PICO TA300 User Manual

TA300
AC/DC
CURRENT PROBE
User’s Guide
SAFETY
Attention! Refer to this manual.
Application around and removal from
UNINSULATED HAZARDOUS LIVE conductors is
permitted.
Double/r einforced Insulation.
Complies with the relevant European standards.
Do not dispose of this product as unsorted municipal waste. Contact a qualified recycler for dispos al.
To avoid electric shock:
• Us e caution during installation and use of this product; high voltages and currents may be present in the circuit under test.
• This product must be used only by qualified personnel practicing applicable safety precautions.
• Do not use the pr oduct if damaged.
• Always connect the probe to the scope device before installing it around the conductor.
• Do not hold the probe anywhere beyond the tactile barrier: see Fig. 1.
SPECIFICATION
Electrical data
(All accuracies are stated at 23 °C ± 1 °C)
Nominal current ....................... 40 A AC peak or DC
Measuring range (s) .................. 40 A
Overload capacity ..................... 500 A (60 s)
Output sensitivity ...................... 100 mV/A
Accuracy
1
................................. ± 1% of reading ± 2 mA
Resolution ................................ ± 1 mA
Gain variation ........................... ± 0.02% of reading/°C
Frequency range
1
..................... DC to 100 kHz (0.5 dB)
Power supply ............................ 5 V Nomina l via
............................................... PicoScope 4444
Load impedance (minimum) ....... > 100 k and 100 pF
General data
Conductor size .......................... 25 mm diameter
Output cable and connectors ...... 2 m long screened cable
............................................... terminated with D9 plug
Operating temperature .............. 0 °C to +50 °C
Storage temperature ................. -20 °C to +85 °C
1
Accuracy quoted is for conductor in center of aperture
-20
-15
-10
-5
0
-3
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
10 100 1000 10000 100000
Phase shift in degrees
Gain in dB (wrt 100 Hz)
Frequency (Hz)
Typical frequency plot
Gain Phase
Fig. 1.
1. Jaws
2. Tactile barrier
3. Jaw trigger
OPERATING INSTRUCTIONS
Connecting the probe to the PicoScope 4444
Connect the TA300 to the required channel of the PicoScope 4444 via the D9 connector. The oscilloscope will identify, power and activate the probe automatically
.
Zeroing the probe
The output zero offset of the probe may change due to thermal shifts and other environmental conditions. Offset is controlled via the PicoScope 6 software: open the Channel Options menu and adjust the DC Offset con t rols. When zeroing the probe, close its jaws and keep it away from the current-carrying conductor.
Current Measurement
1. Connect the output lead to the oscilloscope.
2. Zero the probe.
3. Clamp the jaws of the probe round the conductor, ensuring a good contact between the closing faces of the jaws.
4. Observe and take measurements as required . Positive output indicates that the current flow is in the direction shown by the arrow on the probe.
SAFETY STANDARDS
EN 61010-1 EN 61010-2-032 300 V CAT III, Pollution Degree 2
EMC Standards
EN 61326-2-2 ROHS and WEEE compliant This product is designed to be safe under the following
conditions:
- indoor use
- altitude up to 2000 m
- temperature 0 °C to +50 °C
- maximum relative humidity 80% for temperatures up to
31 °C decreasing linearly to 40% relative humidity at 50 °C.
Use of the probe on uninsulated cond uc tor s is limited to 300 V AC RMS
or DC, and frequencies below 1 kHz.
Safety in its use is the responsibility of the operator, who mu st be a suitably qualified or authorized person. Ensure that your fingers are behind the tactile barrier (see Fig. 1) when using the probe. Always inspect the probe and lead for damage before use.
To avoid electric shock, k eep the probe clean and free of surface contamination.
Use a cloth moistened with isopropyl alcohol to clean t he probe. Make sure that the probe is completely dry before using it.
WARRANTY
Your current probe is guaranteed for one year from the date of purchase against defective material or workmanship. If the probe fails during the warranty period, we shall, at our discret ion, rep air or rep lac e it wit h a ne w or re con dit ione d un it provided we are satisfied that the failure is due to defective material or workmanship. To make a claim under warranty, return the probe to us, postage prepaid, with a description of the defect.
Goods alleged by the buyer to be defective shall not form the subject of any claim for injury, loss, dama ge, or any expense howsoever incurred, whether arising directly or indirectly from such alleged defects other than death or personal injury resulting from the seller‘s negligence.
No condition is made or to be implied, nor is any warranty given or to be implied as to the l ife or wea r of good s supp lied or that they will be suitable for any particular purpose or for use under specific conditions, notwithstanding that such purpose or conditions may be made known to the seller.
Pico Technology Limited
James House Colmworth Business Park St Neots Cambridgeshire PE19 8YP United Kingdom
Tel: +44 (0) 1480 396395 Fax: +44 (0) 1480 396296 Technical Support: support@picotech.com
TA300 User Guide Rev 1.4
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