Identify PCB Configuration
• Identify the main pc board as a two-wire or a three-wire unit:
• For XA Gas Monitors:
while looking at the main pc board, locate the identifying label
on the underside of the lid:
• A-ULTX-PCB-A-1 is a two-wire unit, 4-20 mA output
• A-ULTX-PCB-A-2 is a two-wire unit with HART protocol on
the 4-20 mA output
• A-ULTX-PCB-A-3 is a three-wire unit, 4-20 mA output
• A-ULTX-PCB-A-4 is a three-wire unit with HART protocol
on the 4-20 mA output
• For XE and XIR Gas Monitors:
locate the identifying label on the side of the plastic shroud for
the main pc board:
• A-ULTX-PCB-E-1 is a two-wire unit, 4-20 mA output
• A-ULTX-PCB-E-2 is a two-wire unit with HART protocol on
the 4-20 mA output
• A-ULTX-PCB-E-3 is a three-wire unit, 4-20 mA output
• A-ULTX-PCB-E-4 is a three-wire unit with HART protocol
on the 4-20 mA output.
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