RH305-NIST EXTECH INSTRUMENTS, RH305-NIST Datasheet
RH305-NIST
Manufacturer Part Number
RH305-NIST
Description
DIGITAL PSYCHROMETER, 90%RH, ±3%
Manufacturer
EXTECH INSTRUMENTS
Datasheet
1.RH300-CAL.pdf
(1 pages)
Specifications of RH305-NIST
Humidity Range
10% To 90%
Accuracy %
3%
Resolution (°c)
0.1°C
External Height
178.5mm
External Width
48.4mm
External Depth
24.7mm
Lead Free Status / RoHS Status
na
www.extech.com
Digital Psychrometer
Ordering Information:
RH300 ..........................Digital Psychrometer
RH300-NIST ................RH300 with NIST Certificate
RH305 ..........................Digital Psychrometer Kit
RH305-NIST ................RH305 with NIST Certificate
RH300-CAL ..................33% and 75% RH calibration reference
TP890 ..........................Optional Thermistor Temperature Probe (for Model RH300)
Features:
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Simultaneous display of %RH, Temperature and
Dew point or Wet Bulb or Probe Temperature
Wet bulb measurements without slinging
Calculates T1-T2 differential (Air Temperature minus
External Probe Temperature) using optional probe (TP890)
and T2-Dew Point
Unique sensor cap design twists to closed
position for protection during storage
Switchable °F/°C temperature units with 0.1° resolution
Data Hold freezes current reading on display
Max/Min readings
Auto power off to save battery life
RH300 complete with 2 AAA batteries
Optional external temperature probe (TP890)
Optional kit RH305 includes RH300, temperature probe,
33% and 75% calibration bottles, and carrying case
RH300-CAL Optional
calibration salt bottles
Calculates T1-T2 differential (Air Temperature minus External Probe Temperature)
External Probe Temperature measurements for differential
Unique sensor cap design
Twist to open or close sensor
for storage.
RH305 Digital Psychrometer Kit
includes RH300, 33% and 75%
calibration bottles, temperature
probe, and carrying case.
Specifications subject to change without notice.
Copyright © 2007-2008 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.
Humidity
Temperature (internal)
Temperature (external)
Dew Point
Wet Bulb
Dimensions
Weight
Specifications:
Range
10 to 90%RH
-4 to 122°F (-20 to 50°C)
-4 to 158°F (-20 to 70°C)
-90.4 to 122°F (-68.0 to 49.9°C)
-6.9 to 122°F (-21.6 to 49.9°C)
7 x 1.9 x 1" (178.5 x 48.4 x 24.7mm)
3.3oz (95g)
Max Resolution
0.1%RH
0.1°
0.1°
±3%RH
±1°F or ±0.6°C
±1°F or ±0.6°C
Basic Accuracy
7/1/08 - R1