ABB KM26 Operating Instruction page 15

KM26 | M AG N ET I C LE V EL G AUG E | O I/KM 2 6 -EN RE V I
. . . 3 Mounting
Note
Insulation jacket pads are intended to wrap only the KM26
chamber, not the limit switches themselves. Refer to figure 17
and table 3.
6. Any conduit or fittings connected to a ABB magnetically
actuated limit switch should be constructed of aluminum or
other non-ferrous material. This is necessary to avoid
interference with the operation of the KM26 float or the
associated switches.
7. Two (or mulitple) magnetically actuated limited switches
can be mounted so that they may trip at the same point or at
two different points separated by less that the length of the
switch.
8. Limit switches can not be within 1 in. of the upper and
lower process connections because the float must travel past
the switch. Process connections, gussets, support brackets,
etc. may interfere with installation at desired locations. Cam
actuated switches must be mounted in the correct
orientation.
Magnetic level gague switches
Model # Approvals
Type
LMS100 FM, FMC Hermetically
ATEX, IEC sealed read
switch
LMS200 CFMus, Aluminum
ATEX/
IECEx
MS41 FM, CSA, Stainless steel,
ATEX dual
compartment,
hermetically
sealed,
explosion proof
PS45 Non- Stainless steel
electric
Note: For details refer respective switch datasheet
Enclosure
Electrical
Rating
connection contacts
IP67 ¼ in. NPT
NEMA 4x
NEMA 4x ¾ in. FNPT Cam driven,
snap action
NEMA 4x ½ in. FNPT Cam driven,
snap action
NEMA 4x ⅛ in. MNPT Pneumatic
port
Figure 17 - MLG with switches
Switching mechanism
Min. / max.
Type /
Rating process
temp
Reed AC/DC -40 °F
SPDT 1 A (-40 °C)
300 °F
(149 °C);
800 °F
(427 °C)
AC: 10 A -60 °F
DC: 2.6 A (-51 °C)
DPDT
300 °F
(149 °C);
600 °F
(316 °C)
AC: 10 A -320°F
DC: 2.6 A (-195°C) with
DPDT option
300 °F
(149 °C);
1000 °F
(538 °C)
1 to 100 0 °F (-18 °C)
psig
180 °F
(82 °C);
450 °F
(232 °C)
Application
High
Deadband Vibration
temp.
•
⅛ in.
•
⅞ in.
• •
15/16 in.
15/16 in.
15
High
corrosion
•
•