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PUR-94 is an advanced PID controller with two control loops (heating / cooling), supported by the auto-tuning function and Fuzzy-Logic algorithm. The device has a build-in REL / OC (SSR) and / or analog output, according to the customer selection: active current output, passive isolated current output or active voltage output, which can be used in the process of control. The PUR-94 controller is equipped with one universal input, type: 0/4-20 mA, 0-10V, 0-150 mV, Pt 100/500/1000 or TC (K, S, J, T, N, R, B, E). During the measurement process only one kind of input is available. Cold junction of thermocouple sensor is compensated automatically. RTD and TC inputs feature with fully linearized characteristics. Thanks to wide range of characteristic curves (linear, square root, quadratic, user-defined and volume characteristic for cylindrical tanks) the controller may be used in various process control systems. The 24V DC / 100 mA output is designed to supply measuring transducers, and the RS-485 port enables data transmission in production process monitoring systems. The controller can be configured with the local keyboard or free S-Config software via the RS-485 communication port.


Inputs universal (programmable): current; voltage; milivoltage; thermoresistance or thermocouple type K, S, J, T, N, R, B, E
Power consumption for 85 ÷ 260V AC/DC and 16V ÷ 35V AC power supply: max. 6,5 VA; 19V ÷ 50V DC power supply: max. 6,5 W
Outputs 1, 2 or 4 relays Imax=1A, Umax=30VDC/250VAC (cos fi=1)) and 0 or 1 x OC 30mA/30VDC/100mW; transducer power supply output: 24V DC +5%, -10% / max. 100 mA, stabilized, not insulated from measuring inputs
Case material NORYL-GFN2S E1
Power supply 19V ÷ 50V DC; 16V ÷ 35V AC or 85 ÷ 260V AC/DC
Protection class IP 65 (front), available additional frame IP 65 for panel cut-out sealing; IP 20 (case and connection clips)
Operating temperature 0°C ÷ +50°C (standard); -20°C ÷ +50°C (option)
Display LED, red (green on request), 4 x 20 mm high, brightness adjustable in 8 steps
Accuracy 0.1% @25°C (inputs: current, voltage, milivoltage, thermoresistance, thermo-couple K, J, E); 0.2% @ 25°C (thermocouple N), 0.5% @25°C (thermocouple S, T, R, B)
Measurement range current: 0-20 mA or 4-20 mA, voltage 0-5 V, 1-5V, 0-10V or 2-10V, milivoltage 0-60 mV, 0-75 mV, 0-100 mV or 0-150 mV; thermoresistance: Pt100, Pt500, Pt1000, measuring range -100°C ÷ 600°C; thermocouple K: -200°C ÷ +1370°C; S: -50°C ÷ +1768°C; J: -210°C ÷ +1200°C; T: -200°C ÷ +400°C; N: -200°C ÷ +1300°C; R: -50°C ÷ +1768°C; B: +250°C ÷ +1820°C; E: -200°C ÷ +1000°C
Analogue outputs (available with 2 x REL or OC, see ordering): active current: operating range 0/4-20 mA (max. 0-24 mA), load resistance 700 Ω max., resolution 13 bit passive current: isolated, operating range 4-20 mA (max. 2,8-24 mA), load resistance 600 Ω@24VDC, resolution 13 bit; active voltage: operating range 0/1-5V, 0/2-10V (max. 0-11V), load resistance min. 2000 Ω, resolution 13 bit
Communication interface RS-485, 8N1 and 8N2, 1200 bit/s ÷ 115200 bit/s, Modbus RTU (not galvanically isolated from measuring inputs)
Stability typ. 50 ppm/°C
Displayed values range -999 ÷ 9999 + decimal point
Storage temperature -10°C ÷ +70°C; -20°C do +70°C (depending on version)
Case dimensions 96 x 48 x 100 mm
Case panel mounting
Panel cut-out dimensions 90,5 x 43 mm
Installation depth min. 102 mm