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Compound Range Pressure Transmitters

Compound range pressure transmitters for measuring plus and minus pressures using the same device. Compound range transmittters are calibrated with the most negative reading at 4mA and the most positive reading at 20 mA.

Since the same sensing diaphragm is used to measure both the negative and the positive pressure, there is a limit to how great the ratio between positive and negative pressure can be, before the lower range of the two becomes too inaccurate. In the case of a -1 to 10 bar (-15 to +300 psi range which is accurate to 0.25%, will be accurate to only 2.5% over the vacuum range.

Gauge reference pressure transmitters can be configured to measure from -1bar (-15psi) which is approximately zero vacuum up to a positive pressure such +2 bar (+60psi). For ranges below 1 bar (15psi) the compounds range is typically bidirectionally symmetric such as -500 to +500 mbar, but it is also possible to provide ranges such as -200 to +500 mbar if required.

  • DS200P Sanitary Low Range Pressure Gauge, Switch and Sensor - All in one electronic switch, gauge and sensor designed specifically for use in the food, drink and biomedical industry for measuring process pressures.
  • DMP331 Precision Pressure Transmitter - Stainless steel pressure transmitter with ranges from 100mbar up to 40 bar gauge or absolute. Special options for ATEX , SIL2 and compound ranges.
  • LEO3 Current or Digital Output Pressure Gauge - LCD digital pressure gauge powered externally by a 2 wire series 4-20mA current loop or a digital interface.
  • XMPi Process Plant Gauge and Absolute Pressure Transmitter - Process transmitter for measuring vacuum, steam, food, pharmaceutical, oil, gas and other pressure readings necessary for the monitoring and control of bulk production processes.
  • TK Industrial Pressure Transmitter - General purpose industrial pressure transmitter with a 4-20mA current loop or amplified voltage output available in range from -1 to +1 barg up to 500 barg
  • DS200 Combined Pressure Switch, Gauge and Sensor - Three in one electronic pressure switch, digital pressure gauge and pressure sensor with pressure ranges from 100 mbar up to 600 bar (1.5 to 9000 psi).
  • x|act i Rangeable Flush Pressure Transmitter with LCD Readout - Rangeable Pressure Transmitter with a hygienic all stainless steel construction with LCD digital readout display and optional HART communications.
  • Hastelloy diaphragm -100 to 50 kPa g range manometer
  • Compound +/-200 mb g pressure transmitter with 1/2 BSPT
  • Marine and IS approved, -1 to 3 mWG compound range pressure transmitter
  • -10…30 kPa g compound range inert gas pressure transmitter for ship IG system
  • -1 to 10 bar ATEX pressure sensor
  • Under and Over pressure monitoring -10…+200 mb pressure transmitter
  • -1 to 20 bar g compound range IS 4-20mA propane pressure sensor for process control use
  • -2 to 2 inHg g 4-20mA out intake and exhaust air pressure sensor for building management use
  • -5 to +5 psi g low compound range 4 to 20 mA output OEM pressure sensor
  • Solvent compatible +/-100mWG dp transmitter with PTFE seals
  • DP sensor for -1 to 3 bar differential water pressure and 20 bar overpressure
  • Compound range -1 to 6 barg pressure transmitter & display
  • 1000 pascal bidirectional range dry gas pressure transmitter
  • 15,000 Pa DP Transmitter with built-in digital display
  • Compound vacuum and pressure HART transmitter for +/- 500 mmWG
  • -10 to +10 inH2O Air Pressure Sensor for Ventilation & Extraction
  • ATEX rated room ±100 Pa differential pressure transmitter
  • Bi-directional 15psig 4-20mA out air pressure sensor for research use
  • -3 to 3 psi dp range high accuracy 4-20mA air pressure transmitter for water treatment use
  • -3 to 4 mbar dp range 4-20mA ATEX approved biogas pressure sensor for process control use on a 1bar line
  • -0.5 to +4 bar g bidirectional air pressure transmitter
  • +/- 30 inches of water compound range pressure transmitter
  • Ammonia compatible -0.5 to +5 bar compound pressure transmitter
  • -10 to +5 psi compound range fresh water pressure sensor
  • -1 to +5 bar relative 4-20mA out low cost combined vacuum and pressure sensor
  • Compound +/-2.5 mbar DP transmitter, indicator & alarm switch
  • 100 Pa bi-directional range differential air pressure transmitter
  • +/- 1 inH2O compound range pressure sensor
  • -0.1 to +0.1 inH2O g range 4-20mA signal air pressure sensor and display for pharmaceutical manufacturing use
  • -200 to 200 Pa bi-directional range 4-20mA output dp pressure transmitter for venturi tube
  • -760mmHg to +20 kg/cm² pressure transmitter with HART coms

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