
Model |
NR-FV04 *1 |
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Type |
Pulse measurement unit |
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Input method |
Insulated single-end input, channels insulated from each other, input channels insulated from other units (PC) |
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Number of channels |
4 ch *2 |
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Measurement cycle |
Maximum sampling cycle: 1 μs (1 MHz) to 60 s |
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A/D converting system |
Successive approximation, simultaneous sampling of all channels |
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A/D resolution |
14 bit |
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Input frequency band |
250 kHz (−3 dB or more) |
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Low pass filter |
PASS, 1.5 kHz, 15 kHz, 50 kHz |
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Pulse input |
Input type |
Pulse frequency, pulse count (Single-phase input) |
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Maximum input voltage |
±700 V *3 |
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Threshold voltage |
+100 V, +50 V, +20 V, +10 V, +5 V, +2.5 V, +1 V, +500 mV, +250 mV, +100 mV, +50 mV, 0 V |
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Minimum pulse duration |
2 μs or more for both ON and OFF |
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Hysteresis |
AUTO, 100 mV, 500 mV, 5 V |
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Pulse divisions |
1 to 64 (Can be set to units of 1 division) |
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Input coupling |
DC rising edge, DC falling edge, AC rising edge, AC falling edge |
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Digital filter |
Pulse frequency: Averaging rate of 1 to 32768 (automatically selected), Pulse count: None |
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Predictive functions |
Predictive calculation, Stop prediction (OFF, ×1.5, ×3, ×5, ×8, ×16) |
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Sensor power output |
Dedicated connectors for OP-88003 (AUX POWER) × 2 when using OP-88003; +12 V, 50 mA or +5 V, 50 mA |
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Voltage input |
Input type |
±100 V, ±50 V, ±20 V, ±10 V, ±5 V, ±2 V |
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Maximum input voltage |
±700 V *3 |
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Digital filter |
Averaging rate: 1 to 128 (automatically selected) |
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Input coupling |
DC, AC |
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Common mode noise reduction ratio |
80 dB or more (at up to 60 Hz DC) |
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Residual noise level |
0.02% of F.S., LPF: 1.5 kHz (200 μs/S, digital filter: ON); 0.05% of F.S., LPF: PASS |
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Measurement range |
Pulse frequency |
Measurable range: 0.05 to 16000.00 Hz, Display resolution: 0.01 to 1.00 Hz (selected automatically according to frequency) |
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Pulse count |
Measurable range: 0 to 65,000 counts/sampling cycle, Display resolution: 1 count |
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±100 V |
Measurable range: −110.000 to +110.000 V, Display resolution: 5 mV |
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±50 V |
Measurable range: −55.000 to +55.000 V, Display resolution: 2 mV |
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±20 V |
Measurable range: −22.000 to +22.000 V, Display resolution: 1 mV |
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±10 V |
Measurable range: −11.0000 to +11.0000 V, Display resolution: 0.5 mV |
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±5 V |
Measurable range: −5.5000 to +5.5000 V, Display resolution: 0.2 mV |
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±2 V |
Measurable range: −2.2000 to +2.2000 V, Display resolution: 0.1 mV |
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Measurement accuracy |
Pulse frequency |
±0.07% of rdg, ±0.01 Hz (20 Hz to 15 kHz, 20 ms/S, with digital filter ON) |
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Voltage input |
±0.1% of F.S., LPF: 500 Hz, with digital filter ON |
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Withstand voltage |
Input to system bus/earth |
2200 VAC (50/60 Hz) for 1 minute |
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Connector format |
Insulated BNC connector |
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Input impedance |
1 MΩ ±1%, approx. 30 pF |
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Buffer memory |
16M data*4 |
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Warm up time |
30 minutes or more |
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Maximum allowable voltage to ground |
[When using OP-89263 1:1 voltage-resistant probe] Measurement terminal, GND terminal: 300 Vrms (CAT II); |
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Rating |
Power consumption |
4 W or less (including OP-88003 sensor power supply) |
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Environmental resistance |
Insulation resistance |
500 VDC, 10 MΩ or more |
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Ambient temperature |
0 to +40°C 32°F to 104°F |
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Relative humidity |
10 to 85% RH (no condensation) |
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Weight |
Approx. 270 g 9.53 oz |
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*1 The above specifications are the values when zero point adjustment is performed after the warm-up period in an environment with a temperature of 23°C ±3°C 73.4°F ±5.4°F. | ||||
All PLC Direct products come with a 1-year warranty. The warranty is issued by PLC Direct. Warranty coverage commences at the date of purchase. The warranty is for mechanical defects or failures not caused by human factors including but not limited to (a) incorrect installation, (b) operating the unit in sub-optimal conditions or in scenarios not recommended by the manufacturer, (c) poor unit maintenance, etc. The warranty does not cover programming or software related issues.
If the product is eligible for PLC Direct’s warranty coverage and the customer encounters an issue with the product, we will request the item is shipped to us for diagnosis and examination. Regardless of the cause of product issues, the customer will bear responsibility for the cost of shipping the unit to PLC Direct for evaluation. Where the unit was damaged by human factors, we will offer a repair or replace quote; in cases where damage was caused by human factors, the customer is responsible for the cost of shipping the repaired/replaced unit from PLC Direct to the customer. Where the unit was not damaged by human factors but is covered by PLC Direct’s warranty, we will repair or replace the unit at our cost (or, in rare cases, refund you your purchase); in such cases, PLC Direct will bear the cost of shipping the repaired or replaced product back to the customer. It is up to PLC Direct’s discretion whether to repair, replace, or refund the customer in such cases. Diagnoses can take time to complete based on technician availability and the complexity of diagnosis.
In no event shall PLC Direct be liable for any damages except actual damages up to, but not exceeding, the amount paid to us for the product, including we shall not be liable for any consequential or indirect damages or lost profits whether or not advised of same.
PLC Direct offers free shipping worldwide. Product ship from a various warehouses worldwide based on the customer's and the product's location. The estimated delivery date on the product page is PLC Direct's best estimated assuming a US-based shipping destination.
Regardless of where the product is shipping from, PLC Direct covers all duties for US-based shipping destinations. For non-US-based shipping destinations, customers are responsible for duties as appropriate.
PLC Direct's focus is on balancing price with lead time. Some but not all products can be expedited. If you have questions about delivery ETAs, please contact our team.

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