PRECISION DC VOLTMETER DM7275

7-1/2 Digit DC Voltmeter for R&D to Production Lines

Overview
Features
Specifications
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-02 model
-03 model

The DM7275 Precision DC Voltmeter delivers superior measurement accuracy of 20 ppm (0.002%), an accuracy level that is demanded by advanced applications such as aging tests of lithium-ion batteries. Other key features include contact check to maximize measurement reliability, binning and temperature compensation, making the voltmeter ideal for developing and manufacturing Li-ion batteries, electrical double-layer capacitors, electric vehicle components, and other next generation devices.

DM7275 Precision DC Voltmeter Introductory Video

Key Features

Basic model with 1-year 20ppm Accuracy: DM7275
Capacitance contact check (using built-in C-monitor)
Supports global production with built-in variable power supply
Built-in EXT I/O, LAN, and USB

Model No. (Order Code)

DM7275-01
DM7275-02	Built-in GP-IB
DM7275-03	Built-in RS-232C

Note: Measurement probes are not included. Purchase the probes appropriate for your application separately

Fully-Automatic Self-Calibration and Highly-Stable Voltage Reference

Internal voltage reference represents screened components that have passed Hioki's special in-house tests and undergone long-term evaluation before being embedded in the system. Combining this with HIOKI’s original fully automatic “Self-calibration” technology, we are able to offer a 1-year guaranteed 20ppm accuracy.

Measurement performance resistant to temperature changes and at high repeatability

The DM7275 is equipped with a measurement engine resistant to extreme temperature changes even outside product specifications

Simultaneous Temperature Measurement + Display Converted Voltage in Standard Temperature

The open circuit voltage (OCV) for lithium-ion batteries can fluctuate by several dozen μV if the ambient temperature fluctuates by even 1°C (1.8°F). For components with this kind of temperature characteristic, you can use the temperature compensation function to display a value converted into a standard temperature voltage from the registered temperature coefficient. This is a new approach made possible by the DC voltmeter DM Series, which can measure both temperature and voltage simultaneously.

Basic specifications

Accuracy guaranteed: 1 year

DC Voltage	100 mV ( ±120.000 00 mV) to 1000 V ( ±1000.000 0 V ), 5 ranges
Basic accuracy	10 V range: ±0.0020% rdg. ±12 μV
Temperature	-10.0°C to 60.0°C (14.0°F to 140°F), combined with sensor Z2001: ±0.5°C (5.0°C to 35°C)
Integration time	Integration time unit: PLC/ms (PLC setting: 0.02/ 0.2/ 1/ 10/ 100, ms setting: 1 ms to 9999 ms)
Measurement support functions	Smoothing function, null, temperature compensation, scaling, over-range display, self-calibration, auto-hold, contact check
Management support functions	Comparator, BIN, absolute value judgment, label display, statistics, measurement information, communication monitor, EXT. I/O TEST
Contact check	Check signal: 10 mV rms, threshold value: 0.5 nF to 50 nF (Cannot use in the 100 V/1000 V ranges), Contact check integration time: 1 ms to 100 ms
Interfaces	Standard: LAN (100BASE-TX), EXT. I/O, USB flash drive / USB device (USB2.0 Full-Speed) Optional: GP-IB (-02 type only) / RS-232C (-03 type only) / PRINTER (-03 type only)
Power supply	100 to 240 V AC, 50/60 Hz, 30 VA
Dimensions and mass	215 mm (8.46 in) W × 88 mm (3.46 in) H × 232 mm (9.13 in) D (-01 type): 2.3 kg (81.1 oz), (-02/-03 type): 2.4 kg (84.7 oz)
Included accessories	Instruction manual ×1, power cord ×1, application disk (CD-R) ×1