Vernier EA-BTA Quick Start Manual

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
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
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
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
for a list of software compatible with the
) if not already running, and choose New

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

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
Ammonium Ion-Selective Electrode BNC
®
Calcium Ion-Selective Electrode BNC
or
Chloride Ion-Selective Electrode BNC
Flat pH Electrode BNC
Glass-Body pH Electrode BNC
Nitrate Ion-Selective Electrode BNC
ORP Electrode BNC
pH Electrode BNC
Potassium Ion-Selective Electrode 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

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
1
www.vernier.com/til/1430
Order Code
NH4-BNC
CA-BNC
CL-BNC
FPH-BNC
GPH-BNC
NO3-BNC
ORP-BNC
PH-BNC
K-BNC
www.vernier.com/warranty