Motor & Engine Tachometer
CT-6710
With a variety of sensors, even rotational speeds that were previously impossible to measure can now be measured.
The CT-6710 is a compact engine tachometer that can accept various sensor inputs.
Due to its compact size, it is effective not only for engine and EV/HEV motor bench tests, but also for measuring engine and EV/HEV motor rotation in actual vehicles.
Ten types of detectors are available, including ignition pulse detectors, gasoline and diesel engine rotation detectors, motor rotation detectors, and magnetic rotation detectors. ECU crank angle signals (unequal-interval pulses) can also be input. Furthermore, Accelerometer and ultra-compact Electromagnetic Detector have been added to the lineup of compatible sensors.
Even in cases where it is difficult to install a detector in an actual vehicle, engine rotational speed can be measured by inputting the crank angle signal for the ECU.
Please note: Depending on the type of engine and motor, measurement may not be possible or the measurement range may change. For engines and motors with no prior experience in use, please check with a demo unit. To request a demo unit, please contact your nearest sales office.
NP-3000 series Accelerometer
This piezoelectric vibration detection system detects vibrations caused by the up-and-down movement of the piston. Its high sensitivity and wide frequency range allow for rotational speed measurement even with very small vibrations. Please try it on diesel engines, which were previously difficult to measure.
MP-992 Ultra-compact Electromagnetic Detector
This device uses electromagnetic induction to detect leakage magnetic flux from the rotating shaft of the magnet in motors and magnet ignition engines. Its compact size, with a sensor head length of 13 mm, allows for installation in confined spaces. It enables stable motor rotation measurement with simple installation.
Trigger Assist Mode
The ignition signal contains electromagnetic induction and noise from the ignition of other cylinders. By turning on Trigger Assist mode, the system automatically adjusts to the optimal level for detecting only the ignition signal, allowing for stable measurement even when the engine speed is changed.
Trigger level tracking function
This function reduces the trigger level as the rotation speed increases. Use this function when the signal waveform becomes too small to detect as the rotation speed increases. (IP series exclusive function)
Reduces unwanted noise signals. Input frequency divider function.
When periodic noise with an amplitude close to the ignition signal is input, the system remains unstable even after adjusting the trigger level. By adding a frequency divider function, the signal is converted to a signal with a constant period, enabling stable measurement.
Separate analog rotation speed indicator (optional CT-0677)
This separate display unit (optional: CT-0677) is designed to meet the need to see the rotational speed behavior using an analog meter needle. No power supply connection is required for the display unit. Simply connect the analog signal cable (included as standard with the display unit) for easy use.
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Diverse output functions that capture transient phenomena with high-speed response
It captures transient phenomena in engine rotational speed with high-speed response.
The analog output follows acceleration and deceleration behavior with a conversion time of no more than one period of the input signal + 8 μs. The pulse output can be output without delay through waveform shaping. In addition, high-speed digital output is possible with the CAN output function (optional: CT-0671).
Measures engine rotation speed using the crank angle signal for the ECU (Optional CT-0672)
The crank pulse plate, which forms the basis of the crank angle signal, has extra or missing teeth, and the signal is not output at equal intervals, making it unsuitable for measuring engine rotational speed.
Therefore, by learning patterns with non-constant intervals, it becomes possible to perform measurements using crank angle signals. (Option: CT-0672)
Lightweight and compact size that won't take up your workspace.
170(W) × 49(H) × 120(D) mm Size
We pursued compactness and ease of operation that makes it easy to use not only on engine benches but also for measurements on actual vehicles.Pulse output function for tracking analysis
The DIRECT (for rotational synchronization signal) pulse output of the CT-6710 can be imported into our DS series for tracking analysis.
Peace of mind even when the engine is stopped: Deceleration condition measurement function
This function allows you to set stop conditions in case the detection pulse signal decreases rapidly due to an abrupt engine stop or similar event.
The prediction calculation stop time (ESTIMATE) is predicted from the last detected signal period and the analog output is reduced to stop. The hold time (KEEP) stops the analog output by setting it to 0V at a preset time.Engine status monitoring comparator output function
This function allows you to set the criteria for determining engine run and overrun.
When the engine speed exceeds the set value for engine run, it is determined that the engine has started. If it exceeds the set value for overrun, it is determined that there is an engine malfunction and a contact signal is output.For example, if you set the engine run speed to 500 r/min and the overrun speed to 6000 r/min, the operation will be as shown in the left diagram.
User-friendly visibility and operability
Its high visibility allows for easy function configuration via a menu-style interface.
By assigning direct keys, including rotary knobs, to frequently used sensor types, pulse counts, and trigger levels, settings can be configured quickly and efficiently.High-speed digital data CAN output function (optional: CT-0671)
Baud rate (kbps) 125, 250, 500, 1000 Update frequency (Hz) OFF, 1, 2, 5, 10, 20, 100, 1000 Rotation speed data is output via CAN communication.
The output update frequency is up to 1 kHz. Rotational speed data can be recorded using CAN communication-enabled devices such as CAN loggers.
| Input section | Compatible sensors/ Rotational speed measurement range |
IP-292/IP-296/IP-3000A/IP-3100, VP-202/VP-1220, NP-3000 series |
120 ～ 20,000 r/min |
|---|---|---|---|
| OM-1200/OM-1500, MP-992 *1 | 120 ～ 99,999 r/min | ||
| MP-900/MP-9000 series (electromagnetic type) | 30 ～ 99,999 r/min | ||
| MP-9810/MP-9830, LG-9200/LG-930 *1, EXT(PULSE) | 0 ～ 99,999 r/min | ||
| Crank angle signal for ECU (optional) | 120 ～ 20,000 r/min | ||
| Sensor power supply (R03-PB6M) | 12 V±10% 100 mA or less | ||
| CCLD power supply (BNC) | 18 V ± 1 V, 2.4 to 4.5 mA | ||
| Current is supplied coaxially to a constant-current driven sensor via an input connector (BNC). | |||
| Input frequency range | For EXT(PULSE) in the range of 0.1 Hz to 120 kHz | ||
| Display section | Display method | Fluorescent display tube | |
| Display size | 52.5 mm × 11.5 mm | ||
| Display items | Rotation speed (average value displayed) | ||
| Displayable range | 0 ～ 99,999 r/min | ||
| accuracy | Within ±0.01% FS (±1 count) | ||
| • The factor value should be 1.0000E+0. | |||
| Display status | SIG IND: Lights up each time an input signal is detected. | ||
| Number of display digits | Maximum 5 digits | ||
| Number of decimal places displayed | OFF / Select from 1 digits | ||
| Analog output | Number of output points | 1 (BNC connector) | |
| Output items | Rotation and Speed | ||
| Output range | 0 to 10 V | ||
| Range setting | 1 to 99,999 r/min (set in increments of 1 r/min) | ||
| 0.1 to 9,999.9 r/min (when decimal point display is set) | |||
| Load resistance | 100 kΩ or more | ||
| Responsiveness | Update within 8 μs after period determination. | ||
| Accuracy (linearity) | ±0.1% FS | ||
| Resolution | 16 bit | ||
| Pulse output | Number of output points | 1 (BNC connector) | |
| Output items (optional switching) | DIRECT (waveform shaping output), 0.5 / 1 / 60 [P/R] | ||
| signal level | 0-5V logic signal (Lo: 0.4V or less, Hi: 4.5V or more) | ||
| Load resistance | 100 kΩ or more | ||
| Comparator output | Output items (optional switching) | Engine run, overrun | |
| Output range | 1 ～ 99,999 r/min | ||
| 0.1 to 9,999.9 r/min (when decimal point display is set) | |||
| Contact capacity | DC30 V/0.1 A | ||
| Connector (terminal block) | Phoenix Contact MVSTBR2, 5/4-ST-5, 08 | ||
| RS-232C | Transfer speed | 9600 bps / 38400 bps | |
| Connector | ST60-18P(30) (Hirose Electric) | ||
| Dedicated cable | PS-D10758 (manufactured by Ono Sokki) | ||
| CAN (Option CT-0671) |
Output items | Rotation and Speed | |
| Baud rate | 125kbps / 250kbps / 500kbps / 1Mbps | ||
| Output update cycle | OFF / 1 Hz / 2 Hz / 5 Hz / 10 Hz / 20 Hz / 100 Hz / 1 kHz | ||
| Connector | D-SUB 9-pin (male) | ||
| Other features | moving average | 2 to 720 times | |
| Deceleration calculation | Selection method for time or period | Time: 1 to 1200 ms | |
| Period: ×1.5 / ×3 / ×5 / ×8 / ×16 | |||
| Pulse frequency division | 1 ～ 120 | ||
| Trigger Assist | Automatically set the trigger level until pulse detection. | ||
| Trigger level tracking | The trigger level can be varied according to the input frequency (a function exclusive to when an IP sensor is selected). | ||
| Resume function | Settings are remembered even when the power is off. | ||
| Condition Memory | Up to 5 types can be stored. | ||
| General specifications | Power supply | DC 9 to 28 V 1.35 A or less | |
| External dimensions/weight | 170 (W) x 49 (H) x 120 (D) mm / approx. 700 g
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| Operating temperature/humidity range | 0 to +50°C *2 5 to 85% RH (non-condensing) | ||
| Storage temperature/humidity range | -10 to +60 °C / 5 to 85% RH (non-condensing) | ||
| Applicable standards | CE marking | Low Voltage Directive: 2014/35/EU Standard EN 61010-1 | |
| EMC Directive: 2014/30/EU Standard EN 61326-1 Class 1 Industrial Environment | |||
| RoHS Directive: 2011/65/EU Standard EN IEC 63000 | |||
| FCC | 47 CFR 15 Subpart B Class A | ||
| Accessories | Includes: 4 rubber feet, AC adapter (100-240V), instruction manual | ||
| price | |||
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CT-0673
Panel mounting brackets
(CT-6710 not included) -
CT-0674
CT-6520 Replacement Panel Mounting Bracket
(CT-6710 not included) -
CT-0675
Protective handle
(CT-6710 not included) -
CT-0676
Light-blocking hood
(CT-6710 not included) -
CT-0677
Analog rotation speed indicator
