OPW M2010-EU, Installation Manual

Page: 143 / 149

Appendix I - ISIM Control Drawing
NOTES:
1.
Description
The Intelligent Sensor Interface Module (ISi) allows multiple sensors (maximum of 16) connected to a
single cable run and a single barrier position. The equipment is intended for installation in Category 1,
Group IIA Hazardous Locations.
2. Model numbers covered in this control drawing
ISI with small single float switch , brass Model 30-0230-S
ISI with small single float switch , plastic Model 30-0231-S
ISI with large single float switch , plastic Model 30-0231-L
ISI with dual float switch, plastic Model 30-0232-D-XX
ISI with dual float switch with hydrocarbon detection, plastic Model 30-0232-DH-XX
ISI with hydrocarbon detection, interstitial
Model 30-0233-H
ISI with hydrocarbon and water detection, interstitial Model 30-0233-HW
ISI with hydrocarbon detection liquid phase Model 30-0234-H-XX
ISI with hydrocarbon and water detection liquid phase Model 30-0234-HW-XX
ISI with hydrocarbon vapor detection Model 30-0235-V
ISI with hydrocarbon vapor detection and water Model 30-0235-VW
ISI with liquid detection Model 30-0236-L Only UL Certified
ISI with liquid and water detection Model 30-0236-LW Only UL Certified
ISI standalone for attaching to a third party certified device Model 20-0349-ISI
3.
Entity parameters
Entity input parameters of Intelligent Sensor Interface Module (ISI) when attached to sensor Includes a
maximum 15m cable between sensor and ISI.
Vmax,Ui 14.9 V lmax, Ii 305 mA Ci 0u F Li 50uH Pi 1.0 W
Entity input and output parameters of Intelligent Sensor Interface Module (ISI) for attaching to unspecified
approved sensor. Includes a maximum 15 m cable between sensor and ISI.
Vmax,Ui 14.9 V lmax, Ii 305 mA Ci 0u F Li 165mH Pi 1.0 W
Vt, Uo 14.9V It, lo 148mA Ca, Co 2uF La, Lo 0.15mH Po 0.56 W
Associated Apparatus must be third party listed (certified) as providing intrinsically safe circuits for the
application. Use the following to determine suitability of connections:
14.9V (Vmax, Ui) ≥ Voc or Vt or Uo
305mA (lmax, Ii) ≥ Isc or It or lo
1.0W (Pi)
≥ Po
If Po of the associated apparatus is not known, it may be calculated using the following formula: Po=
(Uo*lo)/4
Associated Apparatus output current must be limited by resistor such that the output voltage current plot is
a straight line between open-circuit voltage and short-circuit current.
4.
Calculating Capacitance
Doc. No.: M2010-EU Rev.: 13
Page 143 of 149