<< Yokogawa
Analog Panel Meters
Yokogawa
Stylist Series Panel Meters |
- Window-, surface- and rear-panel-mount
- 1-1/2", 2-1/2", 3-1/2" and 4-1/2" meter size
±2% accuracy of full scale
- Direct replacement for many competitive products
Available in UL/CSA
- Custom scaling available for all AC or DC products
- 90 or 95 degree scale deflection
- Optional bezels for surface-mount permit rear-panel
mounting
- Standard movement torque to weight ratio is approximately
4 times greater than most other high-torque versions
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Yokogawa Stylist Series
Panel Meters
Shown
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The Yokogawa stylist series panel meters are available in window mount
and surface mount styles and all meters meet ANSI specification C39.1.
These meters are available in a variety of sizes, from 1.5 to 4.5", and
feature a 90 degree arc in the AC iron vane version and a 95 degree
deflection in the taut band and pivot and jewel models. Both standard
and special units are available through the Yokogawa Just-in-time
manufacturing system or from 40 Instrument Sales and Service Centers
located throughout the United States and Canada. |
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Accuracy:
All DC and AC iron vane, ±2% of fullscale, AC rectifier type; ±3% of
fullscale (60 Hz sine wave). Expanded scale voltmeters ±5% of fullscale.
Special order DC with mirror back scale (DC only) 3-1/2 - 4-1/2”
Available @ ±1%.
ANSI Specification:
All meters meet ANSI Specifications C-39.1
Overload:
Voltmeters (AC + DC) - 50% momentary, 20% sustained. Ammeters (AC +DC)
momentary: 10 times the rated current for 10 consecutive intervals of .5
seconds with 1 minute interval between successive applications;
sustained: 20% for six hours.
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Scale Data |
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ARC |
90° |
95° |
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Meter Size |
AC Iron Vane |
Taut Band/ Pivot & Jewel |
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1 1/2" |
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1.66" |
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2 1/2" |
2.15" |
2.29" |
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3 1/2" |
2.70" |
2.85" |
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4 1/2" |
3.80" |
4.01" |
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Insulation Level |
2600V/1 min. (2-1/2” - 4-1/2”); 1500V/1 min. (1-1/2”) |
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Response Time |
3 seconds (Max.) - Microammeters
2 seconds (Max.) - All other DC ratings
2.5 seconds (Max.) - All AC ratings
Maximum 40% overshoot |
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Burden Data |
AC Ammeter 5 amps @ 60 Hz, 0.5VA, Max. .5 Power
factor lagging, AC voltmeter - unity power factor. |
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Three Mounting Types Available in Stylist Series:
Rear Panel Window Mount, Front of Panel Surface Mount, Rear Panel
Surface Mount Available with Optional Bezel
Taut Band:
Taut band is a means of suspending the moving mechanism between two
ribbons of metal, obviating the need for pivots, jewels and control
springs found in conventional mechanisms. The absence of friction
resulting from this permits greater sensitivities and provides more
rugged meters. Common failures of conventional meters subjected to shock
testing are cracked jewels and/or blunted pivots. Taut band, without
pivot and jewels, consequently, will withstand shock in excess of that
specified for pivot and jewel meters. For example, ANSI Specifications
for panel meters require 50G shock. Taut-band meters will withstand 100G
shock.
Pivot and Jewel:
In this design the coil and pointer are supported by polished steel
pivots at each end which fit into jewel bearings. Pivot and jewel meters
are recommended for high vibration environments because of the
mechanism’s inherent stability and strength. Accuracy and repeatability
are almost equal to the taut-band’s, and good performance from the pivot
and jewel construction is the reason for its long popularity. Don’t
specify pivot and jewel meters for applications that involve high shock,
but do take advantage of this meter’s ability to withstand vibration.
High-Sensitivity DC Voltmeters:
Standard DC voltmeter sensitivity is 1000 ohms/volt. Expressed
differently, 1000 ohms/volt sensitivity means that the meter draws
approximately one milliamp full-scale current.
Occasionally lower current drains are necessary, hence higher
sensitivities may be required. The table below compares available
sensitivities, maximum self-contained voltages, and approximate
full-scale currents. The voltage range could be extended by using
external resistors.
Expanded-Scale Voltmeters:
For very close monitoring of voltages, Zener diode expanded scale
voltmeters are available in 3-1/2- and 4-1/2-inch sizes for AC and DC
ratings. Accuracy is ±0.5% of full-scale value. Standard voltage spans
are listed in “Ratings.”
Expanded scale voltmeters can be furnished for any mid-span values from
12 to 300 volts. Minimum span is 16% of mid-span value.
Frequency Effect — AC Meters:
Iron vane voltmeters are sensitive to frequency and should not be
used on frequencies other than design frequency. (Standard voltmeters
are calibrated at 60 Hertz. Used at 50 Hertz, accuracy becomes ±2-1/4%.
There are also 150- and 300-volt ratings listed which are calibrated at
400 Hertz). For calibrations at frequencies other than 60 and 400 Hertz,
refer to factory.
All Iron-vane ammeters (which produce a conventional scale distribution
with divisions crowded in lower third of scale) from 10 milliamperes to
50 amperes are virtually unaffected by a change in frequency; e.g., a
stock ammeter (calibrated at 60 Hertz) when used at 400 Hertz incurs an
additional error of only .5 percent full-scale. If used on 1000 Hertz,
the additional error is 4 percent. We recommend use of stock (60 Hertz)
ammeters on any frequency in the range of 25 Hertz to 400 Hertz. For
calibration at frequencies outside the 25-Hertz to 400-Hertz range,
refer to factory or use a rectifier-type AC ammeter.
Rectifier-Type Meters:
Rectifier-type meters differ from iron-vane mechanisms in that:
They provide a nominally linear (DC) scale rather than conventional
iron-vane distribution which has a slight crowding at low end of scale.
- AC current measurements of microamperes and milliamperes at
minimum power consumption are permitted.
AC voltmeters of higher sensitivity (ohms/volt) than iron-vane types
can be made.
- Frequency response of rectifier type meters is essentially flat from
20 to 1,000 Hertz (1% effect from reference to 60 Hertz). Rectifier-type
meters employ a full-wave rectifier and are available in ratings of
500µA to 30A.
- Suppressed-Zero DC Meters: DC meters can be mechanically suppressed
up to 20% of end-scale value. However, additional errors are introduced
by suppressions (e.g. errors at 20% suppression = ±3% of end-scale).
Many process transmitters in use today provide a 4-20mA signal
(occasionally 10-50mA or 1-5mA) and require a suppressed-zero meter with
operating zero set. These are known as “live-zero” and are standard.
- Higher Accuracy: Standard calibration accuracy is ±2% of full scale.
DC meters can be calibrated to ±1% of full scale as a special model in
3-1/2” and 4-1/2” with mirrored scale.
Suppressed-Zero DC Meters:
DC meters can be mechanically suppressed up to 20% of end-scale
value. However, additional errors are introduced by suppressions (e.g.
errors at 20% suppression = ±3% of end-scale). Many process transmitters
in use today provide a 4-20mA signal (occasionally 10-50mA or 1-5mA) and
require a suppressed-zero meter with operating zero set. These are known
as “live-zero” and are standard.
Higher Accuracy:
Standard calibration accuracy is ±2% of full scale. DC meters can be
calibrated to ±1% of full scale as a special model in 3-1/2” and 4-1/2”
with mirrored scale. |
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Stylist Series Panel Meters - General Specifications |
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Accuracy |
AC/DC Iron-Vane |
±2% of full-scale |
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AC Rectifier Types |
±3% of Full scale (60Hz sine wave) |
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Expanded Voltmeters |
±5% of full-scale |
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Special Order with mirror back scale (DC only)
3-1/2 - 4-1/2” |
Available @ ±1%. |
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Overload |
Voltmeters (AC/DC) |
50% Momentary |
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20% Sustained |
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Ammeters (AC/DC) |
Momentary |
10 times the rated current for 10 consecutive
intervals of .5 second with a 1 minute interval between successive
applications |
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Sustained |
20% for six hours |
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ANSI Specification |
Majority of meters meet ANSI Specifications C-39.1
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Insulation Level |
1 1/2" |
1500 Vrms Hi-pot |
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All Meters (other then 1 1/2") |
2600 Vrms Hi-pot |
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Burden Data |
AC Ammeter |
5 amps, 0.5 va, Max. 0.5 power-factor lagging @ 60 Hz. |
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AC Voltmeter |
unity power factor |
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Additional Notes |
Severe-duty meters are available to
meet CSA or UL 1437 requirements in 2-1/2” - 4-1/2” sizes. |
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Stylist Series Panel Meters - Model Types |
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Specifications |
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Voltmeters |
DC |
Zero - Left |
More Info
And Ordering Information>> |
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Zero-Center |
More Info
And Ordering Information>> |
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Expanded Scale |
More Info
And Ordering Information>> |
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Percent Deviation ±.05% Full Scale Accuracy |
More Info
And Ordering Information>> |
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AC |
Expanded Scale |
Taut Band, Moving Coil |
More Info
And Ordering Information>> |
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Self-Contained |
More Info
And Ordering Information>> |
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Transformer Rated |
More Info
And Ordering Information>> |
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Self-Contained |
Iron Vane, Pivot & jewel |
More Info
And Ordering Information>> |
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Transformer Rated |
More Info
And Ordering Information>> |
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Ammeters |
DC |
Zero - Left |
Self-Contained |
More Info
And Ordering Information>> |
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50mV |
Zero-Left, Shunt Rated |
More Info
And Ordering Information>> |
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100mV |
More Info
And Ordering Information>> |
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Zero-Center, Self Contained |
More Info
And Ordering Information>> |
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50mV |
Zero-Center, Shunt Rated |
More Info
And Ordering Information>> |
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AC |
Taut Band, Moving Coil |
Self-Contained, Rectifier Type |
More Info
And Ordering Information>> |
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Separate Transformer, Rectifier Type |
More
Info And Ordering Information>> |
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Transformer Rated, Rectifier Type |
More Info
And Ordering Information>> |
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Iron Vane, Pivot & Jewel, |
Self-Contained |
More Info
And Ordering Information>> |
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Transformer Rated |
More Info
And Ordering Information>> |
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Millivoltmeters |
DC |
Zero - Left |
More Info
And Ordering Information>> |
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Zero-Center |
More Info
And Ordering Information>> |
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Microammeters |
DC |
Zero-left |
More Info
And Ordering Information>> |
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Zero-Center |
More Info
And Ordering Information>> |
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Milliammeters |
DC |
Zero-left |
More Info
And Ordering Information>> |
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Zero-Center |
More Info
And Ordering Information>> |
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Suppressed Zero |
More Info
And Ordering Information>> |
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AC |
Taut Band, Moving Coil |
Self-Contained |
More Info
And Ordering Information>> |
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Iron Vane, Pivot & Jewel, Moving Coil |
Self-Contained |
More Info
And Ordering Information>> |
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800-517-8431