Innoquest SpotOn FM-15 Product Manual Download Page 3

 

3.0 General Operation 

 

Note:

  See Demo Video on 

www.YouTube.com

 

(Search SpotOn Irrigation Flow Meter) 

 
3.1 Nozzle Boot Use 

 

The meter comes with a reuseable “Nozzle Boot” to facilitate taking 
readings on irrigation nozzles. (See Fig. 1 and Fig. 2 above)  
Additional nozzle boots can be ordered from Innoquest by specifying 
Item # 26350. 
 

3.2 Taking a Measurement 

 

Press the 

START

 button to turn the meter 

on.  The LCD will flash “000” momentarily 
indicating it is working properly.  The LCD 
will then show a “_” marker to indicate the 
type of measurement units the meter will use 
when displaying readings.  The meter will 
then show “- - -“ on the LCD indicating the 
meter is ready to take a new measurement.  
Once the meter shows “- - -“, it can be 
placed under the nozzle or pipe to be tested 
(you have 60 seconds to place the meter 
under the flow).  Placement of the meter 
under the flow should be brisk and certain so 
that all the flow from the nozzle is transferred 
quickly to the meter (See Fig 3).  As the 
meter fills with water, the display will start 

 

Fig. 3 

 

 

Fig. 4 

Fig. 1 

Fig. 2 

 

5

flashing “- - -“; this indicates that the reading is in progress.  As soon 
as water reaches the meter’s upper sensor, the flashing stops and the 
flow rate is displayed on the LCD (See Fig 4).  This flow rate will 
continue to be displayed on the meter for 90 seconds or until the 

START

 button is pressed to start a new 

reading.  Once the reading has been 
displayed, the water can be poured out of 
the meter (See Fig 5).  Pouring out the 
contents of the meter will not affect the 
reading being displayed on the LCD.  If a 
reading must be re-started for some reason, 
simply empty the meter and re-press the 

START

 button to ready it for a new 

measurement.   

 
PLEASE NOTE:  For accurate measurements the meter 

must be 

held still

 during the filling period.  It is ok if the meter is held at an 

angle, but must be held at this angle during the whole fill period.  

Note:

 The diffuser pad installed in the opening at the top of the meter 

is important for producing accurate readings.  The purpose of this 
diffuser pad is to keep strong flows or sprays from directly impacting 
the surface of the water inside the meter during a reading. 

 
3.3 Setting Display Units 

 

The meter can be configured to display readings in either gallons per 
minute (GPM), liters per minutes (L/min), or liters per hour (L/hr).  To 
change the display units, the user must first turn the meter off.  Then 
press and hold the 

START

 button.  Keep holding the 

START

 button 

until the display shows “_ _ _” (about 3 seconds).   When the display 
shows “_ _ _” release the 

START

 button and the display will start 

flashing “_” above the unit type that is currently selected.  Press the 

START

 button to change this selection.  Once the correct unit type is 

selected, wait 

without

 pressing the 

START

 button for 5 seconds.  

The meter will then enter the new setting and shut off.  From that 
point forward, the meter will always display readings in the new units. 
 
 
 
 
 
 
 

Fig. 5

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