Product Overview

FLOTECT
®
LIQUID LEVEL SWITCHES
Easy In-wall or External Installation, Up to 2000 psig (138 bar), Compact Size
The Series L6 Flotect
®
Liquid Level Switches are rugged and reliable oat switches
which operates automatically to indicate tank level. It is offered with a 303 SS or brass
body with spherical or cylindrical oat options.
FEATURES/BENEFITS
• Compact design is built for years of trouble-free service
• Simple and dependable operation with no mechanical linkage
• Float lever pivoted within the body moves when the process liquid displaces the oat
and magnet on the opposite end of the oat lever controls a second magnet on the
switch actuating lever located in the switch housing
• Leak proof lower body machined from bar stock
• Side wall or direct tee mounting options available to act as an external oat chamber
• Weatherproof and explosion-proof body for demanding outdoor applications
• Electrical assembly can be easily replaced without removing the unit from the
installation so that the process does not have to be shut down
• Sensitive to level changes of less than 1/2˝ (12 mm)
APPLICATIONS
• Direct pump control for maintaining level
• Automatic tank dump operations
• Level control
• Valve control
• Level alarm in sumps, scrubber
systems, hydro-pneumatic tanks,
boilers, and water/wastewater
treatment processes
1 [25.40] FEMALE NPT OR BSPT
TYP 2 PLACES
3-5/64
[78.18]
1-9/64
[28.97]
2 [50.80]
HEX
8-9/16 [217.49]
3/4 [19.05] MALE
NPT OR BSPT
CONDUIT CONNECTION
Ø1-1/16
[26.99]
Ø1 [25.40]
1-3/4
[44.45]
1 [25.40] MALE
NPT OR BSPT
3/4
[19.05]
6
[152.40]
Ø1-1/16
[26.99]
3/4 [19.05] MALE
NPT OR BSPT
CONDUIT CONNECTIO
N
Ø1 [25.40] x 2 [50.80]
LONG FLOAT
1 [25.40]
MALE NPT
OR BSPT
2-7/8
[73.03]
1-1/16 [26.99]
6-1/2
[165.10]
Ø1-1/16
[26.99]
3/4 [19.05] MALE NPT OR BSPT
CONDUIT CONNECTION
SPECIFICATIONS
Service: Liquids compatible with wetted materials.
Wetted Materials: Float: Solid polypropylene or 304 SS; Lower body: Brass or 303
SS; Magnet: Ceramic; External oat chamber (tee): Matches lower body choice of
brass or 303 SS; Other: Lever arm, spring, pin, etc.: 301 SS.
Temperature Limit: -4 to 220°F (-20 to 105°C) Standard, MT high temperature
option 400°F (205°C)(MT not UL, CSA, ATEX, IECEx and KC). ATEX compliant AT,
IECEx IEC and KC option ambient temperature -4 to 167°F (-20 to 75°C) process
temperature: -4 to 220°F (-20 to 105°C).
Pressure Limits: See model chart.
Enclosure Rating: Weatherproof and explosion-proof. Listed with UL and CSA for
Class I, Groups A, B, C and D; Class II, Groups E, F, and G. (Group A on SS body
models only).
ATEX
2813 II 2 G Ex db IIC T6 Gb Process Temp≤75°C.
EU-Type Certicate No.: KEMA 04ATEX2128.
ATEX Standards: EN 60079-0:2012+A11:2013; EN 60079-1:2014.
IECEx Certied: For Ex d IIC T6 Gb Process Temp≤ 75°C.
IECEx Certicate of Conformity: IECEx DEK II.0039.
IECEx Standards: IEC 60079-0:2011; IEC 60079-1:2014.
Korean Certied (KC) for Ex db IIC T6 Gb Process Temp≤75°C.
KTL Certicate Number: 12-KB4BO-0091.
Switch Type: SPDT snap switch standard, DPDT snap switch optional.
Electrical Rating: UL models: 5 A @ 125/250 VAC (V~). CSA, ATEX and IECEx
models: 5 A @ 125/250 VAC (V~); 5 A res., 3 A ind. @ 30 VDC (V ). MV option:
.1 A @ 125 VAC (V~). MT option: 5 A @125/250 VAC (V~). [MT option not UL, CSA,
ATEX or IECEx].
Electrical Connections: UL models: 12-KB4BO-0091 18 AWG, 18˝ (457.20 mm)
long. ATEX/CSA/IECEx models: Terminal block.
Upper Body: Brass or 303 SS.
Conduit Connection: 3/4˝ (19.05 mm) male NPT standard, 3/4˝ (19.05) female
NPT or M25 with BSPT option on junction box models.
Process Connection: 1˝ (25.40 mm) male NPT or 1˝ (25.40 mm) male BSPT on
models without external oat chamber, 1˝ (25.40 mm) female NPT or 1˝ (25.40 mm)
female BSPT on models with external oat chamber.
Mounting Orientation: Horizontal with index arrow pointing down.
Specic Gravity: See chart.
Weight: Approximately 1 lb (.5 kg) without external oat chamber, 1.75 lb (.8 kg)
with external oat chamber.
Agency Approvals: ATEX, CE, CSA, IECEx, KTL, UL.
Model L6 with external oat chamber Model L6 with spherical oat Model L6 with cylindrical oat
DWYER INSTRUMENTS, INC. | dwyer-inst.com310
Level Switches,
Float
LEVEL
SERIES L6 | W.E. ANDERSON
™
BY DWYER
V
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USA: California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
MODEL CHART
Model Body Installation Float Material Process Connection Max. Pressure psig (bar) Min. S.G.
L6EPB-B-S-3-O
L6EPB-B-S-3-A
L6EPB-B-S-3-C
L6EPB-B-S-3-B
L6EPB-B-S-3-H
L6EPS-S-S-3-O
L6EPS-S-S-3-A
L6EPS-S-S-3-C
L6EPS-S-S-3-S
L6EPS-S-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 oat chamber (tee)
Brass external oat chamber (tee)
Side wall mounting
Side wall mounting
Side wall mounting
304 SS external oat chamber (tee)
304 SS external oat 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
NPT
NPT
NPT
NPT
NPT
NPT
NPT
NPT
1000 (69)
200 (13.8)
350 (24.1)
250 (17.2)
250 (17.2)
2000 (138)
200 (13.8)
350 (24.1)
2000 (138)
350 (24.1)
0.9
0.5
0.7
0.9
0.7
0.9
0.5
0.7
0.9
0.7
BSPT process connection and M25 conduit connection. Note: To order, change eighth character in model to “4”. Example: L6EPB-B-S-4-A
OPTIONS
To order
add sufx: Description
-MV
-MT
-CSA
-AT
-IEC
Gold plated contacts for dry circuits (see electrical rating in
specications)
High temperature rated 400°F (204°C) (see electrical rating in
specications, no listings or approvals, only available on models with
stainless steel oats)
CSA and UL approved construction, includes weatherproof and
explosion-proof junction box
ATEX compliant construction includes, weatherproof and explosion-
proof, junction box
IECEx certied construction, weatherproof and explosion-proof,
junction box
Note: M25 is not available with the CSA housing.
DPDT Contacts
Note: To order, change seventh character in model number to “D”.
Example: L6EPB-B-D-3-O
Options Not Shown: 1-1/2˝ and 2˝ (38.10 and 50.80 mm) male NPT or 1-1/2˝ and
2˝ (38.10 and 50.80 mm) male BSPT process connection, 2˝ female NPT or 2˝
female BSPT.