Instruction Manual

WETTED MATERIALS CHART
Model Brass Bronze Ceramic Polypropylene 301 SS 303 SS 304 SS
B-S-3-A
B-S-3-B
B-S-3-C
B-S-3-H
B-S-3-O
S-S-3-A
S-S-3-C
S-S-3-L
S-S-3-O
S-S-3-S
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Note: ATEX, IECEx and KC units only: The temperature class is determined by the
maximum ambient and or process temperature. Units are intended to be used in
ambient of -20°C≤ Tamb ≤75°C. Units may be used in process temperatures up to
105°C providing the enclosure and switch body temperatures do not exceed 75°C.
The standard Temperature Class is T6 Process Temp ≤75°C.
DIMENSIONS
Model L6 FLOTECT
®
Float Switch
Polypropylene oat
Cylindrical stainless steel oat
CSA, IECEx, ATEX conduit enclosure
Round stainless steel oat
With external chamber (tee)
Terminal connections CSA, IECEx, ATEX enclosures
Refer to Certicate No: IECEx DEK 11.0039 for conditions of safe use for IECEx
compliant units.
All wiring, conduit and enclosures must meet applicable codes for hazardous areas.
Conduits and enclosures must be properly sealed. For outdoor or other locations
where temperatures vary widely, precautions should be taken to prevent condensation
inside switch or enclosure. Electrical components must be kept dry at all times.
MAINTENANCE
Inspect and clean wetted parts at regular intervals. The cover should be in place at all
times to protect, the internal components from dirt, dust and weather and to maintain
hazardous location ratings. Disconnect device from the supply circuit before opening
to prevent ignition of hazardous atmosphere. Repairs to be conducted by Dwyer
Instruments, Inc. Units in need of repair should be returned to the factory prepaid.
Ø1 [25.40] x 2 [50.80]
LONG FLOAT
1 MALE NPT
2-7/8 [73.03]
1-1/16
[26.99]
6-1/2 [165.10]
Ø1-1/16 [26.99]
3/4 MALE
NPT CONDUIT
CONNECTION
Ø1 [25.40]
1 MALE NPT
1-3/4 [44.45]
3/4
[19.05]
6 [152.40]
Ø1-1/16 [26.99]
3/4 MALE NPT
CONDUIT
CONNECTION
3-5/64
[78.18]
1-9/64
[28.97]
2 [50.80] HEX
8-9/16 [217.49]
Ø1-1/16 [26.99]
3/4 MALE NPT
CONDUIT
CONNECTION
1 FEMALE NPT TYP 2 PLACES
Ø1
[Ø25.40]
FLOAT
1 MALE NPT
1-27/32
[46.83]
1-1/16
[26.99]
6-1/2 [165.10]
Ø1-1/16 [Ø26.99]
3/4 MALE
NPT CONDUIT
CONNECTION
3-1/2 [88.90]
4-3/8 [111.13]
Ø3-11/32
[84.93]
4-1/4 [107.95]
CLEARANCE FOR
COVER REMOVAL
2-15/16
[74.63]
25/32
[19.86]
Ø3-3/8
[85.73]
3/4 FEMALE NPT CONDUIT
CONNECTION TYP 2 PLACES
SPDT DPDT
To prevent ignition of hazardous atmospheres, disconnect the
device from the supply circuit before opening. Keep assembly
tightly closed when in use.
CAUTION