38 Installation - Spray Control
HM860 FLOWMETER
The HM860 FLOWMETER has an output sig-
nal proportional to the flow through it. There are
decals on the meter with the calibration num-
bers needed to calibrate the controller. These
calibration numbers are in “PULSES PER GAL-
LON” and “PULSES PER POUND OF ACTUAL
NITROGEN.”
Although the HM860 FLOWMETER was de-
signed to be operated while mounted in any di-
rection, when used in applications with flow of
5 gallons per minute or less, it is recommended
to install the HM860 FLOWMETER in the verti-
cal position with the flow direction up (arrow on
meter pointing up).
Do not install the HM860 FLOWMETER near
strong magnetic fields such as those created by
solenoids or motors. Keep all electrical wiring at
least 1-foot away from meter.
INSTALLATION
Refer to the figure for the proper installation of
the HM860 FLOWMETER.
STEP 1 Find a convenient location (vertical
for low flow rates) on your sprayer to
mount the flowmeter.
NOTE: Use Teflon pipe sealant tape on all
pipe connections. Check all hoses and fit
-
tings for slag or contamination prior to as-
sembly. Slag and pipe sealant (tape) are a
major cause of flowmeter problems.
IMPORTANT: The pipe adapter (item 4) must
be installed on the inlet side of the flowmeter.
It’s purpose is to reduce turbulence caused
by hoses, elbows, and reducers. Failure to
use at least 4 inches of straight 1 1/4 inch
pipe may cause the flowmeter to be inaccu
-
rate.
STEP 2 Install pipe adapters (items 4, 5, 6, 7)
on the flowmeter.
STEP 3 Install mounting bracket (item 1) to
flowmeter assembly using the three
1/4 inch nuts supplied (item 9).
NOTE: Make sure arrow on the flowmeter is
pointing in the direction of the flow.
STEP 4 Connect the input hose to the
flowmeter by pressing hose firmly on
to the hose barb and securing with
hose clamp (item 8).
STEP 5 Connect the output to the Servo Valve
or use a 1 1/4 inch by 1-inch hose barb
and attach to the output hose. Secure
with a 1 1/16 hose clamp.
STEP 6 Install the mounting bracket assembly
to the sprayer using the 4 inch hose
clamp, (item 10) or drill two 1/4 inch
diameter holes, and use the 5/16 self-
tapping screws.
STEP 7 Connect your flowmeter to the con
-
troller using the 10 foot and 20 foot
cables. Route them away from mov-
ing or hot parts, using the cable ties
provided. Both cables are labeled for
easy identification. Connect the cable
into the console receptacle labeled
“Flow.”
8
6
5
4
2
7
9
9
1
10
DWG. NO. 2729
Summary of Contents for 8160
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