Seametrics INW PT2X Instructions Manual

Download

INW PT2X

Pressure/Temperature Smart Sensor

and Data Logger Instructions

For PSIG

sensors, refer

to page 18

regarding

desiccant

use!

PROUDLY MADE IN THE

USA

ISO

9001:2008

TABLE OF CONTENTS

General Information

General Information ........................................................................................................................................................................Page 3

Dimensions .........................................................................................................................................................................................Page 3

Specications .....................................................................................................................................................................................Page 4

How Pressure Sensors Work ........................................................................................................................................................Page 5

Initial Inspection and Handling ...................................................................................................................................................Page 6

Do’s and Don’ts .................................................................................................................................................................................Page 6

Installation

Connecting External Power ...........................................................................................................................................................Page 7

Connecting a PT2X to a Computer ............................................................................................................................................Page 7

Cable Wiring .......................................................................................................................................................................................Page 8

Installing Aqua4Plus or Aqua4Plus Lite Software ................................................................................................................Page 8

Using Without Aqua4Plus or Aqua4Plus Lite Software .....................................................................................................Page 8

Battery Life Calculator ....................................................................................................................................................................Page 9

Installing the Sensor ........................................................................................................................................................................Page 9

Desiccant Use .....................................................................................................................................................................................Page 9

Grounding Issues ..............................................................................................................................................................................Page 9

Settings and Calibration

Preparation..........................................................................................................................................................................................Page 10

Submergence .....................................................................................................................................................................................Page 11

Depth-to-Water.................................................................................................................................................................................Page 11

Elevation Above Sea Level ............................................................................................................................................................Page 12

Staff Gauge .........................................................................................................................................................................................Page 12

Operation

Collecting Data with Aqua4Plus and Aqua4Plus Lite .........................................................................................................Page 13

Real Time Monitor ............................................................................................................................................................................Page 13

Setting up Data Recording ...........................................................................................................................................................Page 13

Retrieving Data ..................................................................................................................................................................................Page 13

Viewing Data ......................................................................................................................................................................................Page 13

Exporting Data ................................................................................................................................................................................... Page 14

A Word about Units .........................................................................................................................................................................Page 14

Direct Read Modbus/SDI-12

Setting Units for Direct Read .......................................................................................................................................................Page 14

Power Consideration .......................................................................................................................................................................Page 15

Reading via Modbus RTU ..............................................................................................................................................................Page 15

Reading via SDI-12...........................................................................................................................................................................Page 16

Maintenance

Removing Debris from End Cone ...............................................................................................................................................Page 18

Desiccant Tubes.................................................................................................................................................................................Page 18

Sensor/Cable/End Connections ..................................................................................................................................................Page 19

Changing Batteries ...........................................................................................................................................................................Page 19

Appendix: DTW Reference

Entering Depth-to-Water Reference after Data Collection .............................................................................................. Page 23

Troubleshooting

Problems/Probable Causes/Things to Try ............................................................................................................................... Page 26

Warranty

Seametrics Limited Warranty .......................................................................................................................................................Page 27

PT2X INSTRUCTIONS

IF USING ALKALINE BATTERIES—PREVENT BATTERY LEAKAGE!

PT2X sensors are typically shipped with lithium batteries. If, however, you are using alkaline batteries, be aware that under some circumstances alkaline batteries can leak, causing damage to the sensor. To prevent leakage, the following is recommended. (Does not apply to lithium batteries.)

• Change the batteries at least every 18 months.

• If the sensor will not be deployed for 3 months or more, remove the batteries.

Seametrics • 253.872.0284 Page 2 inwusa.com

GENERAL INFORMATION

PT2X INSTRUCTIONS

The INW PT2X Smart Sensor is an integrated data logger and pressure/temperature sensor and is ideal for monitoring groundwater, well, tank, and tidal levels, as well as for pump and slug testing. This sensor networks with all of the INW Smart Sensor family. Its compatibility with INW’s Wireless Data Collection technology makes it ideal for remote monitoring.

The PT2X is a microprocessor based digital intelligent sensor designed to measure and record pressure, temperature, and time, using low power, battery operated circuitry.

Pressure is measured with an extremely rugged and stable piezo-electric media-isolated pressure element combined with a 16-bit analog-to-digital converter. This provides extremely accurate and stable pressure input into the microprocessor on the circuit board.

This industry standard digital RS485 interface device records up to 520,000 records of pressure/level, temperature, and time data, operates with low power, and features easy-touse software with powerful features. Constructed with 316

stainless steel or titanium, PTFE, and uoropolymer, this

sensor provides high-accuracy readings in rugged and

corrosive eld conditions.

Two internal 1.5V AA batteries power the PT2X. (Auxiliary power supplies are available for data intensive applications.) The unit is programmed using INW’s easyto-use Aqua4Plus or Aqua4Plus Lite control software. Once programmed the unit will measure and collect data on a variety of time intervals.

Several PT2Xs, or a combination of PT2Xs and other INW Smart Sensors, can be networked together and controlled from one location, either directly from a single computer or via INW’s Wireless Data Collection System.

While most will use the PT2X with our free, easy-to-use Aqua4Plus Lite or Aqua4Plus software, it is by no means limited to that software. You can use your own Modbus

RTU or SDI-12 software or logging equipment to read measurements, thus tying into your existing systems and databases.

Dimensions

Cableless

0.25” (0.6

cm) Shorter

0.28” (0.7 cm)

12.18” (30.9 cm)

Battery Version

8.37” (21.3 cm)

Non-Battery Version

Diameter

0.75” (1.9 cm)

Seametrics • 253.872.0284 Page 3 inwusa.com

GENERAL INFORMATION

PT2X INSTRUCTIONS

Specications*

Housing & Cable Weight 0.8 lb. (0.4 kg)

Body Material Acetal & 316 stainless or titanium Wire Seal

Material Cable Submersible: polyurethane, polyethylene, or ETFE (4 lb./100 ft., 1.8 kg/30 m) Desiccant 1-3 mm indicating silica gel Field Connector Standard

Temperature Operating Range Recommended: -15˚ to 55˚C (5˚ to 131˚F) Requires freeze protection kit if using pressure option in water

Storage Range Without batteries: -40˚ to 80˚C (-40˚ to 176˚F)

Power Internal Battery Two lithium ‘AA’ batteries - Expected battery life: 18 months at 15 min. polling interval (may vary do to

Auxiliary 12 Vdc - Nominal, 6-16 Vdc - range

Communication Modbus® RS485 Modbus® RTU, output=32bit IEEE oating point

SDI-12 SDI-12 (ver. 1.3) - ASCII

Logging Memory 4MB - 520,000 records

Logging Types Variable, user-dened, proled Logging Rates 8x/sec maximum, no minimum Baud Rates 9600, 19200, 38400 Software Complimentary Aqua4Plus and Aqua4Plus Lite Networking 32 available addresses per junction (Address range: 1 to 255) File Formats .a4d and .csv (also .xls in Windows 8 and earlier)

Output Channels Temperature Depth/Level¹

Element Digital IC on board Silicon strain gauge transducer, 316 stainless or Hastelloy Accuracy ±0.5°C — 0° to 55°C (32˚ to 131˚F)

Resolution 0.1˚C 0.0034% FS (typical) Units Celsius, Fahrenheit, Kelvin PSI, FtH₂O, inH₂O, mmH₂O, mH₂O, inH₂O, cmHg, mmHg, Bars, Bars,

Range -15˚ to 55˚C (5˚ to 131˚F) Gauge

Compensated --- 0˚ to 40˚C (32˚ to 104˚F) Max operating pressure 1.1 x full scale Over pressure protection 3x full scale up to 300psi - for > 300psi (650 ft or 200 m) contact factory Burst pressure 1000 psi (approx. 2000 ft or 600 m) Environmental IP68, NEMA 6P

Fluoropolymer and PTFE

below freezing.

environmental factors)

±2.0°C — below 0°C (32˚F)

±0.05% FSO (typical, static) ±0.1% FSO (maximum, static)

(B.F.S.L. 20˚C)

kPa

PSI: 12, 5, 15, 30, 50, 100, 300

FtH₂O: 2.32, 12, 35, 69, 115, 231, 692

Absolute³

mH₂O: 0.72, 3.5, 10.5, 21, 35, 70, 210

PSI: 30, 50, 100, 300

FtH₂O: 35, 81, 196, 658 mH₂O: 10, 24, 59, 200

*Specications subject to change. Please consult out web site for the most current data (inwusa.com). Modbus is a registered trademark of Schneider Electric.

1 Higher pressure ranges available upon request 2 ±0.25% accuracy FSO (max) at this range 3 Depth range for absolute sensors has 14.7 PSI subtracted to give actual depth allowed.

Seametrics • 253.872.0284 Page 4 inwusa.com

GENERAL INFORMATION

PT2X INSTRUCTIONS

How Pressure Sensors Work

Liquids and gasses do not retain a xed shape. Both have the ability to ow and are often referred to as uids. One fundamental law for a uid is that the uid

exerts an equal pressure in all directions at a given level. Further, this pressure increases with an increasing depth of

“submergence”. If the density of a uid remains constant

(noncompressible...a generally good assumption for water at “normal” pressures and temperatures), this pressure increases linearly with the depth of “submergence”.

We are all “submerged” in the atmosphere. As we increase our elevation, the pressure exerted on our bodies decreases

as there is less of this uid above us. It should be noted

that atmospheric pressure at a given level does vary with changes in the weather. One standard atmosphere

(pressure at sea level at 20º C) is dened to be 14.7 PSI

(pounds per square inch).

There are several methods to reference a pressure measurement. Absolute pressure is measured with respect to an ideal vacuum (no pressure). Gauge pressure is the most common way we express pressure in every day life and is the pressure exerted over and above atmospheric pressure. With this in mind, gauge pressure (Pg) can be expressed as the difference between the absolute pressure (Pa) and atmospheric pressure (Patm):

Water Line

P = Patm + kd

Patm

“A”

Pressure Diagram: See Detail A.

Pg = Pa - Patm.

To measure gauge pressure, atmospheric pressure is subjected to one side of the system and the pressure to be measured is subjected to the other. The result is that the differential (gauge pressure) is measured. A tire pressure gauge is a common example of this type of device.

Recall that as the level of submergence increases (in a

noncompressible uid), the pressure increases linearly.

Also, recall that changes in weather cause the absolute atmospheric pressure to change. In water, the absolute pressure (Pa) at some level of depth (d) is given as follows:

Pa = Patm + kd

where k is simply a constant (i.e.: 2.307 feet of water = 1 PSI)

INW’s standard gauge submersible pressure devices utilize a vent tube in the cable to allow the device to reference atmospheric pressure. The resulting gauge pressure

measurement reects only the depth of submergence.

That is, the net pressure on the diaphragm is due entirely to the depth of submergence.

Seametrics • 253.872.0284 Page 5 inwusa.com

Absolute pressure is given as Pa = Patm + kd

(where k is 2.307 feet of water)

GENERAL INFORMATION

PT2X INSTRUCTIONS

Initial Inspection and Handling

Upon receipt of your smart sensor, inspect the shipping package for damage. If any damage is apparent, note the signs of damage on the appropriate shipping form. After opening the carton, look for concealed damage, such as a cut cable.

If concealed damage is found, immediately le a claim with the carrier.

Check the etched label on the sensor to be sure that the proper range and type were provided. Also check the label attached to the cable at the connector end for the proper cable length.

Do’s and Don’ts

Do handle sensor with care

   

Do store sensor in a dry, inside area when not in use

Do install a desiccant tube if using a gauge sensor

   

Do install sensor so the connector end is kept dry

Don’t drop into well

Lower gently to prevent damage

Seametrics • 253.872.0284 Page 6 inwusa.com

Don’t scrape cable over edge of well

May nick or fray the cable

Don’t bend cable sharply

May close off vent tube and/or weaken internal wires

Don’t support sensor with the connector

Use a strain relief device

INSTALLATION

PT2X INSTRUCTIONS

Connecting External Power

The PT2X comes with two 1.5V AA internal batteries.

If auxiliary power is desired, you can use a 6–16 VDC supply that can provide 15 mA. Connect to Vaux++ (pin 1 - white) and Ground (pin 5 - blue) or contact INW for auxiliary power supplies.

Connecting the PT2X to a Computer

Cabled sensors are terminated with a weather-resistant connector. Cableless sensors are terminated with a weatherresistant connector that is inside a screw-cap. Connect the weather-resistant connector to your computer’s USB port as shown below.

USB to RS485

Adapter

Screwcap

Sensor

Cableless

Conguration

USB Port

PC or Laptop

Computer

Connecting sensor to your computer using

INW’s USB to RS485 adapter.

Aqua4Plus and Aqua4Plus Lite communicate with the sensor using the USB to RS485 adapter cable. This cable requires drivers to be installed on your computer. If you

are connected to the Internet when you rst plug in the

cable, it will normally obtain and install the correct drivers automatically. If this does not happen, or if you do not have Internet connection, you can use Aqua4Plus or Aqua4Plus Lite to install the drivers. In Aqua4Plus, select Install USB/ RS485 Drivers from the Utilities menu; in Aqua4Plus Lite,

select the same from the Program Conguration menu.

Select your operating system, and then click Install.

Alternate Connection Options

INW recommends connecting the sensor to your computer using the INW USB cable. However, when using Aqua4Plus, the sensor can also be connected using an RS232 serial port or a USB-to-Serial cable, as described below. (Note: Aqua4Plus Lite can only communicate using the INW USB cable.)

Connecting via RS232 Serial Port

Connect the weather-resistant connector to your computer’s serial port as shown below.

Interface Cable

Screwcap

Sensor

Cableless

Conguration

Sensor

RS485/RS232 Adapter

Serial Port

PC or Laptop

Computer

Connecting sensor to your computer using

an RS485/RS232 adapter and an interface cable.

Connecting with a USB/Serial Adapter

USB-to-Serial cables are readily available from many electronics and computer stores, as well as numerous sites on the Internet. INW has tested and recommends the Keyspan USA-19HS. Install as follows:

• Plug into USB port.

• Install the drivers provided with the particular unit.

• Determine the port number to which the adapter is assigned.

• Right-click on My Computer.

• From the popup menu, select Manage to open

the Computer Management window.

• On left panel, click on Device Manager.

• On right panel, double-click on Ports.

• A list of active COM ports will be displayed. Note

the COM number assigned to the adapter you just installed.

For example:

• Close Manager.

• Connect to the sensor.

• On the Aqua4Plus software, select the COM port noted above. (If you do not see your new COM port in the dropdown box, open the Communications dialog box from the Options menu. Increase the Highest COM port number, up to a maximum of

15.)

USB Port

PC or Laptop

Computer

Screwcap

Sensor

Cableless

Conguration

Interface Cable

USB-to-Serial Adapter

RS232/RS485 Adapter

Sensor

Connecting sensor to your computer using

a USB to Serial adapter and an interface cable.

Seametrics • 253.872.0284 Page 7 inwusa.com

INSTALLATION

PT2X INSTRUCTIONS

Cable Wiring

If you buy your cabled sensor with a connector installed

(the normal conguration), no further wiring is needed. For reference purposes, the rst three diagrams below

show the pinout from the connector for various scenarios.

The nal diagram shows the pinout if you bought your

sensor without a connector for use with SDI-12.

White Purple Yellow Brown Blue Shield

1 2 3 4 5

5-Pin Connector

12 VDC+ (Vaux) Modbus DModbus D+ Digital I/O (Not used) 12 VDC- (GND)

For Modbus® with rmware lower than 2.0

— with 5-pin connector

White Purple Yellow Brown Blue Shield

1 2 3 4 5

5-Pin Connector

12 VDC+ (Vaux) Modbus DModbus D+ SDI-12 (Not used) 12 VDC- (GND)

For Modbus® with rmware 2.0 or higher

— with 5-pin connector

White Purple Yellow Brown Blue Shield

1 2 3 4 5

5-Pin Connector

12 VDC+ (Vaux) Modbus D- (Not used) Modbus D+ (Not used) SDI-12 Signal 12 VDC- (GND)

For SDI-12 with rmware 2.0 or higher

— with 5-pin connector

White Purple Yellow Brown Blue Shield

12 VDC+ (Vaux) Modbus D- (Not used) Modbus D+ (Not used) SDI-12 Signal 12 VDC- (GND) Earth ground

Installing Aqua4Plus or Aqua4Plus Lite Software

The PT2X comes with the Aqua4Plus or Aqua4Plus Lite host software that is installed on your PC or laptop. Use this software to program the datalogger, to retrieve data from the logger, to view collected data, and to export data to

external les for use with spreadsheets or databases.

Refer to the software manuals for details on installing and using Aqua4Plus or Aqua4Plus Lite.

Setting the Continuous Rate

The PT2X can take readings more often than once per second. This is known as a “continuous rate.” Set the

continuous rate for the PT2X from the Congure Menu |

Sensor Continuous Rate.

Firmware Version Available Settings

1.0 and above Exactly 2, 4, or 8 readings per second

0.22, 0.23, 0.24 Approximately 2,3,4,5,6, or 10 readings per second

0.18 Approximately 10 readings per second

To use the continuous rate during recording, enter a “c” or a zero in the Polling Interval on the Logging Schedule.

Setting the Filter

The PT2X has the ability to apply ltering to incoming data

in order to smooth out minor variations in readings. This

lter can be from 1 (no ltering) to 8 (maximum ltering.) Different versions of rmware have different ltering

options as shown below. For further information on PT2X

data ltering, see INW application note Filter Response on PT2X Smart Sensor.

Firmware Version Filtering

1.3 and above Can be set from 1 (no ltering) to 8 (maximum

ltering) from the Advanced option on the Congure Menu — defaults to 1. (Cannot be

reset from Aqua4Plus Lite.)

1.0 - 1.2 Filter is set to 1 (no ltering). Adjustable ltering

can be obtained by upgrading to a higher

rmware version.

0.24 Filter is permanently set to 1 (no ltering).

0.23 and lower Filtering is permanently set to 8 (maximum).

For SDI-12 with rmware 2.0 or higher

— without connector

Seametrics • 253.872.0284 Page 8 inwusa.com

Using the PT2X Without Aqua4Plus or Aqua4Plus Lite

Most users will use the PT2X with INW’s Aqua4Plus or Aqua4Plus Lite software. However, the PT2X is quite versatile, communicating via either Modbus® or SDI-12 interfaces, allowing you to do the following:

• Read a PT2X via Modbus® using your own software.

• Read a PT2X via SDI-12 protocol.

• Display readings from a PT2X on a panel meter.

If you want to use one of these methods, see page 14.

INSTALLATION

PT2X INSTRUCTIONS

Battery Life Calculator

IMPORTANT NOTE for PT2X sensors with rmware 2.13 or

higher!

PT2Xs with rmware version 2.13 and higher have a battery

life calculator that is set at the factory when batteries are

rst put in the sensor. If the battery life calculator is not

reset, the remaining life information will be incorrect.

If you need to replace the batteries, see the Maintenance section in this manual for replacement information and for information on resetting the battery life calculator.

Installing the Sensor

The PT2X measures pressure. The most common application is measuring liquid levels in wells and tanks. In order to do this, the sensor must be installed below the water level at a

xed depth. The installation depth depends on the range

of the sensor. One (1) PSI is equal to approximately 2.31 feet of water. If you have a 5 PSI sensor, the range is 11.55 feet of water and the sensor should not be installed at a depth below 11.55 feet. If the sensor is installed below its maximum range, damage may result to the sensor and the output reading will not be correct.

Note: If you are using an absolute sensor and you want to enter a depth-to-water reference after data is collected, then see Appendix before proceeding.

• Lower the sensor to the desired depth.

• Fasten the cable to the well head using a weather proof strain-relief system. When securing a vented cable, make sure not to pinch the cable too tightly or the vent tube inside the cable jacket may be sealed off.

• Take a measurement to insure the sensor is not installed below its maximum range.

Be sure the supplied cap is securely placed on the weatherresistant connector at the top of the cable. Do not install such that the connector might become submerged with changing weather conditions. The connector can withstand incidental splashing but is not designed to be submerged.

For vented sensors, install the sensor so that the desiccant

tube will not ood or lie in water.

sensor is being installed in a uid environment other than water, be sure to check the compatibility of the uid with

the wetted parts of the sensor.

Desiccant Use

On vented sensors a desiccant tube prevents moisture in the air from being sucked into the vent tube, which can cause erratic readings and sensor damage.

The desiccant tube is lled with blue silica gel beads. A locking barb and a hydrophobic water lter are attached to the end of the desiccant tube. This lter prolongs the life of

the desiccant as much as three times over a desiccant tube

without the lter.

Install the sensor so that the desiccant tube and cable

connector will not ood or lie in water.

The desiccant is a bright blue color when active and dry. See Maintenance section for care and changing of desiccant.

Grounding Issues

It is commonly known that when using electronic equipment, both personnel and equipment need to be protected from high power spikes that may be caused by lightning, power line surges, or faulty equipment. Without

a proper grounding system, a power spike will nd the path

of least resistance to earth ground—whether that path is through sensitive electronic equipment or the person operating the equipment. In order to ensure safety and prevent equipment damage, a grounding system must be used to provide a low resistance path to ground.

When using several pieces of interconnected equipment, each of which may have its own ground, problems with noise, signal interference, and erroneous readings may be noted. This is caused by a condition known as a Ground Loop. Because of natural resistance in the earth between

the grounding points, current can ow between the points,

creating an unexpected voltage difference and resulting erroneous readings.

The single most important step in minimizing a ground loop is to tie all equipment (sensors, dataloggers, external power sources, and any other associated equipment) to a single common grounding point. Seametrics recommends

connecting the shield to ground at the connector end.

The sensor can be installed in any position; however, when it leaves the factory it is tested in the vertical position. Strapping the sensor body with tie wraps or tape will not hurt it. INW can provide an optional 1/4” NPT input adapter which is interchangeable with the standard end cone for those applications where it is necessary to directly attach the sensor to a pipe, tank, or other pipe port. If the

Seametrics • 253.872.0284 Page 9 inwusa.com

SETTINGS AND CALIBRATION

To adjust sensor offsets, calibration, depth-to-water, elevation, and other various settings, select the Settings

and Calibration option on the Congure Menu (Aqua4Plus)

or click the Settings button (Aqua4Plus Lite). In the Settings and Calibration window, click on the channel you want to

adjust. Specic instructions for each channel are displayed

in the right panel. Settings and calibration values can only be changed when there is no data on the sensor. Be sure to retrieve any data and then erase the data on the sensor before proceeding.

The temperature channel rarely needs adjustment. If you think your temperature channel needs calibrating, contact your service representative.

Before leaving the factory, your PT2X has been inspected using precision instruments. However, you may want to change some of the settings for the pressure channel for the following reasons:

• To set a specic zero-reference point for submergence

• To return values as depth-to-water

• To return values as elevation in relation to sea-level

• To return values relative to a staff gauge

PT2X INSTRUCTIONS

Sample Setting and Calibration Window

Preparation

• Run Aqua4Plus Lite or Aqua4Plus and scan for sensors.

• On the Sensor Map, click the sensor you want to adjust.

• From Aqua4Plus Lite:

• Select the units you want to use for

measurements, i.e., psi, feet of water, inches of

mercury, etc. Set this from the Congure Menu | Program Conguration | Set Computer Display

Units.

• Open the Settings and Calibration window by

clicking on the Settings button.

• From Aqua4Plus:

• Select the units you want to use for

measurements, i.e., psi, feet of water, inches of

mercury, etc. Set this from the Options Menu |

Display Units.

• Open the Settings and Calibration window from

the Congure Menu | Settings and Calibration.

Step-by-step instructions will be displayed on the right side of the window.

The basic setting/calibration process for pressure channels is as follows. See following pages for detailed instructions.

1. Select the Pressure channel.

2. Enter a Channel Label, if desired.

3. Select the desired type of setting. A picture will display illustrating the type of selection. Available types:

• Depth/Submergence

• Depth-to-Water

• Elevation

• Staff Gauge

4. Supply any requested information.

5. Within the Calculator, supply any requested information.

6. Click the Measure button to get a current measurement from the sensor.

7. Click the Apply button to accept the new slope and offset.

8. Click the OK button, to save your changes to the sensor.

Seametrics • 253.872.0284 Page 10 inwusa.com

SETTINGS AND CALIBRATION

PT2X INSTRUCTIONS

Submergence One-Point Calibration:

-- Computing Offset --

• Place sensor in the uid you are measuring at a precise known level.

• In the Ref box for the rst point, enter this level or pressure.

• Click rst Measure button.

• When readings have stabilized, click the Accept button in the pop-up box.

-- Applying Offset --

• Click the Apply button to apply calculated offset.

• The calculated offset will be transferred to the offset eld near the top of the window.

• Click OK to save the value to the sensor!!!

Two-Point Calibration:

-- Compute First Calibration Point --

• Place sensor in the uid you are measuring at a precise known level.

• In the Ref box for the rst point, enter this level or pressure.

• Click rst Measure button.

• When readings have stabilized, click the Accept button in the pop-up box.

-- Compute Second Calibration Point --

• Place sensor in the uid you are measuring at a second precise known level.

• In the Ref box for the second point, enter this level or pressure.

• Click second Measure button.

• When readings have stabilized, click the Accept button in the pop-up box.

-- Applying Slope and Offset --

• Click the Apply button to apply calculated values.

• The calculated slope and offset will be transferred to the

elds near the top of the window.

• Click OK to save the value to the sensor!!!

-- Verifying Settings --

• Using the Real Time Monitor, take a few readings to verify it is reading as expected.

Depth-to-Water

When using the Depth-to-Water setting, you may want to change the channel label at the top of the Settings window to read “Depth” or “Depth-to-Water”.

Note: If you have a cableless sensor or want to enter a depth-to-water reference after data collection for an absolute cabled sensor, see Appendix.

Cabled Sensors Only

Important! Be sure to use the same units for all

measurements in this calculation. For example, if you have the program set to display in Ft H2O then be sure to enter the barometric pressure and depth-to-water readings in Ft H2O.

-- Computing Offset --

• If you are using an absolute sensor, enter the current barometric pressure in the Barometric box.

• Place the sensor in the well.

• Using a water level indicator or other measuring device, determine the depth-to-water from the top of the well (or other reference point).

• Enter this value in the DTW box.

• Click the Measure button.

• When readings have stabilized, click the Accept button in the pop-up box.

-- Applying the Slope and Offset --

• Click the Apply button to apply the calculated values.

• The calculated slope and offset will be transferred to the

elds near the top of the window.

• Click OK to save the values to the sensor!!!

-- Verifying Settings --

• Using the Real Time Monitor, take a few readings to verify it is reading as expected.

IMPORTANT NOTE!

When taking readings on an absolute sensor, you will need to ADD the current barometric pressure to get depth-to-water. See the Barometric Compensation Utility Application Note (LT-14304) for information on how the Barometric Utility can help automate this process.

IMPORTANT NOTE!

When taking readings on an absolute sensor, you will need to SUBRACT the current barometric pressure to get submergence. See the Barometric Compensation Utility Application Note (LT-14304) for information on how the Barometric Utility can help automate this process.

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SETTINGS AND CALIBRATION

PT2X INSTRUCTIONS

Elevation Above Sea Level

When using the Elevation setting, you may want to change the channel label at the top of the Settings window to read “Elevation”.

Important! Be sure to use the same units for all measurements on this screen. For example, if you have the program set to display in Ft H2O then be sure to enter the elevation, barometric pressure, and depth-to-water in Ft H2O.

-- Computing Offset --

• Enter the elevation of the top of the well (or other reference point).

• If using an absolute sensor, enter the current barometric pressure in the Barometric box.

• Place the sensor in the well.

• Using a water level indicator or other measuring device, determine the depth-to-water from the top of the well (or other reference point).

• Enter this value in the DTW box.

• Click the Measure button.

• When readings have stabilized, click the Accept button in the pop-up box.

-- Applying Offset --

• Click the Apply button to apply the calculated offset.

• The calculated offset will be transferred to the offset eld near the top of the window.

• Click OK to save the values to the sensor!!!

-- Verifying Settings --

• Using the Real Time Monitor, take a few readings to verify it is reading as expected.

IMPORTANT NOTE!

When taking readings on an absolute sensor, you will need to SUBRACT the current barometric pressure to get elevation. See the Barometric Compensation Utility Application Note (LT-14304) for information on how the Barometric Utility can help automate this process.

Staff Gauge

When using the Staff Gauge setting, you may want to change the channel label at the top of the Settings window to read “Staff Gauge”.

Important! Be sure to use the same units for all measurements on this screen. For example, if you have the program set to display in Ft H2O then be sure to enter the barometric pressure and staff gauge readings in Ft H2O.

-- Computing Offset --

• If using an absolute sensor, enter the current barometric pressure in the Barometric box.

• Place the sensor in the well.

• Note the current level on your staff gauge.

• Enter this value in the Staff box.

• Click the Measure button.

• When readings have stabilized, click the Accept button in the pop-up box.

-- Applying Offset --

• Click the Apply button to apply the calculated offset.

• The calculated offset will be transferred to the offset eld near the top of the window.

• Click OK to save the values to the sensor!!!

-- Verifying Settings --

• Using the Real Time Monitor, take a few readings to verify it is reading as expected.

IMPORTANT NOTE!

When taking readings on an absolute sensor, you will need to SUBRACT the current barometric pressure to get a staff gauge reading. See the Barometric Compensation Utility Application Note (LT-14304) for information on how the Barometric Utility can help automate this process.

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OPERATION

PT2X INSTRUCTIONS

Collecting Data with Aqua4Plus & Aqua4Plus Lite

Following is a brief overview on using Aqua4Plus/ Aqua4Plus Lite to collect data. Please refer to the software

instruction manuals for further details on conguring and

using Aqua4Plus/Aqua4Plus Lite.

Real Time Monitor

• Click Single to get a single reading.

• Click Start to get a reading once a second for 60 seconds.

• Click Stop to stop the reading.

Note: These are snapshot readings and are not recorded

on the sensor. On sensors with rmware versions lower than 2.0, the pressure is displayed in the rst column and temperature in the second. On sensors with rmware

versions 2.0 and higher, the temperature is displayed in the

rst column and pressure in the second.

Retrieving Data from the Sensor/Datalogger

• Click on the le you want to retrieve.

• Click the tool button.

• Select a le location.

• Click Save.

• Click Start.

Select the data le to retrieve.

Viewing Data

• Click the or tool button to view data as a table.

• Click the tool button to view data as a graph.

• Navigate to the desired le, then click the Open button.

The Real Time Monitor gives a snapshot of the

current readings on the sensor.

Setting up Data Recording

Click the tool button. A Logging Schedule Window will open. Refer to the software instruction manuals for details in describing your schedule. Click the Start button to save the schedule to the sensor and begin recording.

Using the Logging Schedule Window, describe the test steps for your particular test.

The File Display window displays your data in a tabular format.

The Graph window displays your data on an X Y coordinate graph.

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OPERATION/DIRECT READ MODBUS/SDI-12

PT2X INSTRUCTIONS

Exporting Data to .csv or .xls Files*

• Click the or tool button to view data as a table.

• Click on the tool button.

• Select a le location and enter a name for the le.

• Select a le type.

• Click Save.

* When using Windows 10, les can only be exported in .csv format. They can then be opened manually from Excel or any other spreadsheet or

database program

A Word About Units

Readings from the PT2X Smart Sensor can be displayed in various units, such as PSI, Ft. H2O, or mm H2O for pressure, or degrees Celsius or degrees Fahrenheit for temperature.

Select the units you want from the Options | Display Units menu or from the Congure Menu | Program Conguration | Set Computer Display Units.

DIRECT READ (MODBUS® OR SDI-12)

While the PT2X comes with INW’s easy to use Aqua4Plus or Aqua4Plus Lite software, you can also use standard Modbus® RTU or SDI-12 equipment to easily take readings, so as to tie into your existing equipment or networks.

You may need to use Aqua4Plus/Aqua4Plus Lite to make a few settings prior to directly reading the PT2X with your equipment. These might include the units for the returned values and/or the Modbus baud rate. These are described in the following sections.

For Modbus direct read, you must have PT2X rmware 1.5 or higher. For SDI-12, you must have rmware 2.0 or higher.

Setting Units for Direct Read

By default, the PT2X uses the following units:

Temperature Degrees Celsius Pressure PSI

If you want to change to different units, for example, degrees Fahrenheit for temperature or feet of water for pressure, set these units using Aqua4Plus/Aqua4Plus Lite.

• From Aqua4Plus select Direct Read Units from the

Congure | Advanced menu.

• From Aqua4Plus Lite select Set Direct Read Units

from the Sensor congure menu.

• On the popup box, click the down-arrows next to the channel types you want to change, and then select the units you want.

• Click OK.

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Select the units for your direct read

measurements, whether Modbus or SDI-12.

Once set, these units are saved on the sensor and direct readings, either via Modbus or via SDI-12, will return values using these units. (Note: These settings do not affect the units used on the Aqua4Plus/Aqua4Plus Lite display. Refer to the software manual for details.)

DIRECT READ MODBUS/SDI-12

PT2X INSTRUCTIONS

Power Consideration

If your sensor does not have internal batteries and is not powered continuously by an auxiliary power supply, then you must turn power on to the sensor at least two seconds before a reading is to be taken to allow the sensor to warm up.

Reading Via Modbus® RTU

Setting Baud Rate

Your PT2X comes congured to communicate at 38,400

baud, with 8 data bits, one stop bit, and no parity. The sensor can also be set to 19,200 or 9600 baud, if needed for your application. You must use Aqua4Plus, not Aqua4Plus Lite, to make baud rate changes.

If needed, set your PT2X to the desired baud rate as follows:

• Click on the Congure menu, and then select Advanced.

• From the yout menu, select Sensor Baud Rate. (You may be asked for a password. Enter admin.)

• On the popup box, click the down-arrow, select the baud rate you need, and then click OK.

Once you have changed the baud rate on the PT2X, you will not be able to talk to it with Aqua4Plus until you change the baud rate for Aqua4Plus, as follows:

Measurement Timing

When you request a reading via Modbus, the sensor wakes up, returns the current values in the registers, and then starts taking new readings and updating the registers. After approximately 10 seconds, if no more readings have been requested, the sensor goes back to sleep.

Because of this, the rst reading you get will be old. If you

are taking readings at intervals of less than 10 seconds,

simply ignore the rst reading — all remaining readings will

be current. On the other hand, if you are taking readings at intervals of greater than 10 seconds, take a reading, ignore it, wait one second, take another reading. Record this second reading.

Data Format

The data is returned as 32-bit IEEE oating-point values, highword rst, also referred to as big-endian or oat

inverse.

For further information and detailed Modbus examples, see INW application note, “Reading INW Smart Sensors Using Modbus RTU” available from our web site at inwusa. com.

• Click the Options menu, and then select Baud Rate.

• On the popup box, click the down-arrow, select the baud rate you need, and then click OK.

The current Aqua4Plus baud rate is displayed in the lower right corner of the main Aqua4Plus window.

Taking Measurements

Reading Registers

Read measurements using Modbus function 03 – Read Holding Registers. Readings are located in two registers each, starting at address 62592. (PT2X register addressing is zero based, i.e., starts at zero. If your equipment uses one based addressing, you will need to add one to the register addresses.)

Addresses for PT2Xs with rmware lower than 2.0

Zero based One based Pressure 62592 62593 Temperature 62594 62595

Addresses for PT2Xs with rmware 2.0 or higher

Zero based One based Temperature 62592 62593 Pressure 62594 62595

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OPERATION

PT2X INSTRUCTIONS

Reading Via SDI-12

Note: The default units setting for pressure is PSI. The default units setting for temperature is Celsius. To change these, use the Direct Read Units in the Aqua4Plus/Aqua4Plus Lite Control Software.

Addressing

Default SDI-12 Address: 0

SDI-12 Command Nomenclature

<a> = Sensor address {crc} = SDI-12 compatible 3-character CRC <cr> = ASCII carriage return character <lf> = ASCII line feed character

highlighted values indicate variable data

All SDI-12 requests consist of a command followed by a request for values. Some software or equipment may combine these, making the second one unnecessary. Refer to your software or equipment documentation for details.

Request Response

Address

Command

Request Response

Address

Time until

(in seconds)

response

Address

values read

Request for

Address

Returned value(s)

SDI-12 Commands

Sensor Identication

<a>I! <a>13 INWUSA PT2X 213ssssssssss<cr><lf> Note: 213 will change to reect current rmware version.

Acknowledge Active, Address Query

ssssssssss = device serial number

Carriage Return

Linefeed

# of values to

be returned

Carriage Return

Linefeed

Change Address

<a>A<b>! <b><cr><lf> Change address to <b>

Request Measurement

<a>M! <a>0022<cr><lf> Request all measurements <a>D0! <a>+22.0512+12.0512<cr><lf> Read temperature and pressure

<a>M1! <a>0021<cr><lf> Request temperature measurement only <a>D0! <a>+22.0512<cr><lf> Read temperature

<a>M2! <a>0021<cr><lf> Request pressure measurement only <a>D0! <a>12.0512<cr><lf> Read pressure

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OPERATION

Request Measurement with CRC

<a>MC! <a>0022<cr><lf> Request all measurements with CRC <a>D0! <a>+22.0512+12.0512{crc}<cr><lf> Read temperature and pressure

<a>MC1! <a>0021<cr><lf> Request temperature measurement only with CRC <a>D0! <a>+22.0512{crc} <cr><lf> Read temperature

<a>MC2! <a>0021<cr><lf> Request pressure measurement only with CRC <a>D0! <a>12.0512{crc} <cr><lf> Read pressure

Concurrent Measurement

<a>C! <a>0022<cr><lf> Request all measurements <a>D0! <a>+22.0512+12.0512<cr><lf> Read temperature and pressure

<a>C1! <a>0021<cr><lf> Request temperature measurement only <a>D0! <a>+22.0512<cr><lf> Read temperature

PT2X INSTRUCTIONS

<a>C2! <a>0021<cr><lf> Request pressure measurement only <a>D0! <a>12.0512<cr><lf> Read pressure

Concurrent Measurement with CRC

<a>CC! <a>0022<cr><lf> Request all measurements with CRC <a>D0! <a>+22.0512+12.0512{crc}<cr><lf> Read temperature and pressure

<a>CC1! <a>0021<cr><lf> Request temperature measurement only with CRC <a>D0! <a>+22.0512{crc} <cr><lf> Read temperature

<a>CC2! <a>0021<cr><lf> Request pressure measurement only with CRC <a>D0! <a>12.0512{crc} <cr><lf> Read pressure

For further information and SDI-12 examples, see INW application note, “PT2X SDI-12 Interface Specication” available from our web site at inwusa.com.

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MAINTENANCE

PT2X INSTRUCTIONS

Removing Debris from End Cone

At times mud, silt, or other debris may foul the water inlets to the pressure element. The end cone can be removed to clean out the debris.

Twist Open Housing

1. Gently twist off end cone portion only - do not twist off pressure element!

2. Remove debris. Do not poke anything into the sensor. This can damage the sensor element and void the warranty.

3. Replace and retighten the end cone.

Pressure element

Water inlet

End cone

Gently twist off the end cone and carefully remove debris

Set Screw Housing

1. Remove the two set screws at the bottom of the housing tube, using a 1/16” allen wrench.

2. Gently remove the end cone.

3. Remove debris. Do not poke anything into the sensor. This can damage the sensor element and void the warranty.

4. Replace the end cone and secure with set screws.

Desiccant Tubes

On vented sensors, inspect the desiccant tube at least once every two months. The desiccant tube prevents moisture in the air from being sucked into the vent tube, which can cause erratic readings and sensor damage.

The desiccant tube is lled with blue silica gel beads. A locking barb and a hydrophobic water lter are attached to the end of the desiccant tube. This lter prolongs the life of

the desiccant as much as three times over a desiccant tube

without the lter.

Install the sensor so that the desiccant tube and cable

connector will not ood or lie in water.

The desiccant is a bright blue color when active and dry. As moisture is absorbed the color will begin to fade, becoming a light pink, which indicates full saturation and time to replace. Replacement desiccant and hydrophobic

lters can be purchased from Seametrics.

To Change the Desiccant:

• Pulling gently remove the black tube tting from the clear desiccant tube.

• Using needle-nose pliers, remove the dark gray foam plug. Do not discard the plug.

• Dump out the old desiccant beads and rell with new desiccant beads – tapping desiccant tube

frequently during relling to ensure that the beads

are fully seated in tube.

• Push the foam plug back into the tube.

• Reinsert the black tting.

Pressure element

Water inlet

Set screw

End cone

Remove end cone by removing set screws.

Gently clean out debris.

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MAINTENANCE

PT2X INSTRUCTIONS

Sensor

There are no user-serviceable parts, other than the batteries. If problems develop with sensor stability or accuracy, contact INW. If the transducers have been exposed to hazardous materials, do not return them

without notication and authorization.

Cable

Cable can be damaged by abrasion, sharp objects, twisting, crimping, crushing, or pulling. Take care during installation and use to avoid cable damage. If a section of cable is damaged, it is recommended that you send your sensor back to replace the cable harness assembly.

End Connections

The contact areas (pins & sockets) of the connectors will wear out with extensive use. If your application requires repeated connections other types of connectors can be provided. The connectors used by INW are not submersible, but are designed to be splash-resistant.

Changing Batteries

Battery Type: Two 1.5V AA batteries—Lithium or Alkaline

(lithium recommended)

IMPORTANT!

Because changing the batteries involves opening the water-tight seal, this must be done in a clean, dry environment to avoid contamination or moisture damage to the circuitry.

IF USING ALKALINE BATTERIES —PREVENT BATTERY LEAKAGE!

not apply to lithium batteries.)

• Change the batteries at least every 18 months.

• If the sensor will not be deployed for 3 months or more, remove the batteries.

Battery Life Calculator (Firmware 2.13 or higher)

When changing batteries, it is important to reset the Battery Life Calculator. If the battery life calculator is not reset, the remaining life information will be incorrect.

Access the Battery Life Calculator from the Congure

Menu - Battery Information and Reset. If you have put in new batteries, checkmark the box “I have just put in fresh batteries.” Click Save and Close.

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Be sure to reset the Battery Life Calculator

when changing batteries!

MAINTENANCE

PT2X INSTRUCTIONS

Tips

• Never place a tool on the sensor body, it is very thin and will deform causing leaks at o-ring seals and potentially crushing the circuit board!

• Always twist the sensor body off the top cap assembly rather than twisting the top cap assembly off of the sensor body.

• For cabled sensors, always clamp the sensor on the swaged area when applicable, the shoulder above it will allow you to press down without the worry of the sensor slipping out of the clamping device.

• If the sensor body is slippery or you are unable to grip it hard enough to twist, try a piece of rubber cabinet liner for additional friction.

There is a black, compressible square ring near the top of the sensor. This ring acts as a spring to lock the cable in. This needs to be compressed in order to allow removal of the top cap. Once this ring is compressed, a gentle counterclockwise twist is all that is needed to remove the cable from the sensor body. Compressing the black square ring does take force, twisting does not.

HousingTop cap

By Hand—cabled version only

1. Tightly grasp the top cap in one hand.

2. Brace your hand against something such as a table or the ground. (Do not allow the cable to be pinched against the brace.)

Continue to Removing the Housing on the next page.

With Vise—recommended method

Cabled Sensor

1. If possible, use a set of soft jaws as shown to prevent marring the surfaces of the top cap assembly.

2. Place the sensor in a vise clamping gently on the swaged area. You do not need to clamp the vise very hard.

Continue to Removing the Housing on the next page.

Swage Knurling Black square ring

Cabled Sensor

Top cap

Knurling Black square ring

Housing

Cableless Sensor

Care must be taken to compress the black square ring before attempting to twist the housing. Forceful twisting

of the housing can permanently damage the sensor.

Securing the Sensor

In order to compress the black square ring, the sensor must be secured so that you can apply downward pressure to compress the ring. This can be done by holding in your hand, using a vise, or using pliers, as follows.

Cabled Sensor—gripping on swage

Cableless Sensor

1. If possible, use a set of soft jaws as shown to prevent marring the surfaces of the top cap assembly.

2. Remove the cableless top cap.

3. Place the sensor in a vise clamping gently on the knurled area. You do not need to clamp the vise very hard.

Continue to Removing the Housing on the next page.

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Cableless Sensor—gripping on knurled area

MAINTENANCE

PT2X INSTRUCTIONS

With Pliers or Vise Grips—good for eld use

Cabled Sensor

1. Grasp the pliers on the swaged area (do not grab the knurled diameter).

2. Find a hard edge and place the tips or side of the jaws of the pliers onto this edge as shown. This will allow you to press down with your weight to compress the square ring.

Continue to Removing the Housing in next column.

Removing the Housing

1. With your free hand, grasp the sensor body. Press down to compress the square ring. Twist gently. Once the body begins to twist, you can stop the compression action.

2. Finish gently twisting until the sensor body is removed.

3. Carefully disconnect the wiring connector inside from the circuit board in the top cap.

Replacing Batteries and Resealing Sensor

1. Gently pull wiring to one side in order to allow batteries to fall out. Shake gently if needed.

2. Replace batteries with button (+) facing open end.

3. Reinstall wiring connector — it only goes in one way, so make sure not to force it.

Cabled Sensor

Cableless Sensor

1. Leave the cableless cap on in order to protect the pins inside.

2. Grasp the pliers on the knurled area tightly being careful to avoid grabbing the knurled cap.

3. Find a hard surface and place the cableless cap down onto it. This will allow you to press down with your weight to compress the square ring.

Continue to Removing the Housing in next column.

Pull wires gently to the side to allow battery removal

Connector connected properly

Cableless Sensor

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MAINTENANCE

4. Hold the top cap assembly at 90° to the housing opening as shown. Depress the spring with your

ngertip and tuck the wiring into the cutaway on

the circuit board with your thumb to protect it while being installed back into the housing.

Wires tucked into slot and spring tucked into housing

5. Rotate the top cap assembly into the opening in the housing being very careful not to nick or pinch any wires.

PT2X INSTRUCTIONS

Push top cap in before twisting and locking

6. Gently press down until the assembly stops and then twist it into place. It will click in and decompress the gasket when it is fully engaged.

Properly completed—black ring uncompressed

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APPENDIX: DTW REFERENCE

PT2X INSTRUCTIONS

Entering DTW Reference after Data Collection

(Using the Barometric Compensation Utility)

Note: Aqua4Plus versions prior to 1.9.10 and Aqua4Plus Lite versions prior to 2.1.4 do not have the depth-to-water option in the Barometric Compensation utility. To enter depth-towater information for absolute sensors after data collection in earlier versions, see the “Compensating INW Absolute Sensor Readings on Cableless Sensors” application note or install a newer version of the software. Both the application note and the current software are available on our web site at inwusa.com.

If using a cableless sensor, i.e., without a direct read cable, you cannot use the automatic depth-to-water offset provided in Aqua4Plus/Aqua4Plus Lite. There may also be instances where you do have a direct read cable on an absolute sensor but want to enter a depth-to-water offset after data collection.

The Barometric Compensation Utility uses barometric data to compensate the data readings from an absolute sensor in order to give a true pressure or level measurement and also has the option to enter a depth-to-water offset after the data has been collected.

2. Set the logging schedule on the Barometric unit.

Remember to check-mark Set Sensor Clock on the Logging Schedule.

3. Set the logging schedule on the Pressure/Level sensor. Remember to check-mark Set Sensor Clock on the Logging Schedule.

4. Deploy the sensor. Note that the sensor displacement may change the depth-to-water, especially in small diameter wells. Take that into consideration when taking your depth-to-water reading. You may want to take the reading prior to deploying the sensor, depending on how fast or slow your well returns to equilibrium after deploying sensor.

5. If you are going to manually enter a depth-to-water measurement after data collection, then use an alternate water level measuring device, such as a dip meter, and carefully obtain the current depth-

to-water from the top of the well or other specic

location. Record this value and the exact time

in your eld notes. You will need this later when

adjusting the data after export.

Data Retrieval and Compensation

TIPS:

• When starting the logging, be sure to check-mark the box Set Sensor Clock. This will ensure that sensors are set to the same time.

• For best results in most situations, there should be at least one barometric reading within 60 minutes of each sensor reading. In areas where the barometric pressure changes rapidly, set the same recording frequency for both the barometric and

1. When done collecting data, retrieve the data from the pressure/level sensors and the barometric sensor.

2. Open the Barometric Compensation Utility. (Aqua4Plus: on the Utility Menu. Aqua4aPlus Lite:

on the Program Conguration Menu.) The following

dialog box will open:

submerged sensors.

Setup

(Cabled sensors can be deployed any time before Step 5. Cableless sensors should be deployed at Step 4.)

1. Preparing for depth-to-water offset on pressure/ level sensor (for Cableless sensors or cabled sensors where you want to manually enter a depth-to-water after data collection)

• Open the Settings and Calibration Window

Barometric Compensation File Selection Box

• Under Select Setting Type, select Depth/

Submergence.

• Verify that the slope is NOT negative. If it is, that

means someone has entered a depth-to-water offset. You will need to manually set the Slope to 1 and the Offset to 0.

• If the slope is not negative, but a calibration

slope and/or offset had been entered, this is ne.

The program will take these into consideration

3. First, select one or more absolute data les to be converted. Click the top Browse button and

navigate to the le(s) you want to convert. To select one le, simply double-click on the le name. To select two or more les, click on the rst le, then

hold down the Ctrl key and click on each of the

other les you want to convert. Then click OK.

and no changes need to be made here.

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APPENDIX: DTW REFERENCE

PT2X INSTRUCTIONS

4. Next, select the barometric le you wish to use for the compensation. Click on the lower Browse

button and navigate to the le you want to use. Double-click on the le name.

5. If you do NOT want to enter a manual depth-towater reading, skip to the next step, otherwise, checkmark the box “I want to provide a depth-towater reference”. One of the following boxes will display, depending on whether you are converting

one or many data les.

Enter Reference for a Single Sensor

Enter Reference for Multiple Sensors

Viewing the Compensated Data

1. To view your newly compensated les, click on the Open button . A File Open box will be displayed.

File Open Dialog Box

2. On the le type box, click the down arrow and select “Aqua4Plus Compensated Files.” The box will then

list your compensated les. (If you select “Aqua4Plus Data Files” instead, original data les will be listed.) Double-click on the le you want to open. Your data

will display in the File Display window. Columns represent the following:

For each sensor, enter the date/time and measurement you took previously. If you are converting several

les, you have the option to enter depth-to-water

offsets for each sensor or to checkmark the box in the Skip column, if not needed for a particular sensor. Click OK to continue.

6. To begin the conversion, click OK.

7. Aqua4Plus/Aqua4Plus Lite will take each record in

the absolute data le, apply the depth-to-water

offset (if applicable) and the barometric reading closest in time to that reading, and then create a

new, converted le. The original data les will have an extension of .a4d. The compensated les will have the same le names but with an extension of .a4b. A compensated le will be created for each original data le.

Rec#: Record number in the original data

le

Date/Time: Date and time of sample from

original data le

Pressure: Barometrically compensated

pressure

Temperature: Temperature

If the barometric le being used does not have a

reading within one hour of the date/time for a record

in the data le, that record(s) will be displayed in red.

3. To view your data as a graph, click the Graphing button . Graphs will show the compensated pressure values. (Refer to the graphing section of the software instruction manual for details on using graphing features.)

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APPENDIX: DTW REFERENCE

4. To export your data to a coma separated value le or an Excel le, click the Export button . Exports will show general le information and calibration values for both the original data le and the barometric le that was used to do the conversion.

The data will be displayed in the following columns.

Rec#: Record number in the

original data le

Date/Time: Date and time of sample

from original data le

Pressure: Barometrically

compensated pressure Temperature: Temperature Sensor Pressure: Pressure from the original

data le (absolute

pressure) Barometric Date/Time: The time of the reading

in the barometric le that

was used for each line in

the data le.

PT2X INSTRUCTIONS

Exported Data from the Compensated File

Seametrics • 253.872.0284 Page 25 inwusa.com

TROUBLESHOOTING

Problem Probable Causes Things to try…

PT2X INSTRUCTIONS

Software will not

Loose cable Make sure all cable connections are secure communicate with sensor

Contacts in connector loose Be sure all wires are securely fastened inside the

USB driver not installed See Connecting the PT2X to a Computer in

Incorrect USB or COM port selected If using Aqua4Plus, be sure USB is selected in

Seametrics INW PT2X Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual