User's Manual

DRAFT
Chapter 1: System Overview 15
DRAFT
©
Datamatic, Ltd. 2000 - 2005
Installation Preparation
Installation Considerations
1. Signal distance varies depending on the location of the MIU. FIREFLYs installed
above-ground generally transmit the greatest distance.
2. The material of a pit or vault lid affects the transmission range. For example, a
transmitter has a greater range sending from a pit with a plastic lid than a cast iron
lid.
3. Lids with holes of a diameter of roughly 1 3/4 inches make it possible to mount the
FIREFLY MIU through the lid. This can increase transmission range significantly.
4. Complete field installation of an MIU takes 5-10 minutes, depending on the meter
location and mounting application.
5. If the lid has a hole for the unit, use the
cap and wing nut assembly (“lid lock”
pictured at right). Ensure that enough
space exists between the box lid and
the ground for the unit to sit. If not,
remove some of the dirt from the
bottom of the box. Do not over-
tighten lid locks.
Water FIREFLY Installation
Installing the Optical Sensor-End FIREFLY
Meter Preparation
1. Remove meter box lid.
2. Survey the meter, checking lid, hole depth, and overall cleanliness.
3. Check for meter disqualifications and enter the corresponding skip code.
4. Clean excess dirt from meter lid, exposing meter number and verify it with the
account on the ROADRUNNER.
5. Flip lid back and pre-clean meter face/lens using Fast Orange non-pumice cleaner
and a cloth or cotton swab to remove residue.
6. Clean meter face/lens with 99% isopropyl alcohol and a NEW lint-free cotton swab.
Note: Use Isopropyl rubbing alcohol, 99% by volume. Lower
concentrations do not clean or evaporate as well and adversely affect the
sensor-to-meter bond.