the items
sequentially: formaldehyde 0PPM calibration,
formaldehyde 0.5PPM calibration, 33% RH
calibration, 75% RH calibration, temperature
calibration; or press button to exit.
 Formaldehyde 0PPM calibration:
Press button to select the 0PPM calibration
screen.
TM-802

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Place the meter in a clean environment,
Press button to start the formaldehyde 0PPM
calibration, and finish the calibration after 8 minutes.
Or press button to exit 0PPM calibration state
without calibration.
 Formaldehyde 0.5PPM calibration:
Press button to select the 0.5PPM calibration
screen.
Press button, and input formaldehyde of 0.5PPM
with flow rate 0.8 l/min to the meter.
The detection will stop after 8 minutes.
TM-802

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Press button or to adjust the value of
main window to 0.5ppm.
After adjusted, wait for 30 seconds and complete the
calibration.
 Humidity 33%RH calibration
Press button to select the 33%RH calibration
screen.
Place the meter in the environment of 33%RH.
After the humidity stable, press button, wait for 8
seconds and complete the calibration.
 Humidity 75%RH calibration
Press button to select the 75%RH calibration
screen.
Place the meter in the environment of 75%RH.
After the humidity stable, press button, wait for 8
seconds and complete the calibration.
TM-802

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 Temperature calibration
Press button to select the temperature
calibration screen.
Place the meter and the standard part in the same
environment for 30 minutes.
After the temperature stable, press button.
Press button or button to adjust the
value of main window to be same as the standard part.
After adjusted, wait for 30 seconds without pressing any
button to complete the calibration.