User guide dual input hygro-thermometer psychrometer model rh350 actoolsupply.Com actoolsupply.Com actoolsupply.Com extech rh350 superheat dual input hygro-thermometer psychrometer extech rh350-nist superheat dual input hygro-thermometer psychrometer.
Rh350-en-gb_v2.5 11/14 2 introduction thank you for selecting the extech model rh350. This device is shipped fully tested and calibrated and, with proper use, will provide years of reliable service. Please visit the extech instruments website to check for the latest version of this user guide. Meter...
Rh350-en-gb_v2.5 11/14 3 operation open the protective sensor cap twist the protective sensor cap, located at the top of the meter, counter-clockwise a quarter of a turn to expose the sensors. Turn power on or off press the [on/off] button to turn power on or off. The meter will perform a short self...
Rh350-en-gb_v2.5 11/14 4 backlight display press the [m in /av rst ] and [mem] buttons together to turn on the backlight. It will remain on for ten seconds. Automatic power off with the meter off, press and hold down the [on/off set ] + [rec hold ] buttons for more than 1 second to enter auto power ...
Rh350-en-gb_v2.5 11/14 5 75% calibration 1. Insert the meter sensor into the 75% salt reference bottle. 2. Allow the meter one hour to stabilize 3. Press and hold the [m in /av rst ] button for 2 seconds to enter the 75% calibration. 4. “75.3%” (reading may vary depending on operating temperature) w...
Rh350-en-gb_v2.5 11/14 6 maintenance cleaning and storage 1. The meter should be cleaned with a damp cloth and mild detergent when necessary. Do not use solvents or abrasives. 2. Store the meter in an area with moderate temperature and humidity (refer to the operating and storage range in the specif...
