NEW

DIGITAL VOLTMETER UNIT

U8991

For minute voltage measurement, 6 1/2-digit high resolution: Max 1200000 counts

Key Features • DVM unit dedicated to 4-channel DCV measurement, 108 channels simultaneous sampling in combination with MR8740T • High-precision measurement of fine voltage fluctuation investigation etc. of sensor output • High accuracy of ±0.02 % and super-high 1.2 million-count resolution • High-speed sampling at 50 samples/s • Isolated input (channel-to-channel and channel-to-chassis: max. rated voltag to earth of 100 V AC/DC)

Model No. (Order Code)

U8991 For the MR8740-50

Note: This module must be used with the Memory HiCorder. Input cords are not included. Please purchase them separately.

Guarantee3years
CE

Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)

Measurement functionsNumber of channels: 4, for DC voltage measurement
Input terminalsIsolated BNC connectors (Input impedance: 100 MΩ or higher with 1 V f.s. to 10 V f.s. range, otherwise 10 MΩ)
Max. rated voltage to ground: 100 V AC, DC (with input isolated from the unit, the maximum voltage that can be applied between input channel and chassis and between input channels without damage)
Measurement range1, 10, 100 V f.s., 3 ranges
Measurement resolution1/1 000 000 of measurement range (using 24-bit ΔΣ modulation A/D)
Integration time20 ms × NPLC (during 50 Hz), 16.67 ms × NPLC (during 60 Hz)
Basic measurement accuracy±0.02% rdg. ±0.0025% f.s.
Maximum input voltage100 V DC (maximum voltage that can be applied across input pins without damage)
Dimensions and mass106 (4.17 in) W ×19.8 (0.78)H × 196.5 (7.74 in)D mm, 250 g (8.8 oz)
AccessoriesNone

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Outline Drawings


Ver.00

Technical Notes

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Declaration of Conformity

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Drivers, Firmware

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Options

Input cable (A)

*Voltage is limited to the specifications of the iput section

CONNECTION CORD L9790

• Flexible φ 4.1 mm (0.16 in) thin dia. • Cable allowing for up to 600 V input • 1.8 m (5.91 ft) length

ALLIGATOR CLIP L9790-01

Red/black set attaches to the ends of the Connection Cord L9790

CONTACT PIN 9790-03

Red/black set attaches to the ends of the Connection Cord L9790

GRABBER CLIP 9790-02

Red/black set attaches to the ends of the Connection Cord L9790

Input cable (B)

*Voltage is limited to the specifications of the iput section

CONNECTION CORD L9198

•φ 5.0 mm (0.20 in) dia. •Cable allows for up to 300 V input •1.7 m (5.58 ft) length •Small alligator clip

Compatible products

MEMORY HiCORDER MR8740T

• Max. 108ch Analog • Max. 96ch Analog + 48ch Logic • 20M-Sampling/s

Learn more

Applications

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