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

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