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LPT-23 Compact Hygienic Pressure Transmitter
● Seamless Membrane Pressure Sensing with No Dead Corners
● Liquid-contact materials can be customized for corrosion resistance
● Core and Circuit Dual Compensation
● The process interface is versatile, and both flanges and threads can be customized.
● Suitable for level measurement in open containers
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Product Description
Product Overview Product overview
The LPT-23 Series Hygienic Pressure Transmitter is a rod-shaped pressure transmitter. Unlike conventional pressure transmitters, it features a flat-diaphragm sensing element, ensuring hygienic design with no dead corners for easy purging and cleaning. Additionally, when used in corrosive media environments, it can accommodate various corrosion-resistant diaphragms to effectively handle corrosion challenges. Its compact size makes it ideal for on-device integration and allows for dense installation. Internally, the device employs a soft, solid-sealing adhesive, enhancing its vibration resistance. The product supports the MODBUS protocol, providing a dedicated interface for future development and enabling seamless integration with complementary equipment—thus helping to expand functionality and optimize system performance. It is perfectly suited for industries such as food, pharmaceuticals, healthcare, and brewing.
Performance Metrics TECHNICAL PARAMETERS
Power supply: 12–32 VDC;
Measurement media: oil, water, gas;
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 request)
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; RS485;
Load capability: Current type ≤500Ω, voltage type ≥250kΩ;
Threaded interface: M20×1.5 / G1/2" / Clamp connection / Flange connection (customizable according to site requirements);
Electrical Interface: Hirschmann waterproof cable glands with locking nut; M12 aviation connector
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; annual drift < ±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
Materials are being prepared...
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 bottom, avoiding direct twisting of 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, the device 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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