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5-1
2150EX Area Velocity Flow Module
Section 5 Maintenance
5.1 Maintenance
Overview
This section explains the maintenance requirements of the
2150EX Area Velocity Flow Module, 2191EX Battery Module,
and the AV2150EX Sensor.
The 2150EX System is designed to perform reliably in adverse
conditions with a minimal amount of routine service require-
ments. To keep your system working properly, the following
should be checked at regular intervals:
• Battery power (section 5.3)
• Desiccant (section 5.4)
• Channel conditions (section 5.5)
Maintenance intervals are affected by many variables; for
example, the Data Storage Rate will affect the battery life.
Humidity levels obviously affect the service life of the desiccant,
and the amount of debris in the stream can drastically alter the
channel conditions.
As a guide, a basic system installed in an environment with mod-
erate humidity levels and an AV Sensor installed in a channel
relatively free from debris and silt, the maintenance interval
should not exceed three months. A basic system is defined as:
• a 2150EX Module and AV Sensor,
• powered by a fresh pair of LTC2191EX 8 volt lithium or
SLA2191EX 8 volt lead-acid battery packs
• recording readings at the default intervals of 15
minutes.
Experience is often the best tool to use when establishing
minimum maintenance intervals for your system. Until you have
gained an understanding of the 2150EX Module’s operation
under differing environmental conditions, a weekly maintenance
interval is recommended.
5.2 Maintenance Kits
Many of the parts called out in the Installation and Maintenance
sections of this manual are available in maintenance kits. Kit
number 60-2059-001, which supports the 2150EX Module, con-
tains O-rings for the connectors and desiccant cartridge, a hydro-
phobic filter, and a one-pound container of indicating silica gel
desiccant. Kit number 60-2009-332, which supports the 2191EX
Battery Module, contains O-rings for the connectors, gaskets for
the battery doors, humidity indicators, and bags of desiccant. You
can order the kits by calling Teledyne Isco’s Customer Service
Department.
Teledyne Isco, Inc.
Customer Service Dept.
P.O. Box 82531
Lincoln, NE 68501 USA
Phone: (800) 228-4373
(402) 464-0231
FAX: (402) 465-3022
E-mail:
IscoInfo@teledyne.com