Install Instructions

Bulletin E-20
Specifications - Installation and Operating Instructions
Float Switch
Explosion-Proof; UL and CSA Listed -
Class I, Groups *A, B, C, & D
Class II, Groups E, F & G
Directive 2014/34/EU (ATEX) Compliant for
2813 II 2 G Ex db IIC T6 Gb Process Temp≤75°C
IECEx Compliant for Ex db IIC T6 Gb Process Temp≤75°C
*(Group A, stainless steel body only)
SPECIFICATIONS
Service: Liquids compatible with wetted materials.
Wetted Materials: Float: Solid polypropylene or 304 SS; Lower Body: Brass or
303 SS; Magnet: Ceramic; External Float 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 next page.
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
stainless steel body models only).
2813 II 2 G Ex db IIC T6 Gb Process Temp≤75°C.
EU-Type Certificate No.: KEMA 04ATEX2128.
ATEX Standards: EN 60079-0: 2012 + A11: 2013; EN60079-1: 2014.
IECEx Certified: For Ex db IIC T6 Gb Process Temp≤ 75°C.
IECEx Certificate of Conformity: IECEx DEK II.0039.
IECEx Standards: IEC 60079-00: 2011; IEC 60079-1: 2014.
Korean Certified (KC) for Ex d IIC T6 Gb Process Temp≤75°C.
KTL Certificate 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~); 5A res., 3 A ind. @ 30 VDC (V ). MV option:
0.1 A @ 125 VAC (V~). MT option: 5 A @125/250 VAC (V~). [MT option not UL,
CSA, ATEX or IECEx].
Electrical Connections: UL models: 18 AWG, 18˝ (460 mm) long.
ATEX/CSA/IECEx models: terminal block.
Upper Body: Brass or 303 SS.
Conduit Connection: 3/4˝ male NPT standard, 3/4˝ female NPT on junction box
models. M25 x 1.5 with - BSPT option.
Process Connection: 1˝ male NPT on models without external float chamber, 1˝
female NPT on models with external float chamber.
Mounting Orientation: Horizontal with index arrow pointing down.
Weight: Approximately 1 lb (.5 kg) without external float chamber, 1.75 lb (.8 kg)
with external float chamber.
Specific Gravity: See next page.
Model L6
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: [phone] www.dwyer-inst.com
Fax: [phone] e-mail: [e-mail]
E-20 English Only (ATEX).qxp_FR# 440726-00 7/31/20 1:38 PM Page 1