Differential pressure transmitter / piezoresistive / membrane / HART
SMP858-DST (Remote) Shanghai LEEG Instruments Co.,Ltd.


  • Pressure type:


  • Technology:

    piezoresistive, membrane

  • Output signal:


  • Mounting:


  • Other characteristics:

    with LCD display, remote, silicone oil-filled, explosion-proof, IP67

  • Process temperature:

    Min.: -40 °C (-40 °F)

    Max.: 110 °C (230 °F)

  • Pressure range:

    Min.: 0 Pa (0 psi)

    Max.: 10 bar (145.04 psi)


SMP858 piezoresistive single crystal silicon pressure transmitter is a high performance pressure transmitter with international leading technology meticulously designed by LEEG instrument, using the world's most advanced single crystal silicon pressure sensor technology and patent encapsulation technology.

Main parameters
Pressure types: Differential pressure
Measuring range: 4kPa-1MPa,
Output signal: 4-20mA、4-20mA+HART, others
Reference accuracy: ±0.2% URL, optional ±0.5% URL
Field of application:Pressure, level, differential pressure, density, interface,flow
Diaphragm material: SS316L,Hastelloy C
Stability: ±0.2% URL/5years
Isolation fluid filling:Silicon Oil, process temperature: -45-205℃
Neobee M-20, process temperature: -10-180℃
Sensor Seal: O-ring, FKM
Approvals: CE & Ex-proof
Net weight: about 6.35kg (Tri-Clamp process connection accessory, without mounting brackets)

Power supply
Standard/flame proof 10.5-55VDC
HART protocol 16.5-55VDC,communication load resistance 250Ω
Load resistance 0-2119Ω for operation, 250-600Ω for HART protocol
Transmission distance <1000 meters
Power consumption ≤500mW@24VDC,20.8mA

Environment condition
Working temperature -40-85℃, LCD display unit:-20-70℃
Storage temperature -40-110℃, LCD display unit:-40-85℃
Media temperature With silicone oil -40-120℃,With neobee oil -10-80℃
Working humidity 5-100%RH@40℃
Proction class IP67


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