Fine Offset Electronics WH51 Soil Moisture Sensor User Manual

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Date Submitted	2018-05-15 00:00:00
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Instruction Manual
Soil Moisture Monitor with Time Display
Model: WH0291
Contents
1. Introduction ............................................................................................... 2
2. Get Started................................................................................................ 2
2.1 Parts List ........................................................................................ 2
2.2 Soil Moisture Sensor Set Up ........................................................ 2
2.3 Display Console Set Up ................................................................ 3
2.3.1 Display Console Layout............................................................. 5
3. Console Operation ................................................................................... 6
3.1 Time setting mode ........................................................................ 6
3.2 Custom mode ................................................................................ 6
4. Function................................................................................................... 10
5. Appendix.................................................................................................. 10
6. Specifications ......................................................................................... 11
7. FCC Statement....................................................................................... 11
8. Warranty Information ............................................................................. 13
Instruction Manual
1. Introduction
Thanks for your purchasing of the WH0291 Soil Moisture Monitor with
Time Display. To ensure the best product performance, please read
this manual and retain it for future reference.
2. Get Started
Note: Power up sequence can be performed in the order shown in this
section: insert battery in the Soil Moisture Monitor(Receiver) first, then
Soil Moisture Sensor(transmitter).
2.1 Parts List
One Soil Moisture Monitor (Receiver)
One Soil Moisture Sensor
One User Manual
2.2 Soil Moisture Sensor Set Up
1. Open the battery cap of the soil moisture sensor as shown in
Figure 1
Instruction Manual
Figure 1
LED Indicator (RF transmission)
Battery Cap
Soil Moisture Sensor
2. Insert one AA battery.
3. After inserting the battery, the remote sensor LED indicator will light
for 4 seconds, and then flash once per 70 second thereafter. Each
time it flashes, the sensor is transmitting data.
4. Close the battery cap.
5. Insert the sensor totally into the soil of your potted plant.
2.3 Display Console Set Up
1.
Remove the battery door on the back of the display, as shown in
Figure 2. Insert one AA (alkaline, lithium or rechargeable) battery
in the back of the display console.
Instruction Manual
Figure 2
1. Integrated Hanging Hole
2. Tabletop Stand
3. ADD+ Button
4. Set Button
5. Battery Compartment
6. Battery Compartment Cover
All of the LCD segments will light up for a few seconds to verify all
segments are operating properly.
Full Display
Instruction Manual
2.
Replace the battery door and fold out the desk stand and place
the console in the upright position.
The console will instantly display the default time (12:00). The soil
moisture value will update on the display within a few minutes.
While in the search mode, the reception search icon
flash.
If the remote does not update, please contact our Customer Service
for support.
2.3.1 Display Console Layout
Figure 3
1. Time Display
2. Soil Moisture Value Display
3. Soil Moisture Grade Display
Instruction Manual
3. Console Operation
Note: The console has two program modes: Time setting mode and
Custom mode.
If no operation for 20s, display will return to normal mode.
3.1 Time setting mode
Long press SET button to enter the time setting mode:
a. Short press ADD+, choose between 12/24hr display
b. Short press SET, step into Hour setting, Short press ADD+ to adjust
hour.
c. Short press SET, step into Minute setting, Short press ADD+ to
adjust minute.
3.2 Custom mode
Custom OFF:
Moisture level is calculated based on default dry and wet definition:
Dry (0%AD) AD: 70
Wet (100% AD) AD: 500
Soil Moisture = (moisture AD – 70) * 100% / ( 500 – 70 )
Example: when sensor moisture AD is 310, calculated moisture is:
(310 – 70)*100% / (430) = 56%.
This is a fixed slope rate linear system.
Custom ON:
When pot soil at dry or wet condition is not giving the moisture sensor
output value that is close to its default assumption, it will give
inaccurate moisture level results. It is commonly happening with
different soil type that gives very different output value at same
moisture level condition. We introduced this custom mode to make this
slope flexible so that it can match your soil type.
This becomes a variable slope rate linear system.
Instruction Manual
Adjusting principle:
0%AD is used to adjust for dry condition reading inconsistency.
When the displayed moisture readings are too high at dry soil
condition, you could lower the slope rate by increasing the 0%AD
value.
100%AD is used to adapt for wet condition reading inconsistency.
When the displayed moisture readings are too low at extremely wet
soil condition, you could decrease the 100%AD value to fix it.
Please refer to the below example for better understanding.
For example:
When you use this product at the first time, please turn off the custom
mode and test the product at the following two situations:
Situation One:
You watered your potted plant with enough water and the soil should
be extremely wet, however the displayed moisture readings is much
lower than 95%(e.g.70%).
Solution:
Enable custom mode, and enter 100%AD setting mode.
Hold the ADD+ button, till the 100%AD value reaches 1000 and roll
over back to 80 ( if your 0%AD is 70 and not changed). Now the
100%AD value will start from 80 while the displayed moisture readings
will be calculated to be 100%.
Hold the ADD+ button till the moisture readings start to decrease until
it shows 95%.
Record the 100%AD value for future use (when batteries changed).
Situation Two:
Instruction Manual
Your potted plant hasn't been watered for very long time and soil is
extremely dry. When at this dry condition, displayed moisture readings
are much higher than 10%(e.g.40%).
Solution:
Enable the custom mode and enter 0%AD setting mode.
Hold the ADD+ button till the moisture readings lowers to 10%(±).
Record the 0%AD value for future use (when batteries changed).
Note: The soil moisture sensor should be inserted totally into the soil
for accurate result.
Operation Steps:
Short press SET after the time setting finished to select “Custom ON”
and it will enter the custom setting mode：
a. Short press ADD+ , enable/disable the custom function
b. If enable the custom function, short press ADD+ to adjust the 0%AD
value from 70-200. The numbers will change rapidly when hold the
ADD+ button.
Instruction Manual
c. Short press SET to enter 100%AD setting mode. short press ADD+
to adjust the 100%AD value from 0%AD+10 ~ 1000.
d. Short press SET to return to the normal mode.
There is no “-“ button available on this item. If you need to enter a
value that is less than the value display, you need to keep press the “+”
button until a rollover happens.
Important Note:
When adjusting, you should look at the displayed moisture readings
change. Stop immediately when the expected moisture readings is
displayed. If you keep pressing the button and the setting value will
be increased beyond its sensing sensitive range, resulting in making
the system much less sensitive. When this happens, please turn off
Instruction Manual
the custom mode and start over the custom calibration procedure.
4. Function
1)
2)
3)
4)
12/24hr digital time display
Current soil moisture.
Every 70 second the unit will receive soil moisture sensor.
Wireless Signal Strength Indicator
During the synchronization, it will reduce one signal segment if it
have not received the signal once from the transmitter. It will
increase one signal segment if it has received the signal once.
Lost the signal
once
Received
once
the
signal
5. Appendix
Moisture grades display on the flower pot icon:
Humidity range: 4%~0%： Display 0 grid moisture
Humidity range: 14%~5%：Display 1 grid moisture
Humidity range: 24%~15%：Display 2 grids moisture
Humidity range: 34%~25%：Display 3 grids moisture
Humidity range: 44%~35%：Display 4 grids moisture
Humidity range: 54%~45%：Display 5 grids moisture
Humidity range: 64%~55%：Display 6 grids moisture
Humidity range: 74%~65%：Display 7 grids moisture
Humidity range: 84%~75%：Display 8 grids moisture
Humidity range: 94%~85%：Display 9 grids moisture
Humidity range: 100%~95%：Display 10 grids moisture
10
Instruction Manual
6. Specifications
•
•
•
•
•
•
Moisture Range:0~100%; Resolution: 1%
0%AD setting range:70~200; Initial value:70
100%AD setting range:0%AD+10~1000; Initial value:500
Frequency: 433 MHz
Update Rate: 70 seconds
Power Consumption: MIN 1Year battery life.
Base station (display console) : 1 x AA battery(not included)
Remote sensor : 1 x AA battery(not included)
7. FCC Statement
Statement according to FCC part 15.19:
This device complies with part 15 of the FCC rules. Operation is
subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including
interference that may cause undesired operation.
Statement according to FCC part 15.21:
Any changes or Modifications not expressly approved by this company
could void the user's authority to operate the equipment.
Statement according to FCC part 15.105:
NOTE: This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communications.
11
Instruction Manual
However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
This device complies with FCC radiation exposure limits set forth for
an uncontrolled environment and it also complies with Part 15 of the
FCC RF Rules. This equipment must be installed and operated in
accordance with provided instructions and the antenna(s) used for this
transmitter must be installed to provide a separation distance of at
least 20 cm from all persons and must not be co-located or operating
in conjunction with any other antenna or transmitter. End-users and
installers must be provided with antenna installation
instructions and consider removing the no-collocation
statement.
12
Instruction Manual
8. Warranty Information
We disclaim any responsibility for any technical error or printing
error, or their consequences.
All trademarks and patents are recognized.
We provide a 1-year limited warranty on this product against
manufacturing defects in materials and workmanship.
This limited warranty begins on the original date of purchase, is valid
only on products purchased and only to the original purchaser of this
product. To receive warranty service, the purchaser must contact us
for problem determination and service procedures.
This warranty covers only actual defects within the product itself, and
does not cover the cost of installation or removal from a fixed
installation, normal set-up or adjustments, claims based on
misrepresentation by the seller or performance variations resulting
from installation-related circumstances.
13

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