September 2004
8-2 Specifications
Electrical Specifications The electrical specifications for the Model AT868 flow transmitter
are divided into the following categories:
Power Supply Options:
Standard: 85 to 265 VAC, 47-65 Hz, ± 10%.
Optional: 12 to 28 VDC; ± 5%.
Power Consumption:
10 W maximum (not including inrush current required for DC
supply specification).
Operating Mode Correlation Transit-Time™ Mode with clamp-on or wetted
transducers.
Input/Output
Specifications
Digital Display:
2-line x 16-character LCD display, LED backlight, configurable to
display up to 4 measurement parameters in sequence.
Digital Communications:
Standard: RS232 serial port for PC, terminal or printer.
Optional: RS485 serial port for PC, terminal or printer.
Analog Outputs:
1 isolated 0/4-20 mA, 600 Ω max. load.
1 pulse totalizer/frequency output, optically isolated, 3 A max.,
100 VDC max., 1 W max., from 0.1 to 10 kHz.
Totalizer: 1 pulse per defined unit of parameter
(e.g., 1 pulse/gal).
Frequency: pulse frequency proportional to magnitude of
parameter (e.g., 10 Hz = 1 gal/min).
Optional:
2-channel option includes a second set of the standard outputs as
described above. Outputs can be configured independent of
channel.
Cable and Length:
Standard: Pair of coaxial cables, type RG62 A/U, or as specified
for transducer type. Length up to 3 ft (1 m).
Optional: Lengths up to 1,000 ft (330 m) max.
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