Temperature controller R38LARR, 78x35mm, Pt100, 2 relay outputs, 24Vac/Vdc

R38LARR is an Ascon Tecnologic R38 series temperature controller in a 78 x 35 mm case with a single four-digit LED display. Its input is factory-set to 2-wire Pt100, autoranging (-50.0...+850 °C), and the process is held with ON/OFF single or double action, neutral zone or PID control with autotuning, sampled once per second.

• Input: 2-wire Pt100, autoranging (-50.0...+850 °C), accuracy +/-0.5% of span +/-1 digit at 25 °C
• Outputs: OUT1 relay SPDT 8 A-AC1 (3 A-AC3/250 Vac); OUT2 relay SPDT 8 A-AC1
• Auxiliary supply: 12 Vdc / 20 mA max. for a transmitter
• Supply: 24 Vac/Vdc +/-10%, 6 VA
• Case: 78 x 35 mm, flush panel mounting in a 71 x 29 mm cut-out, depth 64 mm, IP65 front with gasket
• Connection: fixed screw terminal block 2 x 1 mm²
• Version: mechanical keys, no internal buzzer

A compact regulator for machine builders: heating and cooling on ovens, dryers, water baths and packaging machines, where a 71 x 29 mm cut-out is available and the operator only needs a setpoint and a reading. The second relay is normally used as an alarm or as the cooling stage in double action.

Complies with EMC directive 2004/108/CE (EN 61326-1) and low voltage directive 2006/95/CE (EN 61010-1). Operating temperature 0...+50 °C, humidity 20...85 RH% without condensation.