3151TG Smart pressure transmitter

3151TG Smart pressure transmitter

Features of 3151TG Intelligent Pressure Transmitter

1. Complete measurement range: 0-0.15kPa ～ 42MPa, with multiple choices and flexible applications, which can meet the needs of most users.

2. Small, firm and vibration resistant structure. Integrated junction box, local zero point and range adjustment and LCD display configuration buttons simplify installation, calibration and operation.

3. The non-contact local zero point, range adjustment and LCD LCD display parameter configuration buttons are designed on the transmitter housing to facilitate the field adjustment of zero point and range and the setting of required field display parameters.

4. The solid, plug-in printed circuit board and modular structure are adopted, which is helpful for troubleshooting and reducing the parameters of spare parts inventory.

5. The damping is adjustable, which improves the user's selectivity.

6. Intelligent circuit, convenient for users to operate.

7. It has independent anti-interference circuit and software anti-interference design, which improves the reliability of the product.

8. There is a sensor for measuring temperature parameters inside, which improves the compensation performance of the transmitter for environmental temperature impact. Since the sensor directly contacts the measured medium, the temperature information of the medium in contact with the sensor can be obtained at the same time.

9. The field digital display meter configured for the transmitter can directly display the measured pressure value, output analog current value, percentage value of the measured pressure corresponding to the set range, and the temperature value of the sensor body and its contacted medium. This technology has been applied.

10. The transmitter improves the fault recovery ability and greatly reduces the transmitter maintenance workload.

11. The LCD display meter works in a multi parameter cyclic display mode.

12. It has the HART protocol remote communication function. While realizing the pressure measurement, it adds the temperature detection function of the sensor body and the contacted medium, which provides users with more information about the on-site working conditions and helps users improve the effect of process control.

13. Differential capacitive pressure sensor with all metal seal δ The innovative design of the chamber structure makes the differential pressure (pressure) and temperature measurement achieve significant improvement and good stability.

Overview of 3151TG Intelligent Pressure Transmitter

As a high-precision intelligent field differential pressure parameter detection instrument, it is used to measure the differential pressure, pressure and liquid level parameters of various media in the state of liquid, gas and steam, and convert the measured differential pressure parameters into 4-20mA standard electrical signal output. At the same time, it uses HART protocol, and has the function of communicating with the manual operator or upper computer. The transmitter has the function of output parameter configuration, which can meet the needs of different users. It can accurately measure differential pressure, liquid level, vacuum degree and specific gravity.

The transmitter has a dust-proof structure, which is easy to install, use and adjust. The terminal block and the electronic circuit board are placed in the sealed electrical chamber on the upper part of the transmitter and separated from each other. Therefore, the amplifier still works in a sealed state during field wiring. The transmitter is provided with reverse polarity protection measures to prevent damage to the transmitter due to power connection. The volume change during operation is less than 0.16ml, which can prevent the measured medium liquid column from changing too much. Therefore, it is unnecessary to add a condenser or liquid level cylinder to compensate for the volume change. The parts and components of the transmitter contacting the measured medium shall be made of 316L stainless steel. The use of surface mounted electronic components and plug-in design and manufacture of printed circuit boards makes it easy to maintain with fewer failures and strong versatility, reduces spare parts and maintenance costs.

Basic performance and main functions of the product

1. Measurement parameter type: Either differential pressure, gauge pressure or pressure

2. Measuring range:  Differential pressure: 0-0.05kpa~7mpa (select sensors according to different ranges)

Gauge pressure: 0-0.15kpa~42mpa (select sensors according to different ranges)

Absolute pressure: 0-40kpa~7mpa (select sensors according to different ranges)

3. Temperature range of medium contacting the sensor: -40~85℃

4. Display parameters

Measured pressure value

Output analog current value

Percentage value of the measured pressure corresponding to the set range

Temperature value of the sensor body and its contact medium

5. Output signal

1) 4~20Ma DC pressure parameter analog signal and pressure, temperature digital signal, using HART protocol

2) Full digital signal of pressure, temperature and percentage range, using EPA, FF, or Profibus PA field bus protocol

6. Main configuration functions:

Zero shift, measuring range, workload unit, damping time, over limit alarm, output 4-20Ma current calibration, write data protection, output function, factory data recovery.

Structure and principle

The 3151 transmitter consists of a sensor and an electronic circuit board. The sensor consists of a sensing element, a direct digital capacitor circuit, a temperature sensor, and a characteristic EEPROM; The electronic circuit board is composed of microprocessor, digital/analog signal converter, digital communication and memory EEPROM to complete the conversion of pressure signal to 4-20 mADC.