Page 11 of 16
AT400 User Manual
Rev 2.0
Jan. 05
-201
7
POWER HOOKUP*
WARNING: Use extreme caution when handling power wires.
Make sure the wires are disconnected from the source.
1a) 110VAC power: hook white (neutral) wire into slot 10.
Then hook black (hot) wire into slot 11.
1b) 220VAC power: hook either hot wire into slot 11. Then
hook the other hot wire into slot 9.
1c) 10-30VDC: first hook ground wire into slot 7. Then hook
V+ wire into slot 8.
AIR VELOCITY OUTPUT*
2a) 0-1V F/S output: hook output ground reference to slot 7.
Then hook the air velocity output wire to slot 6.
2b) 0-5V F/S output: hook output ground reference to slot 7.
Then hook the air velocity output wire to slot 5.
2c) 4-20mA F/S output: hook output ground reference to slot 7.
Then hook the air velocity wire to slot 4.
TEMPERATURE OUTPUT (TAT420)*
3a) 0-1V F/S output: hook output ground reference to slot 7.
Then hook temperature output wire to slot 3.
3b) 0-5V F/S output: hook output ground reference to slot 7.
Then hook temperature output wire to slot 2.
3c) 4-20mA F/S output: hook output ground reference to slot 7.
Then hook temperature output wire to slot 1.
MOUNTING THE PROBE
Mount the probe in the air stream to be measured. A common
3/8” by 16-tpi threaded rod or bolt can be used to mount the
probe to a fixture. Connect the air probe to the unit via the
connector on the top of the case.
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