
Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges.
A manometer could also be referring to a pressure measuring instrument, usually limited to measuring pressures near to atmospheric.
The term manometer is often used to refer specifically to liquid column hydrostatic instruments.
A vacuum gauge is used to measure the pressure in a vacuum—which is further divided into two subcategories, high and low vacuum (and sometimes ultra-high vacuum). The applicable pressure range of many of the techniques used to measure vacuums have an overlap.
| TYPE | HOUSING | DIMENSIONS | CONNECTIONS | PRESSURE (bar) |
| A 22-3IT | ABS | 50 mm | 1/4'' | 0...2,5 - 0...40 |
| A 32-3IT | ABS | 63 mm | 1/4'' | 0...2,5 - 0...40 |
| E 35-5IT | Stainless | 63 mm | 1/4'' | 0...2,5 - 0...40 |

|
|
ABS unfilled coating |
ABS glycerol coating |
Coating of stainless steel |
|
Coating |
ABS black |
ABS shock proof |
Stainless steel |
|
Transparent part |
Akryl |
Metakrylat |
Polycarbonat |
|
Starting mechanisam |
Brass |
Brass |
Brass |
|
Measuring element |
Copper alloy burdon tube |
Copper alloy burdon tube |
Copper alloy burdon tube |
|
Measuring scale |
Coloured white aluminium whitch shows double scale in bar/psi values |
Coloured white aluminium whitch shows double scale in bar/psi values |
Coloured white aluminium whitch shows double scale in bar/psi values |
|
Gauge |
Coloured black aluminium |
Coloured black aluminium |
Coloured black aluminium |
|
Welding |
Tin alloys |
Tin alloys |
Glycerin |
|
Working temperature |
-20°C do +50°C |
+5°C do +60°C |
+5°C do +60°C |
|
Protecton grade |
IP 43 |
IP 65 |
IP 65 |
|
Manometer diametar |
50mm I 63mm |
50mm I 63mm |
50mm, 63mm I 100mm |
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