Vernier EA-BTA User manual
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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
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
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
Electrode Amplifier
(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
See www.vernier.com/manuals/ea-bta for a list of software compatible with the
Electrode Amplifier.
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 Pro™) 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
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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.
Vernier Science Education
13979 SW Millikan Way • Beaverton, OR 97005-2886
Toll Free (888) 837-6437 • (503) 277-2299 • Fax (503) 277-2440
Rev. 2/12/2024
Vernier Graphical Analysis, Vernier LabQuest, Vernier LabQuest Mini, Logger Pro, and other marks shown are our
trademarks or registered trademarks in the United States.
iPad is a trademark of Apple Inc., registered in the U.S. and other countries.
All other marks not owned by us that appear herein are the property of their respective owners, who may or may not
be affiliated with, connected to, or sponsored by us.
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