100MΩ Piezoresistive Differential Pressure Transmitter

Place of Origin China
Brand Name Sier
Certification CE,RoHS
Model Number SPT90
Minimum Order Quantity 1
Price USD50~70/Piece
Packaging Details Carton
Delivery Time 7
Payment Terms T/T, Western Union
Supply Ability 5000 pieces each month
Product Details
Housing Stainless Steel 304 Diaphragm Stainless Steel 316L
O-ring Viton Filled Liquid Silicon Oil
Pressure Port G1/4 Female Storage Temp. -40~120
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100MΩ Piezoresistive Differential Pressure Transmitter


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Product Description

100MΩ Piezoresistive Differential Pressure Transmitter 0

 Differential Pressure Transmitter

Features100MΩ Piezoresistive Differential Pressure Transmitter 1

·Full stainless steel construction, compact size, easy installation;

·Using piezoresistive differential pressure sensor, 316L isolated diaphragm;

·Temperature compensation and aging, stable performance;

·Zero and span adjustable outside;



SPT90 uses piezoresistive differential pressure sensor as sensing element. Silicon oil is filled in between die and two diaphragms, when measured differential pressure is added on two diaphragm, the pressure could be transferred onto die through silicon oil. Sensor die connects with amplifier circuit through wires, using semi-conductor’s piezoresistive effect, transforming differential pressure signal into electric signal. The whole product is used for differential pressure measurement of petroleum, chemi-industry, power station and hydrology, etc.



  Min. Typ. Max. Unit
    0.5 0.5 %FS
  0.5 0.5
Zero Thermal error 0~100kPa   0.75 1.25 ±%FS, @25℃
200~3500kPa   0.5 0.75
FS Thermal error 0~100kPa   0.75 1.25
200~3500kPa   0.5 0.75
Stability ≤200kPa 0.5 %FS/year
≤3500kPa 0.2
Static pressure effect 0.05 ±%FS, each 100kPa
Compensation temp. 0~50
Operation temp. -10~80
Storage temp. -40~120


Electric Characteristic

Power supply 2-wire 15~28VDC 3-wire 15~28VDC
Output signal 2-wire 4~20mADC 3-wire 0/1~5VDC,0~10/20mADC
Electric connection plug connection or Φ7.2mm 7-pin cable
Response time(10%~90%) ≤1ms
Insulation resistor 100MΩ,50VDC


Construction Material

Housing stainless steel 1Cr18Ni9Ti
Diaphragm stainless steel 316L
O-ring Viton
Filled liquid silicon oil
Pressure port G1/4 female


Environment Condition


Shock effect ≤1% at 3gRMS, 30~2000Hz
Impact ≤1% at 100g, 10ms
Lifetime 1×108 pressure cycles
Media liquid or gas which is compatible with construction material



100MΩ Piezoresistive Differential Pressure Transmitter 2

Order Guide

100MΩ Piezoresistive Differential Pressure Transmitter 3

Order Note


1. We suggest to install tri-valve between the measured point and transmitter to protect the media adding on transmitter’s positive and negative cavities slowly;

2. We suggest to make two pressure ports horizontally to reduce installation direction effect;

3. Please pay attention that the static pressure should be less than 20Mpa, transmitter positive and negative cavity should be in the rating pressure range;

4. If the user has special requirement, please feel free to contact our company.

100MΩ Piezoresistive Differential Pressure Transmitter 4