Related Manuals for Extech Instruments RH300
Summary of Contents for Extech Instruments RH300
- Page 1 USER MANUAL Digital Psychrometer Models RH300 and RH305 kit Additional User Manual Translations available at www.extech.com...
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Page 2: Meter Description
Humidity, Air Temperature from the internal sensor (T1), and Temperature from the TP890 optional external probe (T2). The RH300 calculates Dew Point and Wet Bulb temperature based on T1 air temperature measurements and relative humidity measurements. The meter also calculates T1 minus T2 temperature and T2 minus Dew Point temperature. -
Page 3: Button Descriptions
(external) temperature sensor (TP890). Dew Point and Wet Bulb temperatures are calculations based on T1 air temperature and relative humidity. T1 minus T2 and T2 minus Dew Point temperature displays are only available when you connect a TP890 optional temperature probe. RH300-en-GB_v2.0 10/18... -
Page 4: Operation
Bulb (Wb) temperature. Note: If the optional temperature sensor is not connected, , , and T2 values will not be displayed. Selecting Temperature Measurement Units Long press the UNITS button to toggle the temperature measurement units ( C and RH300-en-GB_v2.0 10/18... - Page 5 Note that the ‘n’ (APO defeat setting) only appears the first time through the APO time cycle in the programming process, so if you want to disable the APO you will have to catch the ‘n’ on the first cycle. If you miss it the first time, switch the meter OFF and retry. RH300-en-GB_v2.0 10/18...
- Page 6 10. After one hour, press and hold the MN/MX button until 75.3% begins flashing on the meter display. The meter has now entered the 75.0% calibration stage. 11. After 30 minutes, the meter will exit the calibration and return to normal operating mode. 12. The Calibration is now complete; please switch the meter OFF. RH300-en-GB_v2.0 10/18...
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Page 7: Maintenance
ER4: Internal temperature sensor measurement is out of range. Always measure within the published specified range. ER5: External temperature sensor measurement is out of range. Always measure within the specified range of the optional TP890 external temperature sensor. RH300-en-GB_v2.0 10/18... -
Page 8: Specifications
Dimensions / Weight 178.5 x 48.8 x 25.2mm (7.0 x 1.9 x 1.0”); 140g (4.9 oz.) Copyright © 2013-2018 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form www.extech.com RH300-en-GB_v2.0 10/18...
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