Tachometer / Ratiometer
Multi-function Digital Tachometer / Ratiometer
MODEL 4961
- ■ Compatible with various sensors and high frequency 100 kHz signal.
- ■ Available with teaching function for auto-scale of measured value.
Standard Specifications
Model Designation
| 4961 | □ | □ | - | □ | - | □ |
| ① | ② | ③ | ④ |
①Input
| Code | Input Type |
|---|---|
| X | Open collector, No-voltage contact, Voltage pulse, Magnetic sensor |
| F | Differential input (for only AC-powered product) |
②Power Supply
| Code | Power Supply Voltage |
|---|---|
| A | AC 85 to 264 V |
| D | DC 10.8 to 25.2 V |
③Option1
| Code | Optional Output / Input |
|---|---|
| (blank) | --- |
| FVT | Analog output |
| CPT | Relay output |
| TRT | Transistor output |
| RMT | Ratiometer (External standard input) |
| DRT | Ratiometer (External differential input) |
④Option2
| Code | Optional Output |
|---|---|
| (blank) | --- |
| FVC | Analog output |
| BCD | BCD output |
General Specifications
■Tachometers
| Model | 4961□□ | |||
|---|---|---|---|---|
| Action Mode | Tachometer | Flowmeter | Elapsed time counter | Time width meter |
| Display 1 | 0 to 999999 | 0:00:00 to 9:59:59 | 0:00:00 to 0:59:59 | |
| 6 digits | (hr:min:sec, sexagesimal) | |||
| Display 2 | --- | 0:00 to 999:99 (sec: 1/100 sec, decimal) | ||
| Zero suppress function | ||||
| Decimal point position | 10-1 to 10-5 | --- | ||
| Number indicator | Red 7 segments LED, Character height: 22 mm, 6 digits | |||
| LED lamp | 8 lamps (SIG, LL, L, H, HH, MAX, MIN, TEA) | |||
| Operation keys | 5 keys (SET/SHIFT, MEM/TEACH, UP/PARA, RIGHT/FUNC, ENT/MODE) | |||
| Input range | 0.0067 Hz to 100 kHz | 10 ms to 3600 s | ||
| Accuracy | ± 0.008% ± 1 digit | ± 0.1% ± 1 digit | ||
| Filter | Switches 100 kHz / 30 kHz / 10 kHz / 0.02 kHz using the paarameter. Note: only 10 kHz and 0.02 kHz for magnetic sensor, only 0.02 kHz for no-voltage contact input |
|||
| Display cycle | 0.2, 0.5, 1, 2, 5, 10, 15, 30, 60 sec. | Depends on input signals | ||
| Pre-scale function | Parameter setting system using the front panel keys. The teaching of display values is also available. | |||
| Memory function | The max / min measured values can be memorized and displayed in hte indicator. (Switch the display using the MEM key) |
|||
| Comparator function | The settings of the high set point 1, low set point 1, high set point 2 and low set point 2, and the judgement results can be displayed by the LED lamp. The hysteresis setting of the high / low set point 1 values is also available. |
|||
| Auto zero time | 0.1 to 150 sec. | 0.1 to 3600 sec. | ||
| Predictive calculation function | Updates the displayed value according to the elapsed time after the pulse stops. | |||
| Power supply | 4961□A: AC 85 to 264 V, 4961XD: DC 10.8 to 25.2 V | |||
| Input signal | 4961□A: Open collector, No-voltage contact, Voltage pulse, Magnetic sensor, 4961XD: Differential singals |
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■Ratiometers
| Model | 4961XA-RMT / 4961FA-DRT | |||||
|---|---|---|---|---|---|---|
| Action Mode | Error ratio | Simple ratio | Concentrarion ratio | Rotational speed difference | Passing speed | Temporal difference |
| Display1 | -99999 to 99999 | 0 to 99999 | -99999 to 99999 | 0 to 99999 | 0:00:00 to 0:59:59 | |
| Display2 | ± 5 digits | 5 digits | ± 5 digits | 5 digits | (hr:min:sec, sexagesimal) | |
| Zero suppress function | ||||||
| Decimal point position | 10-1 to 10-5 | --- | ||||
| Number indicator | Red 7 segments LED, Character height: 22 mm, 6 digits, '-' display available. | |||||
| LED lamp | 8 lamps (SIG, LL, L, H, HH, MAX, MIN, TEA) | |||||
| Operation keys | 5 keys (SET/SHIFT, MEM/TEACH, UP/PARA, RIGHT/FUNC, ENT/MODE) | |||||
| Input range | 0.0067 Hz to 100 kHz | 10 ms to 3600 s | ||||
| Accuracy | ± 0.1% | |||||
| Filter | Switches 100 kHz / 30 kHz / 10 kHz / 0.02 kHz using the parameter for each input A and B. Note: only 10 kHz and 0.02 kHz for magnetic sensor, only 0.02 kHz for no-voltage contact input |
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| Display cycle | 0.2, 0.5, 1, 2, 5, 10, 10, 15, 30, 60 sec. (changeable by the parameter settings) | |||||
| Pre-scale function | Prameter setting system using the front panel keys. The teaching of display values is also available. |
--- | ||||
| Memory function | The max / min measured values can be memorized and displayed in the indicator. (Switch the display using the MEM key) |
|||||
| Comparator funtion | The settings of the high set point 1, low set point 1, high set point 2 and low set point 2, and the judgement results can be displayed by the LED lamp. The hysteresis setting of the high / low set point 1 values is also available. |
|||||
| Auto zero time | 0.1 to 150 sec. | 0.1 to 3600 sec. | ||||
| Predictive calculation function | Updates the displayed value according to hte elapsed time after the pulse stops. | |||||
| Power supply | AC 85 to 264 V | |||||
| Input singal | 2 inputs of input(A) and input(B). 4961XA-RMT: Open collector, No-voltage contact, Voltage pulse and Magnetic sensor, 4961FA-DRT: Differential signals |
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Common Specifications
| Insulation resistance | More than 10 MΩ (at DC 500 V Mega) |
| Withstand voltage | More than AC 1500 V, 1min. |
| Operating temperature | 0 to 45℃ (During no condensation situation) |
| Operating humidity | 35 to 85% RH (During no condensation situation) |
| Operating atmosphere | No corrosive gas |
| Applicable standard | RoHS |
| Protection level | Front panel: IP66 (or equivalent), Rear terminal block: IP20 |
| Casing material | ABS resin |
| External dimensions | W96 × H48 × D92 mm (DIN) |
| Weight | 4961□A-□: approsx. 200 g, 4961□□: approx. 200 g, 50 g to 100 g / option |
| Terminal block | M3, IP20 |
| Accessories | Mounting adapter, Unit sticker, Waterproof packing |
