WIKA IS-20, IS-21 Data sheet

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Electronic Pressure Measurement

Intrinsically Safe Hazardous Area Transmitters Type IS-20, IS-21, IS-20-F, IS-21-F

Applications

■ Chemical, Petrochemical

■ Oil and gas rening

■ Food industry

■ Mechanical engineering

Special Features

■ Pressure ranges from 50 InWC to 15,000 psi

■ FM, CSA approval for

- Intrinsically safe Class I, II and III Division 1,

Group A, B, C, D, E, F, G

- Dust Class II and III Division 1, Group E, F, G

- Class I, Zone 0, AEx ia II C

■ Ex- protection EEx ia I/II C T6 according to ATEX for:

Gases, vapors and mist: Connection to Zone 0, Zone 1 and Zone 2 Dust: Connection to Zone 20, Zone 21 and Zone 22 Mining: Category M1 and M2 Suitable for SIL 2 according to IEC 61508 / IEC 61511

Left: IS-20-S standard version Center: IS-21-S with ush diaphragm Right: IS-20-F with integral junction box

Datasheet IS-20, IS-21

Description

Approvals meet international standards

The IS-20 series of intrinsically safe pressure transmitters are designed for industrial pressure measurement applications in hazardous areas where intrinsically safe ratings are required.

Multiple intrinsically safe approvals include FM, ATEX and CSA. These multiple approvals provide for global recognition and acceptance of the intrinsically safe ratings. The transmitters are labeled with all three approvals to help support international shipments of OEM equipment designed with these transmitters.

Rugged construction

The stainless steel wetted parts feature an all-welded measuring cell for improved media compatibility. There are no internal soft sealing materials that may react with the media or deteriorate over time. The compact case is also made of stainless steel and is available with environmental protection ratings up to NEMA 6 ( IP 68).

Datasheet IS-20, IS-21 · 1/2011

The IS-21-S and IS-21-F transmitters feature a ush diaphragm process connection. They are specically designed for the measurement of viscous uids or media containing solids that may clog a NPT process connection.

Types IS-20-F and IS-21-F feature an integral stainless steel junction box with internal terminal block for use in extremely harsh environments. A ½“ NPT female conduit connection is standard on all models and a cable compression electrical connection is available as an option.

All types require a 10 to 30 volt supply provided by an intrinsically safe power supply or through an approved intrinsically safe zener diode barrier.

Page 1 of 8

Specications Type IS-20-S, IS-21-S, IS-20-F, IS-21-F

Specications without type designation apply for all types.

Pressure range Maximum pressure* Burst pressure** Pressure range Maximum pressure* Burst pressure**

{vacuum, gauge pressure, compound ranges, and absolute pressure references are available}

Ranges only available with Type IS-20

For Type IS-21 the burst pressure is limited to 21,000 psi unless the pressure seal is accomplished by using the sealing ring underneath the hex.

*Pressure applied up to the maximum rating will cause no permanent change in specications but may lead to zero and span shifts

**Exceeding the burst pressure may result in destruction of the transmitter and possible loss of media

Materials

 Wetted parts

 Models IS-20-S, IS-20-F  Models IS-21-S, IS-21-F

 Case

Internal transmission uid

Power supply U Signal output and 4 ... 20 mA, 2-wire Maximum load R

 Models IS-20-S  Models IS-20-F

Test circuit signal / max. load R Adjustability zero/span % ± 5 using potentiometers inside the instrument Response time (10 ... 90 %) ms < 1 (< 10 ms at media temperatures below –22°F (-30°C) for ranges < 300 psi Power Pi W 1 (750 mW with approval for Category 1D) Isolation voltage Isolation complies with EN 50020, 79-11 Accuracy

Non-linearity % of span ≤ 0.2 (BFSL) according to IEC 61298-2 Non-repeatability % of span ≤ 0.1 1-year stability % of span ≤ 0.2 (at reference conditions) Permissible temperature

 Medium

 Ambient  Storage

7) 8)

Compensated temperature range 32 ... +176°F 0 ... +80°C Temperature coecients (TC) within compensated temperature range:

 Mean TC of zero % of span

 Mean TC of range % of span ≤ 0.2 / 10 K

CE-conformity

 Pressure equipment directive 97/23/EC

 EMC directive

50 InWC 5 psi 10 psi 25 psi 30 psi 60 psi 100 psi 160 psi 200 psi 15 psi 29 psi 58 psi 145 psi 145 psi 240 psi 500 psi 1,160 psi 1,160 psi 29 psi 35 psi 69 psi 170 psi 170 psi 290 psi 600 psi 1,390 psi 1,390 psi 300 psi 500 psi 1,000 psi 2,000 psi 3,000 psi 5,000 psi 8,000 psi 10,000 psi 1,160 psi 1,160 psi 1,740 psi 4,600 psi 7,200 psi 11,600 psi 17,400 psi 17,400 psi 21,750 psi 1,390 psi 5,800 psi 7,970 psi 14,500 psi 17,400 psi 24,650 psi

34,800 psi234,800 psi 43,500 psi

(for other materials see WIKA diaphragm seal program) Stainless steel Stainless steel {Hastelloy

C4}

O-ring: NBR {Viton® or EPDM}

Not available with Type IS-20 in pressure ranges > 300 psi

Media temperature for oxygen version: -4 ... +140 °CF (-20 ... +60 °C). Not available in vacuum

or absolute pressure ranges or in Type IS-21 ush diaphragm version > 500 psi

DC V 10 < U ≤B 30 (11 < UB < 30 with Type IS-20 -F)

% of span ≤ 0.25 {0.125} % of span ≤ 0.5 {0.25}

Including non-linearity, hysteresis and repeatability.

Limit point Calibration performed in vertical mounting position with pressure connection facing down.

For pressure ranges above 100 InWC

-20 ... +80 °C

Other temperature ranges are possible, depending on the electrical connection; see EC-type

Also complies with EN 50178, Tab. 7, Type C, Class 4KH Operation, 1K4 Storage, 1K3 Transport

Response time for IS-20: < 10 ms at medium temp. below -30 °C (-22 °F) for pressure ranges up to 300 psi

Response time for IS-21: < 10 ms at medium temp. below -30 °C (-22 °F) for all pressure ranges

Stainless steel Synthetic oil {Halocarbon® oil for oxygen applications} 4) {Listed by FDA for food applications}

≤ (UB – 10 V) / 0.02 A – (length of cable in feet x 0.043 Ohm)

≤ (UB – 11 V) / 0.02 A

in Ohms and UB in Volts

with R

RA < 15 Ohm (only for Type IS-20 -F)

(BFSL)

(limit point calibration)

{extended temperature ranges see page 6}

-4 ... +176 °F

-30 ... +105 °C -22 ... +221 °F

≤ 0.2 / 10 K

(< 0.4 for pressure range < 100 InWC)

2004/108/EC, EN 61 326 Emission (Group 1, Class B) and Immunity (industrial locations)

15,000 psi

Page 2 of 8 Datasheet IS-20, IS-21 · 1/2011

Specications Type IS-20-S, IS-21-S, IS-20-F, IS-21-F

■

Directive ATEX of equipment intended for use in potentially 94/9/EC explosive atmospheres

Ex-protection ATEX Category

Ignition protection type Ex ia I/II C T4, Ex ia I/II C T5, Ex ia I/II C T6

Ex-protection FM, CSA Class I, II and III

Ignition protection type Intrinsic safe Class I, II, III Division 1,

HF-immunity V/m 10

Burst kV 2

Functional safety Suitable for SIL 2 applications according to IEC 61508/ IEC 61511

Shock resistance

» Type IS-2X-S g 1,000 according to IEC 60068-2-27 (mechanical shock)

» Type IS-2X-F g 600 according to IEC 60068-2-27 (mechanical shock)

Vibration resistance

» Type IS-2X-S g 20 according to IEC 60068-2-6 (vibration under resonance)

» Type IS-2X-F g 10 according to IEC 60068-2-6 (vibration under resonance)

Wiring protection

■

Short-circuit Sig+ towards UB-

■

Reverse polarity UB+ towards UB-

Weight  Type IS-2X-S

 Type IS-2X-F

*) In an oxygen version type IS-21 is not available. In an oxygen version type IS-20 is only available in gauge pressure ranges ≥ 0.25 bar with media temperatures between

-20 … +60 °C / -4 … +140 °F and using stainless steel or Elgiloy® wetted parts. { } Items in curved brackets are optional extras for additional price.

Read the operating conditions and safety-relevant data in the EC-type examination

certicate in any case (BVS 04 ATEX E 068 X)

Group A, B, C, D, E, F, G and Class I, Zone 0 AEx ia II C

Further information: "Additional Instructions Safety-related data IS-2X SIL"

lb Approx. 0.45

lb Approx. 0.80

1G, 1/2G, 2G, 1D, 1/2D, 2D, M1, M2

Output signal and permissible load

Type IS-2X-S

4 ... 20 mA, 2-wire

Type IS-2X-F

4 ... 20 mA, 2-wire

permissible range

Supply Voltage

Output current (2-wire) Output current (2-wire)

4 ... 20 mA: RA < (UB – 10 V) / 0.02 A 4 ... 20 mA: RA < (UB – 11 V) / 0.02 A

Datasheet IS-20, IS-21 · 1/2011 Page 3 of 8

Dimensions in inches (mm)

IS-2X-S (electrical connections)

Ingress Protection IP per IEC 60 529

L-connector plug DIN EN 175301-803, Form A ½ NPT conduit IP 65 Order code: AX ATEX: 1/2 G, M1

Circular connector, M 12x1, 4-pin IP 67 Order code: M4 ATEX: 1/2 G, M1

Cable with free ends outer conductor diameter 6.8 mm, PUR NEMA 4 / IP 67 Order code: DL ATEX: 1/2 G, M1

Bayonet connector 6-pin NEMA 4 / IP 67 Order code: C6 ATEX: 1/2 G (not available with mining approval)

1.77“ (45mm)

1.14“ (29mm)

1.69“ (43mm)

Case

Pressure connections IS-20-S and IS-20-F

1/ 2 NPT male Order code: ND

1/4 NPT male Order code: NB

)

2.56“ (65mm)

1.36“ (34.5mm)

1.06“

(27mm)

G 1/2 metric EN 837 Order code: GD

.71” 18mm)

1.73” 44mm)

G 1/4 metric EN 837 Order code: GB

)

.75”

(19mm)

1.08”(27.5mm) 1/2NPT

.51”(13mm)

.85”(21.5mm)

1.12”(28.5mm)

.79”(20mm)

.12”(3mm)

.24”

(6mm)

.69”

(17.5mm)

.85”(21.5mm)

Datasheet IS-20, IS-21 · 1/2011Page 4 of 8

.08”(2mm)

.51”(13mm)

.08”(2mm)

.20”

(5mm)

.37”

(9.5mm)

Electrical connections IS-2X-S

Cable with free ends, zero/span not adjustable, conductor outer diameter 6.8 mm, PUR IP 68/NEMA 6 Order code: EM

ATEX: 1/2 G, M1

Electrical connections IS-2X-F

Integral junction box with internal spring clip terminals NEMA 4X IP 67 Order code: FE (1/2“ NPT female conduit standard) FH (threaded connection brass nickel-plated) FC (threaded connection stainless steel)

ATEX: 1/2 G, M1

3.35”(85mm)

1.89”(48mm)

2.41”(61mm)

Electrical connections IS-2X

-S

Cable with free ends, zero/span not adjustable, conductor outer diameter 7.5 mm, PUR {FEP} NEMA 6P / IP 68 Order code: DM

ATEX: 1G, 1D, M1

1.00”(25.5mm)

Other connections available

2.60”(66mm)

1.24”(31.5mm)

1/2” NPT female conduit

Case dimensions

2.13”(54mm)

1.06”(27mm)

IS-21-S and IS-21-F ush diaphragm pressure connections

G 1 50 InWC to 25 psi Order code: 85

1.26”(31.9mm)

.81”(20.5mm)

.39”(10mm)

Sealing ring

29.7x35.7x2.0

O-ring 26x2

G 1/2 30 psi to 8,000 psi Order code: 86

1.22”(31mm) .81”(20.5mm)

.39”(10mm)

Sealing ring

18.5x23.9x1.5

O-ring 15x2

4.41”(112mm)

G 1 according to EHEDG **) 100 InWC to 250 psi Order code: 83

1.52”(38.5mm) .98”(25mm)

1.06”(27mm)

Sealing ring

29.7x35.7x2.0

O-ring 21.82x3.53

Matching P-1 weld insert adapters for IS-21-S and IS-21-F transmitters

P-1 G1 weld insert adapter

Part # 1206974

for pressure ranges < 25 psi

**) European Hygienic Equipment Design Group

{ } Items in curved brackets are optional extras at additional cost.

P-1 G1/2 weld insert adapter

Part # 1097008

for pressure ranges > 30 psi

weld

Cross section view of P-1 adapter installed in pipe.

Page 5 of 8Datasheet IS-20, IS-21 · 1/2011

Pressure connections for high temperature media

IS-21-S and IS-21-F, ush diaphragm

-4 °F to 302 °F (-20 °C to 150 °C)

G 1/2 with 2 cooling ns (version A ) 0 ... 30 psi up to 0 ... 8000 psi Order code: 86 and C

sealing ring 18,5x23,9x1,5

1.79”(45.5mm)

1.22”(30.9mm) .81”(20.5mm)

.39”(10mm)

O-ring 15.0x2,0

Relationship of media temperature to ambient temperature

IS-20-S and IS-20-F

-40 °F to 302 °F (-40 °C to 150 °C)

1/2 NPT male with 3 cooling ns (version B ) 0 - 5 psi to 0-15,000 psi Order code: ND and 8

3.27”(83mm)

.75”(19mm)

IS-20-S and IS-20-F

-40 °F to 392 °F (-40 °C to 200 °C)

1/2 NPT male with 5 cooling ns (version C ) 0-5 psi to 0-15,000 psi Order code: ND and 9

3.66”(93mm)

.75”(19mm)

Ambient Temperature in °C

Media Temperature in °C

Version

Cooling ns 2 3 5

K * 0.47 0.68 0.76

*cooling constant specic to each version

Calculation of cooling element performance: TB = T TB = Operating temperature of transmitter T T K = Constant of cooling element

- (T

med

= maximum temperature of process media

med

= maximum ambient temperature

amb

A C

- T

) x K

amb

Maximum permissible ambient temperature: T

= T

amb

+ (TB - T

med

) / K

Datasheet IS-20, IS-21 · 1/2011Page 6 of 8

Permissible temperature ranges depending on electrical connections

Electrical connections

DIN 175301-803 A L-Connector

M 12x1 Circular connector M4 1/2 G (IIC)

Cable DL 1/2 G (IIC)

Bayonet connector (not with mining)

Cable zero/span not adjustable

Fieldcase

PUR Cable zero/span not adjustable

FEP Cable zero/span not adjustable

Ordercode

A4 1/2 G (IIC)

C6 1/2 G (IIC)

EM 1/2 G (IIC)

FE, FH, FC 1/2 G (IIC)

DM 1 G (IIA), 1/2 G (IIC)

Category

M1 -40 ... +221 °F -40 ... +105 °C

M1 -13 ... +194 °F -25 ... +90 °C

M1 -4 ... +140 °F -20 ... +60 °C

M1 -4 ... +176 °F -20 ... +80 °C

M1 -58 ... +221 °F (T4) -50 ... +105 °C (T4)

1D, M1 14 ... +140 °F -10 ... +60 °C

1D -22 ... +140 °F -30 ... +60 °C

M1 -22 ... +221 °F -30 ... +105 °C

Ambient/Medium temperature range

-40 ... +140 °F (T6)

-40 ... +176 °F (T5)

-40 ... +221 °F (T4)

-13 ... +140 °F (T6)

-13 ... +176 °F (T5)

-13 ... +194 °F (T4)

-4 ... +140 °F (T6)

-4 ... +176 °F (T5)

-4 ... +176 °F (T4)

-58 ... +140 °F (T6)

-58 ... +176 °F (T5)

-58 ... +221 °F (T4)

-4 ... +140 °F (T6)

-4 ... +176 °F (T5)

-4 ... +176 °F (T4)

-58 ... +140 °F (T6)

-58 ... +176 °F (T5)

-58 ... +221 °F (T4

14 ... +140 °F (T6) 14 ... +140 °F (T5) 14 ... +140 °F (T4)

-22 ... +140 °F (T6)

-22 ... +176 °F (T5)

-22 ... +221 °F (T4)

-40 ... +60 °C (T6)

-40 ... +80 °C (T5)

-40 ... +105 °C (T4)

-25 ... +60 °C (T6)

-25 ... +80 °C (T5)

-25 ... +90 °C (T4)

-20 ... +60 °C (T6)

-20 ... +80 °C (T5)

-20 ... +80 °C (T4)

-50 ... +60 °C (T6)

-50 ... +80 °C (T5)

-50 ... +105 °C (T4)

-20 ... +60 °C (T6)

-20 ... +80 °C (T5)

-20 ... +80 °C (T4)

-50 ... +60 °C (T6)

-50 ... +80 °C (T5)

-50 ... +105 °C (T4

-10 ... +60 °C (T6)

-10 ... +60 °C (T5)

-10 ... +60 °C (T4)

-30 ... +60 °C (T6)

-30 ... +80 °C (T5)

-30 ... +105 °C (T4)

Wiring details

L-connector DIN 175301-803 A

2-wire U+ = 1 U- = 2 U+ = 1 U- = 3 U+ = brown U- = green

Cable screen

Wire gauge up to max.1.5 mm

Cable diameter

Ingress protection according to IEC 60 529

2-wire U+ = A U- = B U+ = 1 U- = 2 Test+ = 3 Test- = 4 screen = 5 Cable diameter 7-13 mm

Ingress protection according to IEC 60 529

6-8 mm ship approval: 10-14 mm

IP 65 IP 67

The ingress protection classes specied only apply while the pressure transmitter is connected with female connectors that provide the corresponding ingress protection.

Bayonet connector, 6 pin Field case (with internal spring clip terminals)

IP 67 IP 67

The ingress protection classes specied only apply while the pressure transmitter is connected with female connectors that provide the corresponding ingress protection.

Circular connector M12x1, 4 pin

- 0.5 mm2 (AWG 20)

Cable,

1.5 m

PUR-cable: grey FEP-cable: twisted and tinned

6.8 mm (Order code: DL / EM)

7.5 mm (Order code DM) IP 67 - Order code: DL

IP 68 zero/span not adjustable - Order code: EM / DM

Page 7 of 8Datasheet IS-20, IS-21 · 1/2011

Hazardous areas (ATEX zone classications)

Group II: Electrical equipment for use in all areas (except mines) which are endangered by an explosive atmosphere.

Zone Category Occurrence of explosive atmosphere

Zone 0 Category 1G (gas)

Mounting to zone 0 Category 1/2 G

Zone 20 Category 1D (dust)

Mounting to zone 20 Category 1/2 D

Zone 1 Category 2G

Zone 21 Category 2D

Zone 2 Category 3G

Zone 22 Category 3D

Continuous

Intermittent

Hazard under abnormal conditions

Group I: Electrical equipment for use in mines (hazard due to mine gas)

Zone Category Requirements

Category M 1 Very high degree of safety

Category M 2

High degree of safety (instruments have to be turned o if they are exposed to an explosive atmosphere)

Hazardous areas (ATEX in comparison with FM, CSA)

ATEX FM / CSA

Group Class Group

Gases and Vapors IIA / IIB / IIC I

Above ground

Mining Gas / Dusts I ID / IIF

ATEX Zone 0 (Zone 20 Dust) Zone 1 (Zone 21 Dust) Zone 2 (Zone 22 Dust)

FM /CSA Zone 0 Zone 1 Zone 2

FM (NEC505) Zone 0 Zone 1 Zone 2

The specications given in this document represent the state of engineering at the time of publishing.

e reserve the right to make modications to the specications and materials.

Flammable material present continuously

Dusts II

Fibers III

Flammable material present intermittently

Division 1 Division 2

A / B / C / D / E / F / G

Flammable material normally not present

Page 8 of 8

Specications and dimensions given in this data sheet represent the state of engineering at the time of printing. Modications may take place and materials specied may be replaced by others without prior notice.

Datasheet IS-20, IS-21 · 1/2011

WIKA Instrument Corporation

1000 Wiegand Boulevard Lawrenceville, GA 30043 1-888-WIKA-USA /770-513-8200 (in GA) Fax 770-338-5118 info@wika.com www.wika.com

WIKA IS-20, IS-21 Data sheet

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