Dwyer L8 - Manual

Model L8 Flotect ® Liquid Level Switch features a leak proof
body and float constructed from tough, durable polyphenylene sul-
fide (PPS) which has excellent chemical resistance. Because the liq-
uid 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 indus-
trial motor controller per UL standard 508, suitable for mounting in
a protected environment. This lightweight switch can be used in nu-
merous chemical process, industrial systems and similar applica-
tions 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 han-
dle temperatures up to 212°F (100°C) and pressures to 150 psig
(10 bar).
Model L8 FLOTECT ® Liquid Level Switch
Bulletin E-41
® Specifications – Installation and Operating Instructions
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 option is weatherproof.
Switch Type: SPDT snap switch. MV option is a SPDT gold con-
tact snap switch.
Electrical Rating: 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.
Process Connection: 1˝ male NPT.
Mounting Orientation: Horizontal with index arrow pointing
down.
Weight: 5 oz (0.142 kg).
Agency Approvals: CE, UL 508 for US and Canada.
Specific Gravity: 0.6 minimum.
W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S.A.
Phone: 219/879-8000 www.dwyer-inst.com
Fax: 219/872-9057 e-mail: [email protected]
Model L8
1/2 NPTM 1-5/16 OCTAGON
(33.34)
ø1-21/32
(41.31) 1 NPTM
ø1-1/8
(28.58)
2-17/32
(64.29)
4-5/16
(109.54)
3-1/16
(77.79)
10.875
(276.23)
1/2 FEMALE NPT
CONDUIT CONNECTION
Model L8-WP
MODEL
L8 Level Switch
OPTIONS
-MV, Gold Plated Contacts, for dry circuits. Rated 1A @ 125
VAC; 1A resistive, 0.5A inductive @ 30 VDC. Example L8-MV
-INC, Inconel ® Option. Inconel ® alloy replaces standard 316 SS
wetted parts. Wetted parts are Inconel ® alloy, ceramic 8, and
Polyphenylene Sulfide. Example: L8-INC
-WP, Weatherproof Enclosure. Optional housing is phenylpo-
lioxide and provides weatherproof protection for electrical wiring.
Example: L8-WP
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