JC3051 Intelligent Differential Pressure Transmitter Introduction
JC3051 intelligent differential pressure transmitter is a new type of instrument researched and developed by our company according to international advanced technology combined with many domestic technologies. This instrument adopts micro-processing technology for temperature characteristic and non-linear compensation, thus having greatly enhanced the measurement accuracy of the instrument, improved the temperature characteristic and expanded the turndown ratio. Besides, intelligent functions can be added, which further meets the requirements of high reliability and high stability of the instrument at the industrial sites. The adoption of digital technology in the capacitive pressure / differential pressure transducer not only ensures high reliability of the instrument and other superior performance, but also realizes the remote digital connection between the intelligent instrument and the control room to ensure rapid and reliable communication. The control room can remotely enquire into or make a real-time configuration of the transducer. The sensitive elements of this intelligent transducer are the same as those of general JC1151 series of capacitive transducers and featured by stability and reliability.
JC3051 Intelligent Differential Pressure Transmitter Working Principle
The intelligent PCB integrates converting circuit and processing circuit into one circuit using advanced IC and SMT technology. The micro-processor of the transducer controls the A / D and D / A converting module and performs digital communication and self-diagnosis function. When working, the micro-processor controls the A / D converting module for sampling conversion of the analog signals from the sensitive elements and converts them into digital signal so that the micro-processor can process it, including signal linearization, temperature compensation, engineering unit conversion etc. The micro-processor can also complete sensor characterization, measuring range, damping time, and other functions. E2PROM stores all the configurations and tuning parameters. Because the memory is a non-volatile memory (NVM), the parameters stored will not be lost in case of power failure. The PC working station or personal digital assistant (PDA) is used to configure and test the parameters or complete communication with any upper system supporting HART protocol. HART protocol uses industrial standard BELL202 frequency shift keying (FSK) technology to realize communication with the 1200HZ2200HZ digital signals overlapped on 4 ~ 20mA signal. The frequency signal during communication will not disturb the process signal. This intelligent capacitive transducer can perform online real-time self-diagnosis. The transducer has a presetting value of 3.9mA before delivery if it has 21mA or 3.9mA output.
JC3051 Intelligent Differential Pressure Transmitter Features
* High accuracy
* Good stability
* Small size, light weight, solid and vibration resistant
* Good compatibility, compatible with products of other companies in line with HART protocol
* Support the user to use handheld unit 272 / 275 or PC for software debugging and for real-time configuration of the instrument during its running.
* Can conduct intelligent linearization for pressure signal to ensure higher accuracy of measurement.
Technical Parameters:
Measured medium |
Liquid,gas,or vapor |
| Power supply |
12-----45V,24V DC generally |
Indicating gauge |
LCD gauge |
| Explosion-proof |
a.Flameproof type d ll BT4,b.Intrinsically safe type ia ll CT6 |
| Measuring range &zero point |
Externally and continuously adjustable |
| Positive and negative immigration |
The lower and upper limit of the measuring range shall not exceed the range
limit after positive and negative immigration. |
| Max.positive immigration:500%of the min.measuring range |
| Max.negative immigration:600%of the min.measuring range |
| Temperature range |
The range of operating temperature for the amplifier:-29~+93ºC |
| The measuring element filled with silicon oil:-40~+104ºC |
Flange-type transducer filled with high-temperature silicon oil:+15~+315ºC;
that filled with general silicon oil:-40~+150ºC |
| Volume intake capacity |
<0.16cm3 |
| Damping (step response) |
Continuously adjustable generally between 0.2s~1.67s when filled with silicon oil. |
| Starting time |
2s,preheating is unnecessary |
| Accuracy |
±0.1%FS;±0.25%FS;±0.5%FS |
Dead zone |
None(≤0.1%) |
| Stability |
Not exceeding the absolute value of the basic error of the max.range within 6 months |
| Influence of temperature |
Zero error≤±0.1%/55ºC,total error≤±0.2%/55ºC |
Influence of static pressure |
Min. ±0.2%FS,Max. ±1%FS |
| Influence of vibration |
In any axial direction,the error is±0.05%/g of the upper limit of the measuring
range when the vibration frequency is 200Hz. |
| Influence of power supply |
Less than 0.005%/V of the output range |
| Influence of load |
The load has no influence on it if the power supply is stable |
| Influence of installing position |
A maximum of 0.24KPa zero error can be generated,but it can be corrected,
without influence on the measuring range |
| Structural materials |
Isolating diaphragm:316LSST,Hastelloy alloy C,monel,or tantalum. |
| Gas exhaust/liquid discharge valve:316LSST,Hastelloy alloy C,monel |
| Flange and joint:Electroplated carbon steel,316LSST,Hastelloy alloy C,or monel |
| O-ring contacting medium:NBR,fluo rubber |
| Liquid filled:Silicon oil or inertia oil |
| Bolt:Electroplated carbon steel |
| Enclosure of electronic parts:Low-copper aluminum alloy |
| Pressure guide connecting part |
connecting screw hole on the pressurized vessel/chamber:1/4~18NPT,connecting
screw hole on the pressure leading joint :1/2~14NPT. |
| Connecting hole of the signal wire |
G1/2 |
| Weight:Approx |
3.5kg(excluding accessories) |
| Standard accessories |
Flanged joints,gas exhaust valves liquid discharge valves and one copy of instruction
manual have been provided for all the types upon delivery |
Ordering Information:
Quick Selection Table
Ordering instructions
1) If there is positive and negative migration, the migration value must be indicated;
2) If the differential pressure transducer needs to be equipped with three-valve manifold, throttling device, this shall be specified separately;
3) For the purchase of a remote transducer, it shall be determined based on the needs as per the different remote flange selection table;
4) If the remote transducer needs to be used in a vacuum and high temperature situation, it shall be specially indicated in the order;
5) The material of contacting medium O-ring includes nitrile rubber and fluorine rubber.
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