Operation - TechGrow HS-2 Bedienungsanleitung

POWER SUPPLY
The HS-2 is powered with 4 x AA batteries.
Install the batteries into the battery compartment
on the back side and make sure that the
batteries make the correct contact. When the
battery voltage is low, "LOB" will appear on the
LCD display and the HS-2 will beep to indicate
that CO2 measurements have failed. Therefore,
measurements will not be displayed. Press any
key (except "SET") to stop the beeping. Replace
batteries.
LCD DISPLAY
Symbols:
- HOLD Shows the last CO2 value,
temperature and humidity
- MIN/MAX Minimum/Maximum
measurements
- LOB Low battery indicator
- AIR Temperature °E (C/F)
Celsius/Fahrenheit
Keypad:
- SET: On/Off button, enters setup menu.
- CAL/Esc: Exit set up menu.
- CAL/Esc and MODE: Enters CO2
calibration by pushing these buttons
simultaneously.
- HOLD: Shows current measurement,
switches HOLD function on/off .
- MODE: Activates backlight, selects unit or
increases or decreases value in setup.
- DP/WBT: Selects Air-, DP-, WBT
temperature display.
- Mnx/AV: Activates MIN/MAX function.
Saves and resets MIN/MAX settings.
Also shows MIN/MAX values
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OPERATION:

Power ON/OFF
Press "SET" to activate or deactivate the HS-
2. When the meter is activated you will hear a
short beep. Then, the meter runs a 30 second
countdown to warm up. After warm up, the
normal mode with the current CO2 value,
temperature and humidity will appear on the
display.
MEASURING CO2:
The HS-2 will start measuring when power is
ON and takes a measurement every second.
NOTE: Keep suffi cient distance between faces
and the CO2 meter because exhaled breath
aff ects the CO2 value. The HS-2 measurements
are accurately between 0-2500ppm. From
2500ppm and up, the measurements of the
CO2 sensor will be less accurate.
DATA HOLD:
Press "HOLD" to read the measurements. The
"HOLD" icon will appear on the left top on the
LCD display. All displayed measurements will
maintain unchanged. Press "HOLD" again to
deactivate this function.
BACKLIGHT
Press "MODE" for longer than 2 seconds to
activate/deactivate the backlight function.
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