JT3051DH Capacitive HART Circuit Board
  • JT3051DH Capacitive HART Circuit Board

JT3051DH Capacitive HART Circuit Board



JT3051DH  Capacitive HART Circuit Board uses advanced completely isolation technology. The power side is islolated by transformer, signal side isolated by opticalcoupler to make transmitters with good anti-interface, thus ensure high realiability and stability. Parameters configuration and compensation of transmitters can be done by buttons, HART communicators or HART configuration programs, improving precise level and accuracy of transmitters. JT3051DH  matches capacitive differential pressure sensor and is suited for 3051 housing


1. Easy adjusting by buttons: on-site span changing by LCD module buttons free from standard pressure source; for headless type, PV reset and span correction with pressure source done by buttons on mainboard

2. High accuracy: for intelligent board, AD accuracy > 20 bits, DA accuracy > 16 bits;

3. Good stability: Linearity better than 0.1%, temperature conpensation accuracy better than 0.5%

4. Data backup and restore

5. Eletrical isolation: >1500VDC

6. Communication protocol:4~20mA output with HART protocol digital communication (two wires)

7.  Adjusting method: through communicator or telemanagement via PC configuration adjusting program

Technical Parameters: 

Supply power

DC12-32V (DC 24V is suggested)

Matching sensor

Metal capacitive sensor

Sampling rate


Displaying and bits

LCD with backlight, displaying 5 bits, and 4 decimal places

Displaying interface

English or Chinese,displaying pressure, temperature/current/ percentage(interactive display) and 0-100% analog displaying

Displaying units

Dozens of displaying units, kPa, m4H2O, MPa, M, inH2O etc.

Output resolution


Temp. compensation accuracy

-30~70℃ complete machine accuracy is better than 0.5% (including accuracy of sensor)

Linearity accuracy

Complete machine linearity is better than 0.2% (Multi-point calibrating is available as required)




Power isolation, signal isolation (magnetic isolation)

Range ratio


Circuit protection Measurement

 surge current protection, Reverse Power Protection

Circuit design

Intrinsic safety

Isolation range


Communication Protocol


Adjusting method

by buttons on LCD head or program on pc, HART communicator


OD=61mm, Mounting hole pitch=55.14mm (suited for gauge,differential, micro differential pressure transmitter in JT3051DH housing)

Motherboard buttons operation

reset, lower range calibration(zero drift under pressure source), upper range calibration (full scale calibration)

LCD head buttons operation

changing span units, decimal place, damping time, currant fixing, output features, current fixxing, write-protection,calibration (zero clearing, lower point and full scale calibration), language setting, media density (only unit M) and factory reset


  • Company Name:Hefei WNK Smart Technology Co., Ltd
  • Add:5F, Bldg 2A-2B, Mingzhu Industrial Park,  Intersection of Mingzhu Ave and ChuangXin Ave, High-Tech Zone Hefei 230000, China
  • Contacts:Ms. WNK
  • Mob:+86-18156545248
  • Tel:
  • Email:[email protected]