[PDF] Bourdon tube pressure switch Stainless steel version Model BWX

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Pressure

WIKA data sheet PV 32.20

Page 1 of 8

For further approvals,

see page 5

Data sheets showing similar products:

see data sheet PV 31.21

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. the switching of an electrical load of up to AC 250 V, 20 A directly. For lower switching power ratings, such as for PLC contacts can be selected.Depending on the application, the appropriate variant for the contact version and the electrical connection can be select often a feature necessary for control processes. For applications with special requirements on the wetted parts, a version with Monel is available. operating characteristics and the highest measuring perfor mances, with repeatability lower than 0.5 % of span. For safety applications, the pressure switch is optionally

Bourdon tube pressure switch

Stainless steel version

Model BWX

WIKA data sheet PV 32.20̓06/2023

Process Performance SeriesSIL3

IEC 61508 / IEC 61511

Bourdon tube pressure switch model BWX

Applications

ϮPressure monitoring and control of processes

ϮSafety-critical applications in general process instrumen- tation, especially in the chemical and petrochemical indus tries, oil and gas industries, power generation incl. nuclear power plants, water/wastewater industries, mining ϮFor gaseous and liquid, aggressive and highly viscous or contaminated media, also in aggressive environments

Special features

ϮSetting ranges from 0 ... 2.5 bar up to 0 ... 1,000 bar, vacuum ranges

ϮSwitch point repeatability < 0.5 %

Ϯ1 or 2 independent switch points, high switching power up to AC 250 V, 20 A, no supply voltage needed

Basic information

VersionBourdon tube pressure switch

Special design feature

oil and gas production cracking

ϮVersion for hydrogen (H

2

ϮDrying of wetted parts

ϮVersion for ammonia applications

ϮGeothermal version

ϮLow-temperature version to -60 °C

ϮAssembled as a diaphragm seal system

Function

The DPDT function is realised with 2 simultaneously triggering SPDT microswitches, within 0.2 % of span.

Dead band

Switch enclosure

DesignCase cover with bayonet lock, protection against unauthorised access by lead sealing possible. Laser-engraved product label from stainless steel.

MaterialStainless steel 316L

Mounting

2)

ϮDirect mounting

Contact versionElectrical rating (resistive load)Suitable for

Ex ia optionACDC

With adjustable dead band

RR 3) Contact versionElectrical rating (resistive load)Suitable for

Ex ia optionACDC

DR 3)

Setting range

Setting range

(=working range)Proof pressureFixed dead bandAdjustable dead band in barin bar1 contact

UN, US, UO, UG

in bar2 contacts

DN, DS, DO, DG

in bar1 contact UR in bar

0 ... 100160̞ʹ̞ʹ6 ... 17

0 ... 160210̞ʺ̞ʺ13 ... 35

0 ... 250330̞ʼ̞ʼ21 ... 65

0 ... 400ʻʿʷ̞ʿ̞ʿ26 ... 93

0 ... 1,000

1)

1,200̞ʹʷ̞ʺʷ75 ... 190

Distance between set points

Set point adjustment

thus secured against loss. the switching direction.

Example

Setting range: 0 ... 100 bar with one switch contact

Repeatability: 0.5 % of 100 bar = 0.5 bar

Process connection

Size

Ϯ¼ NPT, female thread

Ϯ½ NPT, female thread via adapter

Ϯ½ NPT, male thread via adapter

ϮG ¼, female thread via adapter

ϮG ½ A, male thread via adapter

ϮG ¼ A, male thread via adapter

Material (wetted)

Sensor elementDepending on the selected version

Other process connections on request

Wetted parts

VersionBourdon tubeProcess connection

StandardStainless steel AISI 316L

NACE

Setting range: 0 ... 40 to 0 ... 400 barMonel

ʻʷʷStainless steel AISI 316L

Monel

Setting range: 0 ... 40 to 0 ... 400 barMonel

Electrical connection

Connection type ϮFemale thread ½ NPT

ϮCable gland non-armoured, nickel-plated brass

ϮCable gland armoured, nickel-plated brass

ϮMIL connector, 7-pin, DTL 5015

For the grounding cable connection to the protective conductor use Pin assignmentConnection details are given on the product label of the instrument. Connection terminals and the ground terminal are appropriately marked.

Operating conditions

Ambient temperature rangeT6/T85°CT

a a

Approvals

LogoDescriptionRegion

EU declaration of conformity

Pressure equipment directive

Low voltage directive

RoHS directive

Optional approvals

LogoDescriptionRegion

EU declaration of conformity

I M 1

II 1 GD

IECEx 1) Ga

Da IP66International

UKCA regulations EAC

Hazardous areas

Ex Ukraine

Hazardous areas

CCC

Hazardous areas

China KCs

Hazardous areas

South Korea

-ECAS

Hazardous areas

LogoDescription

SIL 3-capable (option)

SIL3

IEC 61508 / IEC 61511

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