Specifications

Publication 1794-SG002D-EN-P - May 2012
About the FLEX I/O and FLEX Ex I/O Systems 3
1794 FLEX I/O XT Overview
FLEX I/O XT modules are designated for extreme environment use.
They differ from their non XT counterparts only in operational temperature
ranges and conformal coating is standard for FLEX I/O XT products.
FLEX I/O XT modules meet or exceed the following standards:
• ANSI / ISA-S71.04-1985; Class G1, G2 and G3 Environments
• CEI IEC 6065A-4; Class 1 and 2 Environments
• UL 746E
• MIL-1-46058C to ASTM-G21; (Tropicalization and fungicide)
These standards specify common emissions and classify their concentration levels
in a number of industrial processes. Just a few of the common reactive agents that
the FLEX I/O XT modules protect against are:
• H2S – Hydrogen sulfide
•SO2, SO3 – Sulfur dioxide
•CnHn – Hydrocarbons
• NOx – Oxides of nitrogen
• CI2 – Wet Chlorine / Dry Chlorine
•NH3 – Ammonia
General FLEX I/O and
FLEX I/O XT Specifications
The following table shows the similarities and differences between the
FLEX I/O and the FLEX I/O XT specifications.
Specifications Comparison
Attribute
(1)
1794 FLEX I/O 1794 FLEX I/O XT
Temperature, operating 0…55 °C (32…131 °F) -20...70 ºC (-4....185 ºF)
Temperature, nonoperating -40…85 °C (-40…185 °F) -40...85 ºC (-40...185 ºF)
Relative humidity 5…95% non-condensing
Shock, operating
(2)
30 g peak acceleration, 11(±1) ms pulse width
Shock, nonoperating
(1)
50 g peak acceleration, 11(±1) ms pulse width
Vibration Tested 5 g @ 10…500 Hz per IEC 68-2-6
Wire size 0.34mm
2
…2.5 mm
2
(22…12 AWG) stranded copper wire rated at
75 °C or higher
1.2 mm (3/64 in.) insulation max
Atmospheric protection non conformal coated conformal coated to meet or
exceed the following standards:
• ANSI / ISA-S71.04-1985; Class
G1, G2 and G3 Environments
• CEI IEC 6065A-4; Class 1 and 2
Environments
• UL 746E
• MIL-1-46058C to ASTM-G21;
(Tropicalization and fungicide)