AC Tool Supply RH350 User Manual
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RH350-en-GB_V2.5 11/14575% Calibration1. Insert the meter sensor into the 75% salt reference bottle.2. Allow the meter one hour to stabilize3. 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) will flash on the LCD. After30 minutes, the flashing will stop to indicate that the 75% calibration is complete.5. Calibration is now complete. Turn power off.Note: Frequently check the water level in the salt bottles. Both the 33% and 75% bottlesshould be completely saturated with some water present. The bottles are sealed and notrefillable.RS-232 PC Communications InterfaceThe meter is equipped with an RS-232 PC interface jack (3.5mm phono) for connection to a PC.The cable to connect the meter to the PC is included in the optional 407752 data acquisition kit. Thekit includes Windows TM compatible software that allows the user to store readings in a text file anddisplay real-time measurements in a series of selectable formats. For more information or specificoperating instructions, refer to the User Guide included with the 407752 kit or contact Extech.SpecificationsFunction Range and Resolution AccuracyHumidity 0.0 to 100.0% RH ±3% RH (10 to 90%)@ 23°CTemperature (air) -20 to 50 oC (-4.0 to 122.0 o F) ±1oC (±1.8 o F)Temperature (external K) -200 to 1370 oC (-328 to 2498 oF) ±(0.3% rdg + 1 oC (1.8 o F))Display Triple LCDSensor Type Humidity: Precision capacitance sensorInternal Temperature: ThermistorExternal Temperature: K-Type ThermocoupleResponse Time 60 seconds typicalDew Point -68 to 50 oC (-90.4 to 122.0 o F) (calculated from RH and Air temperaturemeasurements)Wet Bulb -21.6 to 50 oC (-6.88 to 122.0 oF) (calculated from RH and Airtemperature measurements)Low Battery Indicator YesOverrange Indicator E2 (air) E5 (T1), E8 (T2)Underrange Indicator E3 (air), E6 (T1), E9 (T2)Operating Conditions -20 to 50 oC (-4 to 122 oF); < 99% RH non-condensingStorage Conditions -40 to 85 oC (-40 to 185 oF); <99% RH non-condensingPower Supply 4 x 1.5V ‘AAA’ batteriesBattery Life Approx. 300 hoursDimensions / Weight 230 x 57 x 44mm (9 x 2.2 x 1.7”); 153g (5.3 oz.)actoolsupply.comactoolsupply.com |
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