FREQ UNIT
8970
Frequency, Rotation, and Pulse Measurement
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Key Features • Fluctuating frequency measurement of power lines for commercial power (direct input of up to 200 V class line) • Isolated 2 channel input • Max. rated voltage to ground: 300 V AC or DC (CAT II) • Pulse counting for the encoder • Used in measuring motor rotation, pulse integration, duty ratio, and pulse width • Encoder divider function
Model No. (Order Code)
| 8970 | For MR6000, MR8847A, MR8827, and similar products |
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Note: This module must be used with the Memory HiCorder. Input cords are not included. Please purchase them separately.
Record frequency fluctuation and pulse count/integration data
Use the Frequency Unit 8970 to record measured waveform frequency, RPM, input pulse integration, duty ratio, and pulse width variations. It can accommodate numerous use cases, including measurement of motor RPM, vehicle speed, and power supply frequency fluctuations. Thanks to a maximum input voltage of 400 V DC, it can also directly measure 3-phase circuits carrying up to 200 V.
List of Available Memory HiCorders
Please refer to the table here for the types of input units that can be used for each Memory HiCorder.
Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)
| Measurement functions | Number of channels: 2, for voltage input based frequency measurement, rotation, power frequency, integration, pulse duty ratio, pulse width |
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| Input connectors | Isolated BNC connector (input impedance 1 MΩ, input capacitance 30 pF), Max. rated voltage to earth: 300 V AC, DC (with input isolated from the unit, the maximum voltage that can be applied between input channel and chassis and between input channels without damage) |
| Frequency mode | Range: Between DC to 100kHz (minimum pulse width 2μs), 1Hz/div to 5kHz/div (full scale= 20 div), 8 settings Accuracy: ±0.1% f.s. (exclude 5kHz/div), ±0.7% f.s. (at 5kHz/div) |
| Rotation mode | Range: Between 0 to 2 million rotations/minute (minimum pulse width 2μs), 100 (r/min)/div to 100k (r/min)/div (full scale= 20 div), 7 settings Accuracy: ±0.1% f.s. (excluding 100k (r/min)/div), ±0.7% f.s. (at 100k (r/min)/div) |
| Power frequency mode | Range: 50Hz (40 - 60Hz), 60Hz (50 - 70Hz), 400Hz (390 - 410Hz) (full scale= 20 div), 3 settings Accuracy: ±0.03Hz (exclude 400Hz range), ±0.1Hz (400Hz range) |
| Integration mode | Range: 2k counts/div to 1M counts/div, 6 settings Accuracy: ±range/2000 |
| Duty ratio mode | Range: Between 10Hz to 100kHz (minimum pulse width 2μs), 5%/div (full scale=20 div) Accuracy: ±1% (10Hz to 10kHz), ±4% (10kHz to 100kHz) |
| Pulse width mode | Range: Between 2μs to 2sec, 500μs/div to 100ms/dv (full scale=20 div) Accuracy: ±0.1% f.s. |
| Measurement resolution | 1/2000 of range (Integration mode), 1/500 of range (exclude integration, power frequency mode), 1/100 of range (power frequency mode) |
| Input voltage range and threshold level | ±10V to ±400V, 6 settings, selectable threshold level at each range |
| Other functions | Slope, Level, Hold, Smoothing, Low-pass filter, Switchable DC/AC input coupling, Frequency dividing, Integration over-range keep/return |
| Dimensions and mass | 106 mm (4.17 in) W × 19.8 mm (0.78 in) H × 196.5 mm (7.74 in) D, 250 g (8.8 oz) |
| Accessories | None |
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Seminar Videos On Demand
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Seminar Schedule
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Catalogs
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User Guides
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Manuals
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ANALOG UNIT 8966, TEMP UNIT 8967, HIGH RESOLUTION UNIT 8968, STRAIN UNIT U8969, FREQ UNIT 8970, CURRENT UNIT 8971, DC/RMS UNIT 8972, LOGIC UNIT 8973, HIGH VOLTAGE UNIT U8974, 4CH ANALOG UNIT U8975, HIGH SPEED ANALOG UNIT U8976, 3CH CURRENT UNIT U8977, 4CH ANALOG UNIT U8978, CHARGE UNIT U8979, DIGITAL VOLTMETER UNIT MR8990, DIGITAL VOLTMETER UNIT U8991, ARBITRARY WAVEFORM GENERATOR UNIT U8793, WAVEFORM GENERATOR UNIT MR8790, PULSE GENERATOR UNIT MR8791, VIR GENERATOR UNIT U8794 [2MB] |
Instruction Manual |
Japanese English |
Ver.09 |
Outline Drawings
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FREQ UNIT 8970 [128KB] |
Ver.00 |
Technical Notes
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Declaration of Conformity
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Drivers, Firmware
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Others
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Gallery
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