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
|
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: |
 |
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) |
|
| For
M5002, M5042, M8080, M8002, M8042, M4402,
M4502: |
|
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* |
| |
*
Note: 3 levels maximum on models M8080. |
|
| For
M8802: |
|
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: |
| • |
Terminations |
| • |
Temperature
sensors |
| • |
Other
fittings |
| • |
Adjustable
fittings |
| • |
Offset
switches |
| • |
Junction
Boxes |
| • |
Extra
Cable Lengths |
| • |
Cable |
| • |
Floats |
| • |
Plastic
Colors |
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| [Top
of page | Reference] |
