RFQ

Features

• Accuracy: ±2%
• ± 3% AC – rectifier type (60 Hz sine wave)
• Full range of inputs
• Tracking: ± 1 1/2% DC
• Repeatability: ± 0.5% DC and rectifier type
• Orientation: Horizontal, Vertical or specified mounting angle
• Slim Compact design provides the answer to "space" problems
• They can stand alone or be stacked in space-saving clusters
• UL models available
• ****Optional illumination available for model 287 and 288
  • AC & DC Voltmeters
  • AC & DC Ammeters, shunt rated or self contained
  • Expanded scale meter
  • Process (4-20 mADC)
  • Frequency Meters

Applications

• Standard panel applications
• Instrumentation – manufacturing component
• For space challenged panels
• When it is necessary to quickly view multiple meter readings in a control room situation. (trending)

Description

The 280 Series were designed to handle applications where panel space is at a premium. They can be mounted horizontally or vertically and meet ANSI C39.1. Unlike most edgewise meters, the 280 series provides an accuracy of ±2% of full scale in DC and ±3% for AC.

The thin element design still provides the maximum performance in the smallest of spaces. Available in 1 1/2" to 3 1/2" sizes for vertical or horizontal mounting. They can stand alone or be stacked in space-saving clusters. Built-in magnetic shielding prevents interference among meters and removes the burden of special calibration.

Literature Specifications Literature and Technical Information Panel Instrumentation ++ 280 Series | Specification sheet ++ Dimensional Drawings – 286 Series – 1 1/2" model ++ Dimensional Drawings – 287 Series – 2 1/2" model ++ Dimensional Drawings – 287 Series – 3 1/2" model ++ Yokogawa Panel Meter Catalog ++ Meter Glossary – Technical Terms Model: Yokogawa 286 Series 1 /12" | Model 287 Series 2 1/2" | Model 288 3 1/2 " | Display Scaling: Customized to any scaling desired, from linear to specialized Cos Ø, square root distributions, with color applications for visual emphasis and to any desired engineering units. Specific Accuracies Basic Accuracy: ±2.0% of full scale basic accuracy class. Rectifier Type Meters: ±3% of full scale basic accuracy class. Zero Suppressed Meters: Errors at 20% suppression = ±3% of end-scale Higher Accuracy: 1% of Full scale or better General specifications: Position of use: Horizontal (scale) standard, Vertical or to specified angle or position Full scale deflection angle: 53 ° Full scale length: Size Arc Length 11⁄2” 1.93" 21⁄2” 1.93" 31⁄2” 2.70” Movement: Taut Band 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. Pointer: Standard Red Case and Cover: Clear plastic Dielectric (Hi-pot): 1500 VRMS for 1-1/2” and 2-1/2” sizes. 2600 VRMS for 3-1/2” size. Overload rating: DC Voltmeters — 20% momentary and sustained; DC ammeters (momentary) — 10 times the rated current for 10 consecutive intervals of .5 second with 1 minute intervals between successive applications; DC ammeters (sustained) — 20% for 6 hours Overshoot: 25% (max.) for 1-1/2” size, 40% (max.) for 2-1/2” and 3-1/2” sizes Response time: 3 seconds max for µA meters 2 seconds (max.) for mA, A, mV, & V meters Environment: Operating Temp.: 0 to 40°C (32 to 104°F) Storage Temp: -10 to 50°C (14 to 50°F) Relative Humidity: 95% (non condensing) Bezel and Mounting Hardware: Included with meter