MSA Ultima - Page 48

Table 3-1. Performance Specifications
SENSOR LIFE
CATALYTIC
COMBUSTIBLES
3 years, Typically
IR CO
2
&
COMBUSTIBLES
5 years, Typically
OXYGEN
&TOXICS
2 years, Typically
FULL
REPLACEMENT
WARRANTY
1 year; 2 years for IR Combustibles & CO
2
HAZARDOUS
AREA RATING
EXPLOSION-
PROOF
MODELS
Class I, Div. 1, Groups B, C & D
NEMA 4X
For explosion-proof models only
INTRINSICALLY
SAFE
COMBUSTIBLE,
OXYGEN &
TOXICS
frequency and milliamp outputs
only
WIRING
REQUIREMENTS
mA OUTPUT
OXYGEN &
TOXICS
2-wire or 3-wire
COMBUSTIBLES
& CO
2
3-wire
FREQUENCY & MULTIPLEX
OUTPUTS
3-wire
POWER INPUT
(for power
input with
internal relays,
see Appendix
C)
mA VERSIONS
OXYGEN &
TOXICS
7-30 VDC @ 41 mA max.
CATALYTIC
COMBUSTIBLES
7-30 VDC @ 450 mA maximum
IR
COMBUSTIBLES
& CO
2
10-30 VDC @ 200 mA
maximum
FREQUENCY &
MULTIPLEX
VERSIONS
Supplied by MSA controllers
Chapter 3, Specifications
3-4