MA150 [EXTECH]
200A AC Mini Clamp-on Meter; 200A交流微型钳型表
| 型号： | MA150 |
| 厂家： | 
EXTECH INSTRUMENTS CORPORATION. |
| 描述： | 200A AC Mini Clamp-on Meter |
| 文件： | 总7页 (文件大小：200K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
User’s Guide
Model MA150
200A AC Mini Clamp-on Meter
• 2000 count LCD display
• White LED backlight
• Built-in non-contact AC voltage detector plus flashlight
• Max Hold
• Autoranging with auto power off
• 0.7” (18mm) Jaw opening
Introduction
Congratulations on your purchase of Extech’s MA150 AC Mini Clamp Meter. This meter is
shipped fully tested and calibrated and, with proper use, will provide years of reliable
service.
Meter Description
1. Current sense jaw
6. LCD display
7. Clamp trigger
8. MODE key
2. Non-contact AC voltage indicator light
3. Flashlight button
4. Rotary function switch
9. COM input jack
10. V Ω input jack
5. MAX hold and Backlight key
9
10
Safety Information
Caution! Refer to the explanation in this Manual
Double Insulation
!
This meter has been designed to be safe in use, but the operator must use caution in its
operation. The rules listed below should be carefully followed for safe operation.
1. NEVER apply voltage or current to the meter that exceeds the specified maximum:
2. USE EXTREME CAUTION when working with voltages greater than 60VDC or 25VAC
rms. These voltages are considerd a shock hazard.
3. NEVER operate the meter unless the back cover and the battery/fuse door are in place
and fastened securely.
Input Limits
Function
AC Current
Maximum Input
200A
AC/DC Voltage
Resistance, Diode, Continuity Test
600V AC/DC
600V AC/DC
MA150 Ver. 2.0 08/07
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Operation
AC Current Measurements
1) Set the Function switch to the 200A AC range.
Yes
No
2) Press the jaw trigger and clamp around, fully enclosing a single
conductor. Do not allow a gap between the two halves of the jaw.
Refer to the diagram at right for the correct way to enclose a single
conductor.
3) Read the ACA value on the LCD.
AC/DC Voltage Measurements
1) Insert the black test lead into the negative COM terminal and the red test lead into the
positive V terminal.
2) Set the function switch to the V position.
3) Select AC or DC with the MODE button.
4) Connect the test leads in parallel to the circuit under test.
5) Read the voltage measurement on the LCD display.
Resistance and Continuity Measurements
1) Insert the black test lead into the negative COM terminal and the red test lead into the
positive V Ω terminal.
2) Set the function switch to the Ω
position.
3) Use the MODE button to select resistance. The MΩ icon will appear in the display.
4) Touch the test leads across the circuit or component under test. It is best to disconnect
one side of the device under test so the rest of the circuit will not interfere with the
resistance reading.
5) For Resistance tests, read the resistance on the LCD display
6) For Continuity, use the MODE button to select continuity “•)))”. The display icons will
change when the MODE button is pressed.
7) If the resistance is <120 Ω ꢀa tone will sound.
Diode Test
1) Insert the black test lead banana plug into the negative COM jack and the red test lead
banana plug into the positive V Ω jack.
2) Set the function switch to the Ω
position.
on the display.
3) Press the MODE button to indicate
4) Touch the test probes to the diode under test. Forward voltage will typically indicate
0.400 to 0.700V. Reverse voltage will indicate “OL”. Shorted devices will indicate near
0V and an open device will indicate “OL” in both polarities.
MA150 Ver. 2.0 08/07
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Non-Contact AC Voltage Detection
WARNING: Risk of Electrocution. Before use, always test the Voltage Detector on a
known live circuit to verify proper operation
1) AC Voltage detection operates on any of the three Function switch positions.
2) Touch the probe tip to the hot conductor or insert into the hot side of the electrical
outlet.
3) If AC voltage is present, the detector light will illuminate.
NOTE: The conductors in electrical cord sets are often twisted. For best results, slowly
slide the probe tip along a length of the cord to assure placing the tip in close
proximity to the live conductor.
NOTE: The detector is designed with high sensitivity. Static electricity or other sources of
energy may randomly turn the detector light on. This is normal operation
MAX Hold
To hold the highest reading on the LCD, momentarily press the “MAX ” key. The meter
reading will not change as readings change, rather it will only display the highest reading
encountered since the MAX hold button was pressed. Press the MAX hold button again to
return the meter to normal operation.
Backlight
Press and hold the “MAX ” key for more than one second to turn the backlight on. This will
also activate the MAX Hold function. To release the MAX Hold function and return the meter
to normal operation, press the “MAX ” key momentarily. The backlight will automatically turn
off after 15 seconds. To manually turn off the backlight, press and hold the “MAX ” key for
more than 1 second.
Flashlight
Press and hold the top button to turn the flashlight on. Release the button to turn the
flashlight off.
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Specifications
General Specifications
Display
2000 count Digit LCD with white LED backlight
Minus sign (-) indicates negative polarity
0.7” (18mm)
Polarity
Jaw opening
Current sensor
AC Current Bandwidth
AC Voltage Bandwidth
Overload indication
Display rate
Hall effect sensor type
50/60Hz
50/400Hz
“OL” displayed on the LCD
2 readings/second, nominal
Two 1.5V AAA batteries
“BATT” displayed on the LCD
approx. 15 minutes
Battery
Low Battery indication
Auto Power off
Operating conditions
32 to 86ºF (0 to 30ºC) 90%RH; 86 to 104ºF (30 to 40ºC) 75%RH;
104 to 122ºF (40 to 50ºC) 45%RH
Storage conditions
Altitude
- 14 to 140ºF (-30 to 60ºC); < 90% Relative Humidity
Operate at less than 3000 meters
Weight
6.2 oz. (176g) including battery
Dimensions
Standards
6.5 x 2.6 x 1.3” (164 x 65 x 32mm) (HWD)
For indoor use and in accordance with the requirements for
double insulation to IEC1010-1 (1995): EN61010-1 (1995)
Overvoltage Category III 300V and Category II 600V, Pollution
Degree 2.
C
C
MA150 Ver. 2.0 08/07
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Range Specifications
Function
Range
200.0A
200.0mV
2.000V
20.00V
200.0V
600V
Resolution
0.1A
0.1mV
1mV
10mV
0.1V
1V
Accuracy (of reading)
± (2.5% rdg + 10 digits)
±(0.5% rdg + 5 digits)
AC Current
DC Voltage
±(1.2% rdg + 3 digits)
±(1.5% rdg + 3 digits)
±(1.5% rdg + 3 digits)
AC Voltage
Resistance
2.000V
20.00V
200.0V
600V
1mV
10mV
0.1V
1V
±(2.0% rdg + 4 digits)
±(1.0% rdg + 4 digits)
200.0Ω
2.000kΩ
20.00kΩ
200.0kΩ
2.000MΩ
20.00MΩ
0.1Ω
1Ω
±(1.5% rdg + 2 digits)
10Ω
100Ω
1kΩ
±(2.0% rdg + 3 digits)
±(3.0% rdg + 5 digits)
10kΩ
Non-Contact AC Voltage 100VAC to 600VAC 50/60Hz
Test current: 0.3mA typical;
Diode Test
Open circuit voltage: 1.5VDC typical
Continuity
Threshold <120Ω
ꢁ
Test current <1mA
MA150 Ver. 2.0 08/07
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Maintenance
Battery Replacement
1) When the low battery symbol appears on the LCD the batteries must be replaced.
2) Power down and remove the rear battery compartment Phillips screw.
3) Lift off the battery compartment cover and replace the two 1.5V AAA cells.
4) Replace compartment cover and secure the screw.
Cleaning
Caution: Use only a dry cloth to clean the plastic case.
Calibration and Repair Services
Extech offers repair and calibration services for the products we sell. Extech also
provides NIST certification for most products. Call the Customer Service Department for
information on calibration services available for this product. Extech recommends that
annual calibrations be performed to verify meter performance and accuracy.
Warranty
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.
ꢂꢃ
Support line (781) 890-7440
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 Guide, Software updates, and other
Up-to-the-minute product information, visit our website: www.extech.com
Extech Instruments Corporation, 285 Bear Hill Road, Waltham, MA 02451
Copyright © 2007 Extech Instruments Corporation.
All rights reserved including the right of reproduction in whole or in part in any form.
MA150 Ver. 2.0 08/07
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