User's Guide Precision Hygro-Thermometer
Contents
1. abs appears in the LCD 2 Absolute Humidity is now displayed Dew Point measurements 1 To select the Dew Point measurement press the C F button until DP F or C appears in the lower right 2 Dew Point temperature is now displayed GOR poe ee a ee q RH a F KO RE ie ae eel EE E EN AAE om I I i I I I abe _ Fi l i i iG PER EEPE E ard eee ETE eee pee eg a fe Th XRH e F oP RO AE EEE EAEN CAAT J Wet Bulb measurements 1 To select the Wet Bulb measurement press the C F button until WB F or C appears in the lower right 2 Wet Bulb temperature is now displayed Temperature measurements 1 To select the temperature measurement press the C F button until C or F appears in the lower right 2 Temperature is now displayed Data Hold Press the HOLD button momentarily to freeze the displayed readings HOLD will appear on the lower right hand side of the display Press the HOLD button again to return to normal operation H a WB 6 i RH i al KO EEE 5 AEE E Le AEE a SRH i n 7 G owm Pal rae Neagle aa aap ga fat J Minimum MIN Maximum MAX Function The MIN MAX mode allows the user to view only p 5 the lowest MIN or highest MAX readings Press the MIN MAX button once and MIN appears on the display The LCD is now displaying the minimum readi2. User s Guide Precision Hygro Thermometer iT Introduction Congratulations on your purchase of the Precision Hygro Thermometer This device measures Humidity Air Temperature Dew Point temperature and Wet Bulb temperature Advanced features include Data Hold Auto Power Off and MAX MIN reading Careful use of this meter will provide years of reliable service Specifications Function Range and Resolution Accuracy 2 RH 40 to 60 Humidity 0 0 to 100 0 RH 3 RH 20 to 40 and 60 to 80 4 RH 0 to 20 and 80 to 100 o Temperature 4 0 to 140 0 F 1 8 F t 1 C 20 0 to 60 0 C 22 0 to 3 9 F and 140 1 to 212 0 F 30 0to 199 C 7 and 60 1 to 100 0 C 2 7 F 1 5 C Display Response Time Sensor Type Absolute Humidity Wet Bulb Dew Point Dual LCD lt 15 seconds 90 of final value in moving air Humidity Precision capacitance sensor Temperature Thermistor 0 to 500g m 0 to 218 5gr ft calculated from RH and Air temperature measurements 32 to 176 F 0 to 80 C calculated from RH and Air temperature measurements 22 to 212 F 30 to 100 C calculated from RH and Air temperature measurements Operating Conditions 32 to 122 F 0 to 50 C lt 80 RH non condensing Storage Conditions Power Supply Battery Life 40 to 185 F 40 to 85 C lt 99 RH non condensi
3. ng 9 Volt battery Approx 48 hours Dimensions Weight 300x 75 x 50 mm 400g Meter Description Humidity amp Temperature Sensor LCD Display Backlight button C F Wet Bulb Dew Point button MIN MAX button Power ON OFF button Relative Humidity Absolute Humidity button HOLD button oN OA PF ODN Note The battery compartment is located on the rear of the instrument Display Description CO OO SB ONO re Relative Humidity Absolute Humidity Grams Per Cubic Meters Absolute Humidity Grains Per Cubic Feet Humidity Display C F Dew Point Wet Bulb Hold Minimum Maximum Low Battery Auto Off Temp WB DP Display Absolute Humidity T RH gim gr ft F 14 ms DP 7 f WB g MAX MIN si i 13 12 11 10 9 Operation Power Press the power button to turn power on or off Taking measurements 1 Hold the probe in the area to be tested 2 Allow adequate time for readings to stabilize 3 Pressing the MODE button toggles the top display between RH g m and grit 4 Pressing the C F button toggles the lower display between Temperature F Temperature C Dew Point C Dew Point F Wet Bulb C and Wet Bulb F Absolute Humidity measurements 1 To select the Absolute Humidity measurement press the MODE button until g m or gr ft and
4. ng of the selected parameter in the display The display will not change until a lower reading is registered r Press the MIN MAX button again and MAX appears on the display The LCD is now displaying the maximum reading of the selected parameter in the display The display will not change until a higher reading is registered eee ee E J Press the MIN MAX button again to exit the MIN MAX mode and the MAX or MIN icon will disappear Note While powering on the meter per time it restarts recording Minimum and Maximum and the recordings don t stop until the meter is turnned off Backlight F Press 3 to turn on the backlight To turn the backlight off press 4 again Automatic Power OFF The meter has a default setting that automatically on 3 shuts the meter off after 10 minutes indicated by the Cj symbol on the display This battery saving feature can be disabled To disable the auto power off function simply press and hold the HOLD button while powering on The symbol will not appear when auto power off has been disabled The meter will revert to the default auto off mode when powered off 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 specifications chart earlier in this ma
5. nual Battery Replacement When the battery power falls low the battery symbol will appear on the LCD Replace the 9 Volt battery by removing the Philips head screw holding the rear battery compartment cover to access the battery compartment Ensure that the compartment cover is securely fastened when finished
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