Flow Measurement and Monitoring
DS08
Viscosity Compensated Variable
Area Flow Meter and Switch
Mounting Independent
for High Pressure Applications
•
for viscous media up to 600 cSt
•
mounts in any position without recalibration
•
compact design, high switching accuracy
•
version in brass or stainless steel
•
very small switching hysteresis
•
robust design without glass measuring tube
•
suitable for high operating pressures
•
Ex- version acc. to ATEX optional
•
analogue transmitter 4...20 mA available
Description:
The flow meter and switch model DS08 works according to a
modified variable area principle. The float is guided in a cylin-
drical measuring tube by means of a spring. The flowing
medium moves the float in the flow direction.
An externally mounted pointer indicator is magnetically cou-
pled to the float and thus, following the float position, indi-
cates the flow rate on a scale. A Reed contact is mounted
outside the meter in a sealed housing. When the float reaches
the position of the Reed contact the switch will close. With
higher flows the float moves further upward until it reaches a
built-in float stop, still keeping the switch closed. This ensures
a bistable switch function at any time.
Viscosity compensation, mounting position and
reliability:
The built-in spring and the magnetic float guarantee an abso-
lute reliability of the meter. This spring, which pushes the float
back towards its zero position against the flow makes it
possible to use the meter in any mounting position. The
spring is artificially aged, thus eliminating the need for
recalibration to the different mounting positions. The strong
spring and an orifice in the float work together to
limit the effects of viscosity changes to an absolute minimum
compared to regular variable area flow meters.
Typical applications:
The variable area flow meter and switch model DS08 is used
for measuring and monitoring the flow of viscous liquids, i. e.
in central lubricating systems, any other lubricating circuitry,
hydraulics, transformer oils etc.
PKP Prozessmesstechnik GmbH
Borsigstr. 24 • D-65205 Wiesbaden
S
+49 (0) 6122-7055-0 •
T
+49 (0) 6122 7055-50
[email protected] • www.pkp.de
20200302