PXA

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WIKA · Pressure measurement · Family Process Mini Series

Miniature pressure switch, flameproof enclosure Ex d

Name: Miniature pressure switch, flameproof enclosure Ex d
Brand: WIKA

Miniature pressure switch with flameproof enclosure Ex d for safety-critical applications in process industries, featuring SIL 2/3 options, robust stainless steel 316 housing, IP66 rating, and wide pressure ranges up to 1,000 bar.

Range

-1…1000 bar

Accuracy

≤ 1 % of end of setting range (set point repeatability)

Protection

IP66

CERoHSEACNACENACE MR0175 / ISO 15156NACE MR0103 / ISO 17945Ex d I MbATEX: II 1/2 GD, II 2 GDEx UkraineCCCKOSHAII 1/2 GDEx d IIC T6/T4 Ga/GbEx d IIC T85°C/T135°C GbEx d IIC T6/T5 GbEx tb IIIC T85/T135 Db IP66ATEXIECEx

Price

On request

Depends on configuration

Request a quote

+38 (067) 285-77-70·info@avigan.com.uaViberTelegram

Description

These high-quality mechanical pressure switches have been developed especially for safety-critical applications. The great advantage of mechanical pressure switches is that no supply voltage is required for the switching process.

In production, the switches are traced by quality assurance software at every step and subsequently are 100 % tested. Due to its compactness, the model PXA pressure switch can be installed in measurement environments with limited space. The robust switch enclosure from stainless steel 316 can withstand the rough and corrosive operating conditions of the process industry with working ranges of up to 1,000 bar.

Special features

Compact and slim design
Robust switch enclosure from stainless steel 316, IP66, NEMA 4X
Wide selection of setting ranges available, 1 … 2.5 bar to 200 … 1,000 bar
Set point repeatability of ≤ 1 % for reliable switching
High switching power and large selection of contact variants and electrical connections

Identification

Model	PXA
Product family	Process Mini Series
Subcategory	Mechanical pressure switch

Measuring range

Pressure ranges

1…2.5 bar · 2…6 bar · 3…10 bar · 6…25 bar · 14…60 bar · 25…100 bar · 50…160 bar · 70…400 bar · 150…700 bar · 200…1000 bar · -1…1.5 bar · 1.6…6 bar

Accuracy

Accuracy class	≤ 1 % of end of setting range (set point repeatability)
Accuracy standard	IEC 61298-2:2008
Safety integrity level (SIL)	SIL 3-capable (option), per IEC 61508 / IEC 61513

Process conditions

Process connection	¼ NPT, female thread½ NPT, female thread via adapter½ NPT, male thread via adapterG ¼, female thread via adapterG ½ A, male thread via adapterG ¼ A, male thread via adapter1/4 NPT, female thread1/2 NPT, female thread via adapter1/2 NPT, male thread via adapterG1/4, female thread via adapterG1/2 A, male thread via adapterG1/4 A, male thread via adapter
Process temperature	−40…+200 °C

Electrical characteristics

Electrical connection	Threaded connection with connection cable (½ NPT male, M20 x 1.5, ½ NPT female, ¾ NPT female), terminal box with 3 x ½ NPT female, IP65
Switching function	Adjustable set point with fixed dead band, switching direction (rising/falling) configurable
Switching contacts	1

Materials

Case material	Stainless steel 316
Wetted parts material	Hastelloy C276, Stainless steel 316L
Sealing material	FPM, NBR, EPDM

Operating environment

Ambient temperature	−50…+85 °C
IP rating	IP66
Weight	0.6 kg

Certifications and approvals

Certifications

CERoHSEACNACENACE MR0175 / ISO 15156NACE MR0103 / ISO 17945

Explosion protection

Ex d I MbATEX: II 1/2 GD, II 2 GDIECEx: Ex d IIC T6/T4, Ex ta/tb IIIC T85°C/T135°C IP66, Ex d IIC T85°C/T135°C Gb, Ex tb IIIC T85°C/T135°C IP66 DbEACEx UkraineCCCKOSHAII 1/2 GDII 2 GD (version with sensor element 'P')Ex d IIC T6/T4 Ga/GbEx ta/tb IIIC T85°C/T135°C IP66 Da/DbEx d IIC T85°C/T135°C GbEx tb IIIC T85°C/T135°C IP66 Db (version with sensor element 'P')Ex d IIC T6/T5 GbEx tb IIIC T85/T135 Db IP66ATEXIECEx

Additional details

Datasheet languages

Tables from datasheet

Basic information

Version	Miniature pressure switch, flameproof enclosure Ex d
Special design feature	■ For oxygen, oil- and grease-free ■ Per NACE 1) MR0175 / ISO 15156, use in H₂S-containing environments in oil and gas production ■ Per NACE 1) MR0103 / ISO 17945, metals resistant to sulphide stress cracking ■ Drying of wetted parts ■ Offshore version ■ Tropical version (suitable for environments with increased air humidity) ■ Version for ammonia applications ■ Geothermal version ■ Assembled as a diaphragm seal system
Contact version	■ 1 x SPDT (single pole double throw) ■ 1 x DPDT (double pole double throw) Microswitch, hermetically sealed, with fixed dead band The DPDT function is realised with 2 simultaneously triggering SPDT microswitches. →See table 'Contact version'
Dielectric strength	Safety class I (IEC 61298-2: 2008)
Switch enclosure
Design	Tamper-proof due to access cover plate with lead seal option Laser-engraved product label from stainless steel
Material	Stainless steel 316

Contact version	Electrical rating (resistive load)
		AC	DC
E	1 x SPDT, silver, hermetically sealed	250 V, 5 A	24 V, 5 A
J	1 x SPDT, gold-plated, hermetically sealed	250 V, 0.5 A	24 V, 1 A
L	1 x DPDT, silver, hermetically sealed	250 V, 5 A	24 V, 5 A
M	1 x DPDT, gold-plated, hermetically sealed	250 V, 0.5 A	24 V, 1 A

Sensor element	Wetted parts	Permissible medium temperature 1)
		Sensor element	Sealing
M	1 = Welded diaphragm element with antagonist spring	Hastelloy C276	-	-40 ...+200 °C
	2 = Diaphragm element with antagonist spring and O-ring	Hastelloy C276	O-ring:FPM	-30 ...+200 °C
G	Piston with antagonist spring and welded diaphragm element	Hastelloy C276	-	-40 ...+140 °C
P	Piston with antagonist spring 2) 3)	Stainless steel 316L	O-ring:FPM	0 ... 200 °C
			O-ring:NBR	-10 ...+110 °C
			O-ring:EPDM	-40 ...+110 °C

Accuracy specifications

Set point repeatability	≤ 1 %of end of setting range
Dead band	→See table 'Setting range of set point'

View all (11)

Setting range of set point	Sensor element	Setting range depending on the switching direction in bar	Working range	Proof pressure	Max. dead band
	falling	Start of setting range 4)	End of setting range 4)
in bar -1 ... 1.5	M 5)	rising -0.7 ... 1.5	-0.9 ... 1.2	in bar -1 ... 10	in bar 40	in bar 0.3	in bar 0.3
1 ... 2.5 6)	M 5)	1.3 ... 2.5	1 ... 2.2	0 ... 10	16	0.3	0.3
1.6 ... 6	M 5)	2.1 ... 6	1.6 ... 5.8	0 ... 10	16	0.5	0.2
2 ... 6	M 7)	2.5 ... 6	2 ... 5.8	0 ... 207	315	0.5	0.2
3 ... 10	M 7)	4.5 ... 10	3 ... 9.2	0 ... 207	315	1.5	0.8
3 ... 10	M 5)	4.5 ... 10	3 ... 9.2	0 ... 10	16	1.5	0.8
6 ... 25 6)	M 5)	8 ... 25	6 ... 24.2	0 ... 25	40	2	0.8
6 ... 25	M 7)	8 ... 25	6 ... 24.2	0 ... 207	315	2	0.8
14 ... 60	P,G	23 ... 60	14 ... 49	0 ... 500	750	9	11
25 ... 100	P,G	40 ... 100	25 ... 82	0 ... 500	750	15	18
50 ... 160	P,G	65 ... 160	50 ... 142	0 ... 500	750	15	18
70 ... 400	P,G	95 ... 400	70 ... 365	0 ... 500	750	25	35
150 ... 700 8)	P	230 ... 700	150 ... 600	0 ... 1,000	1,500	80	100
200 ... 1,000 8)	P	300 ... 1,000	200 ... 850	0 ... 1,000	1,500	100	150

Process connection
Standard	■ ANSI/ASME B1.20.1 ■ DIN EN ISO 228
Size
ANSI/ASME B1.20.1	■ ¼NPT, female thread ■ ½NPT, female thread via adapter ■ ½NPT, male thread via adapter
DIN EN ISO 228	■ G¼, female thread via adapter ■ G½A,male thread via adapter ■ G¼A,male thread via adapter
Material (wetted)
Process connection	Stainless steel 316L
	Other materials on request
Sensor element	Depending on the selected sensor element →See table 'Sensor element'

Electrical connection

Connection type	■ Threaded connection with connection cable, ½NPTmale thread ■ Threaded connection with connection cable, M20 x 1.5 via adapter ■ Threaded connection with connection cable, ½NPTfemale thread via adapter ■ Threaded connection with connection cable, ¾NPTfemale thread via adapter ■ Terminal box, 3 x female thread ½NPT, IP65
Wire cross-section	0.5 mm² (20 AWG)
Cable length
Threaded connection with connection cable	■ 1.5m ■ 3m ■ 5m
Terminal box	-
Pin assignment	Connection details are given on the product label of the instrument. Connec- tion terminals and the ground terminal are appropriately marked.
Material
Threaded connection with connection cable	Threaded connection: Stainless steel 316 Cable sheath: Silicone
Terminal box	Aluminium alloy, copper-free, epoxy resin coated

Operating conditions

Medium temperature range	Depending on sensor element and sealing →See table 'Sensor element'
Ambient temperature range	T6/T85°C T a -50 ...+60 °C
	T4/T135°C T a -50 ...+85 °C
Ingress protection of the complete instrument	IP66 per EN/IEC 60529 (NEMA 4X)
Weight	■ 0.6 kg, with cable outlet and 1.5 mconnection cable ■ 1.1 kg, with terminal box

Logo	Description	Region
	EAC EMCdirective	Eurasian Economic Community
	Low voltage directive
	Ex Ukraine Hazardous areas 1)	Ukraine
	CCC Hazardous areas 1)	China
	KOSHA Hazardous areas 1)	South Korea

Certificates

Certificates	■ 2.2 test report per EN 10204 (e.g. state-of-the-art manufacturing, indication accuracy) ■ 3.1 inspection certificate per EN 10204 (e.g. indication accuracy)
Recommended recalibration interval	1 year (dependent on conditions of use)

Model		Description
	910.15	Syphons →see data sheet AC 09.06
	910.13	Overpressure protector →see data sheet AC 09.04
	IV10, IV11	Needle valve and multiport valve →see data sheet AC 09.22
	IV20, IV21	Block-and-bleed valve →see data sheet AC 09.19
	IVM	Monoflange, process and instrument version →see data sheet AC 09.17
	BV	Ball valve, process and instrument version →see data sheet AC 09.28