Extech EA80 Instruction Manual
Contents
1. minimum recording mode the MAX icon appears on the display The maximum CO reading will be displayed and will be updated only when a higher reading occurs 2 Press TIME button to enter time display mode Displays 2 and 3 will indicate the time the maximum reading occurred 3 Press MX MN button again The MIN icon will appear with the minimum value and its stamp time 4 Press MX MN button again The 4 icon will appear with the current value and current time 5 Press MX MN button again cycle through the recorded MAX MIN and current readings 6 Press J button to exit this mode 7 Press TIME button exit the time display mode Data Hold 1 Press the H button momentarily to freeze the displayed reading The H icon will appear on the upper left hand side of the display 2 Press the H button again to return to normal operation the H hold icon will disappear Backlight 1 Press the eo button to turn the backlight on or off 2 The backlight will turn off automatically after 30 second _ 858 u 3008 800 m s dh 3 EA80 V2 1H 11 06 CO Alarm Operation Setting the Alarm Limit Values 1 9 10 11 Press ALARM button to turn on the alarm function the ALM icon and current value are displayed Press SET button to enter High Low limit value SET setting mode the SET icon is displayed2. Press the SET button 6 times until SET and CAL are displayed on the LCD Press Y or A button to adjust the display to the reference value PO D 5 Press 2 to store the value and exit the calibration mode Temperature Calibration Press button to turn the meter on Place the probe in a known temperature reference for 60 minutes Press the SET button 7 times until SET and CAL are displayed on the LCD Press Y or A button to adjust the display to the reference value OP Oe NS Press J to store the value and exit the calibration mode 8 EA80 V2 1H 11 06 Specifications Display Display Rate Low Battery Indication Power Supply Battery Life Manual Data Memory Capacity Auto Datalogging Capacity Operating Temperature Range Storage Temperature Range Operating Humidity Range Storage Humidity Range Dimensions Weight Accessories CO2 Specifications Sensing Range Sensing Resolution Accuracy Sensing Method Gas Sampling Mode Warm up time Response time Temperature Coefficient LCD triple display One time per second The EH is displayed when the battery voltage drops below the operating voltage Six 6 AAA size alkaline batteries or Regulated AC adapter Approx 8 hours by using alkaline batteries without backlight or Alarm function If datalogging over a long period of
3. whether written or oral is expressed or implied Calibration and Repair Services Extech offers repair and calibration services for the products we sell Extech also provides NIST certification for most products Call the Customer Service Department for information on calibration services available for this product Extech recommends that annual calibrations be performed to verify meter performance and accuracy ry Support line 781 890 7440 Technical support Extension 200 E mail support extech com Repair amp Returns Extension 210 E mail repair extech com Product specifications subject to change without notice For the latest version of this User s Guide Software updates and other up to the minute product information visit our website www extech com Extech Instruments Corporation 285 Bear Hill Rd Waltham MA 02451 Copyright 2006 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form 11 EA80 V2 1H 11 06
4. seconds Press a or button to set the seconds Press gt button to move the cursor the days Press a or button to set the day of the real time date Please note that this is not a calendar Days are elapsed days up to 99 total Press gt button to move the cursor to the hours Please note that this is a 24 hour clock Press a or w button to set the hours To change any setting press gt or 4 button to move the cursor to desired position Press J button to store the settings and exit this mode 6 EA80 V2 1H 11 06 Manual Dataogging Storing readings Press MEM button LCD will display M and the memory address number Total hi if j memory size is 99 readings Mas eS gt CO ppm Viewing readings Press READ button to enter READ mode The LCD TZ 58 1 will display R and the memory address number Press a or w button to scroll through stored readings Press 1 enter button to exit this mode Deleting stored data Press SET button three times the LCD will display CLr and enter the clear memory mode Press J button to clear the all manually stored readings If you wish not to clear the memory press SET button two times then press 1 button to exit the clear memory mode Auto Datalogging Setting interval time Press SET button two times the INTV mark is displaye
5. User s Guide EXTECH INSTRUMENTS Indoor Air Quality Meter Datalogger Model EA80 Introduction Congratulations on your purchase of the Extech EA80 Indoor Air Quality Meter The meter measures Carbon Dioxide CO2 ppm levels ambient Temperature and Relative Humidity RH 20 000 readings can be logged by the meter and later transferred to a PC using the RS 232 interface This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service Description Ce Om Cl BO NS aaa a aw nn nn io OC ONAAPRPWNHAO Display Gas exhaust Gas inlet port RS232 AC adapter socket 9V 300mA Power Button Data Hold Button Backlight Button MX MN Button SET Button ALARM button MEM memory button Enter J button READ button TIME button C F button DEW button WET button Temperature Humidity sensor probe AC Adaptor Phono Plug I 02 5 LCD Display SET NAX MIN A CAL 7 00887 nog Err INIV CO ppm 2 8888 g 8888 3 CO m s pom CO d h RHppm 2 EA80 V2 1H 11 06 Preparation for Use Power Supply The meter is powered by six AAA size alkaline batteries or an AC adapter Installing the Batteries Insert six AAA size batteries as indicated by the diagram located on the inside of the battery compartment When the
6. and Ath 1 hundred and thousand digits of the high limit value 6 will flash ni uy CO ppm Press a or w button to set desired value 3000 An Press gt button to move the cursor to set the tens AUU UU and ones co ppm co ppm Press a or w button to enter the desired value Press gt button to move the cursor to the hundred and thousand digits of the low limit value Press a or button to set desired value Press gt button to move the cursor to move the cursor to set the tens and ones of the low limit value Press a or w button to set desired value To change any setting press gt or 4 button to move the cursor to desired high or low limit value position Press J button to store these setting and exit this mode Turning Alarm On Off Press ALARM button to turn on the alarm function ALM is displayed When the CO value is below the low limit value the meter displays w mark and beeps When the CO value exceeds the high limit value the meter displays a and beeps To exit the ALARM function press ALARM button again Setting the Real Time Clock 1 On O1 ON 10 Press SET button to enter the real time clock SET setting mode SET is displayed and the minutes mg a m are flashing hi Hi Press a or w button to set the minutes Press gt button to move the cursor to
7. battery voltage drop below the operating voltage the indicator will be displayed indicating that the batteries need to be changed AC Adapter The AC adapter allows you to power the meter from a wall outlet When using the AC adapter the batteries if installed will be bypassed The AC adapter is not a battery charger Gas Inlet Always ensure that the meter gas inlet port and gas exhaust are not blocked Operation Note Do not hold the instrument close to your face Exhaled CO will affect the accuracy of the reading Taking Measurements The sensor for Temperature Humidity Dew Point and Wet Bulb measurements is located in the remote probe Hold the probe in the air in the area to be tested DO NOT immerse in liquid The sensor for CO2 measurements is located on the top of the meter itself Selecting temperature units of measure C F Press the C F button momentarily to toggle the temperature units CO2 Measurement Press button to turn on the meter i 2 The sensor requires a 30 second warm up before displaying the CO2 measurement Z PE 3 The meter sensor needs about 10 minutes to m5 I stabilize in still air after that the readings can be CO2 ppm considered accurate Moving the meter may decrease this stabilization time Ti3 F 58 1 ARH 4 Primary display shows the CO2 reading Secondary display shows temperature reading Third display shows RH 3 EA80 V2 1H 11 06 Humidit
8. d and enter to the setting interval time mode Press a or w button to select desired interval time from 1 second to 255 seconds Press J button to store the setting value and exit this mode Auto Datalogging mode Press and hold MEM button for two seconds 3 beeps the LCD will display B and the memory location M will flash each time a recording is made The maximum memory capacity is 20 000 recordings and that can be divided into 99 sets Press J button to exit this mode and stop recording Deleting Logged Data Press SET button four times the CLr and B mark will be displayed Press J button to clear the auto datalogged memorized data and exit this mode If you choose not to clear the memory press SET button again then press 1 button to exit the clear memory mode 7 EA80 V2 1H 11 06 Calibration CO2 Calibration Press button to turn the meter on Place the probe in a known CO2 reference for 10 minutes Press the SET button 5 times until C 01 is displayed in the second display Press gt or lt button to select digits to adjust flashing OR ON Press Y or A button to adjust the display to the reference value 6 Press 2 to store the value and exit the calibration mode Humidity Calibration Press button to turn the meter on Place the probe in a known humidity reference for 60 minutes
9. eter s battery cover Replace the batteries observing polarity Affix the battery cover and secure the rear screws RS 232 Interface Software Installation and Operation Software operational instructions are located on the software disc 10 EA80 V2 1H 11 06 Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment a six month limited warranty applies to sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department at 781 890 7440 ext 210 for authorization or visit our website www extech com for contact information A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or consequential damages Extech s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty
10. time use an AC adapter 99 sets 20 000 sets maximum 99 blocks 5 C to 50 C 41 F to 122 F 10 C to 60 C 14 F to 140 F 10 RH to 90 RH non condensing 10 RH to 90 RH non condensing 158 L x72 W x35 H mm 6 22 x2 83 x1 38 approx 255g including batteries Instruction Manual Battery AC Adaptor Software CD ROM amp RS232 Cable 0 to 6000ppm 1ppm 101 4 kPa 29 92 inHg and 25 C 77 F 3 of reading or 50ppm whichever is greater Dual wavelength detector with non dispersive infrared NDIR sensor Diffusion 10 seconds lt 10 minutes in still air Add 0 36 of reading per C 0 2 of reading per F away from calibration temperature Temperature amp Humidity Specifications Relative Humidity Temperature Range 10 95 RH 20 C 60 C 4 F 140 F Resolution 0 1 RH 0 1 C 0 1 F 3 RH 25 C 77 F 30 95 RH 3 Accuracy 5 RH at 25 C 77 F 10 30 RH ee et Sensor type Precision capacitance sensor Thermistor 45 RH 95 RHSE 1min iie taa AR 10 C 2sec ime 95 RH gt 45 RHE 3min 9 EA80 V2 1H 11 06 Maintenance Cleaning Periodically wipe the case with a dry cloth or a damp cloth with mild detergent Do not use abrasives or solvents to clean this instrument Battery Replacement When the LbAE symbol appears on the LCD the six 1 5V AAA must be replaced 1 2 3 4 Turn the meter off Remove the m
11. y Measurement 1 2 3 4 5 Press the button to power on the meter The display will show the humidity reading value RH directly on the third display Hold the probe in the air in the area to be tested Do NOT immerse in liquid Allow adequate time for readings to stabilize Read the measurements on the LCD Temperature Measurement 1 OT PON Press the button to power on the meter Press the C F button momentarily to toggle the temperature units The display will show the Temperature reading directly on the second display Allow adequate time for readings to stabilize Read the measurements on the LCD Dew Point Temperature Measurement 1 Or BQN Press the button to power on the meter Press DEW button The display will show the Dew Point Reading on the second display Allow adequate time for the readings to stabilize Read the measurements on the LCD Press DEW button again to exit dew point temperature reading Wet Bulb Temperature Measurement f DOr EON Press the button to power on the meter Press WET button The display will show the Wet Bulb Reading on the second display Allow adequate time for the readings to stabilize Read the measurements on the LCD Press WET button again to exit the display 4 EA80 V2 1H 11 06 CO Maximum and Minimum Recording Measurement Press MX MN button to enter the maximum
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