久久免费美女黄片,国产黄大片在线观看画质优化 ,五月天亚洲成人电影

臺灣標準電機SEW儀器儀表--1620 ER Earth Resistance Testers 3 Wire Digital

1620 ER Earth Resistance Testers
3 Wire (Digital)

FEATURES

Microprocessor controlled.
Measure earth resistance in three ranges. (40 Ohm/400 Ohm/4k Ohm)
Capable of measuring earth voltage.
3-3/4 digit (4000 counts).
LCD backlight display.
2mA measuring current permits the testing of earth resistance without tripping earth leakage current circuit breakers in the circuit.
Data Hold function.
Relative function.
Auto power off function.
Battery operated.
Low Battery indication.
Small and light weight, easy to use.
CAT IV 400V
, ,

SPECIFICATIONS

Measuring Ranges	Earth Resistance : 0 ~ 40 Ohm/ 0 ~ 400 Ohm/0 ~ 4k Ohm
	Earth Voltage : 0 ~ 400V (40~500Hz)
Accuracy	Earth Resistance : +/- (2% rdg + 3 dgt)
	Earth Voltage : +/- (2% rdg + 3 dgt)
Earth Resistance Resolution	0 ~ 40 Ohm : 0.01 Ohm
	0 ~ 400 Ohm : 0.1 Ohm
	0 ~ 4k Ohm : 1 Ohm
Measurement System	Earth resistance by constant current inventer 820 Hz. approx. 2mA
Power Source	1.5V (AA) x 6
Dimensions	163 (L) x 102 (W) x 50 (D) mm
Weight	440g approx. (batteries included)
Accessories	Test leads (AL-36: red-15m, yellow-10m, green-5m)
	Auxiliary earth spikes
	Heavy-duty case
	Instruction manual
	Batteries

特點

● 微處理器系統(tǒng)控制設計。
● 可量測接地電阻(0-4kΩ)和接地電壓(0-400V)。
● 量測電流僅有2mA不易影響漏電斷路器的跳脫。

● LCD有背光設計。
● LCD顯示讀值鎖定功能。
● 自動歸零功能設計。
● 自動關機設計。
● 電源不足顯示
● 體積小、重量輕、方便使用和攜帶
●
CAT IV 400V

規(guī) 格 (23°C±5°C ＜80%R.H.)