Diaphragm monitoring system with flange connection

Name: Diaphragm monitoring system with flange connection
Brand: WIKA

For the chemical and petrochemical industries

Range

-1…40 bar

Output

PROFIBUS PA · 4-20 mA

Accuracy

≤ 0.1 % of span

Protection

IP65

NACE MR 1705NACE MR 103EN 10204 2.2EN 10204 3.1

Price

On request

Depends on configuration

Request a quote

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Description

The WIKA combination of diaphragm seal, pressure measuring instrument and monitoring element is ideally suited for the harshest measuring tasks. The system can withstand aggressive or hot media.

The patented diaphragm monitoring has been designed specifically for the highest safety requirements in the chemical and petrochemical industries.

On the double-diaphragm system a second, internal diaphragm in the pressure measuring instrument ensures the reliable separation of the environment and the process in the event of a diaphragm rupture. The measuring function of the overall system remains unrestricted, nevertheless it must be replaced immediately.

Special features

Double-diaphragm system to ensure the separation of the process and the pressure measuring instrument
Process connection with flange to provide for direct threaded connection
All welded design with flush diaphragm
Wetted parts from Hastelloy

Identification

Model	DMS27
Product family	DMS
Subcategory	Diaphragm monitoring system

Measuring range

Pressure ranges

0…2.5 bar · 0…4 bar · 0…6 bar · 0…10 bar · 0…16 bar · 0…25 bar · -1…1.6 bar · -1…3 bar · -1…5 bar · -1…10 bar · -1…15 bar · 0…40 bar · -1…25 bar

Accuracy

Accuracy class	≤ 0.1 % of span
Accuracy standard	IEC 61298-2
Safety integrity level (SIL)	SIL qualified (option for IPT-20)

Process conditions

Process connection	Flange connection DN 2" Class 150, ASME B16.5Flange DN 2" Class 150 ASME B16.5
Process temperature	−10…+120 °C

Electrical characteristics

Output signal	PROFIBUS PA · 4-20 mA · HART · FOUNDATION Fieldbus · FOUNDATION™ Fieldbus · 4-20mA with HART
Power supply	DC 10 ... 30 V
Electrical connection	Angular connector DIN EN 175301-803 A

Materials

Case material	Stainless steel 316L/1.4404, Stainless steel, Aluminium die-casting AlSi10Mg, PA 6, Aluminium die-casting AlSi10Mg, powder-coated, Aluminium die-casting AlSi10Mg, powder-coated on PE basis
Wetted parts material	Hastelloy C276 2.4819; UNS N10276
Sealing material	PA 6

Operating environment

Ambient temperature	+10…+40 °C
IP rating	IP65

Certifications and approvals

Certifications

NACE MR 1705NACE MR 103EN 10204 2.2EN 10204 3.1

Additional details

Datasheet languages

Tables from datasheet

Diaphragm seal system

Design	Process transmitter mounted to a diaphragm seal with flange connection, welded
Measuring range
Gauge pressure	0 ... 2.5 bar [0 ... 40 psi] 0 ... 4 bar [0 ... 60 psi] 0 ... 6 bar [0 ... 100 psi] 0 ... 10 bar [0 ... 150 psi] 0 ... 16 bar [0 ... 250 psi] 0 ... 25 bar [0 ... 400 psi] 0 ... 40 bar [0 ... 600 psi] -1 ... +1.6 bar [-30 inHg ...+25 psi] -1 ...+3 bar [-30 inHg ...+45 psi]
Vacuum 1)	-1 ...+5 bar [-30 inHg ...+70 psi] -1 ...+10 bar [-30 inHg ...+145 psi] -1 ...+15 bar [-30 inHg ...+220 psi] -1 ...+25 bar [-30 inHg ...+360 psi] -10 ...+120 °C [-50 ...+248 °F] 10 ... 40 °C [50 ... 104 °F]
Permissible temperature range Medium Ambient Storage	10 ... 60 °C [50 ... 140 °F]
Ingress protection per IEC/EN 60529	IP65
Material 2) wetted	Diaphragm: Hastelloy C276 2.4819;UNS N10276 Diaphragm seal: Hastelloy C276 2.4819;UNS N10276
Mounting type	Direct mounting
Level of cleanliness of wetted parts	Oil and grease free per ASTM G93-03 level FWIKA standard (< 1,000 mg/m²)
System fill fluid	KN 21 halocarbon

Monitoring element 3)	Absolute pressure sensor (Model IS-3)
Current output	4 ... 20 mA(2-Leiter)
Signal behaviour	0 bar abs. →Outer diaphragm intact Signal:4mA ≥ 0,8 bar abs. →Outer diaphragm defective Signal: > 4 mA(depending on the pressure measuring range of the absolute pressure sensor)
Power supply	DC 10 ...30V
Permissible load in Ω	≤ (power supply - 10 V) / 0.02 A - (cable length in mx0.14 Ω)
Material Case Wetted parts 4) Angular connector DIN EN 175301-803 A	Stainless steel Hastelloy PA6
Ingress protection per IEC/EN 60529	IP65

Pressure measuring instrument: Process transmitter model IPT-20

Output signal	4 ...20mA 4 ... 20 mAwith a superimposed HART ® communication signal (option: SIL qualification) HART ® specification: 7.3 FOUNDATION™ Fieldbus PROFIBUS ® PA
Load in Ω	(U B - U Bmin ) / 0.023 A U B = Applied power supply (see table 'Power supply') U Bmin = Minimum power supply (see table 'Power supply')
Accuracy at room temperature 1)	Measuring ranges ≤ 40 bar: ≤ 0.1 %of span
Material (non-wetted) Case Sensor	Double chamber case, aluminium die-casting AlSi10Mg, powder-coated on PE basis Stainless steel 316L/1.4404
Display	LC display with backlighting, can be fitted on the top or on the side
Ingress protection per IEC/EN 60529	IP66 / IP67