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.

• 100 Pa bi-directional range differential air pressure transmitter - Bi-directional low range 4 to 20 milliamp differential pressure transmitter covering an air pressure range from -100 to +100 pascals, for cleanrooms, isolation rooms, and filter monitoring.
• -10…30 kPa g compound range inert gas pressure transmitter for ship IG system - An intrinsically safe, marine approved compound range pressure transmitter for ship cargo tank IG system use to measure pressure of inert gas over a range of -10 to 30 kPa g from the G1/2 male process connection, and sending the corresponding 4-20mA signal through the DIN plug electrical connection.

• DMP331 Precision Pressure Transmitter
• IMP Low Cost Pressure Sensor
• DS200P Sanitary Low Range Pressure Gauge, Switch and Sensor
• x|act i Rangeable Flush Pressure Transmitter with LCD Readout

• DS200 Combined Pressure Switch, Gauge and Sensor
• XMPi Process Plant Gauge and Absolute Pressure Transmitter
• TK Industrial Pressure Transmitter

• ATEX rated room ±100 Pa differential pressure transmitter
• 15,000 Pa DP Transmitter with built-in digital display
• Marine and IS approved, -1 to 3 mWG compound range pressure transmitter
• +/- 30 inches of water compound range pressure transmitter
• Compound range -1 to 6 barg pressure transmitter & display
• -1 to +5 bar relative 4-20mA out low cost combined vacuum and 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
• -1 to 20 bar g compound range IS 4-20mA propane pressure sensor for process control use
• Ammonia compatible -0.5 to +5 bar compound pressure transmitter
• -1 to 10 bar ATEX pressure sensor
• -10 to +5 psi compound range fresh water pressure sensor

Find out more about Compound Range Pressure Transmitters to determine which product options and capabilities will best meet your application requirements.