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Adjustable Low Pressure Metal Work Digital Pressure Switch

  • NISE-30A
  • NNT

digital pressure switch

Digital Pressure Switch

●NNT pneumatic component. We have the mature craft and the production line, the corrosion resistant and robust design along with a wide range of options makes it ideal for OEM.

●Automatic preset function copy up to 10 units

●Password lock setting, Response time setting, Resolution setting

Model NZSE30A (Vacuum pressure) NZSE30AF (Compound pressure) NISE30A (Positive pressure)
Pressure range
0.0~-101.0kPa -100.0~100.0kPa -0.100~1.000MPa
Setting pressure range 10.0~-105.0kPa -105.0~105.0kPa -0.105~1.050MPa
Withstand pressure 500kPa 500kPa 1.5MPa
Minimum unit setting 0.1kPa 0.1kPa 0.001MPa
Applicable flfluid Air, Non-corrosive gas, Non-flflammable gas
Power supply voltage DC12~24V±10% , Ripple (p-p) 10% or less (with power supply polarity protection)
Current consumption

40mA or less

Switch output NPN or PNP open collector 1 output, NPN or PNP open collector 2 outputs
Maximum load current 80mA
Maximum applied voltage 28 V (at NPN output)
Residual voltage 1 V or less (with load current of 80 mA)
Response time 2.5 ms or less (with anti-chattering function: 20, 100, 500, 1000, 2000 ms)
Short circuit protection Yes


Hysteresis Hysteresis mode   Variable (0 or above)
Window comparator mode
Voltage output Output voltage  (Rated pressure range)


Linearity ±1%F.S.
Output impedance Approx. 1 kΩ
Current output Output voltage  (Rated pressure range) 4~20mA±2.5%F.S. 2.4~20mA±2.5%F.S.
Linearity ±1%F.S.
Load impedance Maximum load impedance: Power supply voltage 12 V: 300 Ω, Power supply voltage 24 V: 600 Ω Minimum load impedance: 50 Ω
4-digit, 7-segment, 2-color LCD (Red/Green)
Display accuracy ±2% F.S. ±1 digit (Ambient temperature of 25 ±3°C)
Indicator light Lights up when switch output is turned ON. OUT1: Green, OUT2: Red
Environment Enclosure IP40
Operating temperature range Operating: 0 to 50°C, Stored: –10 to 60°C (No freezing or condensation)
Operating humidity range Operating/Stored: 35 to 85% RH (No condensation)
Withstand voltage AC1000V for 1 minute between terminals and housing
Insulation resistance 50 MΩ or more (DC500V measured via megohmmeter) between terminals and housing
Temperature characteristics ±2%F.S. (25°C reference)
Lead wire with connector Oilproof heavy-duty vinyl cable, 3 cores ø3.5, 2 m 4 cores Conductor area: 0.15 mm2 (AWG26), Insulator O.D.: 1.0 mm

Digital Pressure Switch Core Part

digital pressure switch

Flame retardant shellFlame retardant shell 

The shell is made of flame retardant material, with corrosion resistance

pressure sensor

Pressure Sensor

Reaction: 0.36 s

Sensitivity: 0.2 F.S. or less

Strong stability, consistent pressure at different temperature

The circuit board has passed the EMC test and has strong anti-interference, more pressure sensitive

Delicate bolt

Delicate bolt

For air pressure input, with good sealing, to ensure that the air pressure does not leak

Order Model Tpye

How to order



The two gas circuits are respectively connected with positive pressure regulating valve and negative pressure regulating valve from the outside. We can change the air pressure input into the air circuit through the pressure regulating valve. We can observe the current input air pressure by using high-precision digital pressure gauge, so as to accurately obtain the required pressure for the test.

The solenoid valve added in the air circuit can control whether the air circuit is ventilated, and can simplify some of our operation. The two solenoid valves are connected with an mts-103 button switch, the common end of the button switch is connected with the power supply, and the NNT solenoid valve is connected with the electric source respectively by turning the button switch in different directions to realize the selection of positive and negative pressure gas circuits.

Our Advantage



Production line

Production Line







Contact Us

Contact Us

About us

NNT is devoted to provide high quality industrial pneumatic control components to the domestic and international customers. We've been focusing on products innovation, R&D(research and development) and quality control, which also enables NNT in the peer enjoy a good reputation.

This is Jacob. Contact me for product details and attractive price.

Whatsapp: +86 17702626719

Wechat: 17702626719

Email: jacob@nntqd.com      

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