Electrical classification 1) 2), Type of protection “intrinsically safe, Explosion protection zone 2 – Badger Meter SRD/SRI Valve Positioners User Manual

Page 13: Explosion protection zone 20, Electrical data, Fm type of protection, Electrical classification

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Electrical Classification

1) 2)

See Certificates of Conformity EX EVE0105 A

Type of Protection “Intrinsically Safe”

Type AI 638

II 2 G EEx ia IIB/IIC, II 2 G EEx ib IIB/IIC

Temperature

Classes

Version with HART

communication

and "without

communication"

T4 with explosion

protection code

EA4

Version with

communications

HART, FOUNDATION

Fieldbus and

PROFIBUS-PA

T4 / T6 with

explosion

protection code

EAA

Certificate of

Conformity

PTB 00 ATEX 2128

For use in hazardous areas in circuits

certified as intrinsically safe with the

following maximum values:

Input circuit:
U max = 30 V,

I max = 130 mA,

P max = 0 9 W

Li = negligible,

Ci = 1 3 nF (5 3 nF

to earth)

Ambient

Temperature

Ranges

Temperature class T4: – 40…80° C

Temperature class T6: – 40…55° C

Explosion Protection Zone 2

Installation of the SRD991 in potentially explosive

atmospheres for Zone 2 (explosion protection EEx nA / nL)
The Intelligent Positioner SRD991, type AI 638 in protection

level intrinsic safety "ia" (II 2 G EEx ib/ia IIB/IIC T6/T4 Gb) can

be operated in potentially hazardous areas of Zone 2 (EEx nA

/ nL Gc) also on a normal (not intrinsically safe) power supply,

of which the voltage output is not higher than the maximum

value for explosion protection intrinsic safety (according to

EN 50014 / EN 50020) described in the EC-Type-Examination

Certificate PTB 00 ATEX 2128
The non intrinsic safe circuit has additionally to fulfill the

requirements of EN 61010-1 (IEC 1010-1), protection grade III,

overvoltage category I
See our Manufacturer’s Declaration on our website

Explosion Protection Zone 20

Certificate of Conformity

IBExU08 ATEX 1148

EX II 1D Ex iaD 20 T 100° C

– 40 °C < Ta < 80° C

Electrical Data

Supply circuit in type of protection Intrinsic safety Ex ia or

Ex ib

Profibus / Fieldbus

HART

Ui

24 V DC

Ui

30V DC

Ii

380 mA

Ii

130 mA

Pi

5 32 W

Pi

0 9 W

Ci

1 3 nF

Ci

1 3 nF

Li

5 μH

Li

5 μH

Ci: effective inner capacity

Li: effective inner inductivity
The supply connections have an inner capacity of max 5 3 nF

opposite the ground
The positioner type SRD991 fulfils the requirements of

explosion protection for the Equipment Group II and

Category 1D in type of protection Intrinsic safety for dust

with a maximum surface temperature of 100° C

1) With appropriate order only

2) National requirements must be observed

FM Type of Protection

IS / I, II, III / 1/ ABCDEFG / T4 Ta = 80° C Entity; Type 4X; DOKZ

534 396 058

NI/I/ 2/ ABCD; S/ II,III / FG / T4 Ta = 80° C; Type 4X;

IS / I,II,III / 1 / ABCDFG / T4 Ta = 55° C Entity; Type 4X; DOKZ

534 396 049

NI/I/2/ ABCD; S/ II,III / 2 / FG / T4 Ta = 80° C, T6 Ta =55° C;

Type 4X

CSA Type of Protection “Intrinsic Safety / Non-

Incendive”

Class I Groups A, B, C and D

Class II Groups E, F and G: Class III

Ex ia IIC T4/T6 IP65

HART / 4 - 20mA / Profibus/Fieldbus -abbcdefg-j Positioner

12…36V DC 4…20 mA or 48V DC, Intrinsically Safe when

installed as per submittor’s drawings DOKZ 534 396 067 or

DOKZ 534 396 076 : Temp Code T4 at max amb 80° C or T6 at

max amb 55° C

Class I Div 2 Groups A B C and D

Class II Div 2 Group F and G

Class III Div 2: IP65 End
With Electrical Classification ATEX + Zone 20 Dust, Codes ED4

and EDA, the Travel indicator is not visible

Safety Requirements

Page 13

August 2014

POS-UM-00223-EN-02

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