The HUMICAP Handheld humidity and temperature meter HM34 provides a fast and convenient way to accurately spot-check relative humidity and temperature.

FEATURES & BENEFITS

Ideal for spot checking humidity levels Measurement range 0 to 100% RH Fast response with ±2% accuracy Temperture measurement range -20 to 60°C (-4 to +140°F) Lightweight, pocket-sized Incorporates Vaisala HUMICAP Sensor that provides high accuracy, excellent long-term stability, neglible hysteresis, and insensitivity to dust and most chemicals Extendable probe Automatic POWER-OFF Available in either °F or °C NIST traceable (certificate included)

HUMICAP PERFORMANCE

The HM34 incorporates the Vaisala HUMICAP Sensor, which is accurate, durable and insensitive to dust and most chemical contaminants. Both the humidity and temperature sensors are housed in an extendable probe that retracts back into the rugged plastic casing for storage, creating a compact and easy to carry device.

FAST AND EASY-TO-USE

In measurement mode, the extendable probe just slides out. Normally, measurement takes only a few seconds. The HM34 meter includes a HOLD button which allows the user to retain an RH or Temperature measurement until it has been noted or recorded. If no button are pressed for three minutes, the unit automatically sitches itself off. This automatic POWER-OFF function prevents the possibility of accidental discharge of the HM34's battery. After the measurement is completed, the probe is slid back into the meter casing. Between spot checks, the meter is normally stored in its carrying case.

EACH UNIT INCLUDES

9V battery Attached probe 0.2µm protective membrane filter Carrying case

SPECIFICATIONS
Relative Humidity
Measurement Range	0 to 100% RH
Accuracy	±2% (0 to 90% RH) ±3% (90 to 100%
Resolution	0.1% RH
Temp. Dependence	±0.04% RH / °C
Sensor Type	HUMICAP H thin film capacitive sensor
Response time (90%)	15 seconds with membrane filter 5 seconds with plastic grid
Temperature
Range	-20 to 60°C (-4 to 140°F)
Accuracy	±0.3°C (±0.54°F)
Resolution	0.1°C (0.1°F)
Temp. Dependence	±0.02°C/°C (±0.02°F/°F)
Sensor	Pt 100 IEC 751 1/3 Class B
General
Display	3-1/2 digit LCD
Hold Function	Push-button hold of displayed value
Power Supply	9V battery
Battery Operation Time	50 hours
Automatic POWER-OFF	After 3 minutes, unless HOLD is activated
Operating Temp. Range	-20 to 60°C (-4 to 140°F)
Housing	ABC plastic
Sensor Protection	Standard: plastic grid, part no. 6221 Optional: sintered filter 133 mm part no. 0195
Weight	180g with battery
Complies with	EMC standard EN61326-1:1997 + Am1:1998; Portable Equipment
Dimensions in mm (in.)

CAT. NO.	DESCRIPTION
VAHM34C-00	Pocket size relative humidity meter with °C temperature reading
VAHM34F-00	Pocket size relative humidity meter with °F temperature reading