HIOKI MR8741/MR8741+ MR8990 DMM-Station
• High-precision measurement for applications such as investigating minute voltage fluctuations in sensor output
• The MR8741 (MR8740) can save data from 16 (54) Digital Voltmeter Units at once. (DCV measurement only)
|
|
MR8740 |
MR8741 |
|
Number of channels |
Block I: 16 analog units] From 32 analog + 8 standard logic [Block I: 13 analog units + 3 logic units] 26 analog + 56 logic (8 standard logic + 48 logic unit) [Block II: 11 analog units] From 22 analog + 8 standard logic [Block II: 8 analog units + 3 logic units] 16 analog + 56 logic (8 standard logic + 48 logic unit) *Instrument consists of two blocks, Block I and Block II *Block I and Block II start measurement simultaneously by means of trigger synchronization (internal setting)
*Analog unit channels are isolated from each other and from the recorder. Logic unit channels and standard logic terminal channels share a common GND with the recorder. |
[8 analog units] From 16 analog + 16 standard logic [5 analog units + 3 logic units] 10 analog + 64 logic (16 standard logic + 48 logic unit)
*Analog unit channels are isolated from each other and from the recorder. Logic unit channels and standard logic terminal channels share a common GND with the recorder. |
|
Memory capacity |
16 MW/ch (fixed), total of 864 MW installed |
16 MW/ch (fixed), total of 256 MW installed |
|
Removable storage |
USB memory (2.0) |
USB memory (2.0) |
|
Display |
None (1 digital DVI terminal per block, 800 × 600 dots) |
None (1 digital DVI terminal, 800 × 600 dots) |
|
External interfaces |
[LAN] 100Base-TX (DHCP and DNS support, FTP server, HTTP server) [USB] USB 2.0 Series A receptacle × 2 (mouse operation) |
[LAN] 100Base-TX (DHCP and DNS support, FTP server, HTTP server) [USB] USB 2.0 Series A receptacle × 2 (mouse operation) |
|
Power supply |
100 to 240 V AC, 50/60 Hz (250 VA max.) |
100 to 240 V AC, 50/60 Hz (120 VA max.) |
|
Dimensions and mass |
426 mm (16.77 in)W × 177 mm (6.97 in)H × 505 mm (19.88 in)D, 10.8 kg (3809.5 oz) (main unit only) |
350 mm (13.78 in)W × 160 mm (6.30 in)H × 320 mm (12.60 in)D, 5.4 kg (190.5 oz) (main unit only) |
|
Accessories |
Instruction manual ×1, Application disk (Wave viewer Wv, Communication commands table) ×1, Power cord ×1 |
Instruction manual ×1, Application disk (Wave viewer Wv, Communication commands table) ×1, Power cord ×1 |
■ DVM Unit MR8990 Basic specifications
|
Measurement functions |
Install into Memory HiCorder MR8740/8741 for use; 2 channels of DC voltage measurement |
|
Measurement ranges (20 div. f.s.) |
100 mV range (5 mV/div.): -120.0000 mV to 120.0000mV, 0.1 μV resolution to 500 V range (50 V/div.): -500.000 V to 500.000 V, 1 mV resolution, 5 ranges |
|
Measurement accuracy |
Basic accuracy: ±0.01% rdg. ±0.0025% f.s. |
|
Max. allowable input |
500 V DC (upper limit voltage that can be applied between input terminals without damage) |
|
Max. rated voltage to earth |
300 V AC/DC (input and instrument are isolated; upper limit voltage that can be applied between input channels or between input channels and chassis without damage) |
|
Max. sampling rate |
2 ms (500 samples/s) |
• Use the new DVM Unit MR8990 to measure DC voltages on 2 channels (for use with the Memory HiCorder MR8741/8740 only)
• High-precision measurement for applications such as investigating minute voltage fluctuations in sensor output
• The MR8741 (MR8740) can save data from 16 (54) Digital Voltmeter Units at once. (DCV measurement 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)
