Programming instructions

Designer’s Guide 31
Calsense
Electrical Installation
Wires from the Flow Meter to the ET2000e Irrigation Controller should consist of one black and one red
standard #14 AWG irrigation wire. The maximum wire run between Flow Meter and controller is 2,000
feet. The Flow Meter has two wire leads, a black and a red. At the controller, the black wire in the black
wire harness is connected to the black Flow Meter wire and the red wire in the black wire harness is
connected to the red Flow Meter wire. The Flow Meter wires should be separated from other control
wires when pulled up at the ET2000e Irrigation Controller site.
Caution: If 24 VAC is applied to the Flow Meter wires while testing field wires to determine proper
sequencing, the sensing unit in the Flow Meter will be damaged and the Flow Meter insert will
need to be replaced.
It is very important that all electrical connections are tight and dry. Any water leaking into a connection
will cause Flow Meter problems. Additionally, there should never be any buried splices between the
Flow Meter and the ET2000e Irrigation Controller. Use only Calsense recommended electrical
connectors.
Wire and Electrical Connectors
Since the Calsense Flow Meter operates by sending low-voltage digital pulses to the controller, all
electrical connections must be waterproof and moisture-resistant. It is highly recommended that all wire
running between the controller and Flow Meter be direct pulls and have no splices. If wire splices are
unavoidable, they must be installed in a valve box. Calsense recommends using 3M™ Scotchcast™ 3570G
Connector Sealing Packs (formerly 3M Scotchlok™ 3570 Connector Sealing Packs) or Spears® DS-100 Dri-
Splice Connectors with DS-300 Dri-Splice Sealant. See Figure 31
for more information about using wire
splices.
Multiple Flow Meter Interface (model -F)
The -F interface enables Calsense ET2000e Irrigation Controllers to receive up to three separate Flow
Meter inputs on projects with more than one water source. Additionally, it supports operation of up to
three master valves. In most cases, when reading flow from multiple Flow Meters, the controller tallies
the readings.
The only exception is a Bypass Manifold
, where only one Flow Meter is operated at a time. The first Flow
Meter is wired to the ET2000e Irrigation Controller using the standard Calsense red and black Flow
Meter wires. The second and third Flow Metes are wired to the ET2000e Irrigation Controller using an
additional wire harness supplied as part of the -F option.
Flow Meter Maximum Pressure
FM-1B 400 psi
FM-1.25B 400 psi
FM-1.5B 400 psi
FM-2B 200 psi
FM-1.5 100 psi
FM-2 100 psi
FM-3 100 psi
Table 6: Maximum Flow Meter Pressure Ratings