Manometers

Manometers are instruments used to measure the pressure of liquids and gases, and are vital for maintaining and troubleshooting equipment that uses gas or liquid to operate. Most modern manometers are compact and portable digital instruments that offer greater levels of accuracy, safety and ease of use than older types featuring a U-shaped glass tube filled with liquid mercury.

What are the features of manometers?

Modern manometers are handheld, battery operated and have clear digital screens so that results can be easily read even in awkward places or in bright or dim light. Hi-tech sensors and sophisticated microprocessors give highly accurate readings, while many come with software that allows data to be transferred to laptops, smartphones or tablets for storage or analysis.

Most digital manometers have memory capacity for data logging. A range of maximum pressure measurements are available, and some models are designed to be intrinsically safe for use in hazardous environments.

How do manometers work?

Digital and analogue manometers work on the same principle of fluid displacement. In traditional U-tubed manometers, water fills the tube before a gas line introduces pressure to displace the water. The height to which the water rises is then measured on an analogue scale.

The modern digital manometer can accurately reproduce this process electronically, with pressures typically displayed in pounds per square inch (PSI). They can measure absolute pressure, differential pressure, and gauge pressure. In conjunction with a pitot tube, a manometer can convert pressure readings into air velocity (FPM).

Where are manometers used?

Manometers are used to measure air, gas or fluid pressure in commercial, domestic and industrial environments to ensure that levels remain optimal and safe. They can also be used to troubleshoot system failures and seek out leaks, and are commonly used for food processing, research and education.

In refrigeration systems, digital pressure meters can gauge pressure, vacuum and temperature. They can also help to establish flow and static pressure in gas systems, or be used for pressure-drop testing in gas pipes.


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Description Price Best Accuracy Calibrated Number of Pressure Ports Maximum Pressure Measurement Minimum Pressure Measurement Pressure Port Type Leak Testing Minimum/Maximum Recordings Data Logging Intrinsically Safe IP Rating Battery Type Display Type Overpressure Maximum
RS Stock No. 451-1267
Mfr. Part No.I705S-02L-3484
BrandDruck
MYR3,615.30
Each
units
±0.1 % - 2 200mbar 0mbar Differential Yes Yes - Yes IP54 AA LCD 400mbar
RS Stock No. 920-5188
Mfr. Part No.0563 0510
BrandTesto
MYR812.34
Each
units
+1.5 (0.40 → 40 inH2O) %, +1.5 (1.01 → 100 hPa) % - 2 40.15 inH2O, 100 hPa 0 hPa, 0 inH2O Differential - - - - IP40 AAA Backlit LCD -
RS Stock No. 312-0494
Mfr. Part No.I705-02L-2388
BrandDruck
MYR2,834.88
Each
units
±0.1 % - 2 0.2bar 0bar Differential Yes Yes - - IP54 AA LCD 400mbar
RS Stock No. 906-9424
Mfr. Part No.475-3-FM
MYR901.32
Each
units
±0.5 % - 2 7.22psi 0psi Differential - - - Yes - Alkaline LCD -
RS Stock No. 146-7723
BrandRS PRO
MYR3,799.14
Each
units
±0.1 % - 1 700bar 0bar Absolute Yes Yes - No IP54 Alkaline LCD 700bar
New
RS Stock No. 201-2879
Mfr. Part No.DPI705E-2-07G-P1-H0-U0-OP0
BrandDruck
MYR3,140.92
Each
units
±0.05 % - 1 2bar 0bar Gauge - - - - - - - -
New
RS Stock No. 201-2882
Mfr. Part No.DPI705E-2-11G-P1-H0-U0-OP0
BrandDruck
MYR3,140.92
Each
units
±0.05 % - 1 10bar 0bar Gauge - - - - - - - -
New
RS Stock No. 201-2874
Mfr. Part No.DPI705EIS-1-11G-P1-H1-U0-OP0
BrandDruck
MYR3,552.16
Each
units
±0.1 % - 1 10bar 0bar Gauge - - - - - - - -
New
RS Stock No. 201-2867
Mfr. Part No.DPI705E-1-11G-P1-H0-U0-OP0
BrandDruck
MYR2,866.76
Each
units
±0.1 % - 1 10bar 0bar Gauge - - - - - - - -
RS Stock No. 245-1236
Mfr. Part No.C9555
BrandComark
MYR1,914.64
Each
units
±0.2 % - 2 2.1bar 0bar Differential - Yes - No IP67 9V LCD 6200mbar
New
RS Stock No. 201-2870
Mfr. Part No.DPI705E-1-16G-P1-H0-U0-OP0
BrandDruck
MYR2,866.76
Each
units
±0.1 % - 1 70bar 0bar Gauge - - - - - - - -
RS Stock No. 451-1295
Mfr. Part No.I705S-07A-3484
BrandDruck
MYR3,773.13
Each
units
±0.1 % - 1 2bar 0bar Absolute Yes Yes - Yes IP54 AA LCD 4bar
New
RS Stock No. 201-2886
Mfr. Part No.DPI705EIS-2-07A-P1-H1-U0-OP0
BrandDruck
MYR3,826.32
Each
units
±0.05 % - 1 2bar 0.35bar Gauge - - - - - - - -
New
RS Stock No. 201-2884
Mfr. Part No.DPI705EIS-2-03G-P1-H1-U0-OP0
BrandDruck
MYR3,826.32
Each
units
±0.05 % - 1 0.35bar 0bar Gauge - - - - - - - -
RS Stock No. 478-3737
Mfr. Part No.P01184101
MYR3,137.40
Each
units
±0.3 % - - 6.89bar 0bar Differential Yes Yes - No - 9V LCD 10.33bar
New
RS Stock No. 201-2873
Mfr. Part No.DPI705EIS-1-07A-P1-H1-U0-OP0
BrandDruck
MYR3,552.16
Each
units
±0.1 % - 1 2bar 0.35bar Gauge - - - - - - - -
RS Stock No. 146-7717
BrandRS PRO
MYR2,467.94
Each
units
±0.1 % - 2 70mbar 0mbar Differential Yes Yes - No IP54 Alkaline LCD 70mbar
RS Stock No. 312-0539
Mfr. Part No.I705-07A-2388
BrandDruck
MYR2,834.88
Each
units
±0.1 % - 1 2bar 0bar Absolute Yes Yes - - IP54 AA LCD 4bar
New
RS Stock No. 201-2872
Mfr. Part No.DPI705EIS-1-07G-P1-H1-U0-OP0
BrandDruck
MYR3,552.16
Each
units
±0.1 % - 1 2bar 0bar Gauge - - - - - - - -
RS Stock No. 313-0261
Mfr. Part No.2025P7
BrandDigitron
MYR1,856.58
Each
units
±0.15% + 0.003 bar + 1 Digit - 1 2bar 0bar Absolute - Yes - - IP67 AA LCD 4bar