Variable-area flowmeter DS08 series
volumefor liquidsstainless steel

Variable-area flowmeter - DS08 series - PKP PROZESSMESSTECHNIK GMBH - volume / for liquids / stainless steel
Variable-area flowmeter - DS08 series - PKP PROZESSMESSTECHNIK GMBH - volume / for liquids / stainless steel
Variable-area flowmeter - DS08 series - PKP PROZESSMESSTECHNIK GMBH - volume / for liquids / stainless steel - image - 2
Variable-area flowmeter - DS08 series - PKP PROZESSMESSTECHNIK GMBH - volume / for liquids / stainless steel - image - 3
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Characteristics

Technology
variable-area
Type
volume
Fluid
for liquids
Material
stainless steel, brass
Communication
4-20 mA
Protection level
ATEX, IP67
Applications
high-pressure
Other characteristics
high-pressure
Volumetric flow rate

Max.: 110 l/min
(29.0589 us gal/min)

Min.: 35 l/min
(9.246 us gal/min)

Process temperature

Max.: 160 °C
(320 °F)

Min.: -20 °C
(-4 °F)

Process pressure

350 bar
(5,076.32 psi)

Precision

10 %

Description

The flow meter and switch model DS08 works according to a modified variable area principle. The float is guided in a cylin­drical measuring tube by means of a spring. The flowing medium moves the float in the flow direction. An externally mounted pointer indicator is magnetically cou­pled to the float and thus, following the float position, indi­cates 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 abso­lute 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.

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