Twilight DT4200, Инструкция по эксплуатации

Страница: 17 / 80

11
1
Overview
1.1 Overview and Features
This measuring instrument is a multi-function digital multimeter
that ensures both safety and durability.
Main features and functions
• Speedy display of the RMS measured value
• Environmental performance (can be used anywhere)
(Operation temperature: DT4221, DT4222:
−
10 to 50°C
DT4223, DT4224:
−
10 to 65°C)
• Filter function that controls the in fl uence of noise
• Hold function that retains the screen display
• Solid body which can be used for an extended period of time (drop-proof)
• Speedy measurement via a fast response*
* Response time of 0 V to 100 V is approx. 0.6 seconds
(until the value falls within the accuracy speci fi cation range)
• Voltage input protection function to ensure safe measurement (DT4223,
DT4224)
Protective circuitry to ensure safety in the event of voltage measurement
using the continuity, resistance, capacitance, or diode range (Voltage
Input Protected)
Red backlight to warn user of erroneous voltage input
• Protective circuitry operates in the event of erroneous voltage input to
limit the amount of current fl owing to the instrument to 1.5 mA or less.
• This safe design keeps circuit breakers from tripping and sparks from
being produced at the tips of test leads.
• Although the DT4221 and DT4222 will not break if they are used to
measure voltage in continuity, resistance, capacitance, or diode range,
those models do not provide functionality to limit the amount of current
fl owing to the instrument in the event of such measurement to 1.5 mA
or less, or to warn the user of erroneous voltage input by turning the
backlight red.