WP-9000 series passive · thermocouple temperature transmitter (output loop power supply)

The WP-9000 series passive thermocouple temperature transmitter (output loop power supply) isolates and converts the on-site two-wire thermocouple signal into the required DC signal (linear with temperature) for output. Mainly used for DCS and PLC systems with input loop power supply.

　　 This temperature transmitter is a loop power supply mode, and the input loop-the output loop are completely electromagnetically isolated.

◆ Features

　　● Two-wire thermocouple (or millivolt) signal input isolation conversion.

　　● Isolated output (4-20) mA linearized with temperature.

　　● With automatic cold junction compensation function.

　　● Loop power supply (12～28) VDC.

　　● Plug and unplug terminal blocks, DIN rail card installation.

● Power supply

　　Output loop power supply: (12～28)VDC

● Input signal

　　 input channel: terminal 1 -, 2 + wiring

　　 Input type: thermocouple K, E, S, B, R, T, N, W, millivolt signal

　　 Input resistance: ≥ 20KΩ

　　 Cold junction temperature compensation range: (-15～＋75)℃

　　 Cold junction temperature compensation error: every 20℃ change error ±1℃

● Output signal

　　 output channel: terminal 11 -, 12 + wiring

　　 Output current (Io): (4～20)mA

　　Output loop power supply voltage (Ue): (12～28)VDC

　　Minimum working voltage (Ui): 12VDC

　　 output load capacity: see the following calculation diagram

Output load resistance: RL≤(Ue-Ui)/0.02

　　 Thermocouple input disconnection alarm: low current ≤3.5mA; high current ≥22mA

　　 ripple (Vp-p): <10mV

● Performance Index

　　Standard accuracy: ±0.5%FS

　　 Temperature drift: ±0.015%/℃

　　 Response time: ≤1s (10→90)%

　　 Stable time: ≤3s

　　 Insulation resistance: ≥100MΩ/500VDC (AC)

　　 Isolation capacity: 1500VAC/1 minute 50Hz

　　Anti-electromagnetic compatibility: in line with IEC 61000 related anti-electromagnetic standards

● Environmental parameters

　　Working temperature: (-20～＋60)℃

　　Storage temperature: (-40～＋80)℃

　　Environmental humidity: (5～＋95)%RH (no condensation)

● Structure

　　 Clip-on type; modular watch core; ABS material case; plug-in terminal

　　 Machine weight: about 110g

◆ Dimensions

　　 Dimensions: width × height × depth = 16 × 116 × 110 (mm)