Model |
NR-ST04 *1*2
|
Type |
Strain measurement unit
|
Input method |
Balanced differential input, channels not insulated from each other, input channels insulated from other units (PC)
|
Number of channels |
4 ch *3
|
Measurement cycle |
Maximum sampling cycle: 20 μs (50 kHz) to 60 s
|
A/D converting system |
simultaneous sampling of all channels, Successive approximation
|
A/D resolution |
16 bit
|
Input frequency band |
5 kHz DC max. (−3 dB)
|
Maximum input rating |
±1.0 V
|
Withstand voltage |
1500 VAC (50/60 Hz) for 1 minute
|
Input impedance |
1 MΩ or more
|
Input Type |
±10 mV, ±1000 μST, ±10000 μST, ±2 mV, ±20 mV, ±2000 μST, ±20000 μST, ±5 mV, ±50 mV, ±5000 μST
|
Measurable range |
±50 mV: −55.00 to +55.00 mV±20 mV: −22.000 to +22.000 mV±10 mV: −11.000 to +11.000 mV±5 mV: −5.500 to +5.500 mV±2 mV: −2.2000 to +2.2000 mV±20000 μST: −22000 to +22000 μST±10000 μST: −11000.0 to +1100
|
Measurement accuracy |
±0.2% of F.S. (with low-pass filter of 8 Hz and 50 Hz sampling averaged 20 times)
|
Display Resolution |
±50 mV: 10 μV±20 mV: 1 μV±10 mV: 1 μV±5 mV: 1 μV±2 mV: 0.1 μV±20000 μST: 1 μST±10000 μST: 0.5 μST±5000 μS: 0.25 μST±2000 μST: 0.1 μST±1000 μST: 0.05 μST
|
Buffer memory |
4M data*4
|
Warm up time |
30 minutes or more
|
Applicable gauge resistance |
Quarter bridge / half bridge system: 120 Ω (A 350 Ω strain gauge requires an external bridge box.);Full bridge system: 120 Ω to 1 kΩ
|
Applied voltage |
2 VDC (±0.4%)
|
Balance adjustment |
±0.1% of F.S. (with low-pass filter of 8 Hz and 50 Hz sampling averaged 20 times), ±29 mV (during voltage input), ±29000 μST (during strain input), Electronic balancing (auto-balancing)
|
Gauge ratio |
2.0 (fixed)
|
Low pass filter |
−30 dB/oct, 1 kHz (750 Hz), 120 Hz (100 Hz), 15 Hz (12 Hz), 2 kHz (1.5 kHz), 250 Hz (200 Hz), 3.5 kHz (3 kHz), 30 Hz (25 Hz), 4 Hz (3 Hz); Value in parentheses is for 20 kHz sampling., 5 kHz, 500 Hz (370 Hz), 5th order Bessel filter, 60 Hz (50 Hz), 8 Hz (6 Hz), Auto
|
Zero-point stability |
±1.5 μST/8 h, ±2 μST/°C, ±2 μV/°C *5, ±3 μV/8 h *5
|
Gain stability |
±0.05% of F.S./°C *5, ±0.3% of F.S./8 h *5
|
Common mode noise reduction ratio |
80 dB or more (60 Hz DC max.)
|
Rating |
3.0 W or less
|
Environmental resistance |
0 to +40°C 32°F to 104°F, 10 to 85% RH (no condensation)
|
Weight |
Approx. 230 g 8.12 oz (including two OP-51584: NR-ST04 10-pole terminal blocks)
|
Brand |
Keyence
|
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