Two-wire 4-20 mA output
Precise manual setting of the 20 mA flow rate
Rugged cast aluminum housing with fused coating
Electronic components potted in urethane for maximum moisture protection
Can be meter or wall mounted
Test switch to force 4 and 20 mA outputs
Variable averaging to smooth output from particularly turbulent flows
for smoothing of the output signal. The degree of averaging can be selected in the feld, from 2 to 16 seconds.
For maximum environmental protection, the electronic components are encased in a special semi-fexible urethanepotting material. The housing is cast from aluminum and fuse-coated. The clamshell housing is connected directly to the fow sensor or, in the wall mount version, provided with mounting feet.
The AO55 will operate on a relatively wide range of current loop voltages, 24 to 36 Vdc. Lower voltages limit the load
that can be applied to the loop without distortion of the signal. (See Load/Supply chart if there is a question regarding voltage vs. load.) A built-in power regulator supplies the appropriate power to the fow sensor.
Typical applications for this transmitter are telemetry (or SCADA), distributed control systems, programmable controllers, data logging, and chart recording.
• Distributed control systems
• Programmable controllers
• Chart recording
• Data logging
• Pulse-to-analog converter
• Current loop powered
• Smooth output signal
• Easy set-up