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庫存編號 451-1302
製造零件編號I705S-13G-3484
BrandDruck
HK$8,349.50
單位
±0.1 % - 1 20bar 0bar - Yes Yes - Yes IP54 AA LCD 40bar
RS庫存編號 287-636
製造零件編號FLUKE 922/KIT
BrandFluke
HK$5,440.00
單位
±1% +0.01 mbar - - 40mbar - Differential - Yes Yes - IP40 AA LCD -
RS庫存編號 312-0523
製造零件編號I705-13G-2388
BrandDruck
HK$6,564.87
單位
±0.1 % - 1 20bar 0bar - Yes Yes - - IP54 AA LCD 40bar
RS庫存編號 850-7672
製造零件編號FLUKE 922
BrandFluke
HK$4,154.65
單位
±1 % - - 6psi -6psi Differential - Yes Yes - IP40 AA LCD -
RS庫存編號 787-4603
製造零件編號DPI705R-11G
BrandDruck
HK$7,632.96
單位
±0.1 % - 1 10bar 0bar Gauge Yes Yes - No IP54 AA LCD 20bar
RS庫存編號 920-5188
製造零件編號0563 0510
BrandTesto
HK$1,132.63
單位
+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庫存編號 313-0233
製造零件編號2023P7
BrandDigitron
HK$4,341.44
單位
±0.15% + 0.0105 bar + 1 Digit - 2 7bar 0bar Differential - Yes - - IP67 AA LCD 10bar
RS庫存編號 539-5072
製造零件編號2028P7
BrandDigitron
HK$3,149.06
單位
±0.15% + 0.0015 bar + 1 Digit - 2 1bar 0bar Differential - Yes - - IP67 AA LCD 2bar
RS庫存編號 312-1122
製造零件編號C9507IS
BrandComark
HK$4,525.52
單位
±0.2 % - 2 7bar -7bar Differential - Yes - Yes IP67 9V LCD 13700mbar
RS庫存編號 451-1295
製造零件編號I705S-07A-3484
BrandDruck
HK$6,704.60
單位
±0.1 % - 1 2bar 0bar Absolute Yes Yes - Yes IP54 AA LCD 4bar
RS庫存編號 313-0924
製造零件編號2020P7
BrandDigitron
HK$3,411.31
單位
±0.15% + 0.0375 mbar + 1 Digit - 2 25mbar 0mbar Differential - Yes - - IP67 AA LCD 350bar
RS庫存編號 460-9780
製造零件編號PM-80
BrandDigitron
HK$1,910.62
單位
±0.2 % - 2 130mbar 0mbar Differential - - - - IP65, IP67 AA LCD 1bar
RS庫存編號 313-0205
製造零件編號2022P7
BrandDigitron
HK$3,149.06
單位
±0.15% + 0.003 bar + 1 Digit - 2 2bar 0bar Differential - Yes - - IP67 AA LCD 4bar
RS庫存編號 312-0539
製造零件編號I705-07A-2388
BrandDruck
HK$6,564.87
單位
±0.1 % - 1 2bar 0bar Absolute Yes Yes - - IP54 AA LCD 4bar
RS庫存編號 451-1267
製造零件編號I705S-02L-3484
BrandDruck
HK$8,349.50
單位
±0.1 % - 2 200mbar 0mbar Differential Yes Yes - Yes IP54 AA LCD 400mbar
RS庫存編號 312-0517
製造零件編號I705-07G-2388
BrandDruck
HK$6,564.87
單位
±0.1 % - 1 2bar 0bar Gauge Yes Yes - - IP54 AA LCD 4bar
RS庫存編號 437-8931
製造零件編號PM-20
BrandDigitron
HK$1,475.38
單位
±0.2 % - 2 130mbar 0bar Differential - - - - IP67 AA LCD -
RS庫存編號 315-7244
製造零件編號2021P7
BrandDigitron
HK$4,360.00
單位
±0.15% + 0.195 mbar + 1 Digit RSCAL 2 130mbar 0mbar Differential - Yes - - IP67 AA LCD 750bar
RS庫存編號 114-152
製造零件編號0560 0511
BrandTesto
HK$1,320.71
單位
±3 % - - 1200mbar 300mbar Absolute - - - - IP40 AAA - -
RS庫存編號 339-4140
製造零件編號2026P7
BrandDigitron
HK$3,248.87
單位
±0.15% + 0.015 bar + 1 Digit - 2 10bar 0bar Differential - Yes - - IP67 AA LCD 21bar