Đồng hồ vạn năng Extech EX450

Đồng hồ vạn năng Extech EX450

Input Protection Limits
V	DC or V AC 600V DC/AC, 200Vrms on 200mV range
mA	AC/DC 200mA 250V fast acting fuse
A	AC/DC 20A 250V fast acting fuse(30 seconds max every 15 minutes)
Resistance, Diode Test, Continuity	250Vrms for 15sec max
General
Diode Test	Test current of 0.3mA maximum, open circuit voltage 1.5V DC typical
Continuity Check	Audible signal will sound if the resistance is less than 150Ω (approx.), test current <0.7mA
IR Spectral response	6 to 16μm
IR Emissivity	0.95 fixed
IR distance	ratio 8:1
Input Impedance	>7.5M Ω (VDC & VAC)
AC Response	Average responding
ACV Bandwidth	50Hz to 1kHz
Display	2000 count backlit liquid crystal
Overrange indication	“OL” is displayed
Auto Power Off	15 minutes (approximately)
Polarity	Automatic (no indication for positive); Minus (-) sign for negative
Measurement Rate	2 times per second, nominal
Low Battery Indication	“ ” is displayed if battery voltage drops below operating voltage
Battery	One 9 volt (NEDA 1604) battery
Fuses	mA, μA ranges; 0.2A/250V fast blow A range; 20A/250V ceramic fast blow
Operating Temperature	41°F to 104°F (5°C to 40°C)
Storage Temperature	-4°F to 140°F (-20°C to 60°C)
Operating Humidity	Max 80% up to 87°F (31º°C) decreasing linearly to 50% at 104°F(40°C)
Storage Humidity	<80%
Operating Altitude	7000ft. (2000meters) maximum.
Weight	0.753lb (342g) (includes holster).
Size	7.36” x 3.2” x 2.0” (187 x 81 x 50mm) (includes holster)
Safety	For indoor use and in accordance with the requirements for double insulation to IEC1010-1 (1995), EN61010-1 (1995) Overvoltage Category III, Pollution Degree 2.

Hãng sản xuất: EXTECH - Mỹ
Bảo hành: 12 tháng

Báo giá Đồng hồ vạn năng Extech EX450

Features:

Non-contact InfraRed thermometer measures surface temperature of objects unsafe to contact or difficult to reach
InfraRed features 8:1 distance to target ratio with 0.95 fixed emissivity
Input fuse protection and mis-connection warnings with audible and visible signals
Auto power off, Data Hold

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