Handheld Temperature/ Indicator Model RH31 Features ߜ Simultaneous ߜ Data Hold Function The RH31 digital Digital Display of Both Provided thermo- is compact Temperature and ߜ C/ F Switchable and easy to use and has Humidity ߜ features of simultaneous Power Auto-Off Function display of temperature and ߜ Display of Relative Provided humidity, selectable display Humidity, Dew-Point ߜ Model with Memory of relative humidity, dew-point Temperature and Function are Available temperature, wet-bulb Wet-Bulb Temperature (RH31-RS232) temperature, and data hold. is Selectable (Temperature, Humidity, The RH31-RS232 has an ߜ Interchangeable Measuring Time) RS-232C serial communications Sensors with Connectors interface for datalogging to a x 1500 Data Points. computer. Specialized humidity sensors– general type, thin type and separated type – are interchangeable. Units RH31 Series are °C/ °F switchable by internal jumper. $ RH31-RS232 420 shown with Basic Model optional sensors

RH31

Hu-11 Model RH31 Display Part RH31-RS232 Indication of temperature, Specifications humidity, unit and battery shortage mark and Features Power switch

Specifications Hold key RH31 Meter Measuring range: Read key Transmission Temperature: –10 to 60°C of data storage Relative humidity: 0 to 100% RH to personal computers Accuracy rating: Clear key Temperature: Write key ±(0.1% of measured value +0.2°C) Setting of Relative humidity: current time and data General type sensor ±(0.1% of measured value +0.2% RH) storage Dew-point temperature: ±1.0°C starting Wet-bulb temperature: ±0.8°C time Thin type sensor (at temperature 25°C and relative humidity 50% RH) Temperature coefficient (per 10°C): Separated type sensor Temperature: Select Key ±(0.2% of measured value +0.1°C) selection of relative humidity, Relative humidity: temperature or wet-bulb temperature

±(0.2% of measured valued +0.1% RH) General Type RH31-1 Display: 158 1 (6.3) 3 ⁄2 digits LCD (Liquid crystal) digital display Temperature, relative humidity, dew-point temperature, wet-bulb Hu temperature, unit, battery O 18 (.72) shortage mark 30 128 Unit: mm (inches) Resolution: (1.2) (5.1) Temperature: 0.1°C/0.1°F

Relative humidity: 0.1%RH Thin Type RH31-2 280 Memory function: (11.2) Data: 1500 data each of temperature and humidity Content: Temperature, humidity O8 (.32) Measurement Time Interval: 145 135 10-minute (5.8) (5.4) Unit: mm (inches) Communications interface: RS-232C (with communication cable) Remote Type RH31-3 Working temperature range: 1196 0 to 50°C (32 to 122°F) (47.8) Working humidity range: 6 (.25)

0 to 85%RH 10 (no dew condensation is allowed) 50 1000 146 Unit: mm (inches) Power Voltage: (2.0) (40.0) (5.8) Exclusive lithium battery 1 piece (7.2 Vdc) With filter: Approx. 3 minutes polymer film Battery life: (90% response) Cable length: Approx. 400 hours Sensor element: Standard 1 m (3'), Maximum 5m (16') (at normal temperature and humidity) Temperature: Platinum resistance Weight (with 1m of cable): Weight: Approx. 180 g (6.3 oz) thermometer (JIS Class A) RH31-1: Approx. 60 g (2.1 oz) (without memory function) Approx. Humidity: Capacitance type high RH31-2: Approx. 70 g (2.5 oz) 190 g (6.7 oz) (with memory function) RH31-3: Approx. 100 g (3.5 oz) RH31 SENSORS Measuring range: To Order (Specify Model No.) Temperature: Model Number Price Description -10 to 60°C (14 to 140°F) RH31 $420 Thermohygrometer, no data memory Relative humidity: 0 to 100%RH Accuracy rating: RH31-RS232 765 Thermohygrometer with RS-232 Temperature: ±0.15°C (at 0°C), Communications and Data Memory ±(0.15+0.002 [t])°C, RH31-1 250 Probe, General Purpose RH/Temp t: Measured temperature (°C) Relative humidity: ±3%RH RH31-2 295 Probe, Thin Diameter RH/Temp (at 25°C, 0 to 90%RH) RH31-3 380 Probe, Remote with 40" Cable Temperature coefficient: CAL-3-HU 125 NIST Traceable Calibration Relative humidity: ±1%RH (Reference 25°C, per 10°C) Note: Probes sold separately. Units come complete with operator’s manual. Response: Ordering Example: RH31-RS232, RH31-1, Thermohygrometer with RS-232 and Without filter: Approx. 1 minute Data memory with general purpose probe, $765 + 250 = $1015 (90% response) Hu-12 One Omega Drive | Stamford, CT 06907 | 1-888-TC-OMEGA (1-888-826-6342) | [email protected] www.omega.com

UNITED KINGDOM www. omega.co.uk Manchester, England 0800-488-488

UNITED STATES FRANCE www.omega.com www.omega.fr 1-800-TC-OMEGA Guyancourt, France Stamford, CT. 088-466-342

CANADA CZECH REPUBLIC www.omega.ca www.omegaeng.cz Laval(Quebec) Karviná, Czech Republic 1-800-TC-OMEGA 596-311-899

GERMANY BENELUX www.omega.de www.omega.nl Deckenpfronn, Germany Amstelveen, NL 0800-8266342 0800-099-33-44

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