• High cost-effective solution
  • Higher accuracy and longer life
  • Solid structure design,no moving parts
  • Ideal solution to replace mechanical type pressure gauges
  • Min pressure range can be made to 0-100Pa
  • standard 2-wire 4-20mA output, 0-5V,1-5V and 0-10V optional
  • RS485 optional, 2 groups of switches optional(part of models)
  • Digital display(LCD or LED) and no display otpional
  • Battery power optional(part of models)
  • Can measure regular pressure,micro pressure,differential pressure,negative pressure

The air pressure sensor switch is developed on the first class ICs with features of high sensitivity, high accuracy and strong over-loading. It has a high integration of sensor and amplifier wiring circuit.  There is no need to adjust zero point of circuit. It has strong anti-interference and long-term stability.

(Explosion-proof Available)

Function Features:

  • Good stability,full scale,zero position can reach 1%FS/year. With temperature compensation range of 0-70℃, its temperature shift is below 1%FS. In the whole allowing temperature range, the shift value is smaller than 0.5%FS.
  • Wiring circuit has feature of reverse protection and current limiting protection
  • Solid state design,no moving parts, high reliability and long life
  • Accurate measurement from wind pressure to steam,not influenced by mass size of tested fluid
  • Simple structure,simple to install and economic to use

Technical Specification:

  • Pressure range:0-100Pa to 0-10000KPa
  • Max over-load: 3 times over standard measuring range(usually refer to max pressure of one end)
  • Pressure value:manometer pressure and micro differential pressure, negative pressure optional.
  • Accuracy class: ±1%F.S. ±0.5%F.S. and ±0.2%F.S. available
  • Power supply: 24VDC (12-36Vdc)
  • Measured fluid:Gas pressure or steam pressure
  • Over-load resistor:<=500 ohm
  • Analog output: 4-20mA(2-wire),3-wire 0-5V/1-5V/0-10V. Default is 4-20mA
  • Temperature compensation range:0-70℃
  • Display or not display optional
  • Enclosure: ABS or Metal. Default is ABS.

Economic Type Digital Differential Pressure Gauge

The digital differential pressure gauge is developed from high accuracy MEMS sensing technology and digital processing circuit. It can measure positive pressure,negative pressure and differential pressure. It can completely replace mechanical dial pressure gauge. It can be used to test pressure and differential pressure of fan and air blower,filter resistance, wind velocity, boiler ventilating, medical,orifice plate,etc.

The differential pressure gauge has no moving parts,so it features good performance,longer time,etc,its accuracy can reach ±1%FS. Digital display LCD/LED screen make value easy to read.Ultra-small design also make it installed on wall or embedded way. Local keys support setting functions of zero point calibration, unit changing, refreshing display time setup,auto sleep time setup,etc.

Measured fluids:Non flammable / non corrosive gas. No sensitive to dust,dew and oil pollution.

Technical Specification:

  • Fluid temperature range:0-60°C
  • Temperature compensation range: 0-50°C
  • Accuracy:±1.0%FS
  • Long-term stability: ±0.5%FS/year
  • Working pressure: Overload:10xFS; Damaging pressue:15xFS
  • Temp.shift:<0.05%FS/°C(zero point);<0.08%FS/°C(full scale);
  • Keypad:3 tactile keys
  • Display: 4 digits LCD with pressure unit display. If require LED, it will require external power supply.
  • Working temp.: LED:-20 to 85°C; LCD:-10 to 60°C
  • Protection class: IP65
  • Net Weight:280g
  • Enclosure material:PC
  • External power supply: 24VDC/AC or 110-250AC vailable.
  • Battery power: 4xAA,recommend LR6
  • While battery power:  Display refreshing time: can set 0.5/1/5/10s.(Default 1s). Auto sleep time: can set ON or 1/5/10min(Default:1min).
  • Battery using life: display refreshing time(1s)/Auto sleeping=ON  Set>=2years, display refreshing time>1s or set auto sleep time,longer using life.  Battery life is also decided by battery quality.