Extech Instruments CA310 User Manual

User's Guide
Model CA310
300A AC Current Clamp-on
MultiMeter Adaptor

Introduction

Congratulations on your purchase of the Extech CA310 300 Amp AC Clamp-On MultiMeter
Adaptor. With this clamp adaptor an AC current can be safely measured by simply clamping
around a single conductor. The adaptor outputs an AC mV signal that is proportional to the
measured AC current. The DMM mV reading (times 10) is equivalent to the value of the AC
current. Careful use of this device will provide years of reliable service.

Specifications

Sensor type
Measurement Range
Adaptor Output
Frequency range
Working voltage
Maximum output impedance 45Ω
Accuracy
Temperature coefficient
Jaw size
Operating Conditions
Dimensions/Weight
NOTE: Accuracy is specified for a period of one year for ambient conditions 64
o o
(18 C to 28 C) < 80% RH.

Safety

Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must
refer to the manual for further information.
This symbol indicates that double insulation is used.
WARNING: This indicates that a potentially hazardous condition which, if not avoided,
could result in death or serious injury.

Safety Precautions

1. WARNING: Improper use of this meter can cause damage, shock, injury or death.
Read and understand this manual before operating the meter.
2. Inspect the condition of the test leads and the meter itself for any damage before
operating the meter. Repair or replace any damage before use.
3. Do not use on non-insulated conductors at voltages greater than 250VAC rms or DC.
Induction coil
0.1 to 300 Amps AC
10mV AC output to DMM per 1A AC measurement
50/60Hz
600V CAT II (IEC 1010-1)
± (3.0% + 10mV) for readings less than 50A
± (2.0% + 5mV) for readings greater than 50A
0.2 times the specified accuracy per
1.2" (30mm)
o o
32 to 122 F (0 to 50 C) < 80% RH
3.2 x 6.1 x 1.4" (80 x 156 x 35mm); 7.8 oz. (220g)
300 AMP AC CLAMP ADAPTOR
OUTPUT VOLTAGE: 1mV AC Per 1A AC
CA300
CATII 600V
o o o
C < 18 C or > 28 C
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F to 84 F