EXTECH MA145 Mini Clamp Meters + NCV

EXTECH MA145 Specifications:

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	Range	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

GENERAL SPECIFCATIONS

• 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
• 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)
• Weight                                140g (4.9 oz.)
• Dimensions                         60 x 147 x 31.5mm (2.4 x 5.8 x 1.2”)
• 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

Extech MA145 Battery Replacement

1. Remove the Phillips head screw at the lower back of the meter.

2. Open the battery compartment 3. Replace the two LR44 batteries observing correct polarity.

4. Re‐assemble the meter before use

5. Safety: Please dispose of batteries responsibly; never dispose of batteries in a fire, batteries may explode or leak; never mix battery types, install new batteries of the same type. Never dispose of used batteries or rechargeable batteries in household waste. As consumers, users are legally required to take used batteries to appropriate collection sites, the retail store where the batteries were purchased, or wherever batteries are sold.

Disposal: Do not dispose of this instrument in household waste. The user is obligated to take end‐of‐life devices to a designated collection point for the disposal of electrical and electronic equipment.