Extech Instruments RH390 User Manual

RH390 V2.0 03/05
2
Specifications
Function Range and Resolution Accuracy
Humidity
0.0 to 100.0%RH
±2%RH (20% to 90%)
±3%RH (10% to 20% and 90 to 95%)
±4%RH typical at 1% and 99%
Temperature
-4.0 to 158.0
o
F
(-20 to 70
o
C)
±1.8
o
F (±1
o
C)
-22.0 to – 3.9
o
F
and 158.1 to 199.0
o
F
(-30.0 to -19.9
o
C
and 70.1 to 100.0
o
C)
±2.7
o
F (±1.5
o
C)
Display Dual LCD
Response Time: <30 seconds (90% of final value in moving air)
Sensor Type Humidity: Precision capacitance sensor
Temperature: Thermistor
Wet Bulb 32 to 176°F (0 to 80°C) (calculated from RH and Air
temperature measurements)
Dew Point -22 to 199°F (-30 to 100°C) (calculated from RH and Air
temperature measurements)
Operating Conditions 32 to 122
o
F (0 to 50
o
C); < 80% RH non-condensing
Storage Conditions -40 to 185
o
F (-40 to 85
o
C); <99% RH non-condensing
Power Supply 9 Volt battery
Battery Life Approx. 24 hours
Dimensions / Weight 7.8 x 1.7 x 1.3” (200 x 45 x 33mm); 7 oz. (200g)
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, whether written or oral, is expressed or implied.

Extech Instruments RH390 Specifications

General

Brand	Extech Instruments
Model	RH390
Category	Measuring Instruments
Language	English