Differential pressure switch

Name: Differential pressure switch
Brand: WIKA

Differential pressure switch with flameproof enclosure Ex d for safety-critical applications in chemical, petrochemical, oil and gas industries, power generation, water/wastewater, and mining. Suitable for gaseous, liquid, and aggressive media.

Range

-12.5…40 bar

Accuracy

≤ 1 % of span

Protection

IP66

CERoHSATEXIECExEACEx-UkraineCCCKOSHAINMETROEx d IIC T6/T4 Ga/GbEx ta/tb IIIC T85/T135 Da/Db

Price

On request

Depends on configuration

Request a quote

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

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.

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.

Special features

No power supply needed for switching of electrical loads
Robust switch enclosure from aluminium alloy, IP66, NEMA 4X
Setting ranges from 0 ... 16 mbar to 0 ... 40 bar with high static and high one-sided pressure up to 160 bar
Repeatability: ≤ 1 % of span
1 or 2 independent set points, SPDT or DPDT, high switching power up to AC 250 V, 20 A

Identification

Model	DA, DA10
Product family	DA
Subcategory	Differential pressure switch

Measuring range

Pressure ranges

0…0.16 bar · 0…0.25 bar · 0…0.4 bar · 0…0.6 bar · 0…1 bar · 0…2.5 bar · 0…4 bar · 0…6 bar · 0…10 bar · 0…16 bar · 0…25 bar · 0…40 bar · 0…16 mbar · 0…25 mbar · 0…40 mbar · 0…60 mbar · -0.04…0.12 bar · -0.06…0.19 bar · -0.2…0.2 bar · -0.3…0.3 bar · -0.5…0.5 bar · -1.25…1.25 bar · -2…2 bar · -3…3 bar · -5…5 bar · -8…8 bar · -12.5…12.5 bar

Accuracy

Accuracy class	≤ 1 % of span
Accuracy standard	IEC 61298-2:2008
Safety integrity level (SIL)	SIL 2 per IEC 61508

Process conditions

Process connection	¼ NPT female½ NPT maleG ½ A maleG ¼ A male½ NPT femaleG ¼ femaleM20 x 1.5 male
Process temperature	−30…+85 °C

Electrical characteristics

Electrical connection	½ NPT female
Switching function	SPDT or DPDT
Switching contacts	2

Materials

Case material	Aluminium alloy, copper-free, epoxy resin coated
Wetted parts material	AISI 316, AISI 316L, AISI 304, Monel 400, Inconel 718
Sealing material	NBR

Operating environment

Ambient temperature	−30…+85 °C
IP rating	IP66
Weight	7.2 kg

Certifications and approvals

Certifications	CERoHSATEXIECExEACEx-UkraineCCCKOSHAINMETRO
Explosion protection	Ex d IIC T6/T4 Ga/GbEx ta/tb IIIC T85/T135 Da/Db

Tables from datasheet

Contact version	Electrical rating (resistive load)
		AC	DC
UN	1 x SPDT, silver	250 V, 15 A	24 V, 2 A, 125 V, 0.5 A, 220 V, 0.25 A
US	1 x SPDT, silver, hermetically sealed, argon gas filling 2)	250 V, 15 A	24 V, 2 A, 220 V, 0.5 A
UO	1 x SPDT, gold-plated, hermetically sealed, argon gas filling 2)	125 V, 1 A	24 V, 0.5 A
UG	1 x SPDT, gold-plated	125 V, 1 A	24 V, 0.5 A
UR	1 x SPDT, silver, adjustable dead band	250 V, 20 A	24 V, 2 A, 220 V, 0.5 A
DN	2 x SPDT or 1 x DPDT, silver	250 V, 15 A	24 V, 2 A, 125 V, 0.5 A, 220 V, 0.25 A
DS	2 x SPDT or 1 x DPDT, silver, hermetically sealed, argon gas filling 2)	250 V, 15 A	24 V, 2 A, 220 V, 0.5 A
DO	2 x SPDT, or 1 x DPDT gold-plated, hermetically sealed, argon gas filling 2)	125 V, 1 A	24 V, 0.5 A
DG	2 x SPDT or 1 x DPDT, gold-plated	125 V, 1 A	24 V, 0.5 A

Setting range	Stainless steel version	NACE 1) version	Monel version
Diaphragm	Process connection	Diaphragm	Process connection	Diaphragm	Process connection
16 mbar	AISI 316	AISI 316L	-	-	-
25 mbar
40 mbar
60 mbar
160 mbar			Monel ® 400	AISI 316L	Monel ® 400
250 mbar
400 mbar
600 mbar
1 bar
2.5 bar
4 bar	AISI 304
6 bar
10 bar
16 bar	Inconel ® 718		Inconel ® 718		-
25 bar
40 bar

Δp-cell	Setting range	Fixed dead band for contact version	Adjustable dead band for contact version	Static / One-sided pressure
in bar	1 contact UN, US, UO, UG in mbar	2 contacts DN, DS, DO, DG in mbar	1 contact UR in mbar	in bar
L	0 ... 0.16	≤ 6	≤ 6	25 ... 60	≤ 40, ≤ 100 or ≤ 160
0 ...0.25	≤ 8	≤ 8	30 ... 80
-	0 ... 0.4	≤ 20	≤ 20	45 ... 120
0 ... 0.6	≤ 25	≤ 25	80 ... 200
0 ... 1	≤ 40	≤ 40	100 ... 270
0 ... 2.5	≤ 70	≤ 70	260 ... 700
0 ... 4	≤ 120	≤ 120	450 ... 1,150
0 ... 6	≤ 180	≤ 180	600 ... 1,600
0 ... 10	≤ 300	≤ 300	1,100 ... 2,800
0 ... 16	≤ 480	≤ 480	1,600 ... 3,500
0 ... 25	≤ 700	≤ 700	2,500 ... 5,500
V	0 ... 40	≤ 1,200	≤ 1,200	on request

Δp-cell	Setting range	Fixed dead band for contact version	Adjustable dead band for contact version	Static / One-sided pressure
	in mbar	1 contact UN, US, UO, UG in mbar	2 contacts DN, DS, DO, DG in mbar	1 contact UR in mbar	in bar
-	0 ... 16	≤ 1.2	≤ 1.6	-	≤ 10 2)
	0 ... 25	≤ 1.2	≤ 1.6	4 ... 10	≤ 10
	0 ... 40	≤ 1.6	≤ 2.2	5 ... 14
	0 ... 60	≤ 2.5	≤ 3.0	6 ... 18

View all (5)

Logo	Description	Country
	EU declaration of conformity ■ Pressure equipment directive ■ Low voltage directive ■ RoHS directive ■ ATEX directive 1) II 1/2GD	European Community
	IECEx 1) Ex d IIC T6/T4 2) Ga/Gb Ex d IIIC T85/T135 2) Da/Db	IECEx member states
	EAC (option) Hazardous areas	Eurasian Economic Community
	Ex-Ukraine (option) Hazardous areas	Ukraine
	CCC (option) Hazardous areas	China
	KOSHA (option) Hazardous areas	South Korea
	INMETRO ■ Metrology, measurement technology ■ Hazardous areas	Brazil