Menu
FacebookTwitterLinkedinRSS Feed

Positive displacement flow sensor Type VZ...VA-S

 

Product description

Possible areas of applicationPositive displacement flow sensor Type VZ...VA-S

SIKA gearwheel flow meters are ideal for measuring flow rates at high or varying viscosities as used in the following application areas:

  • Consumption measurement
  • Control of filling operations
  • Dosage of oils and chemicals
  • Flow measurement of paints / varnishes

 

Description

Function
A very precisely adjusted gear pair within the casing forms the measuring element. The inflowing medium causes the gear pair to rotate. The rotary motion is scanned by contactless sensors. Since each individual tooth generates a pulse, this results in a very high resolution. Consequently, even the smallest volumes can be measured or dosed precisely.

The measurement unit contains two pick-offs that are circumferentially offset by ¼ of a tooth pitch to generate a 2 channel flow-proportional frequency signal. Suitable processing of the signal provides an greater resolution and the option to identify the flow direction.

The maximum pressure drop should not exceed 16 bar. This limits the measurement range of high viscosity media (see pressure drop diagrams). Basically, the measurement accuracy increases with increase in viscosity of the media.

 

Technical features

Technical features

 
Measuring accuracy ±0.3 % of reading (21 mm²/s)
Repeatability 0.05 % for same conditions

Measuring range* [l/min]

VZ 0.025-S
VZ 0.04-S
VZ 0.2-S
VZ 0.4-S
VZ 1-S
VZ 3-S
VZ 5-S

 

0.008...2
0.02...4
0.16...16
0.2...40
0.4...80
0.6...160
1...250

Resolution [Pulse/l]

VZ 0.025-S
VZ 0.04-S
VZ 0.2-S
VZ 0.4-S
VZ 1-S
VZ 3-S
VZ 5-S

 

40 000
25 000
4081.63
2500
965.25
333.33
191.50

Pressure rating

VZ 0.025... to VZ 1...
VZ 3... to VZ 5...
 

 

Max. 400 bar
Max. 350 bar
Higher pressure rating on request

Medium temperature range (depends on sealing material)

FKM
Standard
High temperature
Ex version

FEP
Standard
High temperature
Ex version

EPDM
Standard
High temperature
Ex version

 

 

-15...120 °C
-15...150 °C
-15...80 °C


-30...120 °C
-30...150 °C
-30...80 °C


-30...120 °C
-30...150 °C
-30...80 °C

Ambient temperature range (depends on sealing material)

FKM
FEP
EPDM

 


-15...80 °C
-30...80 °C
-30...80 °C

Process connection Via subplate with lateral female thread connection
Power supply 12...30 VDC / max. 90 mA
Housing Stainless steel 1.4404

* For media with high viscosity the measuring range is reduced. The max. pressure drop shouldn’t exceeded 16 bar.

 

 

Further details and accessories can be found in the datasheet.

Contact

Contact us

 
For inquiries or further informations please contact our product specialists by using the contact form below. Thank you!
Please fill all required fields*.
 
Go to top