ACCU-MAX+ SERIES
FORM #1173
12
REV B 7/13/2021
Appendix A: Hazardous Location Details
WARNING!
When installed in hazardous locations where the dial may be exposed to flammable vapors (e.g.
propane), the dial must be connected via a suitably rated intrinsically safe power supply. The connection of
non-intrinsically safe power and communication could result in fire or explosion of flammable vapor causing
serious injury or death.
Note: The insulation between the Intrinsically Safe Circuit and the body of the digital dial is below 500V rms.
Table A-1: Digital Dial UL Markings and Standards
UL Marking
UL/cUL
Class
I
Zone 1 AEx ib IIB T4 Gb
Ex ib IIB T4 Gb
Temperature Range
-40°C to +50°C
Applicable Standards
UL 60079-0, Seventh Edition
UL 60079-11, Sixth Edition
CAN/CSA C22.2 No. 60079-0, Third Edition
CAN/CSA C22.2 No. 60079-11, Second Edition
UL 508, Eighteenth Edition
CSA C22.2 No 14-18, Thirteenth Edition
Entity Parameters:
Terminal M12 Connector Pins 4 and 5 to be connected to a simple apparatus.
Terminal M12 Connector Pins 1-3,6-8
Parameter
Ui
Ii
Pi
Li
Ci
Group IIB
9.6V
610mA
0.94W
5.17uH
13.42uF
Environmental Ratings:
The relation between ambient temperature and the assigned temperature
class is as follows:
Ambient temperature range
Temperature Class
-40
°
C ≤ Ta ≤ +50
°
C
T4
IP rating of 20.
