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Pressure Transmitter

Pressure Transmitter

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Model 175 Differential Pressure Transmitter

Differential pressure sensor/transmitter
Pressure medium: air or other non-conductive gas
Accuracy: ±1.0%,±0.4%,±0.25%
Range: unidirectional: 25 Pa to 25000 Pa/bidirectional: ±10 Pa to ±10000 Pa
Signal output: 4-20mA, 0-5Vdc, 0-10Vdc
Overload: Forward and reverse 15PSL (100KPa)


The core component of the Model 175 series differential pressure sensor/transmitter is a capacitive pressure sensor, which consists of a stainless steel diaphragm with a fixed electrode forming a capacitor whose value varies with pressure. Using the company's special patented technology carefully designed sensor sensors and unique detection circuit to ensure good temperature performance and long-term stability of the product.

The Model 175 differential pressure sensor/transmitter can be used to measure differential or gauge pressure with outputs of 0-5V, 0-10V, 4-20mA, and can also be customized for other outputs. The accuracy of Model 175 was ±1.0%FS, 0.4%FS or 0.25%FS at room temperature. The temperature compensation ranges from 4 ℃ to 77℃, and the temperature effect is less than ±0.05%FS/℃.

Model 175 has excellent performance-price ratio, widely used in HVAC, environmental pollution control, clean engineering, medical instruments and equipment, oven pressurization and furnace pressure control, natural gas, gas pipe network monitoring, underground ventilation and power plant wind pressure monitoring and other fields.


LED pressure status display

One key reset button

Removable European junction box

True zero output of voltage

The positive/negative pressure end can withstand at least 100kPa overload without damage

Full protection of misconnection

Environmental protection design, in line with ROHS standards

Minimum pressure range of 10Pa


ParameterStandardSpecial selectionSpecial selection
Accuracy RSS*(under constant temperature)±1.0%FS±0.40%FS±0.25%FS

nonlinearity(best fitting line)

Temperature effect
Zero point/Full range offset(/℃)±0.05%FS±0.03%FS±0.02%FS
Compensation range4℃ to 77℃
Maximum static pressure15PSI(100kPa) 
OverloadBoth positive and negative are 15PSI(100kPa)
Stability ratio±0.5% FS/YR
Preheat5 seconds to reach the performance specification
Installation position effectWhen factory calibration, the sensor is placed vertically. In order to ensure accuracy, necessary fine tuning should be made when installing other positions at zero point

Environmental and mechanical parameters
Operating temperature-18℃ to 77℃
Storage temperature-40℃ to 85℃

       LED Indication

None: The power supply is not connected

Green: works properly

Red: Overvoltage, or during zero calibration

Blinking green/red: Damaged, unable to complete zero calibration

Electrical connectionDetachable European junction panel, 14-26 AWG
Pressure connection3/16"、φ8 brass tower pressure connection(optional)
Output regulation
Press the zero button to clear zero and fine-tune the full range through the potentiometer
Pressure mediumAir or other non-conductive gas
ShellStainless steel/PC+ABSalloy,94V-0
InstallationRefer to the product specification for outline dimensions as shown in Figure 1

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SENBA Sensing Technology Co.,Ltd.(stock code:300701), was founded in 2005, with the focus on producing the top quality photoelectric components, such as PIR sensors, Photoresistors,Light Sensors, Flame detectors etc. Our strategic goal is to master the core technology.