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Kobata DPGN, DPGD Differential Pressure Gauges

Made in Japan
Manufacturer: Kowata Keiki Seisakusho Co., Ltd.
Model: DPGN, DPGD

Product Information

Model: DPGN type, DPGD type (MODEL TYPE: DPGN, DPGD)

This differential pressure gauge features two Bourdon tubes as the pressure receiving element, measuring and indicating the pressure difference between two locations. The NV type incorporates our unique overpressure prevention mechanism, ensuring you can use it confidently without worrying about instrument damage due to overpressure from improper opening and closing of the bypass valve (pressure equalizing valve). We also manufacture the SUS type and remote diaphragm type for the main parts, accommodating various usage conditions such as specified fluids.

Furthermore, we offer two types of cases: the indoor Wappa type and the outdoor type with a dustproof and drip-proof structure. As a special specification, the gauge can function as a flow meter, indicating the liquid level in a sealed tank or converting the flow rate using the conversion scale.

Product Specifications

size φ150, φ200
shape DPGN type (wall-mounted type), DPGD type (embedded type)
Normal reference pressure Various pressures from 0 to 0.1 MPa to 0 to 8 MPa (up to 3.5 MPa is standard for liquid-contacting SUS specifications)
Differential pressure maximum scale 1/3 or 1/5 of the normal reference pressure
Instruction format Concentric type (270° scale) When the maximum differential pressure scale is 1/3 of the normal reference pressure
Eccentric type (90° scale) When the maximum differential pressure scale is 1/5 of the normal reference pressure
Connection G3/8B, G1/2B or diaphragm type
(please consult us regarding the shape and material of the flange and diaphragm)
Differential pressure indication accuracy Within ±1.5% of maximum scale
Reproducibility Within ±1% of maximum scale
element Bourdon tube
Wetted Parts Material Bourdon tube C6872T, SUS316
Connection stock C3604BD, SUS316
Case structure Wappa type (indoor type), metal sealed screw lid type (outdoor type)
Material AC7A
Exterior Black semi-gloss baked finish
Permitted ambient temperature -5 to 45°C

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