Table of Contents
Advertisement
•
Continuous input of current exceeding the rated maximum or repeated activation of the safety
function may result in damage to the probe.
•
The probe is rated for maximum continuous input. Use the probe at RMS current input levels that
are within the rated continuous maximums.The maximum peak input is for a single pulse width of
<10 μs.
•
When performing continuous measurements, it is necessary to be aware that the offset voltage
may drift, depending on factors such as the ambient temperature and probe temperature.
•
Some sound may be produced by resonance depending on the measured current frequency, but
this resonance has no effect on measurements.
•
When carrying out a measurement, press the opening lever until the UNLOCK indication
disappears and check that the sensor head is properly closed. If the sensor head is not properly
closed an inaccurate measurement will be made.
•
Accurate measurements may be impossible in locations subject to strong external magnetic fields,
such as transformers and high-current conductors, or in locations subject to strong external electric
or magnetic fields, such as radio transmission equipment.
Operating Method
•
Please make sure the current measured doesn't surpass the maximum rated current of the probe.
If the maximum current exceeds the maximum rated current of the probe the magnetic core will
saturate leading to inaccurate measurements. The T3CP probe will need degaussing and zero set
again.
•
When power is first connected an offset might be present. The T3CP probe normally requires a 30
minute warm up time to stabilize the offset. If an offset is present allow the probe 30 minutes to
warm up then degauss and set zero.
•
If the T3CP probe surrounding temperature changes then check the zero setting of the probe and
reset if necessary.
•
The position of the conductor under test in the probe measurement jaw will influence the result. For
highest accuracy results try to keep the conductor under test into the center of the measurement
jaw.
•
To make a measurement push the lock / unlock switch all the way until the unlock marker
disappears. Please make sure the switch is locked and the measurement jaw is closed. If the
measurement jaw isn't closed, the measurements will be inaccurate.
•
If measuring the high voltage side of a circuit containing high frequency noise components, the
measurement result might be influenced by the high frequency noise components. Consider using
the oscilloscopes' bandwidth limit to reduce the high frequency noise, or consider measuring the
low voltage side of the circuit.
•
The continuous maximum input current range will change according to the frequency of the current
under test. The probe will be damaged when operating beyond its specified range at any particular
frequency. Please consult the T3CP probe derating curves in the specifications to see the
maximum current at any particular frequency.
Page 9
Advertisement
Table of Contents
