Product variations
product description
Formerly known as "Volutron"
The VHZ gearwheel flow meter measures the flow according to the volumetric principle, where a pair of gearwheels is moved proportional to the flow rate. The movement of the gearwheels is measured through the closed housing wall by a sensor. The devices are suitable for viscous, fluid, self-lubricating media, as well as for aqueous fluids such as soaps, pasts, emulsions etc. which have a non-abrasive character. Because of the volumetric operation, the devices are almost completely independent of viscosity.
A push-pull transistor output, an A / B output or a 2-wire output are available as signal output. The push-pull output can optionally be connected as a PNP or an NPN output, and emits a frequency proportional to the flow rate.
The A / B output consists of two push-pull outputs. Their signals are phase-shifted by 90°. Thus, it is possible to determine the direction of flow by using the bidirectionally driven sensor. The 2-wire model represents the pulses by two different currents and has the advantage of reduced wiring effort.
Specifications:
With integrated evaluation electronic available in the following construction types:
LABO-VHZ: evaluation electronic with analog output or switching function incl.
FLEX-VHZ: evaluation electronic with analog output and switching function incl.
OMNI-VHZ: evaluation electronic with analog output, switching function and display incl.
General information:
The VHZ gearwheel flow meter measures the flow according to the volumetric principle, where a pair of gearwheels is moved proportional to the flow rate. The movement of the gearwheels is measured through the closed housing wall by a sensor. The devices are suitable for viscous, fluid, self-lubricating media, as well as for aqueous fluids such as soaps, pasts, emulsions etc. which have a non-abrasive character. Because of the volumetric operation, the devices are almost completely independent of viscosity.
A push-pull transistor output, an A / B output or a 2-wire output are available as signal output. The push-pull output can optionally be connected as a PNP or an NPN output, and emits a frequency proportional to the flow rate.
The A / B output consists of two push-pull outputs. Their signals are phase-shifted by 90°. Thus, it is possible to determine the direction of flow by using the bidirectionally driven sensor. The 2-wire model represents the pulses by two different currents and has the advantage of reduced wiring effort.
- Ideally suited for viscous media (oils)
- Light and compact construction in an aluminium housing
- For cost-sensitive applications
Specifications:
| Aappliance: | flow, measurement, optionally: indication |
| Medium: | water, oil |
| Total measuring range: | 0.02 l/min to 150 l/min H2O or oil |
| Connection: | G 1/4 to G 1 internal thread, aluminium or stainless steel |
| Basic data: | PN 100 bar to 200 bar, temperature of medium -25°C to +80°C, optionally -25°C to +120°C (2-wire model DN 10-25) |
| Electrical data: | gearwheel volumeter, 3-wire or A / B output: supply voltage 10 V DC to 30 V DC, current consumption approx. 20 mA without load 2-wire: supply voltage 4.5 V DC to 24 V DC |
With integrated evaluation electronic available in the following construction types:
LABO-VHZ: evaluation electronic with analog output or switching function incl.
FLEX-VHZ: evaluation electronic with analog output and switching function incl.
OMNI-VHZ: evaluation electronic with analog output, switching function and display incl.
Downloads
data sheet English (0.50 MB)
data sheet German (0.50 MB)