RH355 datasheet(6/6 Pages) EXTECH

6 / 6 page

RH350/355 V2.1 8/08

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

Specifications

Function

Range and Resolution

Accuracy

Humidity

0.0 to 100.0% RH

±3% RH (10 to 90%)

@ 23

°C

Temperature (air)

-4.0 to 122.0

oF (-20 to 50oC)

±1.8

oF (±1oC)

Temperature (external K)

-40 to 1832

oF (-40 to 1000oC)

±(0.3% rdg + 1.8

oF (1oC))

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

oF (-68 to 50oC) (calculated from RH and Air

temperature measurements)

Wet Bulb

-6.88 to 122.0

oF (-21.6 to 50oC) (calculated from RH and Air

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

oF (-20 to 50oC); < 99% RH non-condensing

Storage Conditions

-40 to 185

oF (-40 to 85oC); <99% RH non-condensing

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

symbol will appear on the LCD. Replace the four (4)

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.

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