The FHA646-E1 is a capacitive humidity sensor designed for use with ALMEMO¬Æ series indicators and data loggers. It measures relative humidity in the range of 0 to 100% RH with an accuracy of ¬±2% RH for values below 90% RH at a nominal temperature of +23 ¬±3 ¬8C. The sensor features a plug-in design, allowing for easy replacement when necessary. In addition to humidity, the sensor can measure temperature from -50 to +125 ¬8C, utilizing an NTC type sensor with varying accuracy depending on the temperature range. The device provides two analog output options of 0 to 10 V or 0/4 to 20 mA, which can be customized based on user requirements. The FHA646-E1 operates within an ambient temperature range of -10 to +60 ¬8C and can withstand storage temperatures from -30 to +70 ¬8C. It is housed in a wall-mounted plastic enclosure with an IP40 protection class, making it suitable for stationary measuring operations in various environments.
The FHA-Series humidity sensors work with ALMEMO® series indicators and data loggers to provide accurate measurement of relative humidity, temperature, dew point, mixture ratio, enthalpy, and partial vapor pressure. The capacitance sensor used in the FHA-series contains a glass substrate with a humidity-sensitive polymer layer between two metal electrodes. The absorption of water in the thin film changes with relative humidity, and therefore changes the capacitance between the two electrodes. The measuring signal is directly proportional to the relative humidity and is independent of changes in atmospheric pressure. Standard sensor cable length is 5 feet.
| Clark Solutions | |
|---|---|
| Product Category | Moisture Meters |
| Product Number | FHA646-E1 |
| Product Name | Capacitive Humidity Sensor |
| Technology | Capacitive |
| Application | Moisture / Water Content in Gases / Air |
| Variables Measured | Relative Humidity; Temperature |
