Handheld Hygro Thermometer Data Logger
Thermistor Sensor for Temperature Measurement, Fast Response Time. Large Backlit Dual LCD Display, MAX/MIN/HOLD Function. Dew Point Measurement. 16,000 Record Data Logger. USB Cable Included, RS232 Cable (Optional). Interchangeable Probes. Windows® Software. Auto Power Off. Low Battery Indicator. Tilt Stand Included. More
Item# (PN): RH318 Shipping and Payment
The RH318 is a high performance handheld meter with data logging ability. It offers a large dual back-lit display to show the temperature and humidity from a handheld probe and can display a dew point measurement. The temperature/humidity probe uses a semiconductor and polymer capacitive sensor and a thermistor temperature sensor.
Windows® based software and USB interface cable is included to allow real time or recorded data to be read by a PC through the USB/RS232 port (RS232 interface cable is optional). Probe can extend up to 1.5 m (5') with optional extension cable.
SPECIFICATIONS:
Sensor Type: Electronic capacitance polymer film sensor/NTC
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 Probe (RH318-RP): <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)
Response Time (In Slow Moving Air):
Humidity: 180 s
Temperature: 10 s
Sensor Hysteresis: <1.5% RH
Temperature Coefficient: 0.1 x (specified accuracy) per 1°C (<23°C or >23°C)
Sample Rate: Two times per second
Battery Type: 9V battery (included)
Battery Lifetime: Approx. 80 hours (alkaline battery)
AC Adaptor (Optional): 9 Vdc (8 to 10 Vdc max )
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: 185 L × 65 W × 36 mm H (7.3 x 2.6 x 1.4")
Probe: 15 D x 94 mm L (0.6 x 3.7")
Weight: Approx. 285 g (10 oz)
Environment Conditions:
Altitude: Up to 2000 m (6562')
Relative Humidity: 90% max
Operation Ambient Temperature: 0 to 40°C (32 to 104°F)
How is Temperature Measured?
Temperature can be measured via a diverse array of sensors. All of them infer temperature by sensing some change in a physical characteristic. Six types with which the engineer is likely to come into contact are: thermocouples, resistive temperature devices (RTDs Pt100 and thermistors), infrared radiators, bimetallic devices, liquid expansion devices, and change-of-state devices.
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