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Humidity Probe for Handheld Meters - RHA

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• Low cost
• Voltage output signal
• Built-in temperature sensor available
• May be used with H5800 handheld meter or separately
• Compact and convenient in use
• Fast connection
• Operating Ambient temperature: -10 ~ 50°C
• Operating Ambient humidity: 0 - 85 %RH, non-condensing

Model Number: RHA
Data Sheet:

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Product Specification

RH/T Probe for Handheld Meters RHA

• Low cost
• Voltage output signal
• Built-in temperature sensor available
• May be used with H5800 handheld meter or separately
• Compact and convenient in use
• Fast connection

Using thin-film sensor, whose capacitance varies proportionally to medium relative humidity, RHA measures relative humidity of air and non-aggressive gases at normal ambient pressure and converts it into standard voltage signal. Based on the RHT transducer, but with its electronics fitted into a cylindrical body, this probe is especially suitable for fast measurements in combination with handheld humidity measuring devices that feature programmable or scalable input. Furthermore, a platinum temperature sensor may be built in the probe for simultaneous medium temperature measurement.

Through its flexible cable with miniature connector, the RHA probe can be easily connected to a H5800 meter to form a lightweight multifunctional and widely applicable device for handheld relative humidity measurement.

RHA Humidity Probe Technical Specifications

Input
Humidity	capacitive sensor, 0 - 100 %RH
Temperature (option)	Pt100 or Pt1000 (w=1.385) (1) , -10 ~ 50°C
- accuracy	class 'B'
Output
Output voltage	min. 0...max. 100 mV DC
Linearity proportional to	measured value
Accuracy
Measurement error	2.5% from span
Non-linearity	within measurement error
Temperature drift	0.1% from span for 1 °C
Power supply
Supply voltage	DC from the handheld meter
Admissible variations	20 mVp-p at 50 Hz
Operating conditions
Ambient temperature	-10 ~ 50°C
Ambient humidity	0 - 85 %RH, non-condensing
Design and materials
Case material	stainless steel
Sintered filter (option)	stainless steel, 75 μm
Wiring	1-5 m PVC or silicone cable w/ 4-pin M8 connector type 'C3'
Dimensions	ø16x min. 120 mm (w/o cable and filter)
Weight	30 g (w/o cable and filter)
Protection class	IP54 (except sensor)

RHA Humidity Probe Ordering Code RHA - G8 - #1.#2

Code	Feature or option	Code values
G8	Cable length 'k' [m] and type	1PV…5PV - PVC, 1SL…5SL - silicone
#1	Built-in temperature sensor	X - none, D - Pt100, G - Pt1000
#2	Sintered filter	X - none, S - sintered filter mounted