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EXTECH MA445 [21/21] Copyright 2016 flir systems inc
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MA44x‐en‐GB_V1.0 8/16
21
General Specifications
Display LCD 4000‐count multi‐function backlit LCD
Polarity Automatic display of positive and negative polarity
Over‐range indication “OL” or “‐OL” is displayed
Conversion rate 3 updates per second
Clamp Sensor Type Coil induction (MA440); Hall Effect (MA443 and MA445)
Test position error Additional error of ±1.0% of reading applies when the conductor
under test is not positioned at the center of the clamp area
Jaw Opening 30mm diameter
Electromagnetic field influence
Unstable or inaccurate readings may be displayed if there is an
electromagnetic field disturbance in the measurement environment
Maximum Voltage 600V AC/DC maximum applied to any terminal
Low battery indication
is displayed
Auto Power OFF After 30 minutes (MA440) or 15 minutes (MA443 and MA445)
Hold M button while turning meter ON to disable APO (MA443 and
MA445 only)
Operating Temperature and Humidity
0~30C (32~86F); 80%RH maximum
30~40C (86~104F); 75%RH maximum
40~50C (104~122F); 45%RH maximum
Storage Temperature and Humidity
‐20~60C (‐4~140F); 80%RH maximum (with battery removed)
Operating Altitude 2000m (6562’)
Battery power 3 x 1.5V ‘AAA’ alkaline batteries
Weight 265g (9.3 oz.) Including batteries
Dimensions (W x H x D) 77 x 228 x 41mm (3.0 x 9.0 x 1.6”)
Safety Standards Indoor use only; Complies with EN61010‐1, EN61010‐2‐032, and
EN61010‐2‐033; CAT III 600V; Pollution Degree 2
Drop Protection 1m (approx. 3’)
Copyright © 2016 FLIR Systems, Inc.
All rights reserved including the right of reproduction in whole or in part in any form
www.extech.com
Содержание
- Introduction 2
- Safety 2
- Warnings 3
- Warnings identify hazardous conditions and actions that could cause bodily harm or death 3
- Cautions 4
- Safety symbols 4
- Description 5
- Display description 5
- Fig 1 meter description 5
- Meter description 5
- Control buttons 6
- Disable auto power off ma443 and ma445 7
- Operation 7
- Powering the meter 7
- Ac current measurements 8
- Fig 2 correct and incorrect aca clamping 8
- Dc current measurements ma445 9
- Fig 3 dca zero before measurement fig 4 dca measurement 9
- Ac and dc voltage measurements 10
- Fig 5 ma443 ma445 voltage test fig 6 ma440 voltage testing 10
- Fig 7 resistance and continuity measurements 11
- Resistance measurements 11
- Continuity measurements 12
- Fig 8 frequency measurements 12
- Frequency measurements 12
- Capacitance measurements 13
- Fig 9 capacitance measurements 13
- Diode test 14
- Fig 10 diode testing 14
- Fig 11 temperature measurements 15
- Temperature measurements ma443 and ma445 15
- Fig 12 non contact voltage detection 16
- Non contact voltage detector ef ncv 16
- Battery replacement 17
- Cleaning and storage 17
- Maintenance 17
- Ac current 18
- Ac voltage 18
- Dc current 18
- Dc voltage 18
- Electrical specifications 18
- Function range resolution accuracy reading ol protection 18
- Specifications 18
- Capacitance 19
- Continuity 19
- Duty cycle 19
- Frequency hz 19
- Resistance 19
- Non contact voltage detector ncv 20
- Temperature 20
- Copyright 2016 flir systems inc 21
- General specifications 21
- Www extech com 21
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