The DT4255 is a digital multimeter designed for maximum safety with voltage measurement terminals that are protected by a fuse.
When using the resistance measurement function, a protective circuit functions to prevent a short-circuit accident in the event of erroneous operation such improperly supplying voltage input. Even if a short-circuit occurs inside the tester, a current-limiting resistor will limit any short-circuit current while a fast-blow fuse quickly and reliably disconnects the tester circuitry, preventing a short-circuit accident.
- Clamp-on sensor based current measurement eliminates the cause of accidents
- Accurately measure the fundamental wave alone by eliminating harmonic components with the DMMs low-pass filter function.
- True RMS measurement for accurate measurement of even distorted current waveforms
- To ensure operators ability to use measuring instruments safely, IEC 61010 classifies the locations in which instruments are used into a series of safety-based measurement categories (ranging from CAT II to CAT IV). Using an instrument that does not satisfy the required safety level can lead to an electrical accident.
- DC Voltage range: 600.0 mV to 1000 V, 5 ranges, Basic accuracy: +/- 0.3 % rdg. +/- 3 dgt.
- AC Voltage range: 6.000 V to 1000 V, 4 ranges, Frequency characteristics: 40 Hz to 1 kHz. Basic accuracy 40 to 500 Hz : +/- 0.9 % rdg. +/- 3 dgt. (True RMS, crest factor 3)
- AUTO AC/DCV: Yes
- Resistance range: 600.0 ohms to 60.00 milliohms, 6 ranges, Basic accuracy: +/- 0.7 % rdg. +/- 3 dgt.
- AC Current range (use with Clamp on probes): 10.00 A to 1000 A, 7 ranges, Add the Clamp on probe accuracy to basic accuracy 40 to 1 kHz : +/- 0.9 % rdg. +/- 3 dgt. (True RMS, crest factor 3)
- Voltage detection Hi: AC40 V to 600 V, Lo: AC80 V to 600 V
- Capacitance range: 1.000 uF to 10.00 mF, 5 ranges, Basic accuracy: +/- 1.9 % rdg. +/- 5 dgt.
- Frequency range: 99.99 Hz to 99.99 kHz, 4 ranges (limited by the minimum detectable voltage), Basic accuracy: +/- 0.1 % rdg. +/- 1 dgt.
- Continuity check: Continuity threshold [ON]: 25 ohms or less, [OFF]: 245 ohms or more, Response time: 0.5 ms or more
- Diode test: Open terminal voltage: 5.0 V or less, Testing current 0.5 mA or less,
- Threshold of forward voltage: 0.15 V to 1.5 V
- Other functions: Filter function, display value hold, auto hold, MAX/MIN/Average value display, relative value display, auto-power save, USB communication (option)
- Display: Main and Sub displays: 4-digits LCD, max. 6000 digits, bar graph. Display refresh rates 5 times/s (Capacitance measurement: 0.05 to 5 times/s, depending on measured value, Frequency: 1 to 2 time/s)
- Power supply: LR03 alkaline batteries x4, Continuous use: 130 hours (backlight OFF)
- Dimensions and mass: 84 mm x 174 mm x 52 mm (2.05 in), 390 g (including batteries and holster)
- Accessories: Test lead L9207-10 x1, Holster x1, Instruction manual x1, LR03 alkaline battery x4
