Hydrostatic level transmitter / differential pressure / for liquids / for water
SMP858-DST (Plug-in) Shanghai LEEG Instruments Co.,Ltd.


  • Technology:

    hydrostatic, differential pressure

  • Medium:

    for liquids, for water, for corrosive liquids, for high-viscosity liquids

  • Applications:

    for industrial applications, for corrosive environments

  • Other characteristics:

    with digital display, 4-20 mA, temperature-compensated

  • Protection level:

    explosion-proof, intrinsically safe, chemical-resistant, IP67, corrosion-resistant, for harsh environments

  • Process pressure:

    Min.: 10000 Pa (1.45 psi)

    Max.: 1000000 Pa (145.04 psi)

  • Process temperature:

    Min.: -40 °C (-40 °F)

    Max.: 120 °C (248 °F)


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. Single crystal silicon pressure sensor locates on the top of the metal body and stay away from the medium interface to realizes mechanical isolation and thermal isolation. Glass sintering sensor wire realizes high strength electrical insulation of metal base and improves the capability of flexibility of electronic circuit and transient voltage resistance protection. All these original encapsulation technologies enable DMP305X to easily cope with extreme chemical occasion and mechanical load, and own strong resistance to EMI, sufficient to respond to the most rigorous industrial environment applications, which are the genuine invisible instruments.

Main parameters
Pressure types: Differential pressure
Measuring range: 10kPa-1MPa,
Output signal: 4-20mA、4-20mA+HART, others
Reference accuracy: ±0.1% URL, optional ±0.075% URL
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: Flame proof certificate, ExdIICT6, NEPSI,Intrinsic safety certificate, ExiaIICT4, NEPSI,CE certificate

Field:Pressure, level, differential pressure, density, interface,flow
Application:process control, chemical industry


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