Product Summary
Model OST-727 is a measuring instrument which measures displacement of a cone paper excited by a drive speaker with a displacement sensor, and sets frequency at the displacement peak value to Fo according to direct method. This equipment judges a cone paper to be pass or no pass about Fo frequency by setting of an upper – lower allowance.
Product specifications
- Frequency Range
- 10Hz to 10000Hz
- Frequency Resolution
- 2048 points of logarithm(between start frequency and stop frequency)
- Accuracy of Frequency
- Within 0.1%
- Distortion
- Within 3%
- Output Voltage
- 0.100 V～4.000 V (0.001V step).
Constant voltage drive (impedance of the drive speaker 4Ω or more) - Output Voltage Accuracy
- ±(3%+0.02 V)
- Sweep Frequency Range
- ±2 times of the allowance or manual setting
- Sensor Input
- 3.5VACrms
- Sensor Input Range
- Sensor Input range is set to any among 3 ranges (1 time, 5 times and 25 times) automatically.
- Sensor Locative-calls Voltage
- ±5 VDC
- Measuring Time
- Approx. 4s
- Measurement Accuracy
- ±(3%+1 Hz) at Q = 1.6 or more
- Measurement Result Output
- Serial number, Fo (measured value), Judgment (Go, Lo, Hi)
- Judgment Allowance Setup
- Centering Frequency 10 Hz～10000 Hz (0.1Hz step)
- Upper and Lower Limit Allowance Setup
- ±1 Hz～20000 Hz (0.1 Hz step)
- Output items
- Setting conditions (Product number, Lot, Measurement date, Temperature and relative humidity, Memorandum, Centering Fo, Upper and lower limit allowance), The number of measurement,
Average value, Maximum value, Minimum value, R (max.-min.), Standard deviation, Cp, Cpk, Histogram, The number and rate of “GO (pass)”, The number(Lo, Hi, Total) and rate of “NG (no pass)”
