Direct Mount Pressure Transmitter SLDP3351-AP
The direct mount pressure transmitter is used to measure the liquid level, density, and pressure of liquid, gas or steam, and then convert it into a 4-20mA HART current signal output.
- Product Introduction
Solidat Applied Technologies Ltd. is one of the leading manufacturers and suppliers of direct mount pressure transmitter sldp3351-ap in China, also supports customized service. Please feel free to buy high quality products in stock here and get quotation from our factory. Good service and reasonable price are available.
The direct mount pressure transmitter is used to measure the liquid level, density, and pressure of liquid, gas or steam, and then convert it into a 4-20mA HART current signal output. It can also be communicated with a handheld communicator, and parameter setting and process control can be performed through them .
working principle
The direct mount diaphragm seal pressure transmitter module adopts all-welding technology, and has an integral overload diaphragm, a pressure sensor and a temperature sensor inside. The temperature sensor serves as a reference value for temperature compensation. The positive pressure side of the pressure sensor is connected to the high pressure chamber of the sensor bellows, and the negative pressure side of the sensor is connected to the low pressure chamber of the sensor bellows. The pressure is transmitted to the silicon chip in the sensor through the isolation diaphragm and filling liquid, so that the pressure sensor The resistance value of the chip changes, which causes the output voltage of the detection system to change. The output voltage is proportional to the pressure change, and then converted into a standardized signal output by the adaptation unit and the amplifier.
Advantages of high precision single crystal silicon pressure/differential pressure transmitter:
Monocrystalline silicon technology pressure sensor
Double diaphragm overload protection structure
Integrated circuit and signal transmission module of surface packaging technology
The housing can be swiveled up to 380° for optimum readability of the on-site display unit
Isolated magnetic induction three-button parameter setting outside the shell
Transient Voltage Protection Terminals
Specification parameters of direct mount pressure transmitter:
Communication line conditions:
Line length: up to 2km (0.75~1.25mm2 control instrument cable, use twisted pair cable when it exceeds 1km)
Load resistance: 250~600Ω (DC 24V, including cable resistance)
Load capacitance: below 0.55mF
Load inductance: below 3.3mH
Spacing between power lines: more than 15cm (please avoid parallel wiring)
Saturation current: upper limit: 20.8mA lower limit: 3.8mA
Alarm current: upper limit: 22.8mA lower limit: 3.6mA (mode can be set)
Adjustment function: Zero point and full scale point can be adjusted locally through the three buttons on the top of the shell or remotely adjusted by configuration software
Zero shift: can shift within the range of -20%~+20% of the maximum range
Ambient temperature: -40~+85°C (when filled with fluorine oil: -10~+60°C)
Storage temperature: -40~+90℃
EMC applicable standard: ENC61326-1: 2006
Static pressure influence: ±0.1% of range /10MPa
Overpressure effect: ±0.2% range upper limit /10MPa
Annual stability: ±0.1% of the upper limit of the range
Power supply influence: ±0.005% /1V
Influence of installation position: The change of installation position in the direction parallel to the diaphragm surface will not cause the influence of zero drift. If the change between the installation position and the diaphragm surface exceeds 90°, the zero drift within 0.4kPa range can be corrected by zero adjustment
Response time: 100ms
Damping: Time constant adjustable from 0 to 99.9 seconds
Filter constant: adjustable within 0~160uA
Self-stabilization coefficient: adjustable within 0~2%
Wetted part material: SUS316L stainless steel
Wetted sealing ring: Viton, rubber
Transmitter Housing: Low Copper Aluminum Die Casting + Polyurethane Painting
Transmitter Housing Cover: Aluminum Die Casting + Polyurethane Painting
Sealing grade: IP67
Installation method: pressure transmitter direct mount on the pipe or directly on the wall and dashboard
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