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The valve position indicator is a precision gear motor that indicates the flow of a specific amount of oil through the device, with a window showing the position of the amount of oil passing through.
The gears rotate according to the flow of fluid and the direction of flow. A built-in micro-gearbox, the gear ratio of which is selected to suit the displacement, transfers the movement of the gear motor to the indicator shaft. There is no mechanical connection between the gear motor and the indicator shaft. The rotational motion of the hydraulic gear is transmitted to the indicator shaft via a magnetic clutch. This eliminates possible external leaks. The indicator arrow moves within an adjustable scale angle between 75° and 200°.
Specifications and models:
The VPI indicator comes in three versions
VPI-V: visual indication
VPI-E: visual + electrical signal output non-edge contact signal
VPI-C: Visual + analog (potentiometer) indication
Hydraulic parameters:
Maximum working pressure: 135 bar ~1958 1bf/in
Test pressure: 205 bar~ 2973 lbf/in
Burst pressure:>525 bar~7615 lbf/in
Temperature range: -20°C to 80°C ~ -4°F to 176°F
Viscosity range: 15-200cSt
Filtration requirements: 25μm nominal
Hydraulic medium: Acid-free hydraulic oil
Maximum flow:100cm/sec~61/min
Minimum flow:3 cm/sec~0.31/min
Connection surface: DIN 24 340 Cetop-3 / VPI connection
Protection rating: IP 44/IP 67-on request
Wiring diagram
