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LEVEL | SWITCHES
| LEVEL SWITCHES |
| Liquid
Level Switch |
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Series L8 Flotect® Liquid Level Switch
features a leak proof body and float constructed
from tough, durable polyphenylene sulfide which
has excellent chemical resistance. Because the
liquid level snap switch is magnetically actuated,
there is no direct mechanical linkage to leak
or fail, assuring longer life and decreased maintenance
costs. This inexpensive unit is ideal for liquid
level alarm, indication or control. Installation
is quick and easy - simply install in a horizontal
position with the index arrow pointing down.
The L8 Flotect® Liquid Level Control is UL
recognized as an industrial motor controller per
UL standard 508, suitable for mounting in a protected
environment. This lightweight switch can be used
in numerous chemical processes, industrial systems
and similar applications where process conditions
are compatible with polyphenylene sulfide, ceramic
8 and 316 stainless steel. This liquid level switch
provides accurate setpoint control of liquids
with specific gravities as low as 0.6. This compact
and reliable control is designed to handle temperatures
up to 212°F (100°C) and pressures to 150
psig (10 bar).
PRODUCT APPLICATIONS
• Environmental Control
• Waste Water
• Scrubber Systems
• Holding Tanks
• Cooling Towers
• Chemical/Petroleum Processing
• Plating and Washing Tanks
• Sewage Treatment
• Car Washes
• Remediation Systems
SPECIFICATIONS
Service: Compatible liquids.
Wetted Materials: Float and Body: Polyphenylene
Sulfide (PPS); Pin and Spring: 316 SS or Inconel®
Alloy; Magnet: Ceramic 8.
Temperature Limit: 212°F (100°C).
Pressure Limit: 150 psig (10.34 bar).
Enclosure Rating: General purpose. WP/WP2
options are weatherproof.
Switch Type: SPDT snap switch. MV option
is a SPDT gold contact snap switch.
Electrical Ratings: 5A @ 125/250 VAC, 5A
resistive, 3A inductive @ 30 VDC. MV option: 1A
@ 125 VAC, 1A resistive, 0.5A inductive @ 30 VDC.
Electrical Connections: 18 AWG, 18"
(460 mm) long.
Conduit Connection: 1/2" male NPT,
1/2" female NPT on WP and WP2.
Process Connection: 1" male NPT.
Mounting Orientation: Horizontal with index
arrow pointing down.
Weight: 5 oz (142 g).
Agency Approvals: CE, UL 508 for US and
Canada.
Specific Gravity: 0.6 minimum.
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Series L8, Level Switch
OPTIONS
Gold Plated Contacts, for dry circuits. Rated
1A @ 125 VAC; 1A resistive, 0.5A inductive @ 30
VDC.
To order add suffix -MV.
Example: L8-MV
Inconel® Alloy Option. Inconel® Alloy
replaces standard 316 SS wetted parts. Wetted parts
are Inconel® Alloy, ceramic 8, and Polyphenylene
Sulfide.
To order add suffix-INC.
Example: L8-INC
Weatherproof Enclosure. Optional housing
is phenylpolioxide and provides weatherproof protection
for electrical wiring.
To order add suffix -WP. (Not UL approved)
Example: L8-WP
Weatherproof Enclosure. Optional housing
is aluminum and provides weatherproof protection
for electrical wiring.
To order add suffix -WP2. (Not UL approved)
Example: L8-WP2 |
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| Mini Size Level Switch |
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The Mini-Size Series L10 Flotect® Level Switches
combine low cost with top quality materials and
construction for great value and years of reliable
liquid level control. Wide media compatibility is
assured with a choice of brass or stainless steel
bodies and external tees; polypropylene or stainless
steel floats. Two basic configurations are offered;
with 1" NPT male threads for direct side mounting
through a half coupling or with factory installed
tee for external mounting.
All Series L10 controls feature a hermetically
sealed, magnetically actuated SPST reed switch
which is encapsulated in a polypropylene housing.
Units are quickly and easily adjusted for your
choice of normally open or normally closed operation
thanks to a unique patented design. Just loosen
two screws and instantly slide the switch assembly
to the action required. N.O. and N.C. markings
are clearly visible. This feature also speeds
switch replacement if damage occurs.
Three types of floats are offered to accommodate
liquids with specific gravities as low as 0.5;
maximum pressures to 2000 psig (137.8 bar). Wire
leads are 22 AWG X 18" (460 mm) and exit
the switch assembly through 1/8" male NPT
threads. These controls are UL recognized and
CSA listed.
SPECIFICATIONS
Service: Compatible liquids.
Wetted Materials: Float: Solid Polypropylene
or 304 SS; Body: Brass or 303 SS; Magnet: Ceramic;
External Float Chamber (Tee): None, brass or 304
SS; Other: Lever Arm, Pin, Spring, etc.: 301 SS.
Temperature Limit: 200°F (93°C).
Pressure Limit: See Catalog page.
Switch Type: SPST hermetically sealed reed
switch. Field adjustable for normally open or
normally closed.
Electrical Rating: 1.5A @ 24 VDC resistive,
0.001A @ 200 VDC resistive, 0.5A @ 125 VAC.
Electrical Connection: 22 AWG, 18"
(460 mm) long.
Conduit Connection: 1/8" male NPT.
Process Connection: 1" male NPT standard
on models without external float chamber. Change
3 in model number to 4 for 1-1/4", to 5 for
1-1/2", or 6 for 2". 1" female
NPT on models with external float chamber.
Mounting Orientation: Horizontal with index
arrow pointing down.
Weight: Approximately 9 oz (0.255 kg) without
external float chamber, 2.25 lb (1.02 kg) with
external float chamber.
Specific Gravity: See Catalog page.
Agency Approvals: UL and CSA.
Switch Enclosure: Polypropylene.
| Model |
Body
Material |
Installation/
Mounting |
Float
Material |
Max. Press.
psig (bar) |
Min.
S.G. |
L10-B-3-O
L10-B-3-A
L10-B-3-C
L10-B-3-B
L10-B-3-H
L10-S-3-O
L10-S-3-A
L10-S-3-C
L10-S-3-S
L10-S-3-L |
Brass
Brass
Brass
Brass
Brass
303 SS
303 SS
303 SS
303 SS
303 SS |
Side Wall Mounting
Side Wall Mounting
Side Wall Mounting
Brass External Float Chamber (Tee)
Brass External Float Chamber (Tee)
Side Wall Mounting
Side Wall Mounting
Side Wall Mounting
304 SS External Float Chamber (Tee)
304 SS External Float Chamber (Tee) |
Polypropylene Spherical
304 SS Cylindrical
304 SS Spherical
Polypropylene Spherical
304 SS Spherical
Polypropylene Spherical
304 SS Cylindrical
304 SS Spherical
Polypropylene Spherical
304 SS Spherical |
1000 (69)
200 (13.8)
350 (24.1)
250 (17.2)
250 (17.2)
2000 (137.8)
200 (13.8)
350 (24.1)
2000 (137.8)
350 (24.1) |
0.9
0.5
0.7
0.9
0.7
0.9
0.5
0.7
0.9
0.7 |
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| FLOAT SWITCHES |
| Float
Switch |
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Rugged and reliable the Series L4 Flotect®
Float Switch operates automatically to indicate
tank level. Perfect for starting or stopping pumps,
opening or closing valves, or actuating level
alarm signals. A unique magnetically actuated
switching design gives superior performance. There
are no bellows, springs, or seals to fail. Instead,
the free-swinging float attracts a magnet within
the solid metal switch body, actuating a snap
switch by means of a simple lever arm. Float arm
hinge design limits the arm angle to prevent vertical
hang up.
PRODUCT FEATURES
• Leak proof body machined from bar stock
• Choice of floats dependant on maximum pressure
and specific gravity
• Weatherproof, designed to meet NEMA 4
• Explosion-proof
• Installs directly and easily into tank
with a threaded branch connection or flange
• Electrical assembly can be easily replaced
without removing the unit from the installation
so that the process does not have to be shut down
• Horizontal installation or optional top
mount vertical installation
PRODUCT APPLICATIONS
• Direct pump control for maintaining level
• Automatic tank dump operations
• Control levels or provide alarms in sumps,
scrubber systems, hydro-pneumatic tanks, low pressure
boilers, and various wastewater/sewage treatment
processes
SPECIFICATIONS
Service: Liquids compatible with wetted materials.
Wetted Materials: Float and Rod: 316SS; Body:
Brass or 316SS standard; Magnet Keeper: 430SS
standard, 316SS or Nickel optional.
Temperature Limits: 4 to 275°F (-20 to 135°C)
standard. MT high temperature option 400°F
(205°C), (MT option not UL, CSA, ATEX or SAA).
Pressure Limit: Brass body 1000 psig (69 bar),
316SS body 2000 psig (138 bar). Standard float
rated 100 psig (6.9 bar). For other floats see
options on Options/Accessories page.
Enclosure Rating: Weatherproof and explosion-proof.
Listed with UL and CSA for Class I, Groups C and
D; Class II, Groups E, F, and G. ATEX CE 0344
EX II 2 G EEx d IIB T6 -20°C?Tamb?75°C,
EC-Type Certificate No: KEMA 03 ATEX 2383. SAA:
Exd II C T6 (T amb=60°C). IP66 C1 I, Zone
I. Also FM approved.
Switch Type: SPDT snap switch standard, DPDT snap
switch optional.
Electrical Rating: UL, FM, ATEX and SAA models:
10A @ 125/250 VAC. CSA models: 5A @ 125/250 VAC;
5A res., 3A ind. @ 30 VDC. MV option: 1A @ 125
VAC; 1A res., .5A ind. @ 30 VDC. MT option: 5A
@ 125/250 VAC. (MT and MV options not UL, CSA,
FM, ATEX or SAA).
Electrical Connection: UL and CSA models: 16 AWG,
6" (152 mm) long. ATEX and SAA units: terminal
block.
Process Connection: 1-1/2" male NPT standard,
2-1/2" male NPT required for optional floats.
Mounting Orientation: Horizontal installation
standard, optional vertical top mount.
Weight: 4 lb 9 oz (2.07 kg).
Deadband: 3/4" (19 mm) for standard float.
Specific Gravity: 0.7 minimum with standard float.
For other floats see Options/Accessories page.
Agency Approvals: UL, CSA, FM, CE and ATEX.
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| Model |
Description |
L4
L4SS |
Brass body, side wall mounting
316SS* body, sidewall mounting |
*316SS body and float with 430SS magnet keeper (wetted
part).
OPTIONS FOR L4 SWITCHES ABOVE — Add
suffixes to model numbers
DPDT contacts, add suffix -D
Gold Plated Contacts option for dry circuits,
add suffix -MV (see electrical rating in specifications,
no listings or approvals)
High Temperature option rated 400°F (204°C),
add suffix -MT (see electrical rating in specifications,
no listings or approvals)
Time Delay Relay option with 2 SPDT contacts,
adjustable from 0-1 to 0-31 minutes. Add suffix
-TRI (increasing flow) or
-TRD (decreasing flow) (no listings or approvals)
316 SS Magnet Keeper option to replace standard
430 SS, add suffix -316
ATEX approved construction, add suffix -AT
SAA approved construction, add suffix -SAA
Top Mounted option for vertical flange installation
(distance from flange face to centerline of float
to be specified,
20½ (508 mm) maximum), add suffix -TOP
Optional Floats (all 2-1/2½ spherical):
304 SS rated 50 psig (3.5 bar) and 0.5 min. s.g.,
add suffix -50
316 SS rated 150 psig (10.3 bar) and 0.7 min. s.g.,
add suffix -150
304 SS rated 300 psig (20.7 bar) and 0.7 min. s.g.,
add suffix -300 |
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