TA189
AC / DC
CURRENT PROBE
User’s Guide
SAFETY
The following symbols appear on the product:
Attention! Refer to manual.
Application around and removal from
UNINSULATED HAZARDOUS LIVE conductors is
permitted.
Double/reinforced insulation.
Complies with the relevant European standards.
Do not dispose of this product as unsorted
municipal waste. Contact a qualified recycler for
disposal.
To avoid electric shock:
• Use caution during installation and use of this product.
High voltages and currents may be present in circuit under
test.
• This product must be used only by qualified personnel
practising applicable safety precautions.
• Do not use product if damaged.
• Always connect probe to display device before it is installed
around the conductor.
• Always ensure that the probe is removed from any live
electrical circuit, and that leads are disconnected before
removing the battery cover.
• Do not hold the probe anywhere beyond the tactile barrier
see Fig. 1.
SPECIFICATION
Electrical data
(All accuracies stated at 23°C ± 1°C)
Nominal current .............. 30 A AC peak
or DC
Measuring range (s) .......... 30 A
Overload capacity ............. 500 A (60 s)
Output sensitivity ............. 100 mV/A
Accuracy ......................... ± 1% of reading ± 2 mA
Resolution ....................... ± 1 mA
Gain variation .................. ±0.01% of reading/°C
Frequency range
1)
........... DC to 100 kHz (0.5 dB)
Power supply ......................... 9 V Alkaline battery
........................................... PP3, MN 1604
........................................... or IEC6LR61
Load impedance (minimum) .... > 100 k
Ω
and
≤
100 pF
General data
Conductor size ..................
25 mm diameter
Output cable and connectors .... 2 m long coax terminated
........................................... with safety BNC connector
Operating temperature ......
0 °C to +50 °C
Storage temperature with
battery removed ...............
-20 °C to +85 °C
1)
Accuracy quoted is for conductor in centre 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
P
h
a
se
s
h
if
t
in
d
eg
re
e
s
G
a
in
in
dB
(w
rt
1
0
0
Hz
)
Frequency (Hz)
Typical frequency plot
Gain
Phase
1
2
3
4
7
9
5
4
6
8
Fig. 1.
1. Jaws
2. Conventional current direction
3. Tactile barrier
4. Battery cover
5. Battery cover screw
6. Jaw trigger
7. On/off switch
8. Auto zero button
9. LED
