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6

EN-DFA Series

North America 

Only

Table 6. 

Temperature Sensor Safety Specifications

TECHNICAL DATA

THERMOCOUPLE

Design Type

Standard

 with thermowell

Standard

 without thermowell

Model

185 03J1

Code 0185 thermocouple (IEC 584 Class 1) without thermowell

Manufacturer

Emerson Rosemount

Emerson Rosemount

EC-Type Approval Certificate

FM12ATEX0065X

ATEX:  EN 60079-0:2012+A11:2013; EN 60079-1: 2014

FM12ATEX0065X

ATEX:  EN 60079-0:2012+A11:2013; EN 60079-1: 2014

Temperature Sensor Design

Type-K thermocouple

Type-K thermocouple

Type of Ignition Protection

II 2 G Ex d IIC T6...T1 Gb, T6(–50°C ≤ Ta ≤ + 40°C), T5...

 

T1 (–50°C ≤ Ta ≤ + 60°C)

II 2 G Ex d IIC T6...T1 Gb, T6(–50°C ≤ Ta ≤ + 40°C), T5...

 

T1 (–50°C ≤ Ta ≤ + 60°C)

Protection Type (Connection Head)

Rosemount Aluminum

Explosion proof, 2-wire, 3-wire, 4-wire type A, 4-Wire type as specified 

by customer

Intrinsically safe option is available

Rosemount Aluminum

Explosion proof, 2-wire, 3-wire, 4-wire type A, 4-Wire type as specified 

by customer

Intrinsically safe option is available

Measuring Probe (Measuring Insert)

1/2 MPT or optional M24 x1.5. Intended for installation into thermowell.

1/2 MPT. Intended for installation without thermowell.

Connection Thread

1/2 MPT. Intended for installation into thermowell

1/2 MPT. Intended for installation without thermowell.

Transmitter

Optional by customer request

Optional by customer request

Intended Application

In-line flame arrestors and detonation arrestors

End-of-line flame arrestors. Free-vent style.

TECHNICAL DATA

THERMOCOUPLE

Design Type

Standard

 with thermowell

Standard

 without thermowell

Model

TC 10-2 (for additional Thermowell)

TC10-H (threaded for direct insertion without thermowell)

Manufacturer

WIKA

WIKA

EC-Type Approval Certificate

ATEX and IECEx certifications

ATEX and IECEx certifications

Temperature Sensor Design

Type-K thermocouple

Type-K thermocouple

Type of Ignition Protection

II 2 G Ex d IIC T6...T1 Gb, T6(–50°C ≤ Ta ≤ + 40°C), T5...

 

T1 (–50°C ≤ Ta ≤ + 60°C)

II 2 G Ex d IIC T6...T1 Gb, T6(–50°C ≤ Ta ≤ + 40°C), T5...

 

T1 (–50°C ≤ Ta ≤ + 60 °C)

Protection Type (Connection Head)

Explosion proof, 2-wire, 3-wire, 4-wire type A, 4-Wire type as specified 

by customer.

Intrinsically safe option is available .

Explosion proof, 2-wire, 3-wire, 4-wire type A, 4-Wire type as specified 

by customer.

Intrinsically safe option is available.

Measuring Probe (Measuring Insert)

Spring loaded plate

Probe allows use of transmitter. 

Length varies by flame arrestor size.

Probe length varies by flame arrestor size. 

Adjustable insertion length.

Connection Thread

1/2 MPT or optional M24 x1.5. Intended for installation into thermowell.

1/2 MPT. Intended for installation without thermowell.

Transmitter

Optional by customer request

Optional by customer request

Intended Application

In-line flame arrestors and detonation arrestors

End-of-line flame arrestors. Free-vent style.

Table 7. 

Torque Values for Raised Face Connection Flange (Steel Only)

NOMINAL PIPE DIAMETER

NUMBER OF BOLTS

BOLT DIAMETER

TORQUE

In.

mm

Ft-lb

N•m

1

4

0.50

12.70

9

12.20

1-1/4 

4

0.50

12.70

13

17.63

1-1/2 

4

0.50

12.70

18

24.40

2

4

0.63

16.00

35

47.45

2-1/2 

4

0.63

16.00

41

55.59

3

4

0.63

16.00

60

81.35

3-1/2 

8

0.63

16.00

34

46.10

4

8

0.63

16.00

43

58.30

6

8

0.75

19.05

80

108.5

8

8

0.75

19.05

109

147.8

10

12

0.88

22.4

101

136.9

12

12

0.88

22.4

135

183.0

Assumptions: Use of SAE grade 5 bolts or studs or stronger

No lubricant

Compressed mineral fiber material or similar

Notes: If lubricant is used on bolts, apply torque reduction factor listed in Lubricant Table. For best results hardened steel washers should be used on all cast flange bolted connections.

Summary of Contents for EN-DFA Series

Page 1: ... 2 Specifications 2 Principle of Operation 3 Factors Affecting Flame Arrestor Performance 5 Installation 8 Maintenance 10 Recommended Spare Parts 12 Parts Ordering 12 EN DFA Series Detonation Flame Arrestor EN ISO 16852 Certified February 2021 Instruction Manual D103585X012 Introduction Scope of the Manual This Instruction Manual provides instructions for installation startup maintenance and parts...

Page 2: ...sents the best value in flame arrestor protection The detonation flame arrestor provides protection against flame propagation in piping systems that are manifolded or have long run up distances These are typically used for extended pipe length or multiple pipe bend configurations to stop high pressures and flame velocities with detonations and overdriven detonations It also stops confined and unco...

Page 3: ...Measures Flame arrestors may be used with additional protection measures The overall safety of the combined installation shall be accessed taking account of any hazardous area classification zones and the likelihood of additional ignition sources Factors Affecting Flame Arrestor Performance Gas Group The type of gas in the system determines its gas grouping and therefore predetermines the type of ...

Page 4: ...ISO 16852 2016 DET 2 Lu D n a BC b tBT 1 min Ex G IIA To 60 C Po 116 3 kPa absolute WARNING Flame Arrestors have installation and application limits Type designation in accordance with EN ISO 16852 2016 DET 2 Lu D n a BC b tBT 1 min Ex G IIB3 To 60 C Po 118 3 kPa absolute WARNING LABEL OF EN DFA 0402 IIA THROUGH EN DFA 1206 IIA SEE TABLE 2 WARNING LABEL OF EN DFA 1608 IIA THROUGH EN DFA 2412 IIA S...

Page 5: ...restor and pipe diameter It indicates unlimited BC b Indicates the flame arrestor is for short time burning not to exceed 1 minute Ex G IIA Indicates the arrestor is rated for use in Explosion Group IIA vapors Ex G IIB3 Indicates the arrestor is rated for use in Explosion Group IIB3 vapors To Indicates maximum operational temperature of flame arrestor Po Indicates maximum operational pressure of f...

Page 6: ...A EC Type Approval Certificate ATEX and IECEx certifications ATEX and IECEx certifications Temperature Sensor Design Type K thermocouple Type K thermocouple Type of Ignition Protection II 2 G Ex d IIC T6 T1 Gb T6 50 C Ta 40 C T5 T1 50 C Ta 60 C II 2 G Ex d IIC T6 T1 Gb T6 50 C Ta 40 C T5 T1 50 C Ta 60 C Protection Type Connection Head Explosion proof 2 wire 3 wire 4 wire type A 4 Wire type as spec...

Page 7: ... arrestor end sections or shipped separately with the flame arrestor To install the temperature sensors that have been shipped separately simply remove any protective packaging from the temperature sensors and thread the temperature sensors into the appropriate threaded instrumentation ports on the flame arrestor end sections making sure to follow temperature sensor manufacturer s instructions par...

Page 8: ...he flame arrestor for damage and to initiate appropriate corrective actions relative to process system and safety Temperature sensors installed by Emerson or installed by the user shall follow the specifications or Table 6 Different temperature sensors may be installed by the end user however these must comply with the safety specifications in Table 6 The use of alternate temperature sensors must ...

Page 9: ... 75 102 150 203 280 380 400 542 535 725 1 Using machine oil as lubricant See Bolt Lubrication section on page 12 and torque correction factors for other lubricants in Table 11 2 Alloy steel element assembly fasteners are provided with a low friction polymer coating No additional lubrication should be required When stainless steel fasteners are provided lubrication is recommended to reduce tighteni...

Page 10: ...meter on the protected cold side shall be no less than the pipe diameter on the unprotected hot side For an in line flame arrestor the pipe diameter on the unprotected hot side shall be no greater than the flame arrestor connection When it is necessary to increase the diameter of the piping on the downstream side unprotected of the detonation flame arrestor 10 EN DFA Series North America Only a le...

Page 11: ...e If the arrestor element cannot be cleaned satisfactorily it must be replaced 7 For best cleaning results a high pressure sprayer with spray wand should be used 1500 to 3000 psig 103 to 207 bar to clean the entire element surface The spray nozzle should be held perpendicular to the surface being cleaned to maximize spray media penetration into the element Alternately spray each side of the elemen...

Page 12: ...e the nuts to the studs such that the amount of thread extending outboard beyond the nut is approximately equal on both ends 4 Tighten the nuts to the torque values shown in Table 10 following the designated sequence repeating he sequence as shown Flange pattern tightening sequences are shown in Figure 6 Bolt Lubrication Lubrication will affect required torque of clean fasteners in good condition ...

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