PICO TA167 - AC/DC Current Probe User Manual

Also See for TA167:

User manual (2 pages)

Table of Contents

Contents

1 SAFETY
2 SPECIFICATION
- 2.1 Electrical data
- 2.2 General data
3 Parts and Features
4 OPERATING INSTRUCTIONS
5 Documents / Resources
- 5.1 References
- 5.2 Download manual

PICO TA167 - AC/DC Current Probe User Manual

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 the circuit under test.
This product must be used only by qualified personnel practicing applicable safety precautions.
Do not use the product 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 stated at 23°C ± 1°C)

Nominal current: 200 / 2000 A AC peak or DC
Measuring range (s): 200 / 2000 A
Overload capacity: 2200 A (60 s)
Output sensitivity: 10 / 1 mV/A
Accuracy¹⁾ (0 – 200/1500 A) ± 1% of rdg ± 100 / ± 500mA
Accuracy¹⁾ (1500 – 2000 A) ± 5% of reading
Resolution: ± 100 / ± 500 mA
Gain variation: ± 0.15% of reading/°C

Frequency range:

DC to 20 kHz (-1 dB)
I_RMS x f ≤ 400,000

Power supply:

9 V Alkaline battery
PP3, MN 1604
or IEC6LR61

Load impedance (minimum): > 100 k and 100 pF

General data

Conductor size: 32 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

Parts and Features

Parts and Features
Fig 1

Jaws
Conventional current direction
Tactile Barrier
Battery cover
Battery cover screw
Jaw trigger
ON/OFF and Range switch
Auto zero button
LED

OPERATING INSTRUCTIONS

Switch On

When the probe is switched on to the required measuring range, the green LED will illuminate. The LED starts flashing when the battery voltage is too low for normal operation and warns the user that it requires changing. This procedure is described below.

Auto Zero

The output zero offset voltage of the probe may change due to thermal shifts and other environmental conditions. Select the required measuring range and to null the output voltage depress the Auto Zero button. Ensure that the probe is away from the current carrying conductor whilst the probe is being nulled.

Current Measurement

Switch on the probe by selecting the required measuring range and check that the green LED is lit.
Connect the output lead to the oscilloscope,
Zero the probe using the Auto Zero button.
Clamp the jaws of the probe round the conductor ensuring a good contact between the closing faces of the jaws.
Observe and take measurements as required. Positive output indicates that the current flow is in the direction shown by the arrow on the probe.

Auto Power OFF

In order to save battery life, the probe will automatically switch itself off after approximately 10 minutes. To disable the Auto power off function, Switch Off the probe and Switch On whilst pressing the auto zero button. The red LED will illuminate and the probe will stay ON until switched off again.

Battery Replacement

The green or red LED will flash when the minimum operating voltage is approached. Refer to Fig 1. Use the following procedure:

SAFETY WARNING

Before removing the battery cover, ensure that the probe is disconnected from the oscilloscope and remote from any live electrical circuit.

Unclamp the probe from the conductor, turn it off using the On - Off switch and disconnect the output leads, from external equipment.
Loosen the captive screw which secures the battery cover. Lift the cover through 30° and pull it clear of the probe body as shown in Fig 1. Replace the battery and re-fit the battery cover and fasten the screw.
Fit only Type 9 V PP3 Alkaline (MN 1604).

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