HyQuest Solutions WL3100 User manual

HYQUEST SOLUTIONS PTY LTD
Multi Output Dry Transducer - Model WL3100 1ISSUE 15: 4/9/15
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INSTRUCTION MANUAL
DRY PRESSURE TRANSDUCER
MODELS WL3100/WL3100A
HYQUEST SOLUTIONS PTY LTD
PO BOX 332, LIVERPOOL B.C NSW 1871, AUSTRALIA
Phone:(Int.) 612 9601 2022 Fax: :(Int.) 612 9602 6971
Phone:(Nat.) [phone] Fax: :(Nat.) [phone]
Email: [e-mail]
Web: www.h
yq
uestsolutions.com.au
QUALITY SYSTEM
ISO:9001
CERTIFIED

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TABLE OF CONTENTS
1.Introduction........................................................................................3
2.Specification........................................................................................4
3.Installation..........................................................................................6
4.Operation............................................................................................7
5.Error Conditions................................................................................7
6.Maintenance .......................................................................................8
7.External Power...................................................................................9
8.LCD Screen.........................................................................................10
8.1Configuring the WL3100.................................................................................... 12
8.2Sampling Mode – Single, Continuous, Averaging............................................ 13
9.RS 232/SDI-12 Selection....................................................................15
9.1 SDI-12 V1.3 Compliant Command Set...................................................................... 15
9.2 Special SDI-12 Commands.......................................................................................... 17
10.Field Setup Procedure .......................................................................19
11.Power Consumption...........................................................................20
12.Wiring Details.....................................................................................21
APPENDIX A Fine Tuning .............................................................................23
APPENDIX B SDI-12 to RS232 Interface .....................................................27
APPENDIX C Extra SDI-12 Port...................................................................30

HYQUEST SOLUTIONS PTY LTD
Multi Output Dry Transducer - Model WL3100 3ISSUE 15: 4/9/15
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MULTI OUTPUT DRY TRANSDUCER WL3100
1. Introduction
The Hyquest Solutions Multi Output Dry Transducer model WL3100 is a low power, microprocessor controlled
dry transducer designed for field operation to enable measurement of water level. The internal CMOS circuitry
enables the WL3100 to output measured levels in absolute format on an LCD display or as a 4-20mA, RS232 or
SDI-12 signal.
The SDI-12 output allows multiple connection to a single data logging recorder, transmitting at 1200
baud over distance up to 60 metres (200 ft).
When used in conjunction with a Hyquest Solutions Dry Bubble Unit, Model HS-23 or the HS-55 or
HS-40 Compressor Units, it allows the measurement of water head to a fine degree of accuracy and
repeatability.
Note: All units are factory calibrated over their full operating temperature and pressure range in
our Environmental Chamber and Ruska Pressure Calibrator. A calibration certificate is
supplied with each Sensor.
Sintered Filter
Pressure Input

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2. Specification
a) SPECIFICATION - Mechanical
Enclosure:
Dimensions:
Weight:
Isolation Diaphragm:
Operating range:
Over pressure:
Operating Temperature:
Humidity:
Overall Accuracy:
Long Term Stability:
Pressure Connection:
Sensor Vent:
Calibration:
Aluminium diecast weatherproof enclosure IP65
180 x 105 x 100 mm
1.2 kg
31 Stai6 nl Stess eel
0-5, 0-10, 0-15, 0-20, 0-30 metres water head (Imperial units also
available up to 100 feet range).
2.67 xranges
- oC t40 o+70oC (-40 oF to +158 oF) (Excluding LCD Display)
100 no% conn densing
±0.02 % F.S. BSL
Typically ±0.05 % F.S./annum
1/4OTube
Sintered Filter
Over full range against water head.
b) SPECIFICATION - Electrical
Operating Voltage:
Current Loop Operating Voltage:
Insulation:
LCD Backlight
LCD Operating Temperature:
Display:
Parameters:
LCD Operation:
Operating Power:
Options:
Units:
9.0 to 16VDC operation ie. from SDI-12 +12 volt supply
9V to 30V DC for 4-20mA currentloopdrive
(used as a 2-wire current loop transducer)
Greater than100MSat 500 V DC
Powered via SDI-12 port (9.6 to16 VDC)
-20 oC to 70oC (-4 oF to 158 oF)
Water Level, 4-20mArange, timeand date.
User selectable via push buttons on the pressure transducer housing
LCD display is standard with auto shutdown after 35 seconds idle.
10mA from SDI-12 supply while taking a measurement and 3.0mA
between measurements.
All options are user programmable via the SDI-12 interface and
saved in an onboard EEPROM.
Metric or Imperial scaling (selectable)

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Output: RS232, SDI-12 and 4-20mA output.
Note: Proprietary adapter cable needs to be used for RS232 comms via the SDI-12 port. Current drawn from
current loop drive is only that which is needed to drive the 4-20mA loop. See section XII for power
requirement details.
Battery Backup : Internal microprocessor operation as well as data integrity is
guaranteed by a factory fitted lithium battery for 3 years minimum.
Full Scale : Full scale range is dependant upon transducer specified ( i.e 5, 10,
15, 20, 30) metres
Resolution : Fixed 1mm (Metric)
Fixed 0.01 ft (Imperial)

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HS23 Bubble Unit
Or Gas Purge
Compressor
HS55/HS50/HS45
INSTRUMENT
LINE
Sintered Filter
WL3100
Multi Outputs
4-20 mA
SDI-12
RS232
PRESSURE
FITTING
RIVER LINE
FRONT
FERRULE REAR
FERRULE
NUT TUBE
HS23 Bubble Unit
Or Gas Purge
Compressor
HS55/HS50/HS45
INSTRUMENT
LINE
PRESSURE
FITTING
WL3100
Multi Outputs
4-20 mA
SDI-12
RS232
NOTE: Using a leak detector
check for leaks around all the
fittings in your system. A tiny leak
will result in system failure and
erratic resultsmay be produced by
the Pressure Transducer
Turn Clockwise To
Tighten The Nut
Sintered Filter
RIVER LINE
3. Installation
Before connecting the power to the pressure transducer, you need to connect the instrument
line to the pressure transducer as follows:
Undo the nut and remove the ferrules from inside the fitting.
1. Place the nut through the tube and then place the ferrules as shown in the figure2.
Figure2: Pressure Transducer Installation- Part (a)
2. Tighten the nut as shown in the figure3 below.
Figure3: Pressure Transducer Installation- Part (b)
1. Using a leak detector, check for leaks.
2. You are ready now to connect the power and run your WL3100.
Note: A pressure leak anywhere in the system will affect your level reading and produce erratic results.

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4. Operation
The WL3100 Multi Output Dry Transducer powers up and takes a measurement at the following times :
CWhen the “Level” is displayed on the LCD, a reading is taken every 12 seconds and the Level on the
LCD is updated.
CWhen the 4-20mA current loop has power applied, a reading is taken every 12 seconds. The 4-20mA
current loop is updated at the same time.
CWhen the SDI-12/RS232 interface requests a measurement using the ‘M’ or ‘C’ commands.
CWhen the LCD menu “Continuous Meas” is set to YES, a measurement is taken every 12 secs.
5. Error Conditions
If the WL3100 Multi Output Dry Transducer is unable to take a reading (fault condition or loss of +12VDC
supply from SDI-12 port), then an error condition is indicated by :
CThe LCD displaying “Error” as the water level.
CThe 4-20mA current loop increasing to 24mA (indicating the error condition).
CAn SDI-12 measurement request will return “9999.999" as the “level”
All of these readings are outside the normal measurement range.

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6. Maintenance
The WL3100 Multi Output Dry Transducer requires no maintenance, however all connected mechanical
equipment should be periodically checked for cleanliness and ease of operation.
Models prior to 2010 had internal 3.6V AA size lithium batteries that should be replaced when required
(Expected operating life is 3 years minimum).
Figure4: Internal Battery Replacement
Internal Batteries Replacement Instruction:
1. Loosen the 4 screws on the enclosure lid
2. Remove the lid
3. Cut restraining strap
4. Remove and replace batteries one at a time, ensuring polarity is correct, so that processor is not
interrupted (only use 3.6v Lithium AA batteries)
5. Fit a new restraining strap (150mm cable tie)
6. Replace enclosure lid ensuring a proper fit
7. Tighten the 4 screws

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7. External Power
Even though the Multi Output Dry Transducer has an internal lithium battery, an analog measurement can only
be made if +12VDC (9.0V to 16VDC) power is connected. This supplies power to the analog measurement
circuitry.
An adequate 12VDC battery and charger option should be used if the 4-20 mA current loop is to be powered
continuously and independently of the telemetry module or data logging equipment.
Figure5: External Power Connections
4-20 mA loop
(9 to 30 VDC) 9.0 to 16 VDC Power Input for
backlighting and analog circuitry
+ SDI-12 comms

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8. LCD Screen
There are 7 main LCD screens available. Some screens display internal data and some allow parameters to be
changed. The screens are:
LCD SCREEN
DESCRIPTION
WL3100 S/W 7.2
Level 9.392 m Display model, S/W Rev and present river level
Sensor Addr: 2
Sensor ID: A-345 Display Sensor SDI-12 address and 5 digit ID
Comms Type:
SDI-12 Allows the comms type to be selected SDI-12 or RS232
4-20mA Level:
0.0-10.0 m Indicates the 4mA Level and the 20mA Level
Set Level:
12.392 m Allows the present River Level to be preset - internally calculates an offset
Calc Offset:
0.003 m Displays the internally calculated offset generated through the previous Set Level
Sampling Mode :
Single Contin+Avg 3 => the river level is continuously measured and the last 5 values are averaged.
Single=> the river level is only measured when
requested.
Note: When the River Level is “Set”, the difference between the user entered River Level, and the raw data
measured from the transducer is calculated. This calculated offset is saved into non-volatile memory, and is
added to the raw transducer level each time a measurement is taken. In this way all calculations are made
transparent to the operator.
A measurement of the river level is initiated when a button is pressed (LCD is on) OR when “Continuous Meas”
is set to Yes and +12V is present OR when 4-20mA current is present, OR when an SDI-12 Measure command is
received.
There are many other menu items that allow fine tuning of the calibration if this is required, as well as changing
units of measurement (m/ft) and pressure (psi/kPa). Please note the menu tree on the next page should be
examined carefully before embarking through it.

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Menu Tree
Normally the “Scroll” button is used to step to the next menu item indicated by an arrow.
However, when a time (eg. 5 Sec) is indicated above an arrow, the “Select” button is pressed
for the indicated time to access the configuration menu item.

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8.1 Configuring the WL3100
1. If using the SDI-12 interface, set the required address by stepping to
the “Sensor Addr” menu, and pressing the “Select” button and then
use the “Scroll” button to set the address from 0 to 9.
2. If using an SDI-12 logger, make sure the “Comms Type” is set
to SDI-12. If using an RTU with an SDI-12 to RS232 adapter
then set the “Comms Type” to RS232.
3. Use the staff gauge in the river to measure the water level (1.450m)
4. Step to the “Set Level” menu and set it to 1.450m
If operating in SDI-12 mode, setup is complete.
If operating in 4-20mA mode then continue with step 5.
5. Estimate the range over which the water level will change.
(eg. Min level = 1.000m : Max Level = 8.000m)
6. Step to the “4mA / 20mA Level” menu
Set the 4mA level to 1.000m
Set the 20mA level to 8.000m
When the water level is at 1.000m the 4-20mA current will be 4.000mA
When the water level is at 4.500m the 4-20mA current will be 12.000mA
When the water level is at 7.000m the 4-20mA current will be 20.000mA
7. The range in this example is 8.000 – 1.000 = 7.000m
Set the logger range to 7.000m (eg. ML420 range is set with TxR=7.000)
8. The offset in this example is 1.000m
Set the logger offset to 1.000m (eg. ML420 offset is set with RvHR=1.000)
9. Set the logging interval and transducer warmup period in the data logger. There are 2
ways to set the transducer warmup period – if the “Continuous Meas” is set to YES,
then the warmup can be set as low as 1 sec. (Slightly more power is drawn in this
mode as the WL3100 continually takes measurements.) If however, the “Continuous
Meas” is set to NO, then the warmup must be set for about 15 secs.
(eg. Say ML420 interval is 15mins and warmup is 1 sec then TXI=015/01 )
NOTE : Setting the 4-20mA range to the smallest possible will give the best resolution
on a 4-20mA interface !

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8.2 Sampling Mode – Single, Continuous, Averaging
In S/W Rev 7.1 and lower, the last menu item shown on page 12 is “Continuous Mode ?”.
This could either be set to YES or NO.
When “Continuous Mode” is set to “NO” the WL3100 only takes a sample when :
1. The water level is displayed on the LCD or
2. An SDI-12 Measure command is received or
3. The 4-20mA loop power is detected.
When “Continuous Mode” is set to “YES” the WL3100 takes a sample :
1. Every 12 secs. (Continuously)
(This is useful if you use the SDI-12 command 0R0! as it will immediately
return the most recent measurement made within the last 12 secs – which
makes the WL3100 SDI-12 interface the same as the AD375A SDI-12
interface. It can also be useful when using the 4-20mA interface, as the 4-
20mA loop current will be accurately updated 100mS after loop power is
applied – without having to wait 12 secs for a measurement to be made !!)
In S/W Rev 7.2 and higher, the last menu item shown on page 12 is “Sampling Mode”. This
could either be set to Single, Contin+Avg 1, Contin+Avg 2,……..., Contin+Avg 20.
When “Sampling Mode” is set to “Single” the WL3100 only takes a sample when :
1. The water level is displayed on the LCD or
2. An SDI-12 Measure command is received or
3. The 4-20mA loop power is detected.
When “Sampling Mode” is set to “Contin+Avg X” the WL3100 takes a sample :
1. Every 12 secs. (Continuously)
(When a sample is requested, via the display or via SDI-12 or 4-20mA, the last
Xsamples are averaged. If it is known that the water level will change very
slowly, it is advantageous to set X to a high number, so that the last say 20
samples will be averaged. Note that 20 samples will take 20 x 12secs = 240
secs = 4 mins. (So the water level is averaged over a 4 minute period) If it is
known that the water level changes rapidly, then it would be better to set X to a
low number, so that say 2 samples will be averaged.)
The “Contin+Avg 1” mode only averages 1 sample, which at first appearance
doesn’t seem to be very useful – this was included to give the same operation
as the above described “Continuous Mode” set to “YES”. (Read the description
above to see why this mode is useful.)

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Averaging
The following diagram shows what happens when the WL3100 is set to average “5 samples”.
(When in average mode, the WL3100 takes a sample every 12 secs (Each circle represents a
“sample” that is a highly filtered, 24 bit high accuracy, temperature compensated value !)
When a sample is requested (via the LCD, SDI-12 M command or 4-20mA), the next periodic
sample will reply with an average of the previous 5 samples (obviously the number of samples
used to calculate the average will depend upon the setting selected - between 1 and 20).
(If the SDI-12 0R0! command is used, then the samples immediately prior to the command
being received are used to perform the average !)
Sample
re
q
ues
t
Reply is the
average of
the previous
5 samples in
the red
circle
Sample
re
q
ues
t
Reply is the
average of
the previous
5 samples in
the green
circle
Sample
re
q
ues
t
Reply is the
average of
the previous
5 samples in
the blue
circle
12 secs
Sample

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9. RS 232/SDI-12 Selection
The SDI-12 protocol has very strict timing requirements. The operator may use the SDI-12 to RS232 adaptor
cable and then communicate using RS232 from a PC. The “RS232" option must be selected via the LCD and
pushbuttons. In this mode all of the timing/break requirements of the SDI-12 are removed. Commands may be
typed from a terminal program such as “Hyperterm”. (See Appendix B for details of the SDI-12 to RS232
converter)
Note you must use 1200 baud, 7 bits, even parity and no handshaking.
If using an SDI-12 logger you must select the “SDI-12” option via the LCD and pushbuttons.
9.1 SDI-12 V1.3 Compliant Command Set
(CRC commands are implemented)
(Please note the letter ‘a’ in the commands below refer to the SDI-12 address 0, 1, 2,….9)
Name Command Response
Break Continuous
spacing for at least
12 milliseconds
None
Acknowledge Active a! a<CR><LF>
Send Identification aI! allccccccccmmmmmmvvvxxx...xx<CR><LF>
(Refer Note 1.)
Change Address aAb! b<CR><LF>
Address Query ?! a<CR><LF>
Start Measurement aM! or aMC! atttn<CR><LF> (Refer Note 2)
Send Data aD0! a<value><CR><LF> or
a<value><CRC><CR><LF>
Continuous Measurement aR0! or
aRC0! a<value><CR><LF> (Refer Note 3) a<value><CRC><CR><LF>
Start Verification aV! atttn<CR><LF> (Refer Note 4)
Start Concurrent
Measurement aC! or aCC! atttnn<CR><LF> (Refer Note 2)
Note 1.
a13HydrServWL31006.412345<CR><LF>
-- ------------ --------- --- ------
| | | | | |
| | | | | --- 5 digit Sensor ID (eg 12345)(as set in aX4 command)
| | | | --------- S/W Revision (eg 6.4)
| | | ---------------- Model (WL3100)
| | ---------------------------- Company ID (HydrServ)
| ------------------------------------ SDI-12 Version V1.3 Compliant
-------------------------------------- Unit Address

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Note 2.
The measurement command “M” and the concurrent command “C” will both return a time “ttt” of 012 indicating
that the measurement will be ready in 12 seconds. Do not request data within this 12 second window, or an
empty reply will be received. (In accordance with the SDI-12 protocol.) When an “M” command is in progress,
the dry transducer will issue a service request “a<CR><LF>” when the measurement is complete and ready for a
data request. (Again, in accordance with the SDI-12 protocol)
Note 3.
The Continuous Measurement command returns the present River Level.
If the LCD command “Continuous Meas ?” is set to “Yes” then the river level is continuously measured when
12V is present and so the aR0! returns the river level without having to issue an aM! Measure command.
Note 4.
aV! Initiate Verify Command
Test the lithium battery.
The Multi Output Dry Transducer returns a0001<CR><LF> indicating that there is 1 measurement available and
it will be ready in 0 seconds. When the Data command aD0! is issued the dry transducer will reply with :
a+o<CR><LF>
|
----------- Lithium Battery Condition (0=> Battery OK : 1=> Battery Low)
*** PLEASE NOTE ***
For more information on SDI-12 commands, go to the www.sdi-12.org website and download the “SDI-12
Protocol Specification” available on the home page.

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9.2 Special SDI-12 Commands
The following commands conform to the SDI-12 protocol, and allow specific parameters within the WL3100 to
be configured. Care should be taken with some commands, as they may destroy the factory calibration.
aXn! Return data associated with command ’n’. The multi output dry transducer will reply
with a0001<CR><LF> The aDO! command must be issued to get the actual
data.
aXn+xxxx! Set parameter for command ‘n’. The multi output dry transducer will reply with
a0001<CR><LF> The aDO! command must be issued to get the actual data.
Set/Get Current Value
aX0! Get the river level (River level from last measurement).
aX0+0012.345! Set the river level to +12.345 m (or ft).
Get Multi Output Dry Transducer Pressure
aX1! Get the Pressure. eg. +0004.524 psi (or kPa)
Get/Set the 4mA Level
aX2! Get the 4mA Level.
aX2+0002.5! Sets the 4mA Level to 2.5m (or ft)
When the water level is 2.5m then the 4-20mA loop will pass 4mA
Get/Set the 20mA Level
aX3! Get the 20mA Level.
aX3+0020.0! Sets the 20mA Level to 20.0m (or ft)
When the water level is 20.0m then the 4-20mA loop will pass 20mA
Set/Get ID Number
aX4! Get the dry transducer ID.
aX4+12345! Set the dry trasnducer ID. Acceptable values 0-65535. This value appears in the
Identify command.
Set/Get Time
aX5! Get the dry transducer Time.
aX5+0135! Set the dry transducer Time to 01:35 (24 hour clock)
Set/Get Date
aX6! Get the dry transducer Date.
aX6+011204! Set the dry transducer Date to 1-Dec-2004.
Set/Get the User Factor
aX7! Get the User Factor.
aX7+0.705373! Set the User Factor to 0.705373 m/psi
Increment the 4mA Calibration
aX96+00! Examine the present 4mA Calibration without altering it.

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(This also saves the calibration)
aX96+05! Increment the 4mA Calibration by 5 steps
(This should be done while accurately measuring the current on the 4-20mA loop)
(If the calibration is changed, always finish by sending aX96+00! to save it)
Increment the 20mA Calibration
aX97+00! Examine the present 20mA Calibration without altering it.
(This also saves the calibration)
aX97+03! Increment the 20mA Calibration by 3 step
(This should be done while accurately measuring the current on the 4-20mA loop)
(If the calibration is changed, always finish by sending aX97+00! to save it)
Set/Get the Lo Pressure (NOTE: This command could destroy the factory calibration)
aX98! Get the value used to set the Low Pressure.
aX98+0000.702! Set the Low Pressure to 0.702 psi (or kPa)
(Perform a measure aM! before setting the low pressure - see note below)
Set/Get the Hi Pressure (NOTE: This command could destroy the factory calibration)
aX99! Get the value used to set the High Pressure.
aX99+0016.317! Set the High Pressure to 16.317 psi (or kPa)
The normal sequence of setting the Lo or Hi pressure would be :
(NOTE : Accurate pressure measuring equipment is required for this procedure)
1. Set the pressure to the Lo end of the scale and measure with accurate equipment
2. Perform a measure aM!
3. Perform a Get Pressure aX1! and then Get Data aD0!
4. If the pressure is different to that measured, perform a Set Lo (or Hi) Pressure
5. Repeat steps 2, 3 and 4 for Lo pressure until the returned value matches the value on the accurate
measuring equipment.
6. Increase the pressure to the Hi end of the scale and repeat steps 1 to 5 for Hi pressure until the
returned value matches the value on the accurate measuring equipment

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10. Field Setup Procedure
1. Install the WL3100 Multi Output Dry Transducer as per mechanical installation procedures.
2. Press either of the two push buttons on the dry transducer to activate the LCD display.
3. Use the scroll button to scroll through the menu to “Set Level”and press the select button.
4. Use the select button to move the blinking cursor to the desired digit position (that needs to be changed),
and use the scroll button to increment the value. When the rightmost digit is at the desired value press
the select button to save the value. Press select button again to start with the left most digit again.
5. After the select button is used to save a value ie. Water level, date, etc., then pressing the scroll button
will continue to step you through the menu as before.
6. The 4-20mA current loop will be continuously updated as the various parameters are changed.
7. The 4mA water level and the 20mA water level can be set separately. (See the menu tree structure in the
LCD Operation section)
8. The various parameters may also be set by the SDI-12 “special command” set, via the SDI-12 Input
connection, or the RS-232 connection if a laptop is available using a simple terminal emulation program
whereby ASCII characters are typed (adhering to the SDI-12 Ver 1.3 protocol). Note: If the commands
are being typed by the operator, the “Comms Type” must be set to RS232. In this mode the strict SDI-12
timing is ignored. An adapter cable needs to be used in this mode. See section Appendix B.

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11. Power Consumption
There are several different power supply options and the current consumption depends on which option is used.
NOTE : **** Analog measurements cannot be taken unless 12V power is connected. ****
The 4-20mA loop current is supplied by the logger / RTU measuring the 4-20mA and does not draw any current
from the SDI-12 12V power supply !
NO EXTERNAL
POWER -
NO ANALOG
MEASUREMENT
SDI-12
12V POWER
(ALLOWS ANALOG
MEASUREMENT)
ACTIVE
4-20 mA
LOOP CURRENT
Mode Internal Lithium Battery
(Prior to 2010 only) Internal Lithium
Battery
SDI-12
Power
Asleep 3 to 30 FA 0 Stays awake when 12V
is present
3.5mA continuous
(not measuring)
4-20 mA
RS232 Comms < 2 mA for 45 sec 0 17 mA for 1.5 sec
(while measuring)
3.5 mA otherwise
4-20 mA
SDI-12 Comms < 2 mA for 20 sec 0 17 mA for 1.5 sec
(while measuring)
3.5 mA otherwise
4-20 mA
LCD on < 8 mA for 30 sec 0 70 to 83 mA @ 12V
(Backlighting on) 4-20 mA