Extech- RH300

Extech- RH300
Digital Psychrometer
External Probe Temperature measurements for differential
Calculates T1-T2 differential (Air Temperature minus External Probe Temperature)
Features:
• 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
RH305 Digital Psychrometer Kit
includes RH300, 33% and 75%
calibration bottles, temperature
probe, and carrying case.
Unique sensor cap design
Twist to open or close sensor
for storage.
Specifications :
Humidity
Temperature (internal)
Temperature (external)
Dew Point
Wet Bulb
Dimensions
Weight
Range
Max Res olution
10 to 90%RH
0.1%RH
-4 to 122°F (-20 to 50°C)
0.1°
-4 to 158°F (-20 to 70°C)
0.1°
-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)
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)
more infor for Extech RH300
Phone: 01235 838 555
Email: [email protected]
Web. www.airconcern.co.uk
Air Concern Ltd, Building 173 Curie Avenue Harvell Didcot, Oxfordshire
Bas ic Accuracy
±3%RH
±1°F or ±0.6°C
±1°F or ±0.6°C
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