Crown CT44051, Original Instructions Manual

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English
7
English
8
A range, fuse: FF 10A/250V
*Conversion rate: about 3s/second
*Display:1999counts LED display
*Over range display: ‘OL’ displayed
*Low voltage display of ba tt ery: displayed when the working voltage is low
*Input polarity indicator: shown automa ti cally
*Ba tt ery:3 X1.5V AAA
*Size: 147mm (L)*71mm (W)*45mm (H)
*Weight: about 220g (ba
tt ery excluded)
Accuracy index
Accuracy: ±（ %digit ） ,one year warranty from the manufacture date
Condi ti ons: surroundings temperature from 18 ℃ to 28 ℃，＜ 80%RH
Direct current of voltage
Input resistance: 1M Ω
Maximum input voltage ： 600V
Alternative current of voltage
input resistance: 1M Ω
Maximum input voltage ： 600V
Frequency response: 40HZ to 400HZ
Resistance
Overload protec ti on:250V
Open circuit voltage: 2.4V
Diode and Buzzer
Overload protec ti on:250V
Transistor
Direct current
Overload protec ti on: mA range with F 200mA/250V and 20A range with F10/250V
When the current is more than 5 A, the test ti me should be less than 10 mints and one min
should be given to stop tes ti ng a ft er such measurement.
Operation instruction
Regular operation
Short press the bu tt on and enter into ‘ HOLD ’ mode.
The reading hold mode can keep the current reading on the display, change the measurement
func
ti on posi ti on or press and hold the key again to exit the data hold mode.
Backlit and the illumination function
The meter has backlit and illumina ti on func ti on for users ’ convenient reading of measuring
results in the dark situa ti ons. To enter and exit this mode ， please operate as below:
1. Short press key to turn on backlight and short press again to exit. It turns o ff
automa ti cally with no opera ti on for 15S.