The RH318 is a low cost, 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)