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follow this same pattern. Each target for each Crop Age Day can be viewed in this Mode. 
Increasing Targets within a Crop Age Target Group will reduce the amount of water the 
crop receives as the crop ages. Decreasing Targets will increase the amount of water as the 
crop ages. 
 
If setting up an Increasing Target Crop Age, Too Low and Too High messages will flash 
on the unit when adjusting the midpoint targets if the target being adjusted is lower than 
the previous midpoint target or higher than the next midpoint target. This is just an 
indicator to assist in setting up targets. Even though the message (Too Low or Too High) 
might flash, the unit will accept whatever target is entered. 
 
If setting up a Decreasing Target Crop Age, Too High and Too Low messages will flash on 
the unit when adjusting the midpoint targets if the target being adjusted is higher than the 
previous midpoint target or lower than the next midpoint target. This is just an indicator to 
assist in setting up targets. Even though the message (Too High or Too Low) might flash, 
the unit still accepts whatever target is entered. 
 

SET DISABLE TARGET GROUPS 

This Mode is used to set up the nighttime Disables. Set up to four different groups. When 
setting up a group that is attached to a misting station, the misting station will disable for 
the amount of time called for in the Disable Group prior to Sunrise. When attaching the 
Disable Group to an irrigation station, the irrigation station will disable for the amount of 
time called for in the Disable Group prior to Sunset. No matter what type of station 
(misting or irrigation) is disabled, the disable will last until the next Sunrise. The midpoints 
for a Disable Group can be adjusted just as the midpoints for a Crop Age Group. Each 
disable target for each Disable day can be viewed in this Mode. 

 
SET ALARMS 

This Mode is used to set up Alarms. Alarms will activate a warning if environmental 
conditions in the greenhouse exceed the chosen parameters. Both High and Low Alarms 
can be set. The WATER PRO can be connected to an existing external alarming system 
(Sensaphone, bell, light, etc...). A dry relay hookup for the alarm system is provided on the 
termination board in the bottom of the WATER PRO. The dry relay for the alarm can also 
be used to warn when a crop-aging program has finished. 
 

CALIBRATE 

This Mode is used to calibrate the VPD Sensors. When calibrating Air Temperature, the 
calibration procedure should be done using a reliable thermometer, out of direct solar 
influence. Use a wet bulb/dry bulb or a sling Hygrometer to calibrate the Relative 
Humidity. The Relative Humidity Sensor is accurate in a range from 0 to 100% plus or 
minus 2% acceptable error. The Temperature Sensor is accurate in a range from 0 to 120° 
F plus or minus 1° F acceptable error. 
 

END OF SCHEDULE WARNING 

This Mode will activate when a CROP AGE has finished on one of the stations. The LED 
Light will activate and blink when a Crop Age has finished. 

Summary of Contents for WATER PRO

Page 1: ...13688 Rider Trl N Earth City MO 63045 PHONE 314 770 0717 FAX 314 506 4587 www phytotronics com Revision 1 2 10 15 2021 Water Pro VPD Misting and Irrigation Control...

Page 2: ...er ELECTRICAL CIRCUIT The electrical circuit that feeds the machine tool transformer must have no other loads connected to it This will prevent damaging surges from other related electrical devices Fo...

Page 3: ...from your solenoid valves 24VAC type to the WATER PRO EXPANSION module plugs 3 Make sure all plugs are secured into the WATER PRO EXPANSION module then turn the screw locking the panel in its enclosur...

Page 4: ...vating the next Output Station FEATURES OF THE EQUIPMENT INPUTS and OUTPUTS The Sensor Inputs to the WATER PRO are as follows 1 Air Temperature 1 from VPD Sensor 1 2 Leaf Temperature 1 from VPD Sensor...

Page 5: ...r Air Temperature 1 Leaf Temperature 1 Relative Humidity 1 Air Temperature 2 If optional sensor installed Leaf Temperature 2 If optional sensor installed Relative Humidity 2 If optional sensor install...

Page 6: ...of time left on an active watering cycle Note Answer all questions with only the number of stations crop aging groups and disable groups that are currently being set up This will prevent the unit fro...

Page 7: ...nrise When attaching the Disable Group to an irrigation station the irrigation station will disable for the amount of time called for in the Disable Group prior to Sunset No matter what type of statio...

Page 8: ...wo mists This gives the VPD per minute For each daily target calculate how much time between each misting for that specific day if the environmental conditions were identical to the first target Multi...

Page 9: ...lant must have water After watering the plant the process starts all over again Just what is VPD and how does it relate to plants To understand VPD we must understand the following 1 How water moves t...

Page 10: ...he VPD accumulation The Set System Mode is where the accumulated VPD information is displayed as it approaches the target that was entered in the Set Station Mode When a station zone needs to be water...

Page 11: ...be 2 When the timer or other device waters the plants go into the Manual Mode and Trigger the Station with the high fixed target To do this a Use the RUN SET switch to go into the Manual Mode b Use th...

Page 12: ...get If attempting to determine a new target enter a high target 1000 for a misting station and 50 000 for an irrigation station Use the VALUE and the PRIOR NEXT switches to enter this target Refer to...

Page 13: ...program or to Stop Watering Use the VALUE switch to enter this choice 36 Push the PRIOR NEXT switch to NEXT to go to the next question 37 Choose whether or not to use a DISABLE program Use the VALUE...

Page 14: ...go to the next question 11 Choose the final day target If attempting to determine this target refer to the section How To Determine Correct Watering Targets 12 Push the PRIOR NEXT switch to NEXT to go...

Page 15: ...sunrise 8 Push the PRIOR NEXT switch to NEXT to go to the next question WARNING If this is the FIRST TIME this crop age program has been set up choose Yes Reset First The WATER PRO resets the targets...

Page 16: ...lations Only in the Manual Mode can the VPD Accumulation for a station be zeroed out NOTE USE OF THE ON OFF AUTO SWITCHES DO NOT ZERO OUT VPD ACCUMULATIONS Example 2 TRIG STATION 1 If the zone connect...

Page 17: ...17...

Page 18: ...only and sole liability of Phytotronics Inc under this warranty is limited to repairing replacing or the issuance of credit for any products returned to Phytotronics Inc during the warranty period of...

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