Battery Replacement - Extech Instruments IRT600 User Manual

If the surface temperature lies within the upper third temperature range between the air
temperature and the dew point temperature, the LED will be green, indicating that the surface
temperature and humidity are both normal and mildew is unlikely (see diagram).
If the surface temperature lies within the middle third temperature range between the air
temperature and the dew point temperature, the LED will be yellow (amber), indicating that
there is a low to moderate potential for mildew.
If the surface temperature lies within the bottom third temperature range between the air
temperature and the dew point temperature, the LED will be red, indicating that there is a high
probability of mildew present on the surface under test.
For example, if the air temperature is 25°C and the relative humidity is 50%, the dew point
temperature is 13.8°C. In this example, the light would be green when the surface temperature is
between 25 and 21.3°C; a yellow light would indicate a surface temperature between 21.2 and
17.4°C; and a red light would indicate a surface temperature between 17.3 and 13.8°C.
Battery Replacement
To replace the battery:
1. Open the battery cover (located on the handle grip)
2. Carefully remove the battery
3. Install new 9V battery
4. Close the battery cover before using the meter
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.
Battery Safety Reminders
o Never dispose of batteries in a fire. Batteries may explode or leak.
o Remove battery from meter if it is to be stored for a long time period.
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