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Handheld Hygro Thermometer Data Logger


Handheld Hygro Thermometer Data Logger | RH318

Handheld Hygro Thermometer Data Logger

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1 year warranty CE
  • 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
Relative Humidity Measurement Instruments - View related products


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.

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):
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
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)
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What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/ Desc.
Click to expand/minimize a list of what others bought with theRH318
RH318 Star
Availability: In Stock
Handheld hygro thermometer data logger
RH318-RP Star
Availability: 1 week
Replacement probe
RH318-EXT Star
Availability: 1 week
Extension cable 1.5 m (5')
Click to expand/minimize a list of what others bought with theHH300-ADAPTER
Availability: In Stock
Power adaptor, 115 Vac
Click to expand/minimize a list of what others bought with theHH300-CABLE
HH300-CABLE Star
Availability: In Stock
RS232 interface cable
Availability: 1 week
Spare USB interface cable
All dollar amounts on this site are shown in Canadian currency. Note: Comes complete with probe, NIST calibration, USB interface cable, Windows® software, carrying case, tilt stand, 9V battery, and operator’s manual.
Ordering Example: (1) RH318 Handheld hygrometer thermometer data logger, CAD374.00