Vernier Software and Technology
Vernier Software & Technology
Tech Info Library

Energy Sensor Troubleshooting and FAQs

Vernier Energy Sensor, order code VES-BTA, $88
Specifications and User Guide

TROUBLESHOOTING
- Primary Test:
1. Connect either voltage or current lead to LabQuest 2 or to Logger Pro via an interface.
2. Vernier Energy Sensor should appear as a single sensor appropriate to the lead that was plugged in.
3. Connect the remaining lead.
On LabQuest 2, four bar gauges should appear for potential, current, resistance, and power. If this doesn’t happen, verify that you have a current version of the software.

When connected to Logger Pro, Choose New from the File menu. A file should open with four graphs, potential, current, resistance and power. If this doesn’t happen, verify that you have a current version of the software.
     TIL 3182: What software do I need to use a Vernier Energy Sensor?

- Secondary Test:
If the above steps are successful and the unit is still not behaving properly try the following:
1. Zero the Sensors on the Energy Sensor while shorting out the Source terminals. Remove the short.
2. Connect a known voltage source (e.g. a battery) in the 2-5V range to the Source terminals of the Energy Sensor.
3. Connect an appropriate resistor that would draw about 100 mA of current from the source, e.g. for a 3V source use a 30 Ohm resistor.
4. On LabQuest 2, the bar gauges should read the applied voltage and the appropriate current calculated from Ohm’s law. On Logger Pro the Auto ID file gauges should give these same readings.
5. If the step above is successful, the VES is operating correctly and the issue is somewhere in the components that are connected to the Energy Sensor. Double check your wiring, and make sure all connections are secure,

TECH TIP VIDEO

RELATED TIL ENTRIES
TIL 3228: Readings from Vernier Energy Sensor are noisy.
TIL 3243: Can I use the Vernier Energy Sensor in place of other voltage or current sensors?

Software requirements
-TIL 3182: What software do I need to use a Vernier Energy Sensor?
-The original LabQuest requires version 1.7.2 or newer.
-LabQuest 2 requires version 2.3.1 or newer.

SPECIFICATIONS
- Source input potential range ± 30 V
Source input current range ± 1000 mA
Linearity
     Potential Sensor 0.01%
     Current Sensor 0.01%
13-bit resolution (using SensorDAQ)
     Potential Sensor 0.008 V
     Current Sensor 0.26 mA
12-bit resolution (using LabPro, LabQuest 2, LabQuest, LabQuest Mini, TI-Nspire Lab Cradle)
     Potential Sensor 0.016 V
     Current Sensor 0.52 mA

Input impedance
     Potential Sensor > 2 MΩ
Insertion resistance
     Current Sensor 0.1 Ω

Frequency response
     Potential Sensor –3 dB @ 160 Hz
     Current Sensor –3 dB @ 160 Hz

RELATED VERNIER PRODUCTS
- Vernier Variable Load, order code VES-VL, $64
- Vernier Resistor Board, order code VES-RB, $18

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