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Humidity Temperature Meter


Humidity Temperature Meter | OMEGAETTE™ HH311 Series

Humidity Temperature Meter

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  • Triple Display
  • Temperature/Humidity Probe
  • Second Temperature Input
  • RS232 Interface
  • Timer and REL Functions
  • MIN MAX HOLD Functions
  • Resolution 0.1
  • NIST Certificate
  • Auto Power Off
Relative Humidity Measurement Instruments - View related products


The HH311 is a low cost, high performance handheld meter. It offers a triple display to show the temperature and humidity from a handheld probe and can display data from a separate K type thermocouple connected via a standard SMP type miniature connector to the T2 input. The temperature/humidity probe uses a semiconductor and polymer capacitive sensor. An optional software package is offered to allow data to be read by a PC through the RS232 port.

Range: 0 to 100% RH, -20 to 60°C (-4 to 140°F)
T2 Range: -200 to 1370°C (-328 to 2498°F)
Resolution: 0.1 (except T2 for -200 > T2 > 200)
Accuracy: ±2.5% RH at 25°C, ±0.7°C (±1.4°F)
T2 Accuracy: ±[0.5% rdg ±1°C (2°F)]
Humidity Response Time: 75 sec in slowly moving air
T1 Response Time: 40 sec in slowly moving air
Meter Dimensions: 186 H x 64 W x 30 mm D (7.3 x 2.5 x 1.2")
Probe Dimensions: 190 x 15 mm (7.5 x 0.6"), cable stretches to 1.5 m (5')
Operating Environment: 0 to 50°C (32 to 122°F), 0 to 90% non-condensing
Storage Environment: -10 to 60°C (14 to 140°F), 0 to 80% non-condensing
Power Requirements: One 9V battery (included), AC adapter 9 Vdc 10 mA min
Plug Diameter: 3.5 x 1.35 mm
RS232: 9600 bps, N, 8, 1 serial interface
Battery Life: Approx 100 hours with alkaline battery
Weight: Approx 320 g (11.3 oz)
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Part Number/Desc.
Quick Ship
Availability: 1 week
2 channel RH/Type K thermometer
Quick Ship
Availability: 1 week
Software and interface cable for HH311
Quick Ship
Availability: 1 week
Replacement MINI-TRIPOD expands 142 to 279 mm (5.6 to 11")
All prices on this site are shown in Taiwan Dollars.
Note: Includes meter, carrying case. 2 type K T/C's, battery and opertors manual. Software package is optional.
Ordering Example: (1) HH311 2 channel RH/type K thermometer, TWD8,870