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LPT-22 Compact High-Temperature Pressure Transmitter
● High-Temperature-Resistant Diffusion-Silicon Core
● Supports full-temperature-range temperature compensation (please specify when ordering)
● Multiple signal outputs
● Equipped with overcurrent and overvoltage protection features
●Anti-pulsation Pressure Shock
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Product Description
Product Overview Product overview
The LPT-22 High-Temperature Pressure Transmitter is a pressure measurement product that integrates pressure sensing, display, and output functions into a single unit. This product features a high-temperature-resistant pressure sensor as its signal-measuring component, with the medium being measured transferred to the sensor via the transmitter's built-in heat-dissipation structure. Equipped with a highly accurate and stable pressure sensor, the device undergoes automated computer-based testing and utilizes advanced manufacturing techniques to achieve zero-point and temperature compensation across a wide operating temperature range. Finally, the signal-processing circuitry converts the sensor signal into a standard output signal. Suitable for industrial sites, food and pharmaceutical equipment, power generation, mechanical licensing, automotive manufacturing and shipbuilding, petrochemicals, metallurgical production, as well as steam and thermal energy exchange applications.
Performance Metrics TECHNICAL PARAMETERS
Power supply: 12–32 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; RS485;
Load capability: Current type ≤ 500Ω, voltage type ≥ 250 kΩ;
Threaded interface: G1/4; M20×1.5 (customizable based on 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: -20～300℃
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 to be measured. For ease of 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 impact, 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 from 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. Since the pressure diaphragm is permanently integrated with the housing, it will become irreparable if damaged. Additionally, product quality issues caused by improper use—such as accidental pressing of the diaphragm, static overloads from particulate-containing media, or dynamic pressure shocks—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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