Measuring technology for flow rate, mass flow rate and flow velocity

Probe ZS25 ... ZG4

Probe ZS25 ... ZG4

Probe ZS25 ... ZG4 - standard for fixed measuring - with connection housing

Cylindrical vane wheel sensor / insertion probe with probe diameter 25 mm and integrated transducer UFA (optional).

Probe material: stainless steel.

Working temperature range up to +550 °C.

Suitable for fixed measuring of actual flow velocity v [m/s] and flow rate V/t [m³/h, l/min] in clean gases and liquids, briefly also in particle-laden mediums.

Signal evaluation with integrated or separate transducer UFA, flowtherm NT, flowtherm Ex and system units.

Measuring range

0.4 ... 120 m/s in air/gases
0.04 ... 10 m/s in water/liquids

Pressure resistance

up to 10 bar / 1 MPa overpressure

Media temperature

-40 ... +550 °C


gases / liquids

Displayed indicators

flow velocity, flow rate, volume

IP protection type

IP65 (connection housing)

Type of protection

with UFA: ATEX category 3G and 3D (zone 2 and 22), (optional)
without UFA: ATEX category 2G (zone 1), (optional)

Sensor output

analog output 4-20 mA
limit value
quantity pulse
RS232 interface (only with UFA)