Emerson Process Management ControlWave EFM 3808 - Manual (Page 56)

2-4 / Installation & Operation CI-ControlWave EFM
ControlWave EFM Modules that comprise the system are housed in a base assembly
consisting of an open faced Gold Irridite coated Aluminum Chassis equipped with either a
4-Slot or 8-Slot Backplane. Dimensional drawings of the Base Assemblies are provided at
the end of Chapter 4.
2.2 SITE LOCATION CONSIDERATIONS
Check all clearances when choosing an installation site. Make sure that the ControlWave
EFM Instrument Front Cover (hinged on the left side) can be opened for wiring and service.
Make sure that the LCD/Keypad is visible and accessible to the on-site operator. There
should also be clearance for the optional Solar Panel (if required). The enclosed unit
measures 14.55” in height by 13” in width by 6.875” in depth. The Multivariable
Transducer adds 2.8” to the height of the unit.
Information on mounting the ControlWave EFM assembly at an installation site is
provided in Section 2.3.1 Mounting the ControlWave EFM Enclosure.
2.2.1 Temperature & Humidity Limits
ControlWave EFM electronic flow computers have been designed to operate over a -40 °F
to +158 °F (-40°C to +70°C) temperature range (with storage at up to +185°F (+85°C)) and a
0% to 95% Relative Humidity range. Make sure that the ambient temperature and
humidity at the measuring site remains within these limits. Operation beyond these ranges
could cause output errors and erratic performance. Prolonged operation under extreme
conditions could also result in failure of the unit.
2.2.2 Vibration Limits
Check the mounted enclosure, panel or equipment rack for mechanical vibrations. Make
sure that the ControlWave EFM is not exposed to a level of vibration that ex-ceeds those
given in the specifications. ControlWave EFM vibration limits are 1g for 10 - 150 Hz & .5g
for 150 - 2000 Hz.
2.3 ControlWave EFM INSTALLATION/CONIGURATION
ControlWave EFM electronic flow computers are shipped from the factory with all
components (wired and mounted) except for the unit’s Solar Panel and Battery (if provided);
these items are shipped separately.
Overview of Configuration
An overview of the seven main configuration steps are provided herein.
Step 1. Hardware Configuration
This involves unpacking the ControlWave EFM hardware, mounting the enclosure, wiring
I/O terminations, connecting any permanent communication cables, making proper ground
connections, connecting a communication cable to a PC workstation and setting switches.
To install and configure the ControlWave EFM, follow Hard-ware configuration steps 1
through 11 below: