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Yokogawa 251/255 Horizon Line Panel Meters

Horizon Line Panel Meters

These meters possess the same precision qualities as New Big Look. In addition, Horizon Line panel meters can be front or rear mounted on panel.

• Extra-wide scales
• Big bold numerals above the scale
• Divisions for unobstructed reading
• Tapered needle-sharp pointers
• Shadow-free acrylic covers help pinpoint values
• Available in taut band and pivot and jewel types.
• Gasket sealer gives New Big Look dust and moisture resistant design. (Except 1-1/2”).

Select a link under the "item" tab below to order.

Table 1Table 2Table 3Table 4
Table 1Size
Table 2Elec. and Mechanical Variables
00DC Amps Zero-Left
01DC Amps Zero-Center
04DC Volts/Ext. Res. Zero-Left
05DC Volts/Ext. Res. Zero-Center
10AC Amps Rectified
20DC Volts Zero-Left
21DC Volts Zero-Center
24DC Millivolts Zero-Left
25DC Millivolts Zero-Center
30AC Volts Rectified
37AC Expanded Scale Voltmeter
38DC Expanded Scale Voltmeter
40AC Amps (I/V)* 60 Hz
44AC Volts (I//V)* 60 Hz
45AC Volts 400 Hz (I/V)*
Table 3Elec. Rating
LS5 Amps
MT10 Amps
NG20 Amps
Table 4Scale
LS0-5 Amps
MT0-10 Amps
NG0-20 Amps
Accuracy AC/DC Iron-Vane ±2% of full-scale
AC Rectifier Types ±3% of Full scale (with 60Hz sine wave at 25°C)
When standard 60 Hz iron vane ammeters are used at the extreme limits of 20 or 400 Hz, additional error (approx. .75%) may be experienced.
Expanded Voltmeters ±0.5% of full-scale
Overload Voltmeters (AC/DC) 50% Momentary
20% Sustained
Ammeters (AC/DC) Momentary 10 times the rated current for 10 consecutive intervals of .5 second with a 1 minute interval between successive applications
Sustained 20% for six hours
Scale Data 90 degree rotation
Scale Length 1 1/2" 1.50"
2 1/2" 2.06"
3 1/2" 2.88"
4 1/2" 3.93"
Insulation Level 1 1/2" 1500 Vrms Hi-pot
All Meters (other then 1 1/2") 2600 Vrms Hi-pot
Burden Data AC Ammeter 5 amps, 0.5 va, Max. 0.5 power-factor lagging @ 60 Hz.
AC Voltmeter unity power factor
Response Time and Overshoot 3 seconds (max.) for 21⁄2", 31⁄2", 41⁄2" size for microammeters; 2 seconds (max.) for all other DC ratings, and 2.5 seconds (max) for AC ratings. Maximum of 40% overshoot.
Additional Notes
  1. Pivot & jewel instruments are not available in 1 1⁄2" size.
  2. Meter with flame retardant window and base only available in 2 1⁄2", 3 1⁄2" and 4 1⁄2" sizes. Include /CUL or /UL at the end of the catalog number or contact factory.
  3. For ratings and scales not listed contact the factory.

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