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Weather Stations and Instruments \ Weather and Environmental Sensors \ Rain Sensor Model 205

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Rain Sensor Model 205

Infrared type rain sensor with 4 and 20mA output ( 4mA = no rain, 20mA = rain ). This unit has a heated sensor and is not affected by dust or dirt. Fast response time of < 2 minutes.

2-3 Weeks Del.

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Product details

Measurement principle

The optical rain sensor 205 has a new principle of precipitation detection. The 205 has infrared/ red transmitters and an infrared/red receiver. Only changes on the glass surface of the sensor are measured. For this reason the sensor is not sensitive for dust or dirt. The output signal switches between 4 and 20 mA (open collector output is also available). No precipitation is equal to 4 mA and precipitation is equal to 20 mA. When there is precipitation the open collector output switches to GND (Ground). A heater is mounted to prevent failure due to dew and to ensure a fast response time at the end of a precipitation period.

Advantages

• Not sensitive for dust or dirt
• Long life
• Heater included (inside sensor)
• Small size
• 4/20 mA and open collector output
• Fast response time

PERFORMANCE

Operating Temperature: -30° to + 50°C
Output signals: 4 mA @ No precipitation 20 mA @ Precipitation
Open collector output (max. 26V, 200mA)
Response time: < 2 minutes

INSTALLATION

Installation: Free from obstacles and mounted at an angle of 30°
Mounting: On a mounting bracket which is fitted inside a windscreen
to a vertically mounted Ø 48 mm pipe or on top of aradiation shield (model 303).

Electrical Connection: 6 x 0.25 mm2 shielded cable (1.5 m.)

PHYSICAL

Dimensions: 62.5 x 62.5 x 40 mm
Weight: < 0.5 kg
Material: Epoxy and glass
Static discharge: The instrument is protected against outside inductive interference up to a discharge power of 1500 Watt.
Protection: IP-65

ELECTRICAL

Supply voltage: 15 VAC or 16...24VDC
Power consumption: < 140 mA with heater low level < 170 mA with heater high level

Output signals: 4/20mA (load <250 Ω) and Open collector

GENERAL

Warranty: 1 year

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For further information, technical advice, or a quotation please call or email us. If you are not sure which product you need one of our technical sales advisors will be happy to discuss your application. We also accept company purchase orders by fax or post. Credit card orders can also be placed over the phone for any product.

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Rain Sensor 205

Optical Rain Detector Industrial Class. Measuring principle: optical. Not sensitive for dust or dirt. Supply voltage: 15 VAC / 14-26 VDC 150 mA max. Output: 4-20 mA or Open Collector (see datasheet). Fast response time: < 2 min (80%). Includes heater Operating temperature: - 30…+50 degrees C. Dimensions: 55 x 55 x 42 mm

■	Data Sheet

390.00


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