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Home> pressure meter >> pressure transmitter >> QBC-31 Pneumatic Differential Pressure Transmitter
  • Product number:MC-000021003558
  • Product name:Pneumatic Differential Pressure Transmitter
  • Product Type:QBC-31
  • Product nameplate:SAIC
  • Project Category:pressure meter >> pressure transmitter >>
  • Manufacturer:Shanghai Automation Instrumentation Co., Ltd.
  • Sales unit: Shanghai Automation Instrumentation Marketing Center
  • Information download:Click to enter the download page  
  • Introduction
  • Specifications
Pneumatic differential pressure transmitter is a unit of DDZ-II pneumatic unit combination instruments. It is used to continuously measure level, interface, gravity etc. it also can measure flow of liquid, vapor or gas if completed with throttling device and convert the parameter into standard air pressure signal which transmitted to regulator and pneumatic indicator.
Features
Differential pressure transmitter can work in explosive situations.
Simple structure, the transmitter are attached with QDY-200-type valve.
Single lever balance structure
Double diaphragm membrane structure with high sensitivity and filled with silicon oil.
Metal diaphragm amplifier, less parts and more flow.
Output pressure：20～100kPa
Measured media temperature：-20℃～120℃
Ambient temperature：-10℃～55℃
RH：10～95%
Allowable vibration：
Amplitude: 0.35mm 
Frequency: 20Hz
Material of accessory：
Sealing film：High-elastic alloys 3J21
Sealing ring：Viton or NBR rubber
Positive, negative pressure chamber base：Chrome-plated carbon steel and acid resistant steel 1Cr18Ni9Ti or cast aluminum
Conversion parts of bellows：Phosphor Bronze
Model
name
model
range
Working pressure
Static
Error
Single maximum pressure
Maximum
Migration
accuracy
Measure element
weight
（kg）
type
Material
Micro differential
pressure
QBC-11
100，160，250，400，600Pa
50kPa
±1%
 
range±100%，
±1.5%
Diaphragm
涤纶
12.5
Low differential
pressure
QBC-21
2.5
4.0
6.0kPa
MPa
±1%
2.5
±1%
Diaphragm
box
3J1
16.5
2.5
Medium
differential
pressure
QBC-31
10
16
25
40kPa
2.5
±1%
2.5
±1%
Diaphragm
box
3J1
12
QBC-32
6.4
±1.5%
6.4
QBC-33
16
±2.5%
16
QBC-34
32
±3.5%
32
High
differential
pressure
QBC-41
60
100
160
200kPa
2.5
±1%
2.5
±1%
Diaphragm
box
3J1
12
QBC-42
6.4
±1.5%
6.4
QBC-43
16
±2.5%
16
QBC-44
32
±3.5
32
large differential
pressure
QBC-51
250
400
600
1000
1600kPa
32
±3.5%
32
±1.5%
Diaphragm
box
3J1
10
0.9～2.5MPa
 

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