User's Guide
EasyView™ K-Type Thermometer
Model EA11A
Introduction
Congratulations on your purchase of the Extech EasyView™ Thermometer. This device
offers a single K-type thermocouple input with multifunction LCD display. This meter is
shipped fully tested and calibrated and, with proper use, will provide years of reliable
service.
Safety
To prevent personal injury or meter damage, use the meter only as specified in this
guide
To avoid electrical shock or personal injury, do not apply more than
20Vrms between the thermocouple inputs or between the thermocouple
WARNING
and earth ground
Meter Description
Meter
1. Thermocouple input connector
2. LCD display
3. Function buttons
4. Battery compartment (rear)
Display
1. Low battery
2. Primary display
3. Memory location
4. Auto power off
5. Secondary display
6. Max, Min and Average
7. Temperature units
8. Read from memory location
9. Store to memory location
10. Hold
11. Offset
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EA11A V1.0 02/07
Operation
Connecting thermocouples
1. This meter accepts any K-type thermocouple with spade plugs (sub-miniature type with
one spade wider than the other).
2. Plug the thermocouple into the meter's thermocouple input jack.
Measuring
1. Press the button to turn power on. The meter will perform a short self-test.
2. Press the °C/°F button to select the desired temperature unit of measure. A display
icon will reflect the selection.
3. If a probe is not connected to the meter, the “--------” indication will appear on the
display.
4. Contact the object to be measured with the probe.
5. Read the measured temperature in the display.
Note: If the display indicates “OL” the temperature is outside the measurement range.
Maximum, Minimum and Average Function
1. Press the MX/MN button to capture the Maximum (MX), Minimum (MN) and Average
(AVG) temperature values.
2. The lower secondary display will appear with MX and the maximum recorded
temperature displayed. The upper display will continue to measure the current
temperature. The lower display will update only when a new higher temperature is
measured.
3. Press the MX/MN button to step through MX, MN and AVG.
4. The AVG value is the true average of the measured values. Averaging will occur for 4
hours, then the average will reset and begin a new 4 hour cycle.
5. To exit the MX/MN function, Press and Hold the MX/MN button until the display returns
to standard operation.
Note: The Auto Power Off feature is disabled when the MX/MN feature is selected.
Data Hold
Press the HOLD button to freeze the reading in the display. The 'H' icon will appear on the
top center of the display. Press the HOLD button again to return to normal operation (the
'H' icon will disappear).
' Offset
1. Press the
reading as a reference for all future readings.
2. The OFFSET icon will appear in the display.
3. The stored reference value will appear in the lower secondary LCD display.
4. To exit the
standard operation.
' Offset (relative) button to zero the displayed reading and to use that
' Offset function, Press and Hold the ' button until the display returns to
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Memory
The meter memory allows for the storage and recall of up to 150 temperature
measurements.
1. Press the MEM button to store the reading into memory. “MEM” will briefly appear on
the display and the memory location will be indicated on the display.
2. Press the READ button to recall the data from the indicated memory location
a. “READ” and the stored value will appear in the display
b. Press the ▲ ▼ buttons to step through the memory locations.
c. To exit the READ function, Press the READ button.
3. To clear data in memory
a. Turn the meter OFF
b. Press and Hold the MEM button and press the power button.
c. Release the MEM button and ALL CLr and NO will appear in the display.
d. Press the ▼ button to select YES (delete data in memory) or NO (escape
without deleting).
e. Press the MEM button to implement the choice and exit the function.
Auto Power Off
To conserve battery life, the meter will go into the sleep mode if no button is pressed for 30
minutes. “P” is displayed on the LCD when this feature is enabled.
To disable the feature:
1. With the meter OFF, Press and Hold the HOLD button and press the power button.
2. P and OFF will briefly appear on the display indicating that the auto power off feature is
disabled.
3. “P” will not be displayed.
Note: Auto power off is enabled every time the meter is powered on and is automatically
disabled when the MX/MN feature is enabled.
Battery Replacement
When the “BT” low battery icon appears in the display measurement accuracy may be
affected. Replace the 6 AAA batteries by removing the rear screw and battery
compartment cover.
Cleaning
Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or
solvents. Wipe dry as necessary. Replace
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EA11A V1.0 02/07
Specifications
General Specifications
Display Multi-function LCD
Measurement Range -58 to 1999
Resolution
0.1
o
oC/o
F (-50 to 1300oC)
F <200o , 1oC/oF >200
o
Data Memory 150 sets
Input Protection 20V maximum
Display Update Rate 2.5 times per second
Over range indication "OL" appears on the LCD
Open input indication "-------" appears on the LCD
Auto Power OFF 30 minutes (if no key is pressed)
Low battery indication “BT” appears on the LCD
Power supply 6 AAA Batteries
Battery life Approximately 110 hours with carbon zinc batteries
Operating Temperature 32 to 122
Operating Humidity < 80% RH
Storage Temperature 14 to 140
o
F (0 to 50oC)
o
F (-10 to 60oC)
Storage Humidity < 70% RH
Altitude up to 2000 meters
Approvals
Dimensions 5.91x2.8x1.4" (150x72x35mm)
Weight Approx. 8.29 oz. (235g) with battery
Accuracy Specifications
Units Range Accuracy (@23 ± 5
0oF to 1832oF ±(0.3% reading + 2oF)
o
F
-58oF to 0oF and
o
1832
F to 1999oF
±(0.5% reading + 2
0oC to 1000oC ±(0.3% reading + 1oC)
o
Temperature
Coefficient
C
-50oC to 0oC and
o
1000
C to 1300oC
0.1 times the applicable accuracy specifications per oC from
o
C to 18oC and 28oC to 40oC (32oF to 64oF and 82oF to
0
o
F)
104
±(0.5% reading + 1
Note: Temperature accuracy does not include the accuracy of the type K probe.
Note: The temperature scale is based on the international temperature scale of 1990
(ITS90).
o
C)
o
F)
o
C)
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EA11A V1.0 02/07
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 on 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 at 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, 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 Care Department for information on
calibration services available for this product. Extech recommends that annual calibrations
be performed to verify meter performance and accuracy.
Technical Support: Extension 200; E-mail: support@extech.com
Repair & Returns: Extension 210; E-mail: repair@extech.com
Product specifications subject to change without notice
For the latest version of this User Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
Extech Instruments Corporation, 285 Bear Hill Road, Waltham, MA 02451
Copyright © 2007 Extech Instruments Corporation
All rights reserved including the right of reproduction in whole or in part in any form.
Support line (781) 890-7440
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EA11A V1.0 02/07
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