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Catalog excerpts
![BWX - 1](https://img.directindustry.com/pdf/repository_di/6196/bwx-749210_1m.jpg)
Mechatronic Electrical pressure measurement temperature measurement Bourdon tube pressure switch Stainless steel version Model BWX WIKA data sheet PV 32.20 Process Performance Series Applications ■■ Pressure monitoring and control of processes ■■ Safety-critical applications in general process instrumen- tation, especially in the chemical and petrochemical industries, oil and gas industries, power generation incl. nuclear power plants, water/wastewater industries, mining ■■ For gaseous,liquid and aggressive media, also in aggressive ambience Special features ■■ No power supply needed for switching of electrical loads ■■ Robust switch enclosure from 316L, IP 66, NEMA 4X ■■ Setting ranges from 0 ... 2.5 bar up to 0 ... 1,000 bar, vacuum ranges ■■ 1 or 2 independent set points, SPDT or DPDT, high switch- Bourdon tube pressure switch model BWX Description These high-quality pressure switches have been developed especially for safety-critical applications. The high quality of the products and manufacturing in accordance with ISO 9001 ensure reliable monitoring of your plant. In production, the switches are traced by quality assurance software at every step and subsequently are 100 % tested. All wetted materials are from stainless steel as a standard. In order to ensure as flexible operation as possible, the pressure switches are fitted with micro switches, which enable the switching of an electrical load of up to AC 250 V, 20 A directly. For lower switching power ratings, such as for PLC applications, argon gas-filled micro switches with gold-plated contacts can be selected as an option. For applications with special requirements on the wetted parts, a version with Monel is available. By using a Bourdon tube measuring system, the model BWX pressure switch is extremely robust and guarantees optimal operating characteristics and the highest measuring performances with repeatability lower than 0.5 % of span. WIKA data sheet PV 32.20 ∙ 11/2015 Data sheets showing similar products: Bourdon tube pressure switch, flameproof enclosure Ex d; model BA and BAX; see
Open the catalog to page 1![BWX - 2](https://img.directindustry.com/pdf/repository_di/6196/bwx-749210_2m.jpg)
Switch enclosure Stainless steel 316L, tamper-proof. Laser-engraved product label from stainless steel. Ingress protection IP 66 per EN 60529 / lEC 60529, NEMA 4X Permissible temperature Ambient Tamb: -40 ... +85 °C Switch contact Micro switches with fixed dead band ■ 1 x or 2 x SPDT (single pole double throw) ■ 1 x DPDT (double pole double throw) Micro switches with adjustable dead band ■ 1 x SPDT (single pole double throw) Ignition protection type (option) ■ Ex ia I Ma (mines) ■ Ex ia IIC T6/T4 1) Ga (gas) ■ Ex ia IIIC T85/T135 1) Da (dust) 1) The temperature class is related to the...
Open the catalog to page 2![BWX - 3](https://img.directindustry.com/pdf/repository_di/6196/bwx-749210_3m.jpg)
Process connection Stainless steel, lower mount (LM) ■ % NPT female (standard) ■ V2 NPT, G V2 A, G % A male via adapter ■ V2 NPT, G % female via adapter ■ M20 x 1.5 male via adapter Electrical connection ■ V2 NPT female (standard) ■ % NPT, M 20 x 1.5, G V2, G % female ■ Cable gland non-armoured, nickel-plated brass ■ Cable gland non-armoured, stainless steel (AISI 304) ■ Cable gland armoured, nickel-plated brass ■ Cable gland armoured, stainless steel (AISI 304) ■ MIL connector, 7-pin, DTL 5015 For cable connections to the internal terminal block use wire cross-sections between 0.5 ... 2.5...
Open the catalog to page 3![BWX - 4](https://img.directindustry.com/pdf/repository_di/6196/bwx-749210_4m.jpg)
Mounting Direct or wall mounting ■■ Mounting fixture from stainless steel (AISI 304) ■■ Option: Mounting bracket for 2" pipe mounting For mounting positions see drawing on page 5. Assembly (Option) ■■ Shut-off valve model 910.11, see data sheet AC 09.02 ■■ Barstock valve model 910.81, see data sheet AC 09.18 ■■ Diaphragm seals, see website ■■ Cleaned for oxygen service ■■ Drying of wetted parts ■■ Permissible ambient temperature -60 ... +85 °C 1) ■■ Offshore version 2) ■■ NACE compliant to MR 0175, ISO 15156 and MR 0103 2) ■■ Wetted parts from Monel 1) Only available for contacts without...
Open the catalog to page 4![BWX - 5](https://img.directindustry.com/pdf/repository_di/6196/bwx-749210_5m.jpg)
Permissible mounting position Electrical connection Process connection Example of assembly with diaphragm seal Ordering information Model / Unit / Setting range / Number of switches / Contact type / Process connection / Electrical connection / Wetted parts / Options © 2009 WIKA Alexander Wiegand SE & Co. KG, all rights reserved. The specifications given in this document represent the state of engineering at the time of publishing. We reserve the right to make modifications to the specifications and materials. WIKA data sheet PV 32.20 ∙ 11/2015 WIKA Alexander Wiegand SE & Co. KG...
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