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Keyence NR-ST04

Strain measurement unit. . Series: Multi-input Data Logger. Series code: NR-X series

MPN: NR-ST04
Category: Multi-input Data Logger

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What is the Keyence NR-ST04?

Strain measurement unit. NR-ST04. Series: Multi-input Data Logger. Series code: NR-X series

Specifications

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 12
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)

NR-ST04: frequently asked questions

When can NR-ST04 be shipped?

NR-ST04 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up NR-ST04 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for NR-ST04 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for NR-ST04, subject to availability and destination.