CA250 [EXTECH]
400A AC/DC Current Clamp-on MultiMeter Adaptor; 400A AC / DC电流钳式万用表适配器
| 型号： | CA250 |
| 厂家： | 
EXTECH INSTRUMENTS CORPORATION. |
| 描述： | 400A AC/DC Current Clamp-on MultiMeter Adaptor |
| 文件： | 总1页 (文件大小：99K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
User’s Guide Model CA250
400A AC/DC Current Clamp-on MultiMeter Adaptor
Introduction
Current Measurements
1. Set the DMM to the AC or DC mV range or to the lowest voltage
Congratulations on your purchase of the
Extech CA250 400 Amp AC/DC Clamp-
On MultiMeter Adaptor. With this clamp
adaptor, a current can be measured by
simply clamping around a single
conductor. The adaptor outputs an mV
signal that is proportional to the
measured current and displayed on a
DMM. Careful use of this device will provide years of reliable service.
range.
2. Connect the RED test lead to the DMM '+' Voltage terminal and
the BLACK lead to the '-' COM terminal.
3. Set the adaptor to the 40A (AC or DC) or the 400A (AC or DC)
range.
4. Press the Jaw Trigger to open the jaw and clamp around a single
conductor.
5. The unit will output an AC or DC voltage proportional to the
measured current. (40A range:10mV/A, 400A range:1mV/A)
Specifications
6. Read the voltage on the DMM display and interpret as
current.(direct mV to A on the 400A range, divide by 10 on the
40A range)
Measurement Ranges 0 to 40 Amps AC/DC
0 to 400 Amps AC/DC
Adaptor Output
10mV/Amp on the 0 to 40A range
1mV/Amp on the 0 to 400A range
1
4
1. Read mV
Frequency range
50/60Hz
2. Set to AC or DC mV
2
3. Voltage Input
EN61010-1 and IEC61010-1 2nd Edition (2001)
to Category III 600V and Category IV 300V;
Pollution Degree 2 in accordance with IEC 664
indoor use.
5
4. NCV detector
3
Safety
6
5. NCV indicator
6. DC Zero adjust
Standards
Accuracy
C
C
0 to 40A
DC Zero
± (2.5% + 0.1A)
A hysteresis voltage may appear when the clamp is set to the DC
position. With no conductor in the jaw, adjust the DC Zero adjust until
the DMM display indicates zero. If the voltage is beyond the range of
the zero adjust, snap the jaw open and shut several times to clear the
hysteresis.
0 to 400A ± (2.8% + 0.5A)
Jaw size
1.2" (30mm)
Operating Conditions
Storage Conditions
Battery
32 to 122oF oF (0 to 50oC) < 70% RH
-4 to 158oF(-20 to 70oC)<80% RH
2 – 1.5V “AAA”
Note: DC current measurements are polarity sensitive. Reverse the
conductor direction in the jaw to change the polarity.
Dimensions/Weight
5.8 x 2.3 x 1.3" (146 x 60 x 32mm);
8oz. (226g)
Note: Do not apply voltage to the clamp adaptor’s test leads
Note: Clamp a single conductor only, do not clamp the hot and neutral
simultaneously.
Safety
Safety Symbols
This symbol, adjacent to another symbol or terminal,
indicates the user must refer to the manual for further
information.
X
This symbol indicates that double insulation is used.
Note: The clamp jaws must be fully closed for proper measurements.
On large conductors or line splitters, make sure there is no gap
between the upper and lower jaw.
WARNING: This indicates that a potentially hazardous condition which,
if not avoided, could result in death or serious injury.
Safety Precautions
Non-Contact AC Voltage Measurements
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.
WARNING: Risk of Electrocution. Before use, always test the
Voltage Detector on a known live circuit to verify proper operation
1. Touch the probe tip to the hot conductor or hold next to the hot
side of the electrical outlet.
3. Do not use on non-insulated conductors at voltages greater than
600VAC rms or DC.
2. If AC voltage is present, the detector LED will illuminate.
Warranty
Support line (781) 890-7440
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts
and workmanship for one year from date of shipment (a six month limited warranty applies to
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 ext.
210 for authorization or visit our website www.extech.com for contact information. 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.
Technical Support: Extension 200; E-mail: support@extech.com
Repair & Returns: Extension 210; E-mail: repair@extech.com
Product specifications subject to change without notice
For the latest version of this User’s Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451
Copyright © 2009 Extech Instruments Corporation.(A FLIR company)
All rights reserved including the right of reproduction in whole or in part in any form.
CA250 V1.0 2/09
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