| Madison Company offers a wide variety of relays and controllers for use with our level and conductivity switches and sensors. Relays are used for switch overload protection and for solenoid valve, pump and alarm applications. Controllers are used in pump-up or pump-down applications. |
| Types of Accessories (click for standard models and specifications): |
| Relays |
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R1 General-Purpose Relays provide liquid level switch overload protection for all Madison single-level and multi-level switches. Multi-level switches typically require one relay per level. Input coils are available for 110 VAC, 220 VAC or 12 VDC applications. The isolated output contacts can be used to switch a wide variety of voltages. The relay can be used for solenoid valves, pumps and alarm applications that do not exceed the listed output contact ratings. |
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| Controllers |
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ESM Contollers & ESM Indicators mate to any of our liquid level sensors, ultrasonic sensors, thermocouples or RTD temperature sensors. This common family of interfacing devices offers both a base unit and/or modular chip that can be installed to provide flexibility when input signals vary from one sensor to another. this is the most cost-effective way to manage multiple application needs.
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R2 Level Controllers provide high-level, low-level or bi-level control in a convenient octal plug-in package. Controllers accept input from float switches or conductivity probes. Onboard sensitivity-adjustment for conductivity probes eliminates false tripping caused by floating debris and foaming agents. Isolated electromechanical relay contacts can be directly connected to the control circuitry or control pumps and solenoids. |
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| Displays |
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ED Series Loop Powered Displays indicate the percentage full or empty in tanks whose level is being monitored by a sensor with a 4-20 mA output. Both probe-mount and wall-mount units are available. |
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| PD Series Meters, Controllers & Annunciators |
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Model PD765 Trident Meter is a universal panel meter for all common process display applications. Meter is factory calibrated to accept process voltage and current inputs, 100 ohm platinum RTDs and the four most common thermocouples.
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Loop Powered Meters are available in NEMA 4X and explosion-proof models, with a loop powered backlighting option.
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