Teledyne 4220, Installation And Operation Manual, Page: 18 / 198

4220 Flow Meter
Section 1 Introduction
1-4
Figure 1-1 Submerged Probe Level Sensor with Standard Tip
1.3.3 Two Probes Available
Teledyne Isco offers two different submerged probe level sensors
for use with the 4220. The standard unit is intended for oper-
ation in depths from 1 inch to 10 feet maximum. The other unit is
capable of operation to depths as great as 30 feet. The difference
in the probes is in the pressure transducer used inside. The two
are not interchangeable. You must select the appropriate unit
based on the maximum anticipated depth in your flow situation.
1.4 Software Upgrades
Software for the 4200 Series Flow Meters can be upgraded
without the unit being returned to the factory. With Flash
Memory, software updates can easily be installed in the field
with a disk, a computer, and a cable. For more information about
installing software upgrades in the 4220 Flow Meter, see Section
6.
1.5 Controls, Indicators,
and Connectors
The controls, indicators and connectors of the 4220 Flow Meter
are listed in Table 1-1, and their functions are briefly described.
Refer to Figure 1-2 for a view of the controls and indicators, and
Figure 1-3 for a view of the connectors and their pin functions.