Datasheet

LEVEL SWITCHES
27
LEVEL
SWITCHES
www.gems-sensors.co.uk
Single level switches LS-77700, LS-1700, LS-1750E, LS-1800
ø8
32
G1/8"
45
53
ø8
LS-1750E
LS-1700
LS-1800
LS-77700 - Bent Stem
These units perform in liquids
with specific gravities as low as
.45; switches protrude into tank
less than 75mm.
Offer broad chemical
compatibility for general
purpose use. Also ideal for oils
and water.
Rugged construction suitable for
most corrosive liquids, and for
high temperatures and pressures.
Intermediate in size, LS-1800
switches provide long life and
dependability to meet a broad
range of requirements.
Buna 25
S Steel 38
Buna N
Float
24
83
45
1/8" NPT
(G1/8")
HEX 13
HEX 14
HEX13
(HEX14)
1/8" NPT
(G1/8")
G 1/8"
24
10
38
32 45 53
45 72 80
53
Ø25
Ø27
Ø11
30mm
Ø8
12.7
1/8" NPT
or 3/8"
UNF with
nut
Ø8
LS-77700 LS-1700 LS-1750E LS-1800
Materials
Stem and mounting
Brass or S Steel Brass or S Steel S Steel Brass or S Steel
Float S Steel or Buna N Buna N or PTFE S Steel Buna N
Operating pressure 10bar 10 Bar 20 bar 10 bar
7 bar S Steel Float 70 bar PTFE Float
Temperature
-40°C to +80°C Water +80°C Water +150°C +80°C Water
(Note: PVC Cable +110°C Oil +110°C Oil +110°C Oil
Limited to +80°C Ambient) +150°C S Steel Float +100°C PTFE
Depth of immersion at a Buna N: 9mm Buna N: 9mm 21mm 24mm
density of 1 S Steel: 15mm PTFE: 13mm
Minimum specific gravity Buna N: 0.45 Buna N: 0.45 0.85 0.7
of the liquid S Steel: 0.7 PTFE: 0.85
Type of reed switch SPST 20 VA SPST 50 VA SPST 50 VA SPST 100 VA
SPDT 20 VA
Electrical connection 22 AWG 0.6m L., Teflon® Lead wires Fly lead: AWG 20 FEP Fly lead: AWG 20 FEP Fly Lead: AWG 20 FEP
(Length approx. 1m) Cable: 0.34 mm2 PVC Cable: 0.34 mm2 PVC Cable: 0.34 mm2 PVC
Mounting thread 1/8" NPT 1/8" NPT 1/8" NPT
3/8" UNF with nut G 1/8 G 1/8 G 1/8
Protection rating IP64 IP64 IP64 IP64
Weight approx 150g 30g 50g 80g
Specifications
How to Order
Stem, Float, Mounting Electrical Connection LS-77700 LS-1700 LS1750E LS-1800
Brass/Buna, NPT, cable 010-2921 NO/NC 010-2930 NO/NC 010-3011 SPDT
Brass/Buna, NPT, leads 118125 010-1701 NO/NC 013-5651 NO/NC 013-0272 SPDT
Brass/Buna, G, cable
011-1700 NO/NC 011-1800 NO/NC
SSteel/Buna, NPT, cable 010-2922 NO/NC 010-2931 NO/NC 010-3013
SSteel/Buna, NPT, leads 010-1702 NO/NC 013-5657 NO/NC 012-4367 SPDT
SSteel/PTFE, NPT, leads 012-6791 NO 012-7980 NC
SSteel/PTFE, NPT, cable 010-2924 NO 010-2923 NC
Brass/Buna, 3/8" UNF, leads 118127
SSteel/SSteel, 3/8" UNF, leads 117716
SSteel/SSteel, G, cable PVC
011-1750 NO/NC
SSteel/SSteel, G, leads 010-0340 NO/NC
SSteel/SSteel, G, cable Silicon 010-0554 NO/NC
Standard Products in bold
SINGLE POINT
● Consult factory for De-min water applications