2
Product Data Sheet
SD 4100-2E04
September 2011
Damcos
®
VPI total programme
PTC-Block:
Technical specications
Max. working pressure: 135 bar ~ 1958 lbf/in
2
Test pressure: 225 bar ~ 2973 Ibf/in
2
Burst pressure: > 525 bar ~ 7615 Ibf/in
2
Temperature range: -20°C to 80°C ~ 4°F to 176°F
Viscosity range: 15-200cSt
Filtration requirement: 25 μm nominal
Hydraulic medium: Acid-free hydraulic oil
Max. ow: 100 cm
3
/sec ~ 6 l/min
Min. ow: 3 cm
3
/sec ~ 0.2 l/min
Connection face: DIN 24340 Cetop 3/VPI connection
Total programme
Temperature compensating block for indication of
end positions (VPI-V and -E). The TC-Block allows
the compression/decompression of the oil in the
system caused by major temperature and pressure
variations,
TC-Block:
Pressure and temperature compensating block pri-
marily for analog indication (VPI-C). The PTC-Block
allows the compression/decompression of the oil in
the system caused by major temperature and pres-
sure variations, without inuencing the indicator, and
without inuencing the indicator and ensures xed
electrical on/off remote ind. signal. The TC-Block is
provided with CETOP-3 connection for mounting of
pilot valve (4/2 way).
ensures precise intermediate positions, as the
positioning is always made at constant pressure (5
bar). The PTC-Block is provided with CETOP-3 con-
nection for mounting of solenoid pilot valve (4/3 way
spring center).
Basically the valve position indicator is a precision
gear motor with a display indicating the ow of a
certain oil volume through the unit. The gear wheels
rotate according to ow and ow direction of the
uid. A built-in mini gear box with a gear ratio chosen
to suit the actuator displacement in question trans-
fers the gear motor movement to the indicator shaft.
There is no mechanical connection between the gear
motor and the indicator shaft. The rotary movement
of the hydraulic gear wheels is transferred to the
indicator shaft by a magnetic clutch.