Indicating type differential pressure switch with bellows element_P640 series
P640 series
Service intended
The P640 series are designed to measure differential pressure from 25 kPa to 2.0 MPa at static pressure 10 MPa and have electrical contact. A set of two stainless steel bellows mounted on a force balance allows direct reading of the actual differential pressure.
Nominal diameter | 150 mm |
Accuracy | ±1.0 % of full scale ±1.5 % of full scale |
Scale range (MPa, kPa, bar, mbar) | 0 ~ 25 kPa to 0 ~ 0.25 MPa (P641 model) 0 ~ 0.4 MPa to 0 ~ 2.0 MPa (P642 model) |
Static pressure | Max. 10 MPa |
Working temperature | Ambient : -20 ~ 65 °C Fluid : Max. 100 °C |
Degree of protection | EN60529/IEC529/IP65 |
Temperature effect | Accuracy at temperature above and below the reference temperature (20 ℃) will be effected by approximately ±0.5 % per 10 ℃ of full scale |
Standard features
Pressure connection | Stainless steel (316L SS), Monel and Hastelloy-C |
Element | Bellows Stainless steel (316L SS), Monel and Hastelloy-C |
Case and cover | ALDC12.1, Black painted Screwed type |
Window | Safety glass |
Dial | White aluminium with black graduations |
Filling liquid for differential cell | Silicone oil |
Pointer | Black painted aluminium alloy (Zero adjustable) |
Contact | Contact rating : AC 250 V 3 A / 125 V 5 A DC 250 V 0.2 A / 125 V 0.4 A / 30 V 4 A Dielectric strength : AC 500 V / MIN Type : Micro contact, One and two SPDT |
Conduit connection | ¾" PF(F) |
Process connection | ¼" NPT(F) ½" NPT(F) at 3-way and 5-way manifold valve |
Standard accessories | Mounting bracket for 2" pipe mounting with silver gray finished steel |
Option | ■ Remote seal - Not available with less than 40 kPa of differential pressure range ■ Mounting bracket with 316SS for 2" pipe ■ 3-way manifold valve (316SS, Monel) ■ 5-way manifold valve (316SS, Monel) |
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Trực tuyến:2
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Hôm nay:4043
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Tuần này:4564
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Tháng trước:11981
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Tất cả:1971974