Knobs / Switches Tachometers
Description
Knobs/Switches Tachometers are devices used to measure the rotational speed of a shaft or disk. They provide a readout of the speed in revolutions per minute (RPM), allowing users to monitor and control the speed of various mechanical systems.
Working Principle
Knobs/Switches Tachometers operate by detecting the rotational speed of a component through various sensor technologies. These can include contact-type sensors, which physically touch the rotating part, or non-contact sensors like photoelectric, inductive, or Hall effect sensors. Photoelectric sensors use light beams to measure speed, while inductive sensors use magnetic fields, and Hall effect sensors detect changes in magnetic fields. These technologies convert the rotational speed into an electrical signal that can be displayed as RPM. The usefulness of these tachometers lies in their ability to provide real-time speed measurements, which are crucial for maintaining the efficiency and safety of mechanical systems.
Applications
Knobs/Switches Tachometers are commonly used in various industrial and mechanical applications. They are essential in measuring the speed of engines and motors, as well as the speed of powered equipment such as conveyors, mixers, fans, and machine tools. In control systems, they serve as feedback components in speed control circuits, ensuring that machinery operates within desired speed parameters.
Advantages over other Tachometers
One advantage of Knobs/Switches Tachometers is their ability to provide directional indication, which is particularly useful in applications where the direction of rotation is as important as the speed. This feature is beneficial in control or measurement applications that require precise monitoring of both speed and direction.
Limitations
A limitation of Knobs/Switches Tachometers is that they may require physical contact with the rotating component, which can lead to wear and tear over time. Additionally, non-contact versions may be more expensive and require specific environmental conditions to function accurately, such as clean and unobstructed paths for light beams in photoelectric sensors.
Considerations
When selecting Knobs/Switches Tachometers, it is important to consider factors such as initial costs, operating expenses, and maintenance requirements. Contact-type tachometers may have lower initial costs but could incur higher maintenance costs due to wear. Non-contact tachometers, while potentially more expensive initially, may offer longer durability and lower maintenance needs. Accuracy is another critical consideration, as it can vary based on the sensor technology used. Replacement and maintenance costs should also be evaluated to ensure long-term cost-effectiveness and reliability of the tachometer in its intended application.
from HydraCheck Inc.
The DT-207LR tachometer incorporates laser technology yet retains Shimpo ’s hallmark rugged construction and reliable quality components; the unit offers incredible value and versatility as it performs non-contact and contact applications via the included contact adapter. We ’re... [See More]
- Interface / Control: Analog Front Panel
- Accuracy: 0.0060
- Operating Speed: 6 to 99999
- Tachometer Type: Instrument / Sensor Package
from Global Digital Instruments LLC
The SenDEC Motortach performs Tachometer, Hour meter, and Flash Alert functions on ANY rotating shaft, rotating gear, or pulley. The MotorTACH does NOT require any external power and can be used on Diesel engines, Compressors, Heating motors, Process equipment, Power equipment, Generators, or a host... [See More]
- Interface / Control: Analog Front Panel
- Accuracy: 10
- Operating Speed: 3000 to 6000
- Tachometer Type: Instrument / Sensor Package
from Fluidwell bv
The F093 is a local indicator to monitor the tachometer engine speed with running hours simultaneously. The running hours can be reset to zero by pressing the CLEAR button twice. The eleven digit accumulated running hours however can not be reset to zero. Advantages. Robust IP66, IP67 (NEMA4X) field... [See More]
- Interface / Control: Analog Front Panel; Digital Front Panel
- Form Factor: Panel; Field Mount / Stand Alone
- Tachometer Type: Indicator Only
- Display Type: Digital Numerical Display
from Trumeter Company, Inc.
The 4HT600 has eight measuring ranges and three modes. Mode change is effected by pressing the MODE button. The instrument can be operated in optical or direct contact modes (using adaptor supplied). The power turns off automatically 30 seconds after the last operation to conserve the batteries. [See More]
- Interface / Control: Analog Front Panel; Digital Front Panel
- Accuracy: 0.0200
- Operating Speed: 1 to 99999
- Tachometer Type: Instrument / Sensor Package
from Monarch Instrument
Smart Laser Sensor is an internal battery-powered optical sensor utilizing a visible Class 3R Laser for a TTL pulse output. Operating range up to 65 feet with reflective tape and up to 3 feet* (1 m) off contrasting color targets, key-ways, bolt heads or blades. Features. "Smart" auto gain provides... [See More]
- Interface / Control: Analog Front Panel
- Tachometer Type: Instrument / Sensor Package
- Operating Speed: 1 to 500000
- Sensor Technology: Non Contact (Photoelectric (Optical, Infrared))
from REED-Direct
Exclusive one-chip micro-computer LSI circuit and quartz crystal control time-base assures accuracy of ±1%. 4-digit, 0.3" high LED display. Duty cycles from 5 to 30 minutes (depending on RPM range). Tripod mountable AC operated with 6-foot power cord. SPECIFICATIONS: Flash Range: 100 to... [See More]
- Interface / Control: Analog Front Panel
- Tachometer Type: Instrument / Sensor Package
- Operating Speed: 100 to 100000
- Sensor Technology: Non Contact (Stroboscope)
from Global Digital Instruments LLC
STS-5000 – Tachometer only that accurately displays up to 20,000 RPMs. Features programmable firing pattern for 1:1, 2:1, or 1:2 firing patterns. Max RPM recall stores the highest RPM registered until cleared by the user. Works on 1 and 2 cylinder applications. FS-500 – All the features... [See More]
- Interface / Control: Analog Front Panel
- Tachometer Type: Instrument / Sensor Package
- Operating Speed: 20000
- Sensor Technology: Contact Type (Roller)
from REED-Direct
Provides Total measurements. Built-in memory recalls maximum, minimum values as well as last value stored. Highly visible 5-digit LCD with backlight. Includes reflective tape, soft carrying case and batteries. SPECIFICATIONS: Measruing Range: 2 to 99,999 rpm. Accuracy: ±(0.05% rdg. + 1 dgt.). [See More]
- Interface / Control: Analog Front Panel
- Tachometer Type: Instrument / Sensor Package
- Operating Speed: 2 to 99999
- Sensor Technology: Non Contact (Photoelectric (Optical, Infrared))