2150EX AV Flow Module - Isco

2150EX Area Velocity Flow System
Section 2 Preparation and Installation
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+
2196EX port connector
As the 2196EX output voltage decreases to a value near the
7-volt shut-off threshold, Flowlink software will issue a
low-voltage warning (Figure 2-5).
Neither of these protective functions should become necessary
on a regular basis. Cycle life is improved by regularly
re-charging the batteries before a drop in voltage is
indicated.
The voltage may also be tested with a voltmeter at the port connector
on pins c (+) and d (–), or on the internal circuit board (see
the test points shown in Figure 2-7).
Note
There is a 60K ohm resistor in series with the voltage sensing
circuit. The voltage reading measured on the circuit board may
have slight variance, depending on the voltmeter used.
CAUTION
A 2196EX module kept in storage for extended periods should
be recharged approximately every six to nine months. The battery
voltage should never be allowed to fall below 10.5 volts
before recharging. Deep discharge of the lead-acid batteries
can lead to permanent loss of capacity.
WARNING
Ensure that the 2196EX module case is never subjected to
physical impact with enough force to cause cracking during
transport, installation, operation, or storage. Damage to the
case can compromise the unit’s safety.
Important Information
Regarding “X” Marking
Read all labels carefully before installing the equipment!
The 2150EX and associated equipment are clearly labeled with
color and/or text so you know what can be located in a safe or
hazardous area (see figure below).
The ATEX labeling on the serial tag of the 2196EX module shows
a number ending in “X.” The X marking indicates that there are
special conditions that must be met to ensure safety, as explained
beginning on page viii in the front of this manual.
In the case of the 2196EX, the module must be protected from
mechanical damage when installed and during transit.
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