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LPT-10 Series General-Purpose Pressure Transmitter
● High-quality diffused silicon piezoresistive sensing element
● Multiple signal outputs available
● Supports HART protocol (please specify when ordering)
●Isolated Circuit Design
● Equipped with overcurrent and overvoltage protection features
●Anti-pulsation Pressure Shock
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Product Description
Product Overview Product overview
The LPT-10 series industrial-grade pressure transmitters utilize high-quality diffused silicon sensors to capture pressure signals. These signals—mV-level voltages that precisely correspond to the measured pressure—are then amplified and digitally processed by an intelligent transmitter circuit. The result is a stable, standardized 4–20mA industrial current signal, with support for multiple communication protocols such as HART and MODBUS 485. Each unit in this series undergoes meticulous calibration and rigorous aging tests during production, ensuring consistent performance and reliability. This makes the product ideal for a wide range of industrial applications requiring real-time pressure monitoring and transmission.
Performance Metrics TECHNICAL PARAMETERS
Power supply: 18–32 VDC;
Measurement media: oil, water, gas, and other media compatible with stainless steel;
Measurement ranges: Negative pressure type: -0.1 to 0 MPa; Differential pressure type: 0–2 kPa; Positive pressure type: 0–60 MPa; (Custom options available for higher requirements)
Measurement accuracy: 0.25%FS; (Higher accuracy available upon customization)
Overload Capacity: 2x Full-Scale Pressure:
Output signal: Two-wire 4-20mA; three-wire voltage output: 0-5V, 1-5V, 0-10V;
Communication methods: 4-20mA + HART protocol; RS485;
Load capability: Current type ≤ 500Ω, voltage type ≥ 250 kΩ;
Threaded interface: G1/4; M20×1.5 (customizable based on site requirements);
Electrical interface: M20×1.5 standard cable gland, including a locking nut;
Temperature Drift Coefficient: Within the specified operating temperature range, for every 10°C change in ambient temperature, the output variation is ≤ ±0.05% of the full scale, and the annual drift is < ±0.3%.
Long-term stability: ±0.1%FS/year;
Housing material: Die-cast aluminum, epoxy resin coating, with sealing gasket
Housing Protection: IP65
Explosion-proof rating: Exd IIC T6Gb;
Operating temperature: -20～85°C
Storage temperature: -40～100°C
Relative humidity: 0–95% RH
External dimensions APPEARANCE OF SIZE
Installation Requirements INSTALLATION
1. The pressure transmitter can be directly installed on the pipe component being measured. To facilitate installation and maintenance, it is recommended to install a shut-off valve between the pipe component and the pressure transmitter. In environments with significant vibration or shock, a flexible hose can be connected to the pressure transmitter’s fitting to achieve mechanical decoupling.
2. A sealing ring should be installed between the pressure transmitter connector and the pipe fitting or shut-off valve. For flush-head pressure transmitters, the internal thread depth of the pipe fitting or shut-off valve must exceed 25 mm.
3. In general, the pressure transmitter should be installed vertically facing upward relative to the horizontal plane. During installation, use a wrench to tighten the transmitter by turning the hexagonal nut at its base—avoid directly twisting the upper part of the transmitter.
Note:
1. Do not poke the pressure port with sharp or hard objects, as this may damage the sensor’s pressure diaphragm. Additionally, since the pressure diaphragm is permanently integrated with the housing, it will become irreparable if damaged. Furthermore, product quality issues caused by improper use—such as accidental pressing of the diaphragm, static overloading due to particulate matter in the medium, or dynamic pressure surges—are not covered under our warranty. Therefore, users are strongly advised to take extra care in protecting the diaphragm during both installation and operation.
2. For areas prone to frequent lightning strikes, it is recommended to install lightning protection devices along the lines.
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Tianjin Ling Yu Technology Co., Ltd.
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