Extech Instruments 380946 Manual de usuario

User’s Guide

DCA/ACA CLAMP-ON MULTIMETER ADAPTOR

Model 380946

Introduction

Congratulations on your purchase of Extech's 30 Amp AC/DC Clamp-On MultiMeter

Adaptor. There is no need to break circuits when measuring current with a clamp device,

simply open the meter jaw and clamp around the conductor under test. Current is displayed

on the external DMM that is connected to the Adaptor.

380946 4/01 Rev. 1.0

Specifications

DC Ranges Output Accuracy

400mA DC 1mV/mA DC Not specified 1

4A DC 100mV/A ±(2.0%+3mA)

30A DC 10mV/A ±(2.0%+30mA)

AC Ranges 50/60Hz 40 to 100Hz

400mA AC 1mV/mA AC ±(2.0%+0.5mA) ±(2.5%+0.5mA)

50/60Hz 40 to 400Hz

4A AC (0 to 400mA) 100mV/A AC ±(2.5%+8mA) ±(3.0%+8mA)

4A AC (400 to 4A) 100mV/A AC ±(2.5%+3mA) ±(3.0%+6mA)

30A AC 10mV/A AC ±(2.0%+30mA) ±(2.5%+30mA)

Notes: Accuracy stated at 23oC ±5oC

1The 400mA range is specified for AC measurements only. For DC measurements on this

range the typical accuracy is ±(2.5%+1mA) and the last digit may drift ± 4 counts.

Range DMM display

400mA 0.1mV / 0.1mA (400mA = 40.0mV)

4A 0.1mV / 1mA (4A = 400mV)

30A 0.1mV / 10mA (30A = 300mV)

Jaw size 0.9” (23mm) max

Power 2 1.5V AA batteries

Low Battery indication Red LED

Power consumption 10mA (approximately)

Operating Temperature: 14°to 122°F (-10 to 50oC), <85% R.H.

Storage Temperature: -4°to 140°F (-20 to 60oC), <75% R.H.

Relative Humidity: 80% to 88°F (31oC), decreasing linearly to 50% at 104°F (40oC)

Altitude: Operating below 2000 meters

Dimensions: 7.2 x 2.5 x 1.4” (183 x 61.3 x 35.6mm)

Weight: 6.7oz (190g)

Safety

Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user must

refer to the manual for further information.

This symbol, adjacent to a terminal, indicates that, under normal use,

hazardous voltages may be present

WARNING: This indicates that a potentially hazardous condition which, if not avoided,

could result in death or serious injury.

CAUTION: This indicates that a potentially hazardous condition which, if not avoided,

could result in injury or damage to the meter.

Safety Precautions

1. WARNING: Improper use of this meter can cause damage, shock, injury or death.

Read and understand this user's manual before operating the meter.

2. Make sure any covers or battery doors are properly closed and secured.

3. Use great care when making measurements if the voltages are greater than

25VAC rms or 35VDC. These voltages are considered a shock hazard.

4. Remove the battery if the adaptor is to be stored for long periods.

380946 4/01 Rev. 1.0

Panel Description

1 Transformer jaw

2 Jaw trigger

3 On/Off and range selection switch

4 Zero button

5 Power-On LED

6 Low battery LED

7 Output terminals

Current Measurements

1. Set the DMM to the mV or low voltage range (ACV for AC measurements or DCV

for DC measurements).

2. Determine the highest anticipated reading and set the range accordingly. Start

with the 30A range if unsure.

3. Connect the RED connector lead to the multimeter’s '+' Voltage

terminal and the BLACK lead to the '-' Common terminal.

4. For DC measurements, hold the adaptor in the same

orientation as it will be held during the measurement and press

the Zero button (No conductor in the jaw).

5. Press the Jaw Trigger to open the jaw and clamp around a

single conductor.

6. Read the Current on the DMM display.

1234567

Yes

380946 4/01 Rev. 1.0

Battery Replacement

When the low battery status LED indicator lights, the meter's batteries must be changed.

Open the rear battery compartment, replace the batteries, and close the compartment cover.

Warranty

EXTECH INSTRUMENTS CORPORATION warrants the basic instrument to be free of

defects in parts and workmanship for one year from date of shipment (a six month limited

warranty applies on sensors and cables). If it should become necessary to return the

instrument for service during or beyond the warranty period, contact the Customer Service

Department at (781) 890-7440 for authorization. A Return Authorization (RA) number must

be issued before any product is returned to Extech. The sender is responsible for shipping

charges, freight, insurance and proper packaging to prevent damage in transit. This warranty

does not apply to defects resulting from action of the user such as misuse, improper wiring,

operation outside of specification, improper maintenance or repair, or unauthorized

modification. Extech specifically disclaims any implied warranties or merchantability or

fitness for a specific purpose and will not be liable for any direct, indirect, incidental or

consequential damages. Extech's total liability is limited to repair or replacement of the

product. The warranty set forth above is inclusive and no other warranty, whether written or

oral, is expressed or implied.



Tech Support Hotlines

781-890-7440 ext. 200

[email protected]

www.extech.com

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