DCT 531i Precision Pressure Transmitter with RS485 Modbus RTU Stainless Steel Sensor accuracy according to IEC 60770: 0.1 % FSO The DCT 531i is characterized by very good accuracy and excellent temperature behaviour and is therefore ideally suited for applications where precise pressure measurement is necessary (e.g. test benches, leakage tests, etc.). Nominal pressure from 0 ... 100 mbar up to 0 ... 400 bar Output signal RS485 with Modbus RTU protocol Thanks to the integrated RS485 interface (based on the MODBUS RTU protocol), reliable and robust data transmission is available, which also works without problems over longer distances. Since the DCT 531i works directly with a master e.g. is coupled to a SPS, conversion losses of an analogue input card are avoided. transfer of pressure and temperature value perfect thermal behaviour excellent long term stability reset function Different mechanical and electrical connections are available so that the DCT 531i can be used in various applications without any problems. pressure port G 1/2" flush up to max. 40 bar pressure sensor welded customer specific versions Plant and machine engineering Energy industry BD SENSORS GmbH BD-Sensors-Straße 1 D - 95199 Thierstein www.bdsensors.de info@

DCT 531i Precision Pressure Transmitter with RS485 Modbus RTU Input pressure range Nominal pressure gauge Nominal pressure absolute Overpressure Burst pressure ≥ Nominal pressure gauge/abs. [bar] 10 16 25 40 Overpressure [bar] 40 80 80 105 Burst pressure ≥ [bar] 50 120 120 210 Vacuum resistance pN ≥ 1 bar: unlimited vacuum resistance Output signal Digital Supply Direct voltage Performance Accuracy 1 Long term stability Measuring rate Delay time 1 Diaphragm Media wetted parts RS485 with Modbus RTU protocol (pressure & temperature) VS = 9 … 32 VDC nominal pressure ≥ 0.25 bar: ≤ ± 0.10 % FSO nominal...

DCT 531i Precision Pressure Transmitter with RS485 Modbus RTU Technical Data Wiring diagram supply + Pin configuration / electrical connection Electrical connection Supply + Supply – A (+) B (–) Reset Shield G1/2" DIN 3852 with semi-flush sensor (pN ≤ 40 bar) * with nominal pressure > 40 bar the length of devices increases by 9 mm [0.35 in]  metric threads and other versions on request

DCT 531i Precision Pressure Transmitter with RS485 Modbus RTU Technical Data Configuration Modbus RTU Standard configuration Address Parity None Odd Even Configuration code (to specify with order) www.bdsensors.de [email protected] © 2023 BD|SENSORS GmbH – The specifications given in this document represent the state of engineering at the time of publishing. We reserve the right to make modifications to the specifications and materials.

Output RS485 Modbus RTU Accuracy standard for p N ≥ 0.25 bar: 0.10 % FSO standard for p N < 0.25 bar: 0.25 % FSO customer Electrical connection male plug M12x1 (5-pin) / metal customer Mechanical connection G1/2" DIN 3852 G1/2" EN 837 G1/4" DIN 3852 G1/4" EN 837 G1/2" DIN 3852 with semi-flush sensor G1/2" DIN 3852 open pressure port 1/2" NPT 1/4" NPT customer Seal FKM EPDM without (welded version) customer Special version standard customer 1 2 3 absolute pressure possible from 0.4 bar not possible for nominal pressure pN > 40 bar welded version only with pressure ports according to EN 837 and...