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Keyence NR-ST04
Strain measurement unit. NR-ST04. Series: Multi-input Data Logger. Series code: NR-X series
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Description
Strain measurement unit. NR-ST04. Series: Multi-input Data Logger. Series code: NR-X series
Specification
| Model Name | Strain measurement unit |
|---|---|
| Model Code | NR-ST04 |
| Series Title | Multi-input Data Logger |
| Series Code | NR-X series |
| Data Sheet URL | https://www.keyence.com/download/download/confirmation/?dlSeriesId=WS_SR57362&dlModelId=PM_117ST04&dlSiteId=1&dlLanguageId=en-US&dlLangType=en-US |
| CAD URL | https://www.keyence.com/products/daq/data-loggers/nr-x/downloads/?mode=cd&modelId=PM_117ST04 |
| Manuals URL | https://www.keyence.com/products/daq/data-loggers/nr-x/downloads/?mode=ma&modelId=PM_117ST04 |
| 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 | Successive approximation, simultaneous sampling of all channels |
| 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 - Voltage input | ±2 mV, ±5 mV, ±10 mV, ±20 mV, ±50 mV |
| Input type - Strain input | ±1000 μST, ±2000 μST, ±5000 μST, ±10000 μST, ±20000 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 +11000.0 μST±5000 μS: −5500.00 to +5500.00 μST±2000 μST: −2200.0 to +2200.0 μST±1000 μST: −1100.00 to +1100.00 μST |
| 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 - System | Electronic balancing (auto-balancing) |
| Balance adjustment - Balance adjustment accuracy | ±0.1% of F.S. (with low-pass filter of 8 Hz and 50 Hz sampling averaged 20 times) |
| Balance adjustment - Balance adjustment range | ±29000 μST (during strain input), ±29 mV (during voltage input) |
| Gauge ratio | 2.0 (fixed) |
| Low pass filter - Cutoff frequency | Auto, 5 kHz, 3.5 kHz (3 kHz), 2 kHz (1.5 kHz), 1 kHz (750 Hz), 500 Hz (370 Hz), 250 Hz (200 Hz), 120 Hz (100 Hz),60 Hz (50 Hz), 30 Hz (25 Hz), 15 Hz (12 Hz), 8 Hz (6 Hz), 4 Hz (3 Hz); Value in parentheses is for 20 kHz sampling. |
| Low pass filter - Attenuation characteristics | 5th order Bessel filter, −30 dB/oct |
| Zero-point stability - Temperature characteristics | ±2 μST/°C, ±2 μV/°C *5 |
| Zero-point stability - Chronological changes | ±1.5 μST/8 h, ±3 μV/8 h *5 |
| Gain stability - Temperature characteristics | ±0.05% of F.S./°C *5 |
| Gain stability - Chronological changes | ±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 - Ambient temperature | 0 to +40°C 32°F to 104°F |
| Environmental resistance - Relative humidity | 10 to 85% RH (no condensation) |
| Weight | Approx. 230 g 8.12 oz (including two OP-51584: NR-ST04 10-pole terminal blocks) |
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