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6 1/2-digit high resolution: Max 1200000 counts, even minute fluctuations in the output voltage of sensors



• Use the DVM Unit MR8990 to measure DC voltages on 2 channels

• High-precision measurement for applications such as investigating minute voltage fluctuations in sensor output

• For use with the Memory HiCorder (MR8741/8740, MR8827 and MR8847A only)

• Unlike standard multi-channel scan-type loggers, these instruments can perform simultaneous sampling

• High accuracy of ±0.01 % and super-high 1.2 million-count resolution • High-speed sampling at 500 samples/s

• Isolated input (channel-to-channel and channel-to-chassis: max. rated voltag to earth of 300 V AC/DC)


■ Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year) DIGITAL VOLTMETER UNIT

Measurement functions Number of channels: 2, for DC voltage measurement
Input connectors Banana input connectors (Input resistance: 100 MΩ or higher with 100 mV f.s. to 10 V f.s. range, otherwise 10 MΩ)
Max. rated voltage to earth: 300 V AC or DC (with input isolated from the main unit, the maximum voltage that can be applied between input channel and chassis, and between input channels without damage)
Measurement ranges 100 mV f.s. (5 mV/div): -120.0000 mV to 120.0000 mV, 0.1 μV resolution to 1000 V f.s. (50 V/div): -500.000 V to 500.000 V, 1 mV resolution, 5 ranges
Measurement resolution 1/50 000 of measurement range (using 24 bit ΔΣ modulation A/D)
Integration time 20 ms × NPLC (during 50 Hz), 16.67 ms × NPLC (during 60 Hz)
NPLC: 0.1 to 0.9, 1 to 9, 10 to 100 settings
Response time 2 ms + 2 × integration time or less (rise – f.s. → + f.s., fall + f.s. → – f.s.)
Basic measurement accuracy ±0.01% rdg. ±0.0025% f.s. (at range of 1000 mV f.s.)
Maximum input voltage 500 V DC (maximum voltage that can be applied between input connectors without damage)
Dimensions and mass 106 (4.17 in) W ×19.8 (0.78)H × 196.5 (7.74 in)D mm, 260 g (8.8 oz)
Accessories Instruction manual ×1 (For single product shipment only)
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