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Typical Installation Fittings
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Offset Stems
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| Obstructions in tanks and difficult mountings often require bending the tube to allow proper installation. Madison's engineering staff can design switches with offset stems to solve many types of installation problems. All metal stems are available with offset configurations. |
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Adjustable Liquid Level Switches
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| Many Madison switches can be furnished in adjustable form, permitting installation personnel to set any desired level of switch actuation. A male pipe plug with integral compression fitting is installed in the tank. The tube containing the reed switch can then be adjusted to actuate at any desired level. All metal multi-point switches are available with the adjustable feature. |
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Temperature Switches
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Including a temperature sensor in the same unit as a liquid level switch can lower installation costs by eliminating the need for a separate temperature device. Madison offers thermocouple Types K, J and T, thin-film platinum RTD and Bimetal switches as standards, with other options available.
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High-Pressure Applications
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Madison Company uses special floats, stems, fittings and construction techniques to produce level switches which will operate properly under conditions of severely high pressure. Two high pressure ranges are available: HP (750 PSIG maximum) and VHP (1500 PSIG maximum).
The M5602 switch with 2" NPT pipe plug mounting is available for use under high-pressure conditions.
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Multi-Point Switch Setup Criteria
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| For M5602, M5402, M8602, M8402, M4602, M4302: |
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L (Total) = L5 + 1-1/2" (38.1mm) min. |
| Distance from mounting fitting to first switch = 1-1/4" (31.7mm) min. |
| Minimum distance between floats: 2-1/2" (63.5mm) |
| Minimum LH = 2-1/2" (63.5mm) |
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| For M5002, M5042, M8080, M8002, M8042, M4402, M4502: |
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L (Total) = L4 + 1" (25.4mm) min. |
| Distance from mounting fitting to first switch = 3/4" (19mm) Min. |
| Minimum distance between floats: 1-1/2" (38.1mm) / 1-3/4" (44.4mm) for M8080 |
Minimum LH = 1-1/2" (38.1mm)
Not applicable for M8080* |
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* Note: 3 levels maximum on models M8080. |
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| For M8802: |
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L (Total) = L5 + 2" (50.8mm) min. |
| Distance from mounting fitting to first switch = 1-3/4" (44.4mm) min. |
| Minimum distance between floats: 3" (76.2mm) |
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| Special Options |
| Please consult factory concerning available options such as the following: |
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Terminations |
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Temperature sensors |
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Other fittings |
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Adjustable fittings |
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Offset switches |
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Junction Boxes |
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Extra Cable Lengths |
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Cable |
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Floats |
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Plastic Colors |
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