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Vernier Software & Technology
Tech Info Library

Electrode Amplifier Troubleshooting and FAQs

Electrode Amplifier, order code EA-BTA, $40
Specifications and User Guide

-Primary Test: Connect an ORP sensor or a pH sensor to the Electrode Amp and connect the Electrode Amp to a Vernier interface. Start the data-collection program. Place the ORP or pH sensor in a buffer solution of known pH and confirm that the readings are within range.
-Secondary Test: Confirm that the BNC connection is secure.

TIL 2291: Can I use my third-party ISE with my Vernier equipment?
TIL 3641: During calibration, what are the typical potential output readings for the PH-BNC electrode?

-new order code: EA-BTA
-old order code: none
-Power = 7 mA @ 5VDC
-Input range = -450mV to +1100 mV
-Impedance > 100M Ohm
-Gain: 2.2 V/V
-Offset: 1.20 V (nominal)

-Calibrate? Normally, yes. However, it depends on the sensor that is connected. The Electrode Amplifier amplifies the voltage produced by an electrode into a range where it can be monitored by the lab interface.
The Electrode Amplifier will report values in units of millivolts. If a pH electrode is attached, however, you can choose to read in units of pH. Custom, linear 2-point calibrations can also be performed if desired.
-You can open an experiment file in LoggerPro which will use the stored calibration in the software.


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