Pressure gauges by WIKA
WIKA is a world leader in the manufacture of mechanical pressure measuring instruments (pressure gauges). The pressure gauges are available with scale ranges of 0 ... 0.5 mbar up to 0 ... 7,000 bar, making them optimally suited for any application. No matter the industry or measuring requirement, we offer you the right WIKA pressure gauge for gauge, absolute and differential pressure. WIKA Bourdon tube, diaphragm or capsule pressure gauges are used for pressure measurement and pressure indication.
Where are absolute pressure gauges used?
When measured pressures are independent of the natural fluctuations in atmospheric pressure, absolute pressure gauges are used. The pressure of the measured media is determined against a reference pressure, which corresponds to the absolute pressure zero point. So that there can be a near-perfect vacuum in the reference chamber, this is completely evacuated. The scale ranges for the pressure gauges are between 0 … 25 mbar absolute and 0 … 25 bar absolute, with accuracy classes of 0.6 ... 2.5. These highly precise pressure gauges are used, for example, for monitoring in vacuum packaging machines and vacuum pumps. They are also used for the monitoring of condensation pressures in laboratories or for the determination of vapour pressure in liquids.
Where are differential pressure gauges used?
Differential pressure gauges work with a wide range of pressure elements. As a result, measuring ranges from 0 ... 0.5 mbar up to 0 ... 1,000 bar and static overlay pressures up to 400 bar are possible. These differential pressure gauges monitor, e.g., the flow of gaseous and liquid media and the degree of fouling in filtration plants. They are also used for overpressure monitoring in cleanrooms and for level measurement in closed vessels. Differential pressure gauges are also suitable for the control of pumping plants.
Can WIKA pressure gauges be used for measuring negative pressure (negative pressure gauges)?
WIKA pressure gauges cannot only be used for the measurement of positive, but also for the measurement of negative gauge pressure. As soon as the absolute pressure is lower than the atmospheric pressure, one refers to it as negative gauge pressure. Previously, this gauge pressure with a negative sign was also designated as underpressure. In order to avoid misunderstandings which might arise from the sign, the designation “underpressure” is nowadays not used any more.