Page 10 of 16
AT400 User Manual
Rev 2.0
Jan. 05
-201
7
INSTALLATION AND SETUP FOR AT400, TAT420
MOUNTING THE TRANSMITTER
Mount transmitter on a secure surface. The recommended
screw size is a #8 x ¾” (or longer) tapping screw.
Note: Make all connections with Power Off. Remove cover to
attach Transmitter to mounting area and to attach
power and signal cables. Attach in location free of
physical dangers such as excessive heat or continuous
condensing moisture.
2
Note: On the AT400, terminals 1-3 are not be installed.
Note: Terminals 13-15 are not installed on any transmitter.
TERMINAL CONNECTIONS
1. 4-20 mA temp
9. 220 VAC
2. 0-1 Volt temp TAT420
10. 110 VAC
3. 0-5 Volt temp
11. 220/110 VAC
4. 4-20 mA air velocity
12. No Connection
5. 0-5 Volt air velocity
13. Not Installed
6. 0-1 Volt air velocity
14. Not Installed
7. Ground
15. Not Installed
8. V+ (10-30 VDC)
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