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Series 820 Instruction Manual Chapter 1 Introduction
IM-82-C 1-3
Top-Trak Features
Standard Top-Trak Mass Flow Meters require a 12 to 15 VDC exter-
nal power source (24 VDC input power optional). The transducerÕs
0 to 5 VDC output signal allows for flow recording, data-logging or
control. A 4 to 20 mA output signal is optionally available. Input
power and output signal connections are made via the 9-pin sub-type
D-connector located on the side of the transducer. An additional input
power jack is located just below the D-connector. (It is important to
connect input power at only one location.)
The transducer shown below is a typical example of a 822 Series
Top-Trak Mass Flow Meter. Other models may vary slightly in their
appearance but are operationally equivalent.
Figure 1-1. Top-Trak Features (Typical)