Supplied with a liquid crystal display with colour change backlighting
Fischer's FT61 measuring device for humidity and temperature has a built-in capacitive sensor for use in cleanrooms, ventilation rooms and fire smoke pressurisation/isolation rooms.
The German measuring and control technology specialist supplies the device with a liquid crystal display with colour change backlighting as a cleanroom signal light. It is long-term stable without needing frequent calibration.
The FT61 also comes with an integrated control system for zero, calibration setting without any need for a PC or laptop, backed up by in-situ adjustment and password protection to avoid unauthorised access. It measures a humidity range of 20–85% and temperatures of –25 to +85º. It is a three-wire device with analogue output 4–20mA, 0–10V for PLC, SCADA, BMS. There are two solid state relay contacts for switching. It works on 24V DC/AC and comes with IP 65 weatherproof protection.