Expanded Scale Analog Panel Meters
Description
Expanded Scale Analog Panel Meters are devices used to measure and display electrical parameters such as voltage, current, or resistance. These meters feature an analog display with a needle that moves across a calibrated scale, providing a visual representation of the measured value. The expanded scale design allows for more precise readings over a specific range, enhancing the resolution and accuracy of the measurement within that range.
Working Principle
Expanded Scale Analog Panel Meters operate by using a moving coil mechanism, where the current flowing through the coil generates a magnetic field. This field interacts with a permanent magnet, causing the coil—and thus the attached needle—to move across the scale. The expanded scale is achieved by modifying the coil or the scale to provide finer graduations over a specific range, allowing for more detailed readings. These meters are particularly useful for applications requiring precise monitoring of small changes in electrical parameters, as they provide a clear visual indication of trends and magnitude without the need for a power supply beyond the test current source .
Applications
Expanded Scale Analog Panel Meters are commonly used in niche applications where precise monitoring of electrical parameters is crucial. For example, they are often employed in battery indicators for marine or naval craft, where accurate voltage readings are essential for maintaining battery health and ensuring reliable operation .
Advantages over other Inspection - Electrical and Electronic Test Equipment
One of the main advantages of Expanded Scale Analog Panel Meters over digital meters is their ability to provide a better sense of trends and order of magnitude through the analog needle movement. This can be particularly beneficial in applications where observing changes over time is more important than obtaining an exact numerical value . Additionally, these meters do not require an external power supply, which can simplify their integration into various systems .
Limitations
Expanded Scale Analog Panel Meters have several limitations. They are susceptible to parallax error, which occurs when the meter is not viewed at the correct angle, potentially compromising accuracy . Additionally, they lack auto-polarity technology, meaning that incorrect connection of test leads can result in needle deflection and potential damage to the device . The presence of multiple scales can also cause confusion during readings .
Considerations
When considering the use of Expanded Scale Analog Panel Meters, it is important to evaluate factors such as initial costs, operating expenses, and maintenance requirements. These meters are generally durable and do not require a power supply, which can reduce operating expenses. However, their accuracy can be affected by parallax error, and they may require periodic calibration to maintain precision. Replacement and maintenance costs should also be considered, particularly if the device is used in environments where it is prone to damage or wear.
from Sifam
The Presentor Audio Level range of analogue panel meters complements the proven and popular Industrial and Fast Response series. The range is available in three sizes each in four styles and offers a performance not significantly different from full specification vu meters to meet today ’s... [See More]
- Scale Type: Expanded Scale
- Face Type: Rectangular
- Scale Length: 1.81
- Meter Mechanism: Taut Band
from Hoyt Electrical Instrument Works, Inc.
The new LOOK of the Hoyt Series is BOLD!! We have added a new scale for the A250 Series which includes both fahrenheit and degrees celsius scales. [See More]
- Scale Type: Expanded Scale
- Analog Input Channels: 1
- Face Type: Round Front Face
from Sifam
The Presentor Audio Level range of analogue panel meters complements the proven and popular Industrial and Fast Response series. The range is available in three sizes each in four styles and offers a performance not significantly different from full specification vu meters to meet today ’s... [See More]
- Scale Type: Expanded Scale
- Face Type: Rectangular
- Scale Length: 1.73
- Meter Mechanism: Taut Band
from Hoyt Electrical Instrument Works, Inc.
Four Stud mounting, Black ABS case, white scale plate black knife type pointer and PC Cover. Available in multiple scales and inputs this meter is a low cost solution to your metering needs! [See More]
- Scale Type: Zero-Left; Expanded Scale
- Frequency Range: 45 to 65
- Face Type: Rectangular
- Input Type: AC Voltage; DC Voltage; AC Current; DC Current; Frequency
from Sifam
The Presentor Audio Level range of analogue panel meters complements the proven and popular Industrial and Fast Response series. The range is available in three sizes each in four styles and offers a performance not significantly different from full specification vu meters to meet today ’s... [See More]
- Scale Type: Expanded Scale
- Face Type: Rectangular
- Scale Length: 1.67
- Meter Mechanism: Taut Band
from Hoyt Electrical Instrument Works, Inc.
Hoyt edgewise meters have high visibility scales and straight forward design that make them especially suited to small, limited space, rack mounted power supplies and allied equipment. Supplied bezel and mounting hardware enable quick, trouble-free installation. [See More]
- Scale Type: Expanded Scale
- Analog Input Channels: 1
- Face Type: Rectangular
- Width: 19.05
from Sifam
The Presentor Audio Level range of analogue panel meters complements the proven and popular Industrial and Fast Response series. The range is available in three sizes each in four styles and offers a performance not significantly different from full specification vu meters to meet today ’s... [See More]
- Scale Type: Expanded Scale
- Face Type: Rectangular
- Scale Length: 1.85
- Meter Mechanism: Taut Band
from Hoyt Electrical Instrument Works, Inc.
The Pyrometer Kiln thermometer is a low cost, high temperature measurement system for use in a wide range of kiln and furnace applications. 2250 °F/1240 °C, 1-1/2" Type K [See More]
- Scale Type: Expanded Scale
- Analog Input Channels: 1
- Face Type: Rectangular
- Input Type: AC Voltage; DC Voltage; AC Current; DC Current
from Sifam
The Presentor Audio Level range of analogue panel meters complements the proven and popular Industrial and Fast Response series. The range is available in three sizes each in four styles and offers a performance not significantly different from full specification vu meters to meet today ’s... [See More]
- Scale Type: Expanded Scale
- Face Type: Rectangular
- Scale Length: 3.13
- Meter Mechanism: Taut Band
from Hoyt Electrical Instrument Works, Inc.
The VU meter has become the universal standard level indicator for practically all audio frequency transmission systems. VU meters are for the measurement of sound or noise levels - including broadcast monitoring, use with public address of communication systems, and in all instances where volume... [See More]
- Scale Type: Expanded Scale
- Analog Input Channels: 1
- Face Type: Rectangular
- Width: 57.4
from Sifam
The Presentor Audio Level range of analogue panel meters complements the proven and popular Industrial and Fast Response series. The range is available in three sizes each in four styles and offers a performance not significantly different from full specification vu meters to meet today ’s... [See More]
- Scale Type: Expanded Scale
- Face Type: Rectangular
- Scale Length: 3
- Meter Mechanism: Taut Band
from Sifam
The Presentor Audio Level range of analogue panel meters complements the proven and popular Industrial and Fast Response series. The range is available in three sizes each in four styles and offers a performance not significantly different from full specification vu meters to meet today ’s... [See More]
- Scale Type: Expanded Scale
- Face Type: Rectangular
- Scale Length: 2.9
- Meter Mechanism: Taut Band
from Sifam
The Presentor Audio Level range of analogue panel meters complements the proven and popular Industrial and Fast Response series. The range is available in three sizes each in four styles and offers a performance not significantly different from full specification vu meters to meet today ’s... [See More]
- Scale Type: Expanded Scale
- Face Type: Rectangular
- Scale Length: 3.26
- Meter Mechanism: Taut Band
from Sifam
The Presentor Audio Level range of analogue panel meters complements the proven and popular Industrial and Fast Response series. The range is available in three sizes each in four styles and offers a performance not significantly different from full specification vu meters to meet today ’s... [See More]
- Scale Type: Expanded Scale
- Face Type: Rectangular
- Scale Length: 3.84
- Meter Mechanism: Taut Band
from Sifam
The Presentor Audio Level range of analogue panel meters complements the proven and popular Industrial and Fast Response series. The range is available in three sizes each in four styles and offers a performance not significantly different from full specification vu meters to meet today ’s... [See More]
- Scale Type: Expanded Scale
- Face Type: Rectangular
- Scale Length: 3.7
- Meter Mechanism: Taut Band
from Sifam
The Presentor Audio Level range of analogue panel meters complements the proven and popular Industrial and Fast Response series. The range is available in three sizes each in four styles and offers a performance not significantly different from full specification vu meters to meet today ’s... [See More]
- Scale Type: Expanded Scale
- Face Type: Rectangular
- Scale Length: 3.6
- Meter Mechanism: Taut Band
from Sifam
The Vintage style meter was introduced by Sifam in response to the demand for the more classically styled meter seen on many traditional consoles and rack mounted units. The distinctive ‘retro ’ styling with contemporary construction gives high performance at an affordable price. The... [See More]
- Scale Type: Expanded Scale
- Meter Mechanism: Taut Band
- Face Type: Rectangular
- Voltage Range: -20 to 4