Table of Contents
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Specifications
Function
Humidity
Temperature (air)
-4.0 to 122.0
Temperature (external K)
-40 to 1832
Display
Triple LCD
Sensor Type
Humidity: Precision capacitance sensor
Internal Temperature: Thermistor
External Temperature: K-Type Thermocouple
Response Time
60 seconds typical
Dew Point
-90.4 to 122.0
temperature measurements)
Wet Bulb
-6.88 to 122.0
temperature measurements)
Low Battery Indicator
Yes
Overrange Indicator
E2 (air) E5 (T1), E8 (T2)
Underrange Indicator
E3 (air), E6 (T1), E9 (T2)
Operating Conditions
-4 to 122
Storage Conditions
-40 to 185
Power Supply
4 x 1.5V 'AAA' batteries
Battery Life
Approx. 300 hours
Dimensions / Weight
9 x 2.2 x 1.7" (230 x 57 x 44mm); 5.3 oz. (153g)
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 manual).
Battery Replacement
When the battery power falls low, the
1.5 'AAA' batteries by removing the rear battery compartment cover and accessing the
battery compartment. Observe polarity when placing the batteries in the compartment.
Ensure that the compartment cover is securely fastened when finished.
Support line (781) 890-7440
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's Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
Copyright © 2008 Extech Instruments Corporation (a FLIR company)
All rights reserved including the right of reproduction in whole or in part in any form.
Range and Resolution
0.0 to 100.0% RH
o
o
F (-20 to 50
C)
o
o
F (-40 to 1000
C)
±(0.3% rdg + 1.8
o
o
F (-68 to 50
C) (calculated from RH and Air
o
o
F (-21.6 to 50
C) (calculated from RH and Air
o
o
F (-20 to 50
C); < 99% RH non-condensing
o
o
F (-40 to 85
C); <99% RH non-condensing
symbol will appear on the LCD. Replace the four (4)
6
Accuracy
±3% RH (10 to 90%)
@ 23°C
o
o
±1.8
F (±1
C)
o
o
F (1
C))
RH350/355 V2.1 8/08
www.burntec.com
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