Weschler - AC Voltage Analog Switchboard Meters
Weschler 4½” (KA-241, KC-241) & 8¾” (KA-261, KC-261) instruments are designed to achieve the ultimate in reliability and performance. These instruments are recommended for use on electric utility switchboards and industrial process control panels. Commercial instruments comply with ANSI Standard C39.1 for 1% class switchboard instruments. The Hi-Shock versions were developed to meet the special needs of U.S. Navy shipboard applications. They are also suitable for commercial, marine and industrial applications subjected to humid conditions or severe mechanical shocks.
- High accuracy, full view design
- Volts, amps, watts, vars, speed, frequency and power factor
- High overload capacity
- Ruggedized (High Shock) versions
- Ultimate in reliability and performance
- Special scales and calibration
- Formerly Westinghouse brand
Setpoints & Relays
Up to four setpoints can be configured for control and alarm functions. Setpoints are indicated on the bar display by a lit segment if the bar is below the setpoint and a dark segment if the display is above the setpoint. Up to 4 setpoints are available in each unit. Relays can be ordered to provide external control and alarms. Each relay may be configured to activate above its setpoint or below its setpoint. High current outputs handle SPST and SPDT switching up to 10A and 250VAC. Solid state relays (DC or AC/DC) are also available in the edgewise case. Setpoints 1 & 2 can be combined to define a hysteresis band for relay one. This is particularly useful in tank level applications. Depending on the relay mode selected, it will perform either a tank fill or tank empty function.
Bar Display
The 101 segment bar provides 1% resolution for the selected bar span, which can be any portion of the input range. Red, green and tricolor bars are available. The tricolor bar can be set to change color based on signal level. This provides an easily seen indication when a measured parameter needs attention. The setpoint values are the transition points for color changes. Any color can be set between two adjacent setpoint values. In a common application, the bar is green when the signal is below SP1. When the signal is between SP1 & SP2, the entire bar changes to orange. Above SP2, the entire bar changes to red.
Analog Retransmit
A 0-10V or 4-20mA isolated analog output is available for remote indication or SCADA interface. The output can be adjusted to track any portion of the input span. Rescaling of the bar will not affect the analog output. An internal jumper quickly changes between V & mA.
Initial setup on the Quatro meters is done through the front panel buttons. Once set, installation of a rear panel jumper disables this feature.