Weschler Instruments – Manufacturer & distributor of measurement & control equipment
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Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
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Tri-Color Edgewise Bargraph Meters

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Tri-Color Edgewise Bargraph Meters

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The Weschler Instruments BG "TC", TriColor BarGraphs provide the quickest way to spot problems in your process control panels with bright changing colors. Quick identification of trouble conditions can help prevent equipment damage or production loss, thus reducing down time and maintenance costs, and improving operational safety. Each 40 segment LED (Light Emitting Diode) of the BG TC family has the ability to illuminate as Red (Danger), Yellow (Caution), or Green (Safe condition). The bar color identification can be easily changed by the user, from the front pushbuttons or through a tamper safe mode. The fully programmable Weschler BG TC BarGraph™ fits the widest range of inputs and retrofits most edgewise switchboard and panel meters. Weschler's instruments satisfy the high quality standards set forth by the utility, OEM, and process control industries.

  • Large, high resolution 40 segment LED bar array
  • 5 digit display with resolution to 0.01%
  • Field programmable functions
    Zero and full scale point location, Setpoint type (Hi or Low), Hysteresis & latching, Setpoint time delay, 16 step dimming, Digital display for engineering units, Enable/disable front buttons, I.D. selection for communication, Bar form, Peak / Valley enable Color zones, Over-range/Under-range flashing, Lamp test
  • Form-C relay outputs
    Normally Open
    • 5A, resistive at 250V AC
    • 5A, resistive at 28V DC
    Normally Closed
    • 3A, resistive at 250V AC
    • 2A, resistive at 28V DC
  • Peak and Valley hold
  • Trend indication for signal direction
  • Communication
    RS232/485, SCADA, DCS
  • Analog retransmit
    4-20, 0-1mA DC
    1-5, 0-1, 0-5V DC
  • Retrofit sizes for:
    GE/Yokogawa 180, Bailey draft gauges, Crompton 128, Dixson SA/BB 101 (all models), Dixson BJ101, K051, Hays Republic 216, 3600/V5A, Foxboro 65PP, Sigma/International Instruments 1151
  • Versatile selection of inputs
    DC – Up to 5A & 250V
    AC – Up to 5A & 250V
    Thermocouple – J, K, T
    RTD – 10ohm Cu or 100ohm Pt
    Serial – ASCII
    Frequency – Line or mag pickup
    Process Control – V, mA


 width= Tri-Color Edgewise Bargraph Meters Brochure
(PDF, 231KB)

 width= Weschler Bargraph Selector Guide
(PDF, 147KB)