Datasheet
LEVEL SWITCHES
28
LEVEL
SWITCHES
www.gems-sensors.co.uk
SINGLE POINT
Single level switches LS-1900, LS-1900T, LS-1950E, LS-74780
LS-1900 LS-1900T LS-1950 LS-74780
Materials
Stem Brass or S Steel PTFE S Steel CPVC
Float Buna N PTFE S Steel CPVC
Operating pressure 10 bar 3 bar 30 bar 1 bar
Temperature: -40°C to +80 °C Water +150°C +150°C +80°C
(Note: PVC cable +110°C Oil
Limited to +80°C Ambient) Hi-temp. version - Fly lead: +200°C
Depth of immersion
at a density of 1 ~19 mm ~ 34 mm ~ 30 mm ~ 28 mm
Min. specific gravity
of the liquid 0.55 g/cm3 0.80 g/cm3 0.75 g/cm3 0.85 g/cm3
Type of reed switch SPST 100 VA; SPDT 20 VA SPST 100 VA; SPDT 20 VA SPST 100 VA; SPDT 20 VA SPST 20 VA
Electrical connection Fly lead: AWG 20 FEP Fly lead: AWG 20 FEP Fly lead: AWG 20 FEP Fly lead: AWG 18 PVC
(Length approx. 1m) Cable: 0.34mm2 PVC Cable: 0.5mm2 silicone Cable: 0.5mm2 silicone* (Length appr. 0.6m)
Cable: 0.34mm2 PVC
Hi-temp. version - AWG 18 PTFE
Mounting thread 1/4" NPT*; -G 1/4 G 1/4 G 1/4 1/4" NPT
Protection rating IP64 IP64 IP64 IP64
Hi-temp IP60
Weight approx. 110 g 120g 125g 65g
Specifications
How to Order
Stem, Float, Mounting Electrical Connection LS-1900 LS-1900T LS-1950E LS-74780
Brass/Buna, NPT, cable 010-2934 NO/NC 010-2936 SPDT
Brass/Buna, NPT, leads 013-5676 NO/NC 010-2575 SPDT
Brass/Buna, G, cable
011-1900 NO/NC
SSteel/Buna, NPT, cable 010-2935 NO/NC 010-2937 SPDT
SSteel/Buna, NPT, leads 013-5682 NO/NC 010-2576 SPDT
SSteel/SSteel, G, cable PVC
011-1950 NO/NC
SSteel/SSteel, G, leads
014-1254 NO/NC 010-3109 SPDT
SSteel/SSteel, G, cable Silicon 010-3457 NO/NC 010-3089 SPDT
SSteel/SSteel, NPT, leads, Hi-Temp 013-6186 NO/NC
SSteel/SSteel, G, leads, Hi-Temp 010-0391 NO/NC
SSteel/SSteel, NPT, cable Silicon 010-2942 NO/NC 010-2943 SPDT
SSteel/SSteel, NPT, leads 012-6717 NO/NC 012-3498 SPDT
PTFE/PTFE, G, cable 010-2697 NO 010-2866 NC
PTFE/PTFE, G, leads 010-3451 NO 010-3450 NC
PTFE/PTFE, G, cable 010-3054 SPDT
PTFE/PTFE, G, leads 010-3452 SPDT
CPVC/CPVC, NPT, leads
74780 NO/NC
ø47
46
74
86
1/4"NPT
(G1/4")
ø12.7
ø52
ø12.7
Hex17
1/4"NPT
(G1/4")
51
74
86
LS-1900T
LS-1900
LS-1950E
LS-74780
With large float displacement,
switch withstands rough
service; is suitable for high
viscosity liquids.
Resists build-up of foreign
material or sticky media. Float
travel remains uninhibited in
viscous or corrosive liquids.
Exceptionally accurate and
rugged for higher temperatures
and in pressurised or corrosive
liquids. For oils, water and
chemicals.
Particularly well suited for rough
service. Ideal for use in chemical
and plating applications.
1/4" NPT
(G1/4")
1/4" NPT
(G1/4")
1/4" NPT
(G1/4")
HEX 17
HEX 17
HEX 16
HEX 17
46
74
86
50
76.5
88
51
74
86
46
75
87.5
Ø12.7
Ø47
Ø55
Ø12.7
Ø52
Ø38
Ø13.5
Standard Products in bold