TA009 60 AC-DC Amp Current Clamp
The
TA009 is a 10mA to 60A current clamp, ideal for use with the
ADC-212 for measuring the current drawn by smaller devices,
such as fuel injectors & fuel pumps.
The TA009 current clamp from SWANGATE is supplied with shrouded 4mm (banana) plug type connectors plus a SI078 Banana Plug to BNC Male so can that it can be plugged directly into the ADC-212.
The current clamp has two calibration settings, set by a slider switch on the handle of the probe.
Once connected to the ADC-212 switch the current clamp on (green LED should light) and then clamp the jaws around the current carrying conductor (as pictured below).
Using PicoScope it is easy to scale the output from the
clamp from mV to Amps. First select Settings | Custom Ranges
from the drop down menu and click on the ADD button.
Next
fill in the scaling information. The custom settings here
(to the right) scales the mV output from the current clamp
in the 1mV/100mA setting. The output from PicoScope will be
between the range of 0 and 60 amps.
The custom range below, scales the mV output from the
current clamp in the 1mV/10mA setting. PicoScope will show
the output from the current clamp within the range of 0 to
20 amps
.
When you have filled in the scaling information press the OK
button (twice) to return to the main menu. Now select File |
Save Settings to save your custom range.
Custom range will appears in the drop down list of voltage range immediate after the A or B Channel indicators on PicoScope.
CA077 600AC-DC VA Current Clamp
The
current clamp is supplied with 4mm (banana) plug type
connectors and an SI078 Interface connector so that it plugs
directly into the ADC-212.
Once connected to the ADC-212 switch the current clamp on (green LED should light) and then clamp the jaws around the current carrying conductor (as pictured).
The current clamp is calibrated to provide 1mV of output for every 1 amp of measured current. A quick check that the clamp is working can be done by measuring the current drawn when a cars headlights are switched on. To do this start PicoScope and select 100mV range (DC coupled) on either the scope or the meter. Connect the clamp around the ground connection to the car battery. With nothing on the car switched on the reading on PicoScope should be near 0mV. Now swich the headlamps on, the reading should jump up a few mV (1mV per amp of current drawn). If the reading in fact jumps down, dont worry - current clamps are directional, just reverse the clamp on the conductor.
Using PicoScope it is easy to scale the output from the clamp from mV to Amps. First select Settings | Custom Ranges from the drop down menu and click on the ADD button.
Next fill in the scaling information as shown on the right. This simply scales from mV to Amps and provides a 0 to 600A range (the maximum the clamp can measure). Other ranges can be added in a similar way, for example for a 0 to 100A range change each occurrence of the number 600 to 100. More information on scaling can be found in PicoScopes online manual.
When you have filled in the scaling information press the OK button (twice) to return to the main menu. Now select File | Save Settings to save your custom range. This custom range now appears in the drop down list of voltage ranges
Using PicoScope it is easy to scale the output from the clamp from mV to Amps. First select Settings | Custom Ranges from the drop down menu and click on the ADD button.
Next fill in the scaling information as shown on the right. This simply scales from mV to Amps and provides a 0 to 600A range (the maximum the clamp can measure). Other ranges can be added in a similar way, for example for a 0 to 100A range change each occurrence of the number 600 to 100. More information on scaling can be found in PicoScopes online manual.
When you have filled in the scaling information press the OK button (twice) to return to the main menu. Now select File | Save Settings to save your custom range. This custom range now appears in the drop down list of voltage ranges
Although the current clamp is designed primarily for measuring 'high' currents, the high resolution and flexible input ranges of the ADC-212 allow much lower currents to be measured than with most automotive oscilloscopes.
To make measurements at low currents, the following advice may help:
