Center 318 - Operating Ranges; Resolution and Accuracy

Hygro-Thermometer
2
Relative humidity range: 0 to 100%RH
Temperature range: -20 to 60°C (- 4 to 140°F)
Dew point temperature range: -20 to 60°C (- 4 to 140°F)
Resolution: 0.1%RH, 0.1°C, 0.1°F
Accuracy: (at 23°C)
<Probe: RP-32>
<10%RH, >90%RH ±4.0%RH
10%RH to 90%RH ±2.0%RH
-20 to 60°C (-4 to 140°F) ±0.8°C (±1.5°F)
<Probe: RP-31>
<10%RH, >90%RH ±5.0%RH
10%RH to 90%RH ±3.0%RH
15 to 35°C (60 to 95°F) ±0.8°C (±1.5°F)
<15°C (60°F), >35°C (95°F) Refer to chart
Response time: (@ t90; in slowly moving air) ; Humidity: 60 sec. ; Temperature: 10 sec.
Sensor hysteresis: <1.5%RH
Temperature coefficient: 0.1 x (specified accuracy) per 1°C (<23°C or >23°C)
Sample rate: 2 times per second
Battery type: 9V Battery
Battery lifetime: Approx. 80 hours (alkaline battery)
AC adapter: 9V DC(7~10V Max.)/20mA Min (Plug Diameter: 3.5mmx1.35mm)
Operation temperature: 0 to 40°C (32 to 104°F)
Operation humidity: 10 to 90%RH
Storage temperature: -10 to 60°C (14 to 140°F)
Storage humidity: 10 to 75%RH
Dimensions:
Meter: 185mm(L) × 65mm(W) × 36mm(H)
Probe: RP-32: 15mm Diameter x 94mm(L); RP-31: 15mm Diameter x 82mm(L)
Weight:
Approx. 285g
Standard Accessories:
Instruction manual, 9V Battery, windows software, carrying case, USB cable.
Optional Accessories:
AC adapter, RS-232 Cable, Extension cables, 33%RH/ 75%RH humidity standard.