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F/V UNIT 8940 < Recorder < Products
Recorder Option (Input units for the MEMORY HiCORDER series)

F/V UNIT 8940

CE
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Handles tasks ranging from pulse input from rotary equipment to current measurement
In addition to frequency measurement, this single unit handles integration measurement, pulse duty ratio measurement, voltage measurement, and current measurement
  • Simply insert into the HiCORDER for use
  • Rapid 10 µs F/V input response
  • Also suitable for current waveform measurement
  • Suitable applications
Engine or crank rotation, Wheel and transmission gear rotation, Vehicle speed encoder output, Fuel, cooling water flow quantity, Handle angle, Dynamo frequency for generators
Basic specifications
Input Number of channels: 2  Voltage input: BNC terminal
Input isolated from output, inter-channel isolation
Sensor connector terminal Number of channels: 2  (for current measurement)
Models that allow unit insertion up to a total of 4 channels: 8835-01, 8841, 8842, 8720
Models that allow unit insertion up to a total of 6 channels: 8826, serial no. 1999-0338386 or later
Compatible current sensors 9272-10, 9277, 9278, 9279, 3273, 3273-50
Frequency range 0.05 Hz to 5 kHz/division, 11 ranges, 5 (r/min) to 500 (r/min)/division, 5 ranges,
* When attached to recorder where full-scale (f.s.) = 20 divisions

0.1 Hz to 10 kHz/division, 11 ranges, 10 (r/min) to 1 k (r/min)/division, 5 ranges,
* When attached to recorder where full-scale (f.s.) = 10 divisions

P50 Hz (40 to 60 Hz), P60 Hz (50 to 70 Hz)* 9322 DIFFERENTIAL PROBE or 9303 PT is necessary for measuring power-line frequency
Integration range 5 counts to 500 k counts/division, 11 ranges,  * When attached to recorder where full-scale (f.s.) = 20 divisions
10 counts to 1 M counts/division, 11 ranges,  * When attached to recorder where full-scale (f.s.) = 10 divisions
Pulse duty ratio measurement range 100% f.s., 1 range
Measurement range: 10 Hz to 100 kHz
Current range 5 mA to 100 A/division, 10 ranges, linked to use with type of the clamp-on sensor
* When attached to recorder where full-scale (f.s.) = 20 divisions

10 mA to 200 A/division, 10 ranges, linked to use with type of the clamp-on sensor
* When attached to recorder where full-scale (f.s.) = 10 divisions
Voltage range 0.5 mV to 2 V/division, 12 ranges, * When attached to recorder where full-scale (f.s.) = 20 divisions
1 mV to 5 V/division, 12 ranges, * When attached to recorder where full-scale (f.s.)= 10 divisions
Max. allowable input: 30 V rms or 60 V DC  low-pass filter: 5/500/5 k/100 kHz or OFF
Measurent resolution 1/80 of range, *When attached to recorder where full-scale(f.s.) = 20 divisions. (1/80 or 1/64 of range during use of clamp sensor 9279)
1/160 fo range, *When attached to recorder where full-scale(f.s.) = 10 divisions. (1/160 or 1/128 of range during use of clamp sensor 9279)
Max. sampling period 1 µs (voltage, current, integration), 1.125 µs (frequency, pulse duty ratio)
Other functions Voltage input pull-up: ON (10 k-ohm)/OFF  Input coupling: DC, GND, AC (voltage, current), DC (others)
Max. rated voltage to earth 30 V rms or 60 V DC   (upper voltage which when applied to input channel casing or between input channels does not damage them)
Accessories None * The input cord and conversion cable are optional
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