MSA Ultima X Series Installation & Maintenance Instructions

Table 1-2. Cable Length and Wire Size
for Units Without Internal Relays
GAS SENSOR DC WIRE MAXIMUM MAXIMUM
TYPE OUTPUT VOLTAGE SIZE CABLE LENGTH LOAD
SUPPLY (AWG) WITHOUT HART RESISTANCE
(FEET) (METERS) (OHMS)
Oxygen
or Toxic 2 Wire 12 VDC 22 4000 1219 100
900(w/HART) 274 (w/HART) 50 (w/HART)
24 VDC 22 7,000 2134 500
Oxygen
or Toxic 3 Wire 24 VDC 22 10,000 3048 500
Combustible 3 Wire 12 VDC 18 900 274 250
16 1,400 427 250
12 3,600 1097 250
Combustible 3 Wire 24 VDC 18 2,500 762 500
16 4,200 1280 500
12 10,000 3048 500
XIR 3 wire 12 VDC 18 300 91 250
16 500 152 250
12 900 274 250
XIR 3 wire 24 VDC 18 2,000 610 500
16 3,500 1067 500
12 5,000 1524 500
An external power supply is required to supply 8-30 VDC to the Ultima X
Series Gas Monitor (For power requirements, see Chapter 3,
"Specifications"). All connections should be made by following appropriate
wire code procedures.
For proper installation of an AC power supply used with an Ultima X Series
transmitter, refer to the following drawings for detailed information. Optional
12 VDC or 24 VDC internal and external power supplies can be ordered
with the Ultima X Series Gas Monitors.
1-11

MSA Ultima X Series Specifications

General

Brand	MSA
Model	Ultima X Series
Category	Measuring Instruments
Language	English