Relative pressure transmitter LFT3100

absolutepiezoresistive4-20 mA

Product Overview
The LFT3100 integrated temperature and pressure transmitter combines an advanced piezoresistive pressure sensor with a PT-100 temperature probe and converts signals to standard outputs via a dedicated signal conditioning circuit. It features digital temperature compensation, a wide operating temperature range and multiple output options. Suitable for pressure and temperature monitoring in food processing and water treatment systems.

Features

• Oil-filled diffusion silicon sensing core for high precision and high overload capacity.
• Dual outputs for temperature and pressure in a compact housing to save installation space.
• Supports Modbus-485 communication (intelligent version).
• Temperature and pressure sensing elements packaged together for measurement closer to the medium temperature.

Specification (table)
Measurement range: 0 ~ 10 kPa .. 70 MPa
Temperature range (PT-100): -20 ~ 100 °C
Overload pressure: 1.5 × rated pressure
Accuracy: Pressure ±0.5% F.S; Temperature ±2% F.S
Stability: <0.5% F.S/year
Working temperature: -20 ~ 85 °C
Storage temperature: -40 ~ 100 °C
Measured medium: Gas or liquid compatible with 304/316L stainless steel, FKM (fluorine rubber) or NBR (nitrile rubber)
Electrical options: 2-wire / 3-wire / 4-wire
Output signals: 4–20 mA / 0.5–4.5 V / RS-485 (Modbus for intelligent type)
Power supply: 10–30 VDC / 4.75–5.25 VDC / 10–30 VDC
Electrical connections: DIN43650A (Big Hirschmann), M12 waterproof, GX12 aviation connector (3/4-core), M12 4-core aviation connector
Enclosure protection: IP54, IP65
Pressure connections: G1/4, M12×1, M10×1, NPT1/4, G1/2, M20×1.5, etc.
Pressure type: Gauge (G) / Absolute (A)
Certifications: Explosion-proof type E, RoHS, CE

Technical specifications

• Model: LFT3100
• Measurement range: 0 ~ 10 kPa .. 70 MPa (depending on variant)
• Temperature sensing: PT-100, range -20 ~ 100 °C
• Overload capacity: 1.5× rated pressure
• Pressure accuracy: ±0.5% F.S (combined linearity, repeatability, hysteresis at 25 °C)
• Temperature accuracy: ±2% F.S
• Stability: <0.5% F.S/year
• Operating temperature: -20 ~ 85 °C
• Storage temperature: -40 ~ 100 °C
• Compatible media: Gases or liquids compatible with 304/316L stainless steel, FKM or NBR
• Electrical configurations: 2-wire / 3-wire / 4-wire
• Available outputs: 4–20 mA, 0.5–4.5 V, RS-485 (Modbus for intelligent type)
• Power supply options: 10–30 VDC (2-/4-wire), 4.75–5.25 VDC (3-wire voltage output)
• Electrical connectors: DIN43650A, M12 waterproof, GX12, M12 4-core aviation
• Ingress protection: IP54 or IP65
• Pressure ports: G1/4, M12×1, M10×1, NPT1/4, G1/2, M20×1.5, etc.
• Pressure forms: Gauge (G) or Absolute (A)
• Certificates: Ex-proof type E, RoHS, CE