WIKA DIH50 - Specific Safe Use Conditions; Intrinsically Safe Circuit Parameters

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WIKA operating instructions models DIH50, DIH52
EN
14008548.05 12/2016 EN/DE
9.2 Specific conditions for safe use, models DIH5x-I
Installation in areas requiring EPL Ga or EPL Gb equipment
■
Electronic assemblies of field indicator models DIH5x-I shall be mounted inside a case
suitable for installation in EPL Ga or Gb area respectively, wherein electrostatic charge
effects are excluded. The case shall provide, as a minimum, a degree of protection of
IP20 according to IEC 60529.
■
Wiring inside this case shall satisfy the conditions of clause 6.3.12 and clause 7.6.e of
IEC 60079-11:2011.
■
Terminals or connectors for the intrinsically safe circuits shall be arranged in line with
clause 6.2.1 or 6.2.2 of IEC 60079-11:2011, respectively.
Installation in areas requiring EPL Da or EPL Db equipment
■
Electronic assemblies of field indicator models DIH5x-I shall be mounted inside a case
suitable for installation in EPL Da or Db area respectively, wherein electrostatic charge
effects are excluded. The case shall provide, as a minimum, a degree of protection of
IP5x (group IIIB application) or IP6x (group IIIC application) according to IEC 60529.
■
Wiring inside this case shall satisfy the conditions of clause 6.3.12 and clause 7.6.e of
IEC 60079-11:2011.
■
Terminals or connectors for the intrinsically safe circuits shall be arranged in line with
clause 6.2.1 or 6.2.2 of IEC 60079-11:2011, respectively.
9.3 Intrinsically safe supply and signal circuit, models DIHxx-B, DIHxx-NT
(4 ... 20 mA loop; terminal ⊕ and ⊖)
Parameters Models DIH5x-B, DIH5x-I
Voltage U
i
/ U
0
29 V
Strenght of current I
i
/ I
0
100 mA
Power P
i
680 mW
Effective internal capacitance C
i
13.2 nF
Effective internal inductance L
i
1.2 μH
9. Information on mounting and operation in hazardous areas