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Extech MA145 True RMS 300A AC/DC Mini Clamp Meter + NCV + NIST

Name: Extech MA145 True RMS 300A AC/DC Mini Clamp Meter + NCV + NIST
Brand: Extech
SKU: ExtechMA145-NIST
Price: 289.99 USD
Availability: InStock

0 reviews | UPC: 793950371466 | Model: Extech MA145-NIST

Extech MA145 True RMS 300A AC/DC Clamp Meter

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Clamp Meter, Mini 300A, AC/DC w/NIST MA145- PLEASE NOTE: If not in stock: NIST calibration takes between 7-14 days once stock is available.

MA145 True RMS 300A AC/DC Mini Clamp Meter + NCV + NIST
True RMS for accurate readings of noisy, distorted or non-sinusoidal waveforms
Compact 0.8" (22mm) jaw size accommodates conductors up to 300MCM and allows measurements in tight locations
Zero function for accurate DC measurements
Unique Smart Auto Sense feature
Low Pass Filter (LPF) for accurate measurement of variable frequency drive signals
Built-in Non-Contact Voltage (NCV) detector for quick detection of live voltage
Inrush current measurement
6000 count backlit LCD display
Smart Data Hold: Audiovisual alert when a new reading exceeds 50 digits of a held reading
Low battery indicator and Auto Power Off feature
Complete with carrying case and two LR44 batteries

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Extech MA145 - True RMS 300A AC/DC Mini Clamp Meter + NCV + NIST

Zero function for accurate DC measurements
Unique Smart Auto Sense feature
Low Pass Filter (LPF) for accurate measurement of variable frequency drive signals
Built-in Non-Contact Voltage (NCV) detector for quick detection of live voltage
Inrush current measurement

Choice of AC Current or AC/DC Current model with 0.8" (22mm) jaw size and high accuracy. Smart Auto Sense feature enables the MA145 to recognize the input (within a given function) and automatically switch to the correct mode of operation (i.e. AC to DC Current measurement). Built-in Non-Contact Voltage (NCV) Detector allows for quick detection of live voltage.

The MA145 measures AC/DC current to 300A and offers a Smart Data Hold feature, display Backlight, In-rush Current mode, DCA Zero, Low Pass Filtering (LPF), and a non-contact Voltage Detection feature that senses electrical sources safely.

Meter Description

Transformer current jaw
Finger-Hand Guard
Jaw opening trigger
LCD Multi-function display
Push-button controls

Note that the battery compartment is located on back of meter

Display Description

Automatic ACA/DCA detect
Zero icon
In-Rush Current mode
Low Pass Filter
Data Hold
AC Measurement
DC Measurement
Amperes (current)
Main Display area
Battery status icon
Minus (negative) sign
Non-Contact Volt Detect icons

Extech MA145 True RMS 300A AC/DC Clamp Meter Specifications

AC Current (max resolution)	60A, 300A (0.01A)
Basic accuracy	AC: ±1.5%, DC: ±1.5%
Non-Contact Voltage (NCV)	80 to 600V
Dimensions	5.8x2.4x1.2" (147x60x31mm)
Weight	4.9oz (140g)
Display	6000‐count Multi‐Function LCD
Over‐range indication	“OL” or “‐OL” is displayed
Conversion rate	2 updates per second
Maximum conductor size	22mm (0.87”) in diameter
Low battery indication	is displayed. Meter also displays available battery power at startup
Auto Power OFF	After 20 minutes (can be disabled)
Operating Temperature and Humidity	0~30°C (32~86°F); 80%RH maximum 30~40°C (86~104°F); 75%RH maximum 40~50°C (104~122°F); 45%RH maximum
Storage Temperature and Humidity	‐20°~60°C (‐4°~140°F); 80%RH maximum
Temperature Coefficient	0.2 x specified accuracy / °C, < 18°C (64.5°F), > 28°C (82.4°F)
Operating Altitude	2000m (6562ft.)
Battery power	(2) LR‐44 1.5V batteries (battery life 20 hours typical)
Safety Standards	For indoor use and in accordance with the requirements for double insulation to EN61010‐1, EN61010‐2‐030, EN61010‐2‐032, EN61326‐1; EN61010‐1 Over‐voltage CAT III 600V, Pollution Degree 2
Shock and Vibration	Sinusoidal vibration MIL‐PRF‐28800F for a Class II instrument
Drop Protection	1.2m (4’) drop onto hardwood or concrete flooring

ELECTRICAL SPECIFICATIONS

Function	Range	Resolution	Accuracy (of reading)
			50~100Hz	100~400Hz
AC Current	60.00 A	0.01	± (1.5% + 25 digits) < 3A ± (1.5% + 5 digits) ≥ 3A	± (2.5% + 25 digits) < 3A ± (2.5% + 5 digits) ≥ 3A
	300.0 A	0.1
Function	Range	Resolution	Accuracy (of reading)
DC Current	60.00 A ⁽¹⁾	0.01	± (1.5% + 10 digits) ⁽²⁾
	300.0 A	0.1	± (1.5% + 5 digits)
(1) < 0.3A variation when measuring in varying directions (2) Add 10d to accuracy in AUTO AC/DC sense mode
Function	Function	Resolution	Accuracy (of reading) 50Hz/60Hz
Low Pass Filter (LPF)	60.00 A	0.01	± (3.5% + 25 digits) < 3A ± (3.5% + 5 digits) ≥ 3A
	300.0 A	0.1
Cut‐off frequency (‐3db): 160Hz (approximately) Attenuation characteristic: ‐24db per octave (approximately)
Function	Range	Resolution	Accuracy (of reading)
Inrush Current	300.0 A	0.1	± (3.5% + 5 digits)
Integration time: 100ms Trigger current (threshold): 5A
Voltage Detector	80V~600VAC	n/a	n/a
The tip of the clamp offers the optimum sensitivity

Notes:

Clamp position error: ±1.5% of reading
Accuracy is given as ± (% of reading + least significant digit) at 23C ±5C with relative humidity lower than 80%.
ACA specifications are for AC Coupled, True RMS. For square wave the accuracy for >100Hz is unspecified.
For non‐sinusoidal waveforms, additional accuracy Crest Factor (C.F.) considerations exist as detailed below:
- Add 3.0% for C.F. 1.0~2.0
- Add 5.0% for C.F. 2.0~2.5
- Add 7.0% for C.F. 2.5~3.0

Tech Specs

Clamp Meters/Clamp Meters Template
True RMS	Yes
Maximum Current AC	300 A
Maximum Current DC	300 A
Maximum Voltage AC	600 V
Maximum Conductor Size	22 MM (0.866 IN)
Resistance	No
Capacitance	No
Auto Ranging/Manual	Auto Ranging
In-Rush Current	Yes
Test Equipment General Attributes
Unique Features	True RMS for accurate readings of noisy, distorted or non-sinusoidal waveforms Compact 0.8" (22mm) jaw size accommodates conductors up to 300MCM and allows measurements in tight locations Zero function for accurate DC measurements Unique Smart Auto Sense feature Low Pass Filter (LPF) for accurate measurement of variable frequency drive signals Built-in Non-Contact Voltage (NCV) detector for quick detection of live voltage Inrush current measurement 6000 count backlit LCD display NIST
Warranty	1 YEARS
Safety Approval	CE, UL
Product Weight	140 GRAMS (0.3086 LBS)
Product Height	2.4 IN
Product Length	5.8 IN
Product Width	1.2 IN
Calibration Included	NIST Calibration
Power Supply Voltage	Battery Powered
Country of Origin	Taiwan

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Extech MA145 True RMS 300A AC/DC Mini Clamp Meter + NCV + NIST

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Extech MA145 - True RMS 300A AC/DC Mini Clamp Meter + NCV + NIST

Meter Description

Display Description

Extech MA145 True RMS 300A AC/DC Clamp Meter Specifications

Tech Specs

Clamp Meters/Clamp Meters Template

Test Equipment General Attributes

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