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4-20mA HART Output Monocrystalline Silicon Differential Pressure Transmitter with ±0.05% FS Accuracy for Industrial Process Measurement
4-20mA HART Output Monocrystalline Silicon Differential Pressure Transmitter with ±0.05% FS Accuracy for Industrial Process Measurement
Measuring Range:
1 KPa To 3 MPa
Accuracy:
±0.05% FS / ±0.075% FS / ±0.1% FS
Output Signal:
4-20 MA DC With HART
Overload Pressure:
16 MPa / 25 MPa / 40 MPa
Process Temperature:
-40 To +125 °C
Protection Class:
IP65, IP67
Highlight:
4-20mA HART Output DP Transmitter
,Monocrystalline Silicon Differential Pressure Transmitter
,±0.05% FS Accuracy Differential Pressure Transmitter
Product Description
LF3051-DP Monocrystalline Silicon Differential Pressure Transmitter
The LF3051-DP single-crystal silicon differential pressure transmitter uses a monosilicon sensor chip fabricated with advanced MEMS technology. Its measuring diaphragm, together with dual overload-protection diaphragms and a precision manufacturing process, delivers high accuracy and exceptional stability. An embedded intelligent signal-processing module performs static-pressure and temperature compensation, ensuring reliable measurement and excellent long-term stability under wide variations in static pressure and temperature.
The LF3051-DP is designed to measure the level, density and pressure of liquids, gases and steam, and converts the measured value into a two-wire 4–20 mA DC output with superimposed HART communication. In addition to HART, PROFIBUS PA, RS-485 (Modbus RTU) and FOUNDATION Fieldbus (FF) are supported.
Applications
- Process Automation
- Oil & Gas
- Chemical & Petrochemical
Key Benefits
- Patented, fully sealed and fully isolated monosilicon sensor.
- Dual-diaphragm overload protection withstands high overload conditions.
- ASIC-based signal conditioning module with SMT assembly.
- User-friendly push-button operation, with fast display of measured values.
- Multi-point temperature and linearity compensation improves accuracy.
- High-strength metal housing ensures long service life.
- Robust stainless-steel process flange.
- High static pressure and overpressure resistance.
Technical Specifications
| General | |||||||||||||||||||
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| Model | LF3051-DP | ||||||||||||||||||
| Product Type | High-accuracy differential pressure transmitter | ||||||||||||||||||
| Measured Medium | Pressure of liquids, gases or steam | ||||||||||||||||||
| Measurement Type | Differential pressure measurement, absolute pressure measurement | ||||||||||||||||||
| Output Signal | 4-20 mA DC with superimposed HART digital signal; RS-485 serial signal; FOUNDATION Fieldbus (FF) |
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| Measuring Range & Single-Sided Overload | |||||||||||||||||||
| Range Code & Span |
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| Accuracy & Stability | |||||||||||||||||||
| Reference Accuracy | Including linearity from zero, hysteresis and repeatability: ±0.05% / ±0.075% / ±0.1% |
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| Accuracy at TD > 10 | TD = maximum span ÷ adjusted span: ±(0.005 × TD)% / ±(0.0075 × TD)% / ±(0.01 × TD)% |
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| Accuracy at TD > 6 (Range Code 0B only) |
— / ±(0.125 × TD)% / ±(0.166 × TD)% | ||||||||||||||||||
| Ambient Temperature Effect | Total effect at -25 to +65 °C: ±(0.15 × TD + 0.05)% × Span Total effect at -40 to -25 °C and +65 to +85 °C: ±(0.2 × TD + 0.05)% × Span |
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| Overpressure Effect | ±0.1% × Span | ||||||||||||||||||
| Static Pressure Effect | ±(0.05% URL + 0.075% Span) per 10 MPa | ||||||||||||||||||
| Long-term Stability | ±0.1% URL / 3 years | ||||||||||||||||||
| Power Supply Effect | ±0.001% per 10 V (12-36 VDC) — negligible | ||||||||||||||||||
| Span Limits | Span adjustable freely within the upper and lower range limits. For optimal performance, select the range code with the lowest possible turndown ratio (TD). |
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| Zero Adjustment | Calibrated span ≥ minimum span | ||||||||||||||||||
| Mounting Position Effect | A change in mounting position parallel to the diaphragm plane causes no zero shift. If the mounting position is not parallel to the diaphragm plane, the effect can be eliminated by calibration. No effect on span. | ||||||||||||||||||
| Alarm & Electrical | |||||||||||||||||||
| Alarm Current | Low alarm: 3.6 mA / High alarm: 21 mA | ||||||||||||||||||
| Insulation Resistance | > 100 MΩ to earth (at 500 VDC) | ||||||||||||||||||
| Dielectric Strength | 500 VAC, 50/60 Hz, 1 minute, to earth | ||||||||||||||||||
| Response Time | Amplifier damping constant: 0.1 s. Sensor time constant: 0.1-1.6 s, depending on span and turndown ratio. Additional adjustable time constant: 0.1-60 s. The effect on non-linear output (e.g. square root function) depends on that function and can be calculated accordingly. | ||||||||||||||||||
| Power Supply | 24 V DC | ||||||||||||||||||
| Electrical Connection | M20 × 1.5 or NPT 1/2 female thread; M20 × 1.5 nylon cable gland supplied as standard; terminals suitable for 0.5-2.5 mm² conductors | ||||||||||||||||||
| Protection Class | IP65, IP67 (explosion-proof version) | ||||||||||||||||||
| Environmental | |||||||||||||||||||
| Ambient Temperature | -40 to +85 °C; with display: -20 to +65 °C | ||||||||||||||||||
| Process Temperature | -40 to +125 °C | ||||||||||||||||||
| Storage Temperature | -40 to +85 °C; with display: -20 to +65 °C | ||||||||||||||||||
| Working Pressure (silicone oil) | 16 MPa / 25 MPa / 40 MPa (three options) | ||||||||||||||||||
| Static Pressure Limit | From 3.5 kPa absolute up to the rated pressure. Proof pressure up to 1.5 times the rated pressure, applied simultaneously to both sides of the transmitter. | ||||||||||||||||||
| Electromagnetic Compatibility | In accordance with the EMC schedule (refer to the EMC compliance table) | ||||||||||||||||||
| Materials & Mechanical Construction | |||||||||||||||||||
| Isolating Diaphragm | Stainless steel 316L; Hastelloy C-276; tantalum; gold-plated | ||||||||||||||||||
| Process Connection Material | Stainless steel 304 or 316 (optional) | ||||||||||||||||||
| Nuts and Bolts | Stainless steel (A2-70); zinc-plated carbon steel (12.8) | ||||||||||||||||||
| Transmitter Housing | Aluminium alloy with epoxy resin coating (painted finish) | ||||||||||||||||||
| Sealing Rings | NBR; FKM (fluororubber); PTFE | ||||||||||||||||||
| Fill Fluid | Silicone oil; edible oil; FL oil | ||||||||||||||||||
| Weight | 2.6 kg (without mounting bracket and process connection fittings) | ||||||||||||||||||
URL = upper range limit · Span = adjusted span · TD = turndown ratio (maximum span ÷ adjusted span)
Dimensions
Oval-Type Adapter — 1/4" NPT × 1/2" NPT Female
Tee Adapter, 1/4" NPT Male × M20 × 1.5 Male
Tee Adapter, 1/4" NPT Male / 1/2" NPT Male (optional)
Process Connection
Standard thread:
1/4" NPT female 1,Adapter, 1/4" NPT male to M20 × 1.5 male
2,Union nut, M20 × 1.5 female
3,Sealing washer, PTFE
4,Impulse pipe, Ø14 mm
Electrical Connection
Dimensional Drawing
Installation Drawing
Flat Mounting Bracket
Right-Angle Mounting Bracket
Detail Information
| Brand Name: | Puride |
| Model Number: | LF3051-DP |
| MOQ: | 1piece |
| Price: | Price on request |
| Payment Terms: | L/C,T/T |
| Supply Ability: | 5,000 sets / month |
