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Differential pressure type flow switch FS-M-DF003A
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product category: Differential pressure type flow switch
Model: FS-M-DF003A
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Product Detail
FS-M-DF003 fixed differential pressure switch controls according to the resistance of the
HVAC equipment and the flow curve, HVAC water-side heat exchanger (cover-tube type,
shell-tube type, tube-plate type and used plate heat exchanger), water filtration, valves
and pump have a pressure drop and flow performance curve. As long as compare the
both sides of measurement of differential pressure switch with the pre-set value, it can
accurately control the flow.
1. Easily field adjustment.
2. Specially develop for high-volume OEM customers.
3. A variety of ranges, high precision, good reliability.
4. Can be customized according to customers’ actual situation..
5. The differential pressure switch also applies to the overheating of the heating coil frost
protection and industrial cooling circuit protection.
6. Reduce the breakdown and hidden danger because of improper installation and design
of the site water system.
7. Differential pressure switch based on customer demand, producing a good tune, and
now can not be changed to reduce the misuse.
8. Fixed differential pressure switches are suitable for flow control filters of the ventilation
system, monitoring blower and air-conditioning valve.
| Storage temperature | －29℃～82℃ |
| Ambient temperature | -20～71℃ |
| Media temperature range | －20℃～93℃ |
| High-low pressure side of the connector | 1/4 "SAE (7/16"-20UNF), 1/4 "NPT optional |
| Max static pressure | 10bar |
| Max differential pressure | 5bar |
| Set point repeatability deviation | ± 1% |
| Output | a set of SPDT dry contact output, one / two output optional, factory setting is normally open |
| Switch | 10A(max)、125/250VAC |
| Mode of connection | DIN 43650C connector / attached line (105℃ flame retardant protection line 2X0.75mm2 or 3X0.75mm2) optional |
1. Differential pressure switch can set pressure value through direct adjusting knob with a
scale, rather than connect other pressure gauge and control return difference to adjust by
a "-" adjusting screw.
2. The scale value of the differential pressure switch is calibrated to the scale of vertical
mounting, when using horizontal mounting; the actual pressure difference value is
approximately above the set value 20Pa.
3. Differential pressure switch can be directly installed by the factory within the unit, parts
installed in the field does not affect the accuracy of flow control, and without any requirements
on the main pipe diameter.
More information
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