3051 smart pressure sensor 5
3051 smart pressure sensor 3
3051 smart pressure sensor 11
3051 smart pressure sensor 13
3051 smart pressure sensor 15
3051 smart pressure sensor

3051 pressure sensor smart Capacitive

Model Number:PT-3051
Output signal:4~20mAdc
Product Name:Capacitive high-precision smart pressure transmitter
Pressure type:Gauge Pressure Absolute Pressure Sealed Pressure
Process connection:Flange pressure port 1/4-18NPT, joint pressure port 1/2-14NPT
Measuring medium:liquid, gas or vapor
Material:316 /304 Stainless Steel
Electrical connection:1/2-14NPT conduit with threaded end
Display:LCD Digital Display
Keywords:flange capacitive 3051pressure transmitter

  • Introduction
  • Technical data
  • Electrical connection
  • Dimensions
  • Applications

3051 pressure sensor Capacitive high-precision smart pressure transmitter

The PT3051 series capacitive smart transmitter is a high-precision and miniaturized smart sensor produced using advanced foreign technology. In terms of conversion principle, it uses a direct digital capacitive circuit to replace the analog signal amplification circuit and A/D conversion circuit, and uses digital compensation technology to adjust the temperature. , static pressure is compensated, improving measurement accuracy and reducing temperature drift. It has the characteristics of good long-term stability, high reliability and strong self-diagnosis ability. With its extremely high performance-price ratio, it has become a mainstream product in the transmitter market.

3051 pressure sensor 1

3051 Pressure Sensor Features

The PT3051 series intelligent transmitter is suitable for measuring flow, liquid level and pressure (gauge pressure, differential pressure, absolute pressure) of liquid, gas and steam media. PT3051 series smart transmitters can be divided into seven varieties according to their uses:
PT3051GP pressure transmitter
PT3051DP differential pressure transmitter
PT3051HP high static pressure differential pressure transmitter
PT3051AP absolute pressure transmitter
PT3051LT liquid level transmitter
PT3051GP remote pressure transmitter
PT3051DP remote differential pressure transmitter

The PT3051 series of smart transmitters not only have the proven characteristics of capacitive sensitive components such as stable performance, high reliability and strong overload resistance, but also add advanced digital compensation and communication functions. This makes the PT3051 series smart transmitter a high-precision smart transmitter with a wide range of uses.

The transmitter can complete testing, configuration, calibration and other functions through our company’s HRTMASTER configuration/debugging system, and is also compatible with the ROSEMOUNT275 handheld terminal. Local zero point and span adjustments can be made from the keys in the control room or on the transmitter circuit board through a handheld communicator or debugging equipment.

When performing remote communication, please note: there must be a resistance of no less than 250Ω between the terminal block and the power supply. Before using the HRTMASTER configuration/debugging system to connect to the transmitter, please be sure to read the relevant product manual.

Product advantages

  • Increased flexibility and enhanced functions due to the use of microprocessors;
  • Has strong self-diagnosis ability;
  • Measurement range covers 0-0.2KPa~41.37MPa;
  • The accuracy is better than 0.1 level, and the range ratio is better than 40:1;
  • Zero point and span adjustment do not affect each other;
  • Both remote and local zero point and range adjustment;
  • Two-wire system, compliant with HART® protocol, can carry out digital communication with ROSEMOUNT275 without interrupting analog output;
  • The sensor has non-volatile memory;
  • Good stability, high accuracy, adjustable damping, and strong one-way overload resistance;
  • No mechanical transmission parts, less maintenance work, strong and vibration-resistant;
  • The display head can be freely rotated 330° to facilitate on-site observation;
  • All common parts, sensors and electronic boards are interchangeable without affecting the performance of the transmitter, making maintenance more convenient;
  • The diaphragm material in contact with the medium is optional, and the explosion-proof shell structure is available;
    Proven superior performance and reliability;

If you are not sure what kind of pressure sensor is right for your project.please contact us


Main performance indicators

Usage object: liquid, gas or steam
Measuring range: 0-0.2Kpa~41.37Mpa
Output signal: 4~20mAdc output superimposed with HART® protocol digital signal (two-wire system)
Power supply: external power supply 24V DC, power supply range 12V~45V
Installation in hazardous locations: explosion-proof dIICT5; Intrinsically safe type iaIICT5;
Temperature range: Medium temperature -40~104℃
                                  Storage temperature -40~85℃
                                  The working temperature of the whole machine is -40~85℃ -20~75℃(with digital meter)

Relative humidity: 5~100%
Overpressure limit:
There is no damage to the transmitter when the measuring range is below 6.89MPa and 0 (absolute pressure) ~ 13.8MPa is applied;
The measuring range is 20.68MPa, and the transmitter is not damaged when 0 (absolute pressure) ~ 31.2MPa is applied; the measuring range is 41.37MPa, the transmitter is not damaged when 0 (absolute pressure) is applied to 51.45MPa;
The normal working pressure is from 3.45kPa (absolute pressure) to the upper limit of the transmitter range (AP type can work at absolute zero pressure);
The flange can withstand 68.9Mpa pressure.
Volume change: less than 0.16cm3
Damping: The time constant is adjustable between 0.1~32.0s.
Start-up time: 3s, no preheating required.
Range ratio: 40:1 Accuracy: (range 3, 4, 5, isolation diaphragm is 316 stainless steel, filling fluid is silicone oil, except AP, LT and HP types)
When the range ratio is 1:1~10:1, the accuracy is ±0.1% of the range.
When the range ratio is 10:1~40:1, the accuracy is ±0.05 (1+0.1URL/range)% of the range. (Range 6, 7, 8, 9, 0, isolation diaphragm is 316 stainless steel, filling fluid is silicone oil) and AP, LT and HP types
When the range ratio is 1:1~10:1, the accuracy is ±0.15% of the range.
When the range ratio is 10:1~40:1, the accuracy is ±0.075 (1+0.1URL/range)% of the range.
Temperature influence: Zero point temperature error is ±0.25/55℃ of the maximum range. Stability: ±0.15% of the maximum range/6 months.The total temperature error including zero point and range is ±0.5/55℃ of the maximum range
Power supply influence: less than 0.005%/V of the output range.

3051 smart pressure sensor 313051 smart pressure sensor 293051 smart pressure sensor 273051 smart pressure sensor 25

Precautions for installation in hazardous locations
In order to maintain the explosion-proof function of the installed transmitter, the following matters must be paid attention to (see the explosion-proof instructions for details).
1. The cover must be tightened to ensure at least 6 engagements, and the threads must not be damaged.
2. The connection between the sensor and the electrical housing must be engaged at least 6 times, and the threads must not be damaged.
3. Wiring holes must be sealed with suitable seals.
4. If the other wiring hole on the housing is not in use, it must be plugged with a threaded metal plug, engaging at least 6 buckles.

3051 smart pressure sensor3051 smart pressure sensor 93051 smart pressure sensor 73051 smart pressure sensor 193051 smart pressure sensor 213051 smart pressure sensor 23

PT3051 series intelligent transmitter is suitable for measuring flow, liquid level and pressure (gauge pressure, differential pressure, absolute pressure) of liquid, gas and steam media.

3051 smart pressure sensor 33

If You Need To Order Samples Or Customized Products, Please Contact Us By Phone Or Email. We Will Have Someone Contact You!

We're always interested with in collabration new projects, big or small. Send us an email and we'll get in touch shortly, available or phone betwen 8:00 am and 6:00 pm Monday to Saturday.

product bottom logo 1
product bottom logo 2
product bottom logo 3

    got top Top
    video play
    loading Loading