2150EX AV Flow Module - Isco

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2150EX Area Velocity Flow System Section 2 Preparation and Installation 2.4.4 Zone 1 Battery Module The Model 2196EX is a rechargeable battery module for zones 1 and 2 that offers indication of declining voltage prior to power interruption, with two batteries permanently contained in an IP68 enclosure. See Figure 2-6 for X marking and port labeling. The 2196EX may be safely connected to or disconnected from a 2150EX flow module within a hazardous area. Note The 2196EX is for use in gas hazard zones 1 and 2. It is not approved for use in zone 0 installations, in accordance with IEC 60079-14. Battery protection The 2196EX module has no port or latches on the bottom of the case; therefore, it can only be installed on the bottom of a module stack. One 2196EX module can power one or two 2150EX flow modules with sensors attached. The 2196EX uses two fully rechargeable, nonreplaceable lead-acid batteries. Never operate or store the 2196EX at temperatures above 140 °F (60 °C). Operate the 2196EX below 86 °F (30 °C) for maximum service life. For prolonged shelf life, the 2196EX should be stored at 50 °F (10 °C) or lower in a fully charged state. The module protects the lead-acid batteries from damage due to deep discharge by first indicating low voltage through Flowlink software, and then by shutting off when the voltage becomes critically low. Figure 2-5 Flowlink low-voltage warning 2-12
2150EX Area Velocity Flow System Section 2 Preparation and Installation – + 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. 2-13
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2150EX AV Flow Module - Isco

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