User Manual

Datamatic, LTD. System Training Manual Version 08.24.12
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Confidential Datamatic, Ltd. 2012
NOTE: Only use isopropyl rubbing alcohol marked “99% by volume”. Lower concentrations, such as
the commonly available 91%, do not clean or evaporate well and adversely affect sensor-to-meter bond.
#2 Placement of the Sensor
a) Insert sensor cable through sensor flap.
b) Remove the adhesive backing from the high-bond tape on the optic sensor face.
c) Orient the sensor so the water meter needle approaches the sensor from the cable side and
perpendicular to the cable. There are marks on each side of the sensor base that are to be in line with
the needle when it passes. Do not place the sensor over any moving part or the sweep hand of the
register. Normally, place sensor along outer edge of register.
Here is an example of correct Sensor Placement
:
#3 Pressure – To the Sensor on the Meter
NOTE: Since the 3M tape provides a pressure sensitive seal, the installer must apply 15 lbs. of
pressure to the FIREFLY optical sensor immediately after attaching to the lens surface for a minimum
of 60 seconds.
a) Very Important: Press the adhesive down for 60+ seconds using 15 lbs of pressure. Allow
24-96 hours to cure.
b) Fasten the cable to the register with a zip tie.
c) Place DOW CORNING 111 Compound or Goop-Plumber’s Adhesive #15112 (purple tube)
around the edge of the sensor and under the tail of the sensor. Do not squirt the adhesive
UNDER the 3M seal. The goal is to provide a temporary water barrier between the meter
face and the edge of the sensor, so that the 3M adhesive can cure properly.
d) Position the flap at the base of the sensor so that it folds over and “hangs” above the register
to try to keep most of the stray light out while it processes through AutoCAL. The flap will
be “pulled” over the sensor snuggly lying flatter on the meter during the Read and Verify
procedure that will be discussed later.
#4 Programming (see below)