Jewell Instruments manufactures and markets a wide range of Jewell brand flag mechanisms. We engineer them to meet your specifications. We have a variety of designs available — below is a selection of our most popular flag mechanisms. Each model is uniquely designed to meet some of our customers’ most frequent requirements.
The moving coil panel meters, DSL 48/72/96/144 are housed in molded polycarbonate cases are suitable for the measurement of DC currents and voltages. These instruments offer several advantages in switchboards and generating set panels. A number of meters can be mounted in a panel cut out (mosaic mounting). The front glass, bezel, and dial can be easily replaced.
Edgewise meters mount vertically or horizontally with a curved (13) or flat (13F) front. 5% Accuracy meters incorporate a moving magnet mechanism. Available size 2″.
Series 802 are very small, low-cost, uncalibrated devices for indicating on-off conditions or voltage transition points. They are rugged, dependable, and require less than 2mW to move the flag or pointer. The two types are:
Flag Type (802F)Â – A white flag moves from one end of the red & white scale to the other when a predetermined voltage value is exceeded. Provides on-off indication.
Pointer Type (802P) – A pointer moves across the scale to indicate circuit condition. The pointer may be factory set for left, right, or exact center position to indicate zero current. The center point can be specified for a given voltage (±5%) within the range of the device.
Either type can be made to operate with a Zener diode to indicate voltage changes as low as 1 volt.
.5E Thermoplastic front and steel back. Horizontal mounting. Available size less than .5″.
The S Series Surface Mount Panel Meters are clean-cut meters with straightforward design and pleasing aspect ratio are leaders of the Modutec line and add distinction to any instrument or control panel. Available in five sizes and a wide variety of types and ranges, they resolve many problems for the equipment designer and are always a solid choice for function and appearance.
AC Meters in this series are available in both moving coil (rectifier type) and iron vane versions. The latter has the virtue of being relatively insensitive to input distortion, while the rectifier type is less affected by frequency variations.
The A&M Model 4951 power factor meters are designed to meet the requirements of MIL-M-19261 and MIL-M-16034. They are supplied as either self-contained or as a “matched-set” with the external transducer. In the external transducer configuration, the transducer is matched to the meter. Both configurations are sealed watertight.
Jewell Instruments has been one of the leading manufacturers in the world for Meter Movements of all types for over 60 years. We have supplied our products to the Army, Navy, Air Force, Coast Guard, and Marine Corps as well as a wide array of military and aerospace customers. Jewell Instruments manufactures a variety of custom assemblies and special instruments combining Jewell Mechanisms and Jewell or customer furnished housings.
The moving iron panel meters, DE 48/72/96/144 housed in cases made of molded polycarbonate are suitable for the measurement of AC currents for the frequency range of 15 to 400 Hz and voltages in the frequency range of 15 to 100Hz. Moving iron meters indicate RMS values practically independent of waveform even of high harmonics. An error of indication may occur for extreme waveforms (e.g. phase gating controls) & for frequencies above 100KHz.
These meters offer several advantages in switchboards and generating set panels. A number of meters can be mounted in a panel cutout mosaic mounting. For CT-operated ammeters, dials can be fitted based on CT ratio. Glass and bezel can easily be replaced.
Edgewise compact indicator is frequently used to indicate go/no-go circuit condition or as a miniature null type zero-center tuning indicator to indicate balance in position. 5% Accuracy meters incorporate a moving magnet mechanism. Available size 1.375″.
The Jewell window mount 80 series analog panel meter is designed with a crisp appearance and high visibility. Only the clean lines of the dial face appear on your panel front, providing maximum layout flexibility. This unique space-saving meter saves up to 3 cubic inches behind the panel when compared to “barrel type” meters.
The MODUTEC BL Digital panel meter gives you all the functionality you need with none of the extras you don’t need. That means simplicity, easy readability, a small footprint, and a low cost.
The Jewell surface mounted MS Series analog panel meter is designed with a contemporary concave cover to reduce glare and improve readability. Rugged and durable, this aesthetically pleasing rectangular shape interfaces with today’s high technology applications.
Available in sizes 1.5″ up to 3.5″.
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