1130 User Guide: Difference between revisions

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__NOINDEX__
<metadesc>The Phidgets pH/ORP Adapter connects to any of our pH or ORP probes to an Analog Input or VINT Hub port.</metadesc>
[[Category:UserGuide]]
[[Category:UserGuide]]
==Getting Started==
==Getting Started==
{{UgSensorIntro|1130|pH/ORP Adapter|Voltage Input port}}
*{{CT|pHORPProbe|compatible pH/ORP probe}}


===Checking the Contents===
{{UGbox|
'''You should have received:'''
* A pH/ORP adapter board
* A sensor cable
|
'''In order to test your new Phidget you will also need:'''
* A PhidgetInterfaceKit 8/8/8
* A USB cable
* A pH or ORP electrode
||}}


===Connecting the Pieces===
Next, you will need to connect the pieces:
{{UGbox|
[[Image:1130_0_Connecting_The_Hardware.jpg|500px|right|link=]]
#Connect the pH/ORP Adapter Board to the Analog Input #6 on the PhidgetInterfaceKit 8/8/8 board using the sensor cable. In this example, we are using a pH electrode.
# Connect the 1130 to the HUB0000 with the Phidget cable.
#Connect the electrode to the adapter board using the BNC connector.
# Connect the pH/ORP probe to the 1130.
#Use the DIP switch to select pH or ORP to correspond to the type of electrode you are using.  
# Use the DIP switch to select pH or ORP to correspond to the type of electrode you're using.
#Connect the InterfaceKit 8/8/8 to your PC using the USB cable.
# Connect the HUB0000 to your computer with the USB cable.
|
[[File:1130_0_Connecting_The_Hardware.jpg|400px|link=]]
||}}


===Testing Using Windows 2000 / XP / Vista / 7===
<br clear="all">
{{UGIntroDone|1130}}


{{UGwin}}
==Using the 1130==
{{UGcontrolpanelSensor|1130|HUB0000}}


===Running Phidgets Sample Program===
{{UGSensorVoltageInput|1130|pH/ORP}}


{{UGwin2|'''InterfaceKit-full'''}}
{{UGbox6|
Double Click on the [[File:Ph.jpg|link=]] icon to activate the Phidget Control Panel and make sure that the '''Phidget InterfaceKit 8/8/8''' is properly attached  to your PC. 
|[[File:1018_2_Control_Panel_Screen.jpg|400px|link=]]
|
#Double Click on '''Phidget InterfaceKit 8/8/8''' in the Phidget Control Panel to bring up InterfaceKit-full and check that the box labelled Attached contains the word True.
#Make sure that the Ratiometric box is NOT Ticked.
#View the unconverted pH value inside the Analog In boxes. At a pH level of 7 or with a neutral ORP, the SensorValue will be 500.
#You can adjust the input sensitivity by moving the slider pointer.
#Click on the Sensors button to bring up the Advanced Sensor Form.
|
[[File:Sensor_InterfaceKit_Screen_421.jpg|400px|link=]]
|
#In the Sensor 6 box, select the 1130 - pH Adapter (pH) from the drop down menu. Alternatively, if you are using an ORP electrode, choose 1130 - pH Adapter (ORP).
#The pH level measured by the sensor is shown here.
#Formula used to convert the analog input SensorValue into pH (or ORP).
|
[[File:1130 0 Advanced Sensor Form Screen.jpg|link=|400px]]
}}
===Testing Using Mac OS X===
{{UGmac| | }}
===Using Linux===
{{UGlinux}}
===Using Windows Mobile / CE 5.0 / CE 6.0===
{{UGce}}


==Technical Details==
==Technical Details==
===Measuring the pH===
===Measuring the pH===
To determine the pH of a solution, make sure the DIP switch on the board is flipped to the pH side. Given the SensorValue from the Phidget InterfaceKit, the following formula can be applied:  
{{UGSensorFormula|pH}} To determine the pH of a solution, make sure the DIP switch on the board is flipped to the pH side. Given the voltage from the sensor, the following formula can be applied:  




<math>
<math>
\text{pH = 0.0178} \times \text{SensorValue} - 1.889
\text{pH} = 3.56 \times \text{Voltage} - 1.889
</math>
</math>




This formula assumes that the solution is at 25 degrees Celsius.  Depending on the temperature of the solution and on the actual pH level, the SensorValue can change dramatically. To incorporate temperature (in degrees Celsius) for added accuracy, the following formula can be used:
This formula (and the Phidget library ''Sensor Value'' formula) assumes that the solution is at 25°C.  Depending on the temperature of the solution and on the actual pH level, the output voltage can change dramatically. To incorporate temperature (in °C) for added accuracy, the following formula can be used:




<math>
<math>
\text{pH = 7 }- \frac{2.5 - \frac{SensorValue}{200}}{0.257179 + 0.000941468 \times \text{Temperature}}
\text{pH = 7 }- \frac{2.5 - \text{Voltage}}{0.257179 + 0.000941468 \times \text{Temperature}}
</math>
</math>


<br clear="all">
The following example is to give an idea of how the temperature affects the output voltage:
{|class ="wikitable" style="text-align: center;width: 50%;margin:auto"
|style="background:#f0f0f0;"|'''Temperature (°C)'''
|style="background:#f0f0f0;"|'''pH'''
|style="background:#f0f0f0;"|'''Voltage (V)'''
|-
|0
|2
|1.21
|-
|25
|2
|1.095
|-
|100
|2
|0.74
|-
|style="background:#f0f0f0;" colspan="3" |
|-
|0
|8
|2.76
|-
|25
|8
|2.78
|-
|100
|8
|2.85
|}


The following example is to give an idea of how the temperature affects the SensorValue.  A solution with a pH of 2 at a temperature of 25 degrees Celsius yields a SensorValue of 219. At 100 degrees Celsius, the SensorValue decreases to 148, and at 0 degrees celsius, the SensorValue reports 242. A solution with a pH of 8 with a temperature of 0, 25 and 100 degrees Celsius gives a SensorValue of 551, 556 and 570, respectively.  It can be seen that the temperature has a greater affect on solutions that have a pH further away from the reference pH of 7. Additionally, temperature affects the impedance of the glass electrode, and can result in increased errors if not properly calibrated. If you want to monitor the temperature of the solution, you can use a thermocouple. You’ll need to add some sort of protective shielding  to the thermocouple if you’re using acidic or basic solutions, though. Check out our thermocouple interfaces for more information.
As shown above, temperature has a greater impact on solutions that have a pH further away from the reference pH of 7. Temperature also affects the impedance of the glass electrode, and can result in increased errors if not properly calibrated. If you want to monitor the temperature of the solution, you can use a thermocouple. You'll need to add some sort of protective shielding  to the thermocouple if you’re using acidic or basic solutions, though. Check out our {{CT|TCInterface|thermocouple interfaces}} for more information.


===Measuring Oxidation/Reduction Potential (ORP)===
===Measuring Oxidation/Reduction Potential (ORP)===
To determine the ORP of a solution, make sure the DIP switch on the board is flipped to the ORP side.  Given the SensorValue from the PhidgetInterfaceKit, the following formula can be applied:
{{UGSensorFormula|ORP}} To determine the ORP of a solution, make sure the DIP switch on the board is flipped to the ORP side.  Given the voltage from the sensor, the following formula can be applied:




:<math>
:<math>
\text{ORP (V)} = \frac{2.5 - \frac{\text{SensorValue}}{200}}{1.037}
\text{ORP (V)} = \frac{2.5 - \text{Voltage}}{1.037}
</math>
</math>


Line 96: Line 88:


===Words of Caution===
===Words of Caution===
'''The pH Adapter Board should be used to measure solutions taht are 'electrically quiet'.'''
The 1130 should be used to measure solutions that are electrically quiet. Measuring pH in electrically noisy environments such as tanks with mixing pumps, and even other measuring devices is not recommended.
Measuring pH in electrically noisy environments such as tanks with mixing pumps, and even other measuring devices is not recommended.


===Choosing Electrodes===
===Choosing Electrodes===
Review the data sheet for the electrode you have selected for your application to ensure that it complies with the device specifications of the pH Adapter Board. The important specification is the output voltage of the electrode. Many electrodes will work but it is important to verify compliance before connecting an electrode to the Adapter Board. We have reviewed the following electrodes, and found that they can be used with the pH Adapter Board.  This is by no means a comprehensive list, but can be used as a comparison with other electrodes if necessary.
Review the data sheet for the electrode you have selected for your application to ensure that it complies with the device specifications of the 1130. The important specification is the output voltage of the electrode. Many electrodes will work but it is important to verify compliance before connecting an electrode to the 1130. In fact, any type of sensor that uses a BNC connector and complies with the voltage range of the 1130 should work. We have reviewed the following electrodes, and found that they can be used with the 1130.  This is by no means a comprehensive list, but can be used as a comparison with other electrodes if necessary.


{| border = 1
{|class ="wikitable" style="text-align: center;margin:auto"
| align="center" style="background:#f0f0f0;"|'''Manufacturer'''
|style="background:#f0f0f0;"|'''Manufacturer'''
| align="center" style="background:#f0f0f0;"|'''Web Page'''
|style="background:#f0f0f0;"|'''Part Number'''
| align="center" style="background:#f0f0f0;"|'''Part Number'''
|-
|-
| Omega||www.omega.com||PHE13XX, PHE14XX, ORE1311, ORE1411
| [https://www.omega.com Omega] || PHE13XX, PHE14XX, ORE1311, ORE1411
|-
|-
| Cole-Parmer||www.coleparmer.com||EW-59001, EW27003
| [https://www.coleparmer.com Cole-Parmer] || EW-59001, EW27003
|-
|-
| Mettler-Toledo||www.mt.com||InLab (BNC) Series
| [https://www.mt.com Mettler-Toledo] || InLab (BNC) Series
|}
|}


{{UGotherint}}


{{UGasens}}
{{UGasens}}


==Product History==
===Further Reading===
{{UGhist}}
 
{{UGrow|March 2010 |0 |N/A |Product Release }}
For more information on pH and ORP probes, check the [[PH/ORP Sensor Guide]].
 
{{UGnext|}}

Latest revision as of 16:59, 1 June 2023


Getting Started

Welcome to the 1130 user guide! In order to get started, make sure you have the following hardware on hand:


Next, you will need to connect the pieces:

1130 0 Connecting The Hardware.jpg
  1. Connect the 1130 to the HUB0000 with the Phidget cable.
  2. Connect the pH/ORP probe to the 1130.
  3. Use the DIP switch to select pH or ORP to correspond to the type of electrode you're using.
  4. Connect the HUB0000 to your computer with the USB cable.


Now that you have everything together, let's start using the 1130!

Using the 1130

Phidget Control Panel

In order to demonstrate the functionality of the 1130, we will connect it to the HUB0000, and then run an example using the Phidget Control Panel on a Windows machine.


The Phidget Control Panel is available for use on both macOS and Windows machines. If you would like to follow along, first take a look at the getting started guide for your operating system:


Linux users can follow the getting started with Linux guide and continue reading here for more information about the 1130.

First Look

After plugging in the 1130 into the HUB0000, and the HUB0000 into your computer, open the Phidget Control Panel. You will see something like this:

HUB0000 Panel.jpg


The Phidget Control Panel will list all connected Phidgets and associated objects, as well as the following information:

  • Serial number: allows you to differentiate between similar Phidgets.
  • Channel: allows you to differentiate between similar objects on a Phidget.
  • Version number: corresponds to the firmware version your Phidget is running. If your Phidget is listed in red, your firmware is out of date. Update the firmware by double-clicking the entry.


The Phidget Control Panel can also be used to test your device. Double-clicking on an object will open an example.

Voltage Input

Double-click on a Voltage Input object in order to run the example:

1018 Sensors VoltageInput.png


General information about the selected object will be displayed at the top of the window. You can also experiment with the following functionality:

  • Modify the change trigger and/or data interval value by dragging the sliders. For more information on these settings, see the data interval/change trigger page.
  • Select the 1130 from the Sensor Type drop-down menu. The example will now convert the voltage into pH/ORP automatically. Converting the voltage to pH/ORP is not specific to this example, it is handled by the Phidget libraries, with functions you have access to when you begin developing!



Technical Details

Measuring the pH

The Phidget libraries can automatically convert sensor voltage into pH by selecting the appropriate SensorType. See the Phidget22 API for more details. To determine the pH of a solution, make sure the DIP switch on the board is flipped to the pH side. Given the voltage from the sensor, the following formula can be applied:



This formula (and the Phidget library Sensor Value formula) assumes that the solution is at 25°C. Depending on the temperature of the solution and on the actual pH level, the output voltage can change dramatically. To incorporate temperature (in °C) for added accuracy, the following formula can be used:



The following example is to give an idea of how the temperature affects the output voltage:

Temperature (°C) pH Voltage (V)
0 2 1.21
25 2 1.095
100 2 0.74
0 8 2.76
25 8 2.78
100 8 2.85

As shown above, temperature has a greater impact on solutions that have a pH further away from the reference pH of 7. Temperature also affects the impedance of the glass electrode, and can result in increased errors if not properly calibrated. If you want to monitor the temperature of the solution, you can use a thermocouple. You'll need to add some sort of protective shielding to the thermocouple if you’re using acidic or basic solutions, though. Check out our thermocouple interfaces for more information.

Measuring Oxidation/Reduction Potential (ORP)

The Phidget libraries can automatically convert sensor voltage into ORP by selecting the appropriate SensorType. See the Phidget22 API for more details. To determine the ORP of a solution, make sure the DIP switch on the board is flipped to the ORP side. Given the voltage from the sensor, the following formula can be applied:



ORP electrodes give a typical range of -2V to 2V, where the positive values are for oxidizers and the negative values are for reducers.

Words of Caution

The 1130 should be used to measure solutions that are electrically quiet. Measuring pH in electrically noisy environments such as tanks with mixing pumps, and even other measuring devices is not recommended.

Choosing Electrodes

Review the data sheet for the electrode you have selected for your application to ensure that it complies with the device specifications of the 1130. The important specification is the output voltage of the electrode. Many electrodes will work but it is important to verify compliance before connecting an electrode to the 1130. In fact, any type of sensor that uses a BNC connector and complies with the voltage range of the 1130 should work. We have reviewed the following electrodes, and found that they can be used with the 1130. This is by no means a comprehensive list, but can be used as a comparison with other electrodes if necessary.

Manufacturer Part Number
Omega PHE13XX, PHE14XX, ORE1311, ORE1411
Cole-Parmer EW-59001, EW27003
Mettler-Toledo InLab (BNC) Series


Phidget Cable

Analoginput.jpg

The Phidget Cable is a 3-pin, 0.100 inch pitch locking connector. Pictured here is a plug with the connections labelled. The connectors are commonly available - refer to the Analog Input Primer for manufacturer part numbers.

Further Reading

For more information on pH and ORP probes, check the PH/ORP Sensor Guide.

What to do Next

  • Programming Languages - Find your preferred programming language here and learn how to write your own code with Phidgets!
  • Phidget Programming Basics - Once you have set up Phidgets to work with your programming environment, we recommend you read our page on to learn the fundamentals of programming with Phidgets.


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