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LF
datasheet
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Operating Manual
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Operating Manual
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Operating Manual
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Specifications
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APG LF Specifications

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LF - Miniature Liquid Level Sensors
APG
The LF Miniature Liquid Level sensors are designed for reliable operation in small tanks and
containers. Their rugged design and multiple congurations make them the perfect solution for OEM
and large volume applications.
Features
• Compact size
• Low cost
• Reliability/long switch life
• Can be used in a wide range of liquids
Automation Products Group, Inc. www.apgsensors.com
tel. 888.525.7300 sales@apgsensors.com
LF General Specications and Options
APG
LFE11P-0 LFE11P-1 0-R11EFL LFE11R-1 0-P21EFL LFE12P-1 0-R21EFL LFE12R-1
11.8 300
0.47 12
1.69 43
Ø0.98
25
0.59 15
0.24 6
Ø0.31
8
0.67 17
*
G 1/8
Series LFE
Model LFE11P - 0A or 0B
LFE12P - 0A or 0B
Switch action for the LFE is nonreversible.
Select A (NC) or B (NO)
Performance
Pressure Rating 7 psi (0.5 bar) 145 psi (10 bar)
Minimum S.G. 0.9 0.7
Environmental
Operating Temp. 14º to 194ºF (-10º to 90ºC)
Liquids Water Hydraulic/lubricating oil
Electrical
Switch Rating (Model) 0A/0B 1A/1B
Max Capacity 10 VA 50 VA
Nominal Current 0.1 A 0.17 A
Max Voltage 100 VAC 300 VAC
Life Expectancy 10
Lead Wires #22 AWG, 11.8 or 39.4 in. (300 or 1000 mm)
7
(# of actuations)
LFE11R - 1A or 1B
Physical
Material
Stem Polypropylene
Float Polypropylene Buna
Retainer 316L SS
Mounting Vertical
G 1/8
0.59 15
LFE11P / LFE11R LFE12P
11.8
0.31 8
8
*
1.30
300
33
0.47 12
G 1/8
0.59 15
Ø0.98
25
0.24 6
Ø0.31
Ø0.98
25
0.67 17
0.24 6
Ø0.31
8
11.8 300
0.47 12
*
1.69 43
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LF General Specications and Options
APG
LFP
LFP-V-2A LFP-V-2F LFP-V-2PG LFP-VE-B1
22458 22091 22094 22917-0049
11.81 300
2.6 66
G 1/8
Ø0.98
25
0.75 19
0.79 20
0.06
1.5
0.87 22
0.31 8
0.98 25
ON
OFF
Ø0.98
25
11.81 300
2.36 60
G 1/8
0.59 15
0.31 8
0.98 25
0.79 20
0.75 19
0.06
1.5
ON
OFF
0.31 8
Lead Wire
PF 1/8
Float
Stopper
Stem
Ø1.04
26.5
Ø0.28
7
11.8 300
Nut
ON
0.81
20.5
0.20 5
0.59 15
1.73 44
0.98 25
LFP
11.81 300
2.6 66
G 1/8
Ø0.98
25
0.75 19
0.79 20
0.06
1.5
0.87 22
0.31 8
0.98 25
ON
OFF
0.31 8
Lead Wire
PF 1/8
Float
Stopper
Stem
Ø1.04
26.5
Ø0.28
7
11.8 300
Nut
ON
0.81
20.5
0.20 5
0.59 15
1.73 44
0.98 25
0.31 8
Lead Wire
PF 1/8
Float
Stopper
Stem
Ø1.04
26.5
Ø0.28
7
11.8 300
Nut
ON
0.81
20.5
0.20 5
0.59 15
1.73 44
0.98 25
(4)
LFP-H-10
LFPH-3
Series LFP
Model LFP-V-2A LFP-V-2F LFP-V-2PG LFP-H-3
Performance
Pressure Rating 145 psi (10 bar) 7 psi (0.5 bar)
Minimum S.G. 0.6 0.9 0.85 0.8
Environmental
Operating Temp. 14º to 194ºF
(-10º to 90ºC)
Liquids Water Corrosive Chemicals Chemicals, food,
Electrical
Max Capacity 50 VA
Nominal Current 0.17 A
Max Voltage 300 VAC/DC
Life Expectancy 10
Lead Wires #22 AWG, 11.8 or 39.4 in. (300 or 1000 mm)
14º to 212ºF
(-10º to 100ºC)
7
14º to 194ºF (-10º to 90ºC)
Water
potable water
(# of actuations)
Physical
Material
Stem Polyacetal PVDF Polypropylene
Float Buna PVDF Polypropylene
Retainer 316L SS PVDF Polypropylene
Mounting Vertical Horizontal
11.81 300
2.6 66
0.98 25
LFP-V-2A LFP-V-2F LFP-V-2PG LFP-H-3
0.87 G 1/8
22
0.31 8
0.96
24.5
OFF
Ø0.98
25
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0.06
1.5
ON
0.55 14
11.81 300
2.36 60
0.98 25
0.31 8
0.59 15
G 1/8
0.75
Ø0.98
19
0.06
1.5
OFF
ON
0.79 20
25
11.81 300
2.6 66
0.98 25
0.31 8
0.87 22
G 1/8
0.79 20
Ø0.98
25
OFF
0.06
1.5
ON
0.75 19
0.96
24.5
0.43
2.3
Ø1.34
34
1.52
38.7
2.15
54.7
G 1/4
11.81 300
0.63
0.28
16
7
0.12
0.31
Ø1.1
3
8
28
ON
OFF
End View
Options
APG
LFP
LFP-HE-P1 LFP-HE-N1 LFP-HE-P2 LFP-HE-N2
22917-0012 22917-0054 22917-0053 22917-0013
Series LFP
Model LFP-HE-P1 LFP-HE-N1 LFP-HE-P2 LFP-HE-N2
Performance
Pressure Rating 7.25 psi (0.5 bar)
Minimum S.G. 0.8
Environmental
Operating Temp. 14º to 175ºF
(-10º to 80ºC)
Electrical
Max Capacity 50 VA / 50W
Max Current 0.5 A
Max Voltage 300 VAC/DC
Life Expectancy 10
Lead Wires #22 AWG, 11.8 or 39.4 in. (300 or 1000 mm)
14º to 230ºF
(-10º to 110ºC)
7
14º to 175ºF
(-10º to 80ºC)
(# of actuations)
14º to 230ºF
(-10º to 110ºC)
Physical
Material
Stem Polypropylene 6-nylon Polypropylene 6-nylon
Float Polypropylene 6-nylon Polypropylene 6-nylon
Retainer Polypropylene 6-nylon Polypropylene 6-nylon
Mounting Horizontal
LFP-HE-P1 / LFE-HE-N1 LFP-HE-P2 / LFE-HE-N2
2.894
73.5
0.98 25
Ø0.59
15
Float
1.38 35
Stem
0.79 20
0.197
0.39
10
Grommet
11.81 300
5
0.197 5
Ø0.59
15
0.98 25
3.562
90.5
1.38 35
0.197 5
0.55 14
0.31
11.81 300
8
0.12 3
Nut
PF 1/4
Lead Wire
Float
Stem
NPT 1/2
Lead Wire
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4
Options
APG
LFS
LFS-V-5G LFS-V-5UN LFS-V-30 LFS-V-50
1/8 NPT
2.24 57
11.8 300
Ø1.1
28
0.59 15
1.06 27
0.19 5
3.62 92
R 1/4
Hex 19
ON
0.55140.24 6
0.47 12
Ø0.54
13.8
1.97 50
1.97 50
Ø1.93
49
R 1/2
Hex 20
ON
2.59 66
1.97 50
4.49 114
Ø0.54
13.8
0.39 10
0.79200.59 15
0.20 5
Ø1.93
49
LFS
LFS-VE-S1 LFS-VE-S2 LFS-VE-S3 LFS-VE-S4
22917-0031 22917-0032 22917-0010 22917-0011
Lead Wire
Stopper
Float
Stem
Nut
PF 1/8
Ø1.1
28
Ø0.31
8
0.20 5
0.20 5
13.78 350
0.59 15
0.67 17
ON
1.06 27
1.7 43
Lead Wire
Stopper
Float
Stem
Nut
PF 3/8
0.31 8
0.24 6
13.78 350
2.95 75
1.38 35
ON
1.89 48
0.79 20
Ø1.97
50
Ø0.51
13
Lead Wire
Stopper
Float
Stem
Nut
PF 3/8
0.31 8
0.24 6
13.78 350
2.95 75
1.38 35
ON
1.89 48
0.79 20
Ø1.97
50
Ø0.51
13
LFS
3.62 92
R 1/4
Hex 19
ON
0.55140.24 6
0.47 12
Ø0.54
13.8
1.97 50
1.97 50
Ø1.93
49
R 1/2
Hex 20
ON
2.59 66
1.97 50
4.49 114
Ø0.54
13.8
0.39 10
0.79200.59 15
0.20 5
Ø1.93
49
R 1/2
Hex 20
ON
2.59 66
1.97 50
4.49 114
Ø0.54
13.8
0.39 10
0.79200.59 15
0.20 5
Ø1.93
49
Series LFS
Model LFS-V-5G LFS-V-5UN LFS-V-30 LFS-VE-S1
Performance
Pressure Rating 290 psi (20 bar)
Minimum S.G. 0.8 0.55 0.8
Environmental
Operating Temp. 14º to 212ºF (-10º to 100ºC) 14º to 248ºF
(-10º to 120ºC)
Liquids Most liquids
Electrical
Max Capacity 50 VA 15 VA 50 VA
Nominal Current 0.17 A 0.06 A 0.5 A
Max Voltage 300 VAC 264 VAC 300 VAC/DC
Life Expectancy 10
Lead Wires #22 AWG
7
(# of actuations)
(300 or 1000 mm)
6
(# of actuations)
10
Silicon
(0.3 mm) (400 mm)
14º to 390ºF
(-10º to 200ºC)
#22 AWG
(350 mm)
Physical
Material
Stem 316L SS 304 SS
Float 316L SS 304 SS
Retainer 316L SS 304 SS
Mounting Vertical
11.81 300
2.24 57
LFS-V-5G LFS-V-5UN LFS-V-30 LFS-VE-S1
Lead Wire
PF 1/8
Nut
0.20 5
Stem
Float
Stopper
0.59 15
1.06 27
0.20
Ø0.54
Hex 19
1.97
13.8
R 1/4
50
11.8
2.24 57
300
0.19
1.06 27
5
0.59 15
Ø1.1
28
1/8 NPT
5
Ø1.10
28
G 1/8
0.65
16.5
0.06
1.5
OFF
ON
0.75 19
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0.55140.24 6
1.97 50
3.62
ON
92
0.47
12
Ø1.93
49
Ø1.1
28
0.20 5
0.59 15
Ø0.31
8
13.78 350
0.67
17
ON
1.06 27
1.7 43
Options
APG
LFS
Lead Wire
Stopper
Float
Stem
Nut
PF 3/8
0.31 8
0.24 6
13.78 350
2.95 75
1.38 35
ON
1.89 48
0.79 20
Ø1.97
50
Ø0.51
13
Lead Wire
Stopper
Float
Stem
Nut
PF 3/8
0.31 8
0.24 6
13.78 350
2.95 75
1.38 35
ON
1.89 48
0.79 20
Ø1.97
50
Ø0.51
13
LFS
LFS-H-10 LFS-H-25S/90
22427 22556
G 1/8
ON
11.8 300
1.85 47
0.59 15
Ø0.31
8
Ø1.10
28
3.35 85
1.06 27
+
1.97500.08 2
Series LFS
Model LFS-VE-S2 LFS-H-10 LFS-H-25S/90 LFS-HE-S2
Performance
Pressure Rating 145 psi (10 bar) 145 psi (10bar) 290 psi (20 bar) 72.5 psi (5 bar)
Minimum S.G. 0.8 0.6 0.8 0.8
Environmental
Operating Temp. 14º to 245ºF
(-10º to 120ºC)
Liquids Chemical, Food,
Electrical
Max Capacity 50 VA
Nominal Current 0.5 A 0.17 A 0.5 A
Max Voltage 300 VAC/DC 300 VAC 300 VAC/DC
Life Expectancy 10
Lead Wires #22 AWG
(350 mm)
14º to 248ºF
(-10º to 120ºC)
Potable Water
7
#22 AWG
(300 mm)
(-10º to 100ºC)
(# of actuations)
14º to 212ºF
14º to 250ºF
(-10º to 120ºC)
#22 AWG
(500 mm)
Physical
Material
Stem 316L SS 304 SS
Float 316L SS 304 SS
Retainer 316L SS 304 SS
Mounting Vertical Horizontal
4.33
2
ON
Ø0.67
17
2.75
110
70
LFS-VE-S2
Lead Wire
0.59 15
13.78
0.20
PF 1/8
Nut
0.20 5
Stem
Float
Stopper
Ø1.1
28
350
5
0.67 17
1.7 43
ON
1.06
Ø0.31
27
8
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6
1.97500.08
3.35 85
0.59 15
2.83 72
+
Ø0.31
8
LFS-H-10
1.46 37
LFS-H-25S/90
1.85 47
1.06
27
Ø1.10
28
R1/2
0.59 15
G 1/8
1.04
26.5
11.8 300
0.31 8
1.85 47
LFS-HE-S2
0.77
0.67 17
19.68 500
19.5
0.078
0.00
8.5
0.31 8
2
Ø0.67
17
11.8 300
Float
NPT 1/2
Lead Wire
Stem
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