中國臺灣七泰3位半數字式電表DM-31的產品介紹:

3位半數字式電錶MODEL DM-31

特性

? 3 位半顯示（1999）

? 可量測直流電壓（電流），交流電壓，（電流），頻率，歐姆值以及位置轉換器等

? 類比信號量測

? DIN規格 96×48 mm.

詳細規格

Display............... 3 1/2 (1999) 0.56〞(14.2mm), Red LED

Accuracy........................................ DC ±0.1% F.S.±1 digit

AC ±0.25% F.S.±1 digit

Hz±0.2% RD.±2 digits

Ohm±0.2%RD.±1 digit

RTD ±0.5℃±2 digits

Conversion rate (about) 3/sec. (DC), 1/sec. (AC, Hz, RTD)

6/sec. (Ohm)

Over input indication.................................................... "1"

Polarity.................................................. Only "－" display

Frequency range ..................... 45～400Hz for AC Range

Operating temp. .................................................. 0～60℃

Storage temp. .................................................. -10～70℃

Temp. coefficient ...............................................................

..................... ≦100PPM/℃(≦60PPM/℃, 25℃±10℃)

Max. relative humidity ............................................... 95%

Dielectric strength ..... AC 2 KV/1 min. (input/power/case)

Surge test ..............................4 KV/1.2×50μs, IEC 255-4

Aux. power .................. AC 115V/230V ±10%, 50/60 Hz

DC 24V, 48V, 110V, ±20% (option)

Power consumption ........................... AC 3.5VA, DC 3W

Weight (about) ......................................................... 320g