Relative humidity transmitter FM80 series

duct-mountresistancewith temperature measurement

OEM duct version with Polyga® measuring element Features • Accuracy: ±2.5 % RH • very high accuracy in high humidity • washable measurement element • with the robust Polyga® humidity measuring element • Long-term stability • high-grade steel sensor material • with resistance output Typs: • FM80 – Humiditymodule • TFM80 – Humidity-Temperature-Module TFM80 Module for integration in a wide range of customer-specific standard products. With resistance output, the module does not require its own power supply. POLYGA® transmitters demonstrate excellent measuring properties and accuracy in high humidity. They can be adjusted and cleaned in water. Their outstanding durability, reliability and robustness make them the classic choice for applications with extended high humidity. Remarkably straightforward and durable design The Polyga® measuring element is a unique hygroscopic fibre that changes its length depending on the humidity. The changes in the length are converted into electrical resistance values that can either be directly measured (passive transmitters) or converted further into standard analogue output signals (active FG80 transmitters).