INSTRUCTION MANUAL - Extech Instruments
Contents
1. User s Guide EXTECH INSTRUMENTS Model 445815 Humidity Alert Il Humidity Indicator with Dew Point and Programmable Hi Lo RH Alarms Introduction Operation Hamidity Alert it wA p4 en EE 23 8 218 waren mE tam CE Calibration Congratulations on your purchase of Extech s Humidity Alert II Remote Probe Hygro Thermometer Humidity alarms warn when the RH exceeds a pre set HI or LO limit The remote probe conveniently mounts on the meter or extends for measurements in ducts or remote locations It also features Humidity and Temperature adjustments The unit can be wall mounted or placed on a flat surface using the fold out stand This professional meter with proper care will provide years of safe reliable service Meter Description Temperature Humidity Sensor RH Display Dew Point Display Temperature Display RH LED alarm Max Min push button Reset push button Sensor cable storage Tilt Stand 10 Humidity calibration adjust 11 Temperature units switch F C 12 Temperature calibration adjust 13 Wall hanger 14 Battery compartment 15 Audible Alarm ON Off switch Cautions OO NOP OF GO Boy co e This device is not a toy and must not reach children s hands It contains hazardous objects as well as small parts that the children could swallow In case a child swallows any of them please contact a physician immediately e Do not lea2. X MIN mode 2 Press and hold the RESET button for 1 second to clear the memory and start recording new max min values Setting the RH Alarm Limits 1 Simultaneously Press and HOLD the MAX MIN and RESET button until HI and the stored HI RH limit appears flashing 2 Press the RESET button to set the Hi RH limit Hold the button in for rapid adjustment 3 Press the Max Min button LO and the stored LO RH limit will appear flashing 4 Press the RESET button to set the LO RH limit 5 Press the Max Min button to turn on or off the alarm The alarm icon 4 will appear in the display when the alarm is active 6 Press and hold the RESET button to save the settings and exit the mode Alert If RH exceeds the HI limit or goes below the LO limit the alert will be activated The alert consist of two flashing ALERT icons in the upper display a flashing red light for 60 seconds and an audible buzzer for 60 seconds RH Calibration 1 Insert meter s sensor into a humidity chamber The reference should be 85 RH at 21 C 2 Check the reading after 1 hour 3 Adjust the RH calibration pot in turn increments waiting for the display to update after each adjustment until the reading is within the accuracy specification Temperature Calibration 1 Place the sensor in a stabilized environment of approximately 21 C 2 Check the reading after 1 hour 3 Adjust the temperature calibration pot in 2 turn increments waiti
3. ng for the display to update after each adjustment until the reading is within the accuracy specification Battery Replacement Open the battery compartment by sliding the battery cover on the rear of the instrument downward as indicated by the arrow Replace the 1 5V AAA batteries and replace the cover You as the end user are legally bound Battery ordinance to return all used batteries and accumulators disposal with the household garbage is prohibited You can hand over your used batteries accumulators gratuitously at the collection points for our branches in your community or wherever batteries accumulators are sold Disposal Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle Specifications pe poy O 10 to 60 C 14 to 140 F Humidity 10 to 99 Dew Point 36 to 60 C 32 8 to 140 F Temperature 1 0 C within 10 C to 50 C 1 8 F within 14 F to 122 F 4 RH within 25 to 85 RH and 0 to 50 C or 32 to 122 F 2 C 20 C 3 6 F 68 F Dimensions Display 4 3x3 9x0 8 109x99x20mm Probe 0 57 14 4mm Dia 1 67 42 4mm L Cable length 18 457mm Note If subjected to an electrostatic discharge the meter may malfunction and require the user to perform a reset
4. ve batteries and packing material lying around unattended they can be dangerous for children if they use them as toys e Incase the device is going to be unused for an extended period of time remove the batteries to prevent them from training e Expired or damaged batteries can cause cauterization on contact with the skin Always therefore use suitable hand gloves in such cases e See that the batteries are not short circuited Do not throw batteries into the fire Copyright 2005 2015 FLIR Systems Inc All rights reserved including the right of reproduction in whole or in part in any form ISO 9001 Certified www extech com V3 4 7 15 Preparation for use Open the battery compartment by pushing the cover on the rear of the instrument downward as indicated by the arrow Remove the battery insulating strip and the protective film cover on the LCD display Temperature Units Select F or C units using the rear selection switch Audible alarm Select fn or Busing the rear selection switch to turn the audible alarm on or off Maximum Minimum display 1 Press the MAX MIN button The highest value measured since the Reset button was last pressed appears on the display 2 Press the MAX MIN button again to display the lowest value measured since the Reset button was last pressed 3 Press the MAX MIN button again to return to normal display operation Resetting clearing the MAX MIN memory 1 Press the MAX MIN button to enter the MA
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