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ProSens QM-422

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ProSens is a new line of modern industrial instruments, which integrates sensors, converters, meters and controllers functionalities. Using the latest miniaturisation technologies these compact instruments are able to be equipped with one independent universal input, two binary or two analogue outputs, as well as communication port RS-485 with Modbus protocol.

Model QM-422 has integrated axial temperature or temperature and humidity probe, Ø 12 mm, L=300 mm,
stainless steel 316L probe and filter cap.

A large built-in display and output signals mean that the ProSens line units find applications in control systems. There are many industrial applications, where ProSens can act as stand-alone controller. It can also cooperate with master devices via Modbus protocol, being part of big network, which makes it perfect instrument for distributed monitoring system.


New web site dedicated to ProSens line:



Inputs 0 or 1 universal: current; voltage; thermocouple K, S, J, T, N, R, B, E types
Power consumption max. 2,5 W
Type of probe integrated axial, L=300 mm, Ø 12 mm, stainless steel 316L probe and filter cap
Probe parameters temperature sensor: measuring range: -50 ÷120°C (typ.err. ±0,5°C @ -10 ÷ 85°C) or temperature and humidity sensor: measuring temperature range: -40 ÷ 125°C (typ.err. ±0.2°C @ 10 ÷ 60°C; 0.4°C @ -30°C; 0.7°C @ 120°C); measuring humidity range: 0 ÷ 100% RH (typ.err. ±1.8% RH; 10÷90% @ 25°C)
Case material ASA LURAN + polycarbonate
Protection class IP 67 (version without display); IP 65 (version with display)
Operating temperature -30°C ÷ +80°C, case with electronics (out of range -20 ÷ +70°C LCD and IR receiver turn off)
Display optional: graphic LCD, 128 x 64 points, with backlight
Power supply 24V DC (11 ÷ 36V DC); for versions with voltage output min. 16V DC
Accuracy 0.1% @25°C ± one digit (inputs: current, voltage, milivoltage, thermoresistance, thermocouple K, J, E); 0.2%@ 25°C (thermocouple N), 0.5%@25°C (thermocouple S, T, R, B)
Measurement range current: 0/4-20 mA; voltage: 0/1-5 V, 0/2-10V, 0-60 mV, 0-75 mV, 0-100 mV, 0-150 mV; RTD: Pt100, Pt500, Pt1000, measuring range: -100°C ÷ 600°C; thermocouple: type K, S, J, T, N, R, B, E; measuring ranges: -200°C ÷ +1370°C (K); -50°C ÷ +1768°C (S); -210°C ÷ +1200°C (J); -200°C ÷ +400°C (T); -200°C ÷ +1300°C (N); -50°C ÷ +1768°C (R); +250°C ÷ +1820°C (B); -200°C ÷ +1000°C (E)
Binary outputs 0, 1 or 2 electronic NO relays, 24V AC/35V DC, max. 200 mA
Analogue outputs 0, 1 or 2: active current: operating range 0/4-20 mA (0-24 mA max.); passive current: isolated, operating range 4-20 mA (2.8-24 mA max.); active voltage: operating range 0/1-5V, 0/2-10V (0-11V max.)
Temperature stability typ. 50 ppm/°C
Communication interface RS-485, 8N1 and 8N2, 1200 bit/s ÷ 115200 bit/s, Modbus RTU, not galvanically isolated
Case wall mounted
Case dimensions 120 x 90 x 50 mm
Software free S-Config 2 software for ProSens line can be downloaded directly from "Download" section (top menu)