FTK+ relay / LCD / BUS
Duct sensor for measuring relative and absolute humidity, enthalpy, dew point and temperature in gaseous media of heating, ventilation and air-conditioning systems as well as clean rooms. The optional features, such as relay outputs for 2-point controllers or 2-stage 2-point controller, LCD with traffic light indication and 7-color LED allow for a wide range of applications. Depending on the model, the FTK+ can be individually configured via Thermokon USEapp. The accuracy of the humidity sensor is 2%. A hinged cover and tool-free wiring as well as removable cable entries ensure a quick and easy installation.
| Measured values | humidity, temperature, output humidity configurable |
|---|---|
| Output voltage | 2x 0..10 V or 0..5 V (adjustable via jumper; live-zero configuration via app or uConfig), min. load 10 kΩ |
| Output current | AA: 2x 4..20 mA, max. load 500 Ω |
| Output switch contact | Relay: 2x floating contact NO for 24 V ~ or 24 V = / 3 A, optional |
| Network technology | RS485 BACnet (MS/TP), LON FT (free topology), RS485 Modbus |
| Power supply | 15..35 V = or 19..29 V ~ SELV, AA: 15..35 V = SELV |
| Power consumption | max. 2,5 W (24 V =) | 4,3 VA (24 V ~) |
| Measuring range temp. | -40..+60 °C | 0..+50 °C | -20..+80 °C | -15..+35 °C, adjustable at the transducer, default setting: -20..+80 °C |
| Measuring range humidity | 0..100% rH non-condensing, enthalpy: 0..85 KJ/kg, absolute humidity: 0..50 | 0..80 g/m³, dew point: 0..+50 | -20..+80 °C, adjustable at the transducer, optionally configurable via app or uConfig |
| Accuracy temperature | ±0,3 K (typ. at 21 °C within default measuring range), passive: depending on used sensor |
| Accuracy humidity | ±2% between 10..90% rH (typ. at 21 °C) |
| Air speed | max. 12 m/s |
| Display | LCD 29x35 mm with RGB backlight, optional |
| Enclosure | enclosure USE-M, PC, pure white, LCD: cover PC, transparent, with removable cable entry |
| Protection (IP) | IP65 according to EN 60529 |
| Cable entry | Flextherm M20 for wire Ø=4,5..9 mm, Relay/BUS: M25 with fourfold cable entry for wire with max. Ø=7 mm, removable |
| Electrical connection | removable plug-in terminal, max. 2,5 mm², BUS terminal: removable plug-in terminal, max. 1,5 mm² |
| Pipe | PA6, black, Ø=19,5 mm, length 140 | 270 | 400 mm |
| Filter | stainless steel wire mesh |
| Ambient condition | -20..+70 °C, max. 85% rH short term condensation |
| Delivery content | incl. mounting flange |