MSA Ultima X Series User Manual

Appendix: Optional Internal Relays and RESET ButtonMSA
ULTIMA X
®
Series
GB
93
Permissible Cable Length for the ULTIMA X
®
Series with Internal Relays
[4-20 mA models]
The permissible cable length varies for models with or without internal relays.
Specifications for Relays in the ULTIMA X
®
Series Gas Monitor with Internal
Relays
Sensor type
Supply
voltage
Wire cross-
section
Max. cable
length
Max. load resist-
ance [mA output]
Combustible
gases, catalytic
24 V DC 1.5 mm
2
800 m 500 Ohm
Combustible
gases, IR
24 V DC 1.5 mm
2
500 m 500 Ohm
Toxic gases and
oxygen
24 V DC 1.5 mm
2
2000 m 500 Ohm
Screened cable is recommended for the installation.
Temperature range -40 °C to +60 °C
Humidity 15 % to 95 % RH non-condensing
Relays 3 alarms SPDT [single pole, double throw]
Fault relay [normally ener-
gised]
SPDT [single pole, double throw]
Relay Ratings At 125 V AC or 250 V AC,
non-inductive
5.0 A or 5 A at 75 W
At 30 V DC, non-inductive 5.0 A or 5 A at 75 W
Power consump-
tion [instrument
with relay]
Toxic gases and oxygen At 24 V DC max. 80 mA
Combustible gas, catalytic At 24 V DC max. 200 mA
Combustible gas, IR At 24 V DC max. 250 mA

MSA Ultima X Series Specifications

General

Brand	MSA
Model	Ultima X Series
Category	Measuring Instruments
Language	English