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Electrode Amplifier User Manual

Order Code: EA-BTA

Use our Electrode Amplifier to collect data with almost any electrode that has a BNC connector. This includes electrodes from Vernier such as one of our pH, ISE, or ORP electrodes, or third-party electrodes, such as pH, ISE (ion-selective electrode), or ORP (oxidation-reduction potential). The Electrode Amplifier can produce an output in mV, pH (when using a pH electrode). You can also perform your own 2-point linear calibration.

Note: Vernier products are designed for educational use. Our products are not designed nor are they recommended for any industrial, medical, or commercial process such as life support, patient diagnosis, control of a manufacturing process, or industrial testing of any kind.

Compatible Software

Choose a platform below to see its compatibility requirements.

LabQuest
InterfaceLabQuest App
LabQuest 3Full support 1
LabQuest 2 (discontinued)Full support 1
LabQuest (discontinued)Full support 1

Compatibility Notes

  1. Requires a BNC electrode
Computers
Software
InterfaceGraphical AnalysisLogger ProLogger Lite
LabQuest MiniFull support 1Full support 1Full support 1
LabQuest 3Full support 1Full support 1Incompatible 1
LabQuest 2 (discontinued)Full support 1Full support 1Full support 1
LabQuest Stream (discontinued)Full support 1 2Full support 1Full support 1 2
Go!LinkFull support 1Full support 1Full support 1
LabQuest (discontinued)Full support 1Full support 1Full support 1
LabPro (discontinued)IncompatibleFull support 1Full support 1

Compatibility Notes

  1. Requires a BNC electrode
  2. Connect LabQuest Stream via USB. Wireless connection is not supported.
Chromebook
Software
InterfaceGraphical Analysis
LabQuest MiniFull support 1
LabQuest 3Full support 1
LabQuest 2 (discontinued)Full support 1
LabQuest Stream (discontinued)Full support 1 2
Go!LinkFull support 1
LabQuest (discontinued)Full support 1

Compatibility Notes

  1. Requires a BNC electrode
  2. Connect LabQuest Stream via USB. Wireless connection is not supported.
iOS
Software
InterfaceGraphical AnalysisGraphical Analysis GW
LabQuest Stream (discontinued)Full support 1Partial support 1 2
LabQuest 3Full support 1 3Full support 1 3
LabQuest 2 (discontinued)Full support 1 3Full support 1 3

Compatibility Notes

  1. Requires a BNC electrode
  2. Data collection will be in mV only. The pH calibration is not supported.
  3. iOS and Androidâ„¢ devices can only connect to LabQuest 2 or LabQuest 3 via Wireless Data Sharing.
Android
Software
InterfaceGraphical AnalysisGraphical Analysis GW
LabQuest Stream (discontinued)Full support 1Incompatible 1
LabQuest 3Full support 1 2Full support 1 2
LabQuest 2 (discontinued)Full support 1 2Full support 1 2

Compatibility Notes

  1. Requires a BNC electrode
  2. iOS and Androidâ„¢ devices can only connect to LabQuest 2 or LabQuest 3 via Wireless Data Sharing.
Arduino
Software
InterfaceArduino
Vernier Arduino® Interface ShieldFull support
LabVIEW
Software
InterfaceNI LabVIEW
SensorDAQ (discontinued)Full support
Vernier myDAQ AdapterFull support 1
Go!LinkFull support
LabQuest MiniFull support
LabQuest Stream (discontinued)Full support
LabQuest 3Full support
LabQuest 2 (discontinued)Full support
LabQuest (discontinued)Full support

Compatibility Notes

  1. You can only read the raw count/raw voltage output by this sensor. You must do the programming to convert to proper sensor units.
Texas Instruments
Software
InterfaceEasyDataDataMateTI-84 SmartViewDataQuestTI-Nspire Software
EasyLinkFull support 1 2IncompatibleFull support 1 3Full support 1Full support 1 3
CBL 2 (discontinued)Full support 1 4Full support 1 4 5IncompatibleIncompatibleIncompatible
LabPro (discontinued)Full support 1 4Full support 1 4 5IncompatibleIncompatibleIncompatible
TI-Nspire Lab Cradle (discontinued)IncompatibleIncompatibleIncompatibleFull support 1Full support 1

Compatibility Notes

  1. Requires a BNC electrode
  2. Use with TI-84 Plus calculators only.
  3. Requires an Easy to Go! adapter
  4. CBL 2 and LabPro interfaces cannot be used with TI-84 Plus CE calculators.
  5. DataMate cannot be used with color screen TI-84 Plus calculators; use EasyData with these calculators.

Getting Started

  1. Connect the sensor to the interface (LabQuest Mini, LabQuest 3, etc.).
  2. Start the appropriate data-collection software (Vernier Graphical Analysis®, LabQuest® App, or Logger Proâ„¢) if not already running, and choose New from File menu. The software will identify the sensor and load a default data‑collection setup. You are now ready to collect data.

If you are collecting data using a Chromebook™, mobile device such as iPad® or Android™ tablet, or a Vernier wireless interface, please see the following link for up-to-date connection information:

www.vernier.com/start/ea-bta

Specifications

Power

7 mA @ 5VDC

Input range

–450 mV to +1100 mV

Impedance

100 M Ohm

Gain

2.2 V/V

Offset

1.20 V (nominal)

Stored calibration (mV)
  • slope: 466.875
  • intercept: –559.793

Stored calibration (pH)
  • slope: –7.752
  • intercept: 16.237

Care and Maintenance

Do not wrap the cable tightly around the sensor for storage. Repeatedly doing so can irreparably damage the wires and is not covered under warranty.

How the Sensor Works

The Electrode Amplifier is a circuit that allows the millivolt output of an electrode to be monitored by an interface. The electrode is connected to the BNC connector on one end of the amplifier. The cable from the Electrode Amplifier connects to the interface.

The Electrode Amplifier will report values in units of pH. If an ORP or ISE electrode is attached, however, you can choose to read in units of mV. Custom linear 2-point calibrations can also be performed if desired.

Troubleshooting

For troubleshooting and FAQs, see www.vernier.com/til/1430

Repair Information

If you have watched the related product video(s), followed the troubleshooting steps, and are still having trouble with your Electrode Amplifier, contact Vernier Technical Support at support@vernier.com or call 888-837-6437. Support specialists will work with you to determine if the unit needs to be sent in for repair. At that time, a Return Merchandise Authorization (RMA) number will be issued and instructions will be communicated on how to return the unit for repair.

Accessories/Replacements

Item Order Code

Ammonium Ion-Selective Electrode BNC

NH4-BNC

Calcium Ion-Selective Electrode BNC

CA-BNC

Chloride Ion-Selective Electrode BNC

CL-BNC

Flat pH Electrode BNC

FPH-BNC

Glass-Body pH Electrode BNC

GPH-BNC

Nitrate Ion-Selective Electrode BNC

NO3-BNC

ORP Electrode BNC

ORP-BNC

pH Electrode BNC

PH-BNC

Potassium Ion-Selective Electrode BNC

K-BNC

Warranty

Warranty information for this product can be found on the Support tab at www.vernier.com/ea-bta/#support

General warranty information can be found at www.vernier.com/warranty

Disposal

When disposing of this electronic product, do not treat it as household waste. Its disposal is subject to regulations that vary by country and region. This item should be given to an applicable collection point for the recycling of electrical and electronic equipment. By ensuring that this product is disposed of correctly, you help prevent potential negative consequences on human health or on the environment. The recycling of materials will help to conserve natural resources. For more detailed information about recycling this product, contact your local city office or your disposal service.

The symbol, shown here, indicates that this product must not be disposed of in a standard waste container.

Contact Support

Fill out our online support form or call us toll-free at 1-888-837-6437.

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