Endura APA592
pH / Redox (ORP) transmitter
2 Use in Areas Requiring Ignition Protection
14
OI/APA592–EN Rev. E
2.5.4 APA592-pH.F1 or .C1 (Intrinsic Safety)
Note.
See installation drawings P0908 – FM (page 100), or P0910 – CSA (page 102) for allowable
sensors.
Agency
Area Classification
FM
Class I, Div. 1, Groups A, B, C, D
Class II/III, Div. 1, Group E, F, G; T4 Ta = 60 ºC
CSA
Class I, Div. 1, Groups A, B, C, D
Class II, Div. 1, Groups E, F, G
Class III; Div. 1: T4
Table 2.3 Intrinsically Safe
Input Parameters
Maximum voltage
U
i
= 30 V
Maximum input current
Ii = 160 mA
Maximum power
P
i
= 0,8 W
Internal inductance
L
i
= 0,5 mH
Internal capacitance
C
i
= 5 nF
Table 2.4 Intrinsic Safety Input Parameters
Output Parameters
Open-circuit voltage (maximum)
U
o
= 11.8 V
Short-circuit current (maximum)
I
o
= 5 mA
Maximum output power
P
o
= 15 mW
Allowed inductance (total)
L
a
= 1 H
Allowed capacitance (total)
C
a
= 1.45 µF
Table 2.5 Intrinsic Safety Output Parameters
Notes.
Parameters apply to entire system inclusive of cables.
Each specified electrical parameter must be applied individually and in combination. Do not
exceed the maximum values when applying the electrical parameters individually or in
combination.
