Product category:
Humidity and moisture sensing systems
News Release from: Lee-Dickens | Subject: HP700 and HP800
Edited by the Processingtalk Editorial
Team on 20 September 2007
Low cost relative humidity and
temperature probes
UK instrumentation specialist Lee-Dickens has released two newly developed relative humidity and temperature probe ranges with a variety of output types available
The HP700 and HP800 series are high accuracy duct and wall mounting environmental probes for measuring relative humidity and/or temperature in applications such as air conditioning ducts, environmental chambers, drying tunnels, clean rooms, laboratories, computer rooms and storage areas The probes, which use a capacitive sensor, operate as either two wire transmitters or transducers and have a variety of output types that can be configured at the time of order
This article was originally published on Processingtalk on 17 Jan 2007 at 8.00am (UK)
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These include a 4 to 20mA, 0 to 1mA or 0 to 1 Volt DC output proportional to 0 to 100% relative humidity (0 to 100C for temperature), with accuracy better than +/-2.0% for 0 to 95% relative humidity and +/-0.3degC for temperature.
Furthermore each output can be fed from a separate power supply if loop isolation is required.
Both models are housed in a tough polycarbonate enclosure and have a polycarbonate cage to protect the sensor.
Sintered bronze or stainless steel guards can be fitted if required.
The non-processor based electronics are extremely reliable and suitable for use in operating temperatures of -10 to +70C.
The sensor on the duct mounted HP700 series has an operating temperature range of -10 to +100C.
The method of duct mounting the HP700 series is by compression fitting or by a Table E flange.
The standard probe length is 225mm, but other lengths are available.
A range of power options are available for both series including 100-120V AC or 200-240V AC, 9-30V DC, and 10-48V DC loop supply. Request a free brochure from Lee-Dickens ...
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