Level Switches

KOBOLD USA's Level Switches are designed to provide reliable and precise level control for most industrial applications. They are crucial for monitoring and managing the fill level of liquids and bulk materials in tanks and containers. Our level switch types include float, ultrasonic, and pressure-based mechanisms that ensure accurate and consistent performance for different media and environmental conditions. By integrating our level switches, operators can achieve better process control, enhance safety, and prevent overflows or dry runs, ultimately leading to improved operational efficiency.

Whether you need to monitor water, corrosive liquids, or granular bulk materials, we offer robust and durable solutions. Our level switches seamlessly integrate into many existing systems, providing real-time data and control capabilities. Below, you will find a comprehensive list of our level switch products, each engineered to meet our high standards of quality and reliability.

Types of Level Switches

Products

M - Magnetic Level Switches
M - Magnetic Level Switches
Wetted Materials
Stainless Steel, Brass, PVC, PP, NBR, PVDF
Fittings
G ⅛, G ⅜, G ½ ,G 1, G 1½ G 2, 1" NPT, 1½" NPT, 2" NPT, PG 7 Male, DIN & ANSI Flanges
Connection Box
Aluminum, Polyamide, Polypropylene, ABS
Max. Pressure
1450 PSIG
Max. Temperature
302 °F
NAB - Polypropylene Float Level Switch
NAB - Polypropylene Float Level Switch
Wetted Parts
Polypropylene (PP), Neoprene®
Max. Temperature
185 °F (85 °C)
Max. Pressure
50 PSIG (3.5 BAR)
Max. Switch Rating
250 VAC 50/60 Hz, 20A Resistive/8A Inductive Load
NAS - Bulk Media Level Switch Grain Cereal Silo
NAS - Bulk Media Level Switch Grain Cereal Silo
Operation mode:
By tilting
Important specification:
Only in non ATEX area
Electric characteristics:
250 VAC, 50/60 Hz
Cut-out power:
20 (8) A
Maximum pressure:
3.5 bar
Maximum temperature:
85 °C
Protection index:
IP 68
Housing:
Copolymer polypropylene
Type of cable:
PVC 3X1 mm²
Float weight without cable:
462 g
Cable length:
5 and 10 m
Minimum medium density:
0.3 kg/dm³
Max. grain size:
30 mm
Option:
Ballast weight, loaded resin, 250 g
NCB - Magnetic Float Switches with NBR Float
NCB - Magnetic Float Switches with NBR Float
Fittings
1/8" NPT, 1/4" NPT, PF 1/8" (3/8"...24 UNF)
Wetted Materials
NBR, Brass, 316 St. Steel
Max. Pressure
150 PSIG
Max. Temperature
230°F (in Oil), 180°F (in Water)
Specific Gravity
> 0.55 S.G.
NCG - Large Multipoint Magnetic Float Level Switches
NCG - Large Multipoint Magnetic Float Level Switches
Maximum Length
96"
Fittings
1/2"...2" NPT, 3" ANSI Flange, 1/2" Tube End
Stem/Fittings
316 SS or PVC
Floats
NBR, SS or PP
Electrical Ratings
100 VA SPST (Standard), 20 VA SPDT (Optional)
NCM - Miniature Multipoint Float Level Switch
NCM - Miniature Multipoint Float Level Switch
Maximum Length
48"
Fittings
1/8"...1" NPT, 5/16" Tube End
Stem/Fittings
316 SS or Brass
Floats
316 SS, NBR or Polypropylene
Electrical Ratings
SPST 100 VA Standard
NCP - Magnetic Float Switches for Liquids
NCP - Magnetic Float Switches for Liquids
Max. Pressure
100 PSIG
Max. Temperature
225 °F
Fittings
1/8" NPT or PF ¼
Minimum SG
0.81
NCS - Magnetic Float Switches for Liquids
NCS - Magnetic Float Switches for Liquids
Contact
Reed Switch
Fittings
1/8", 1/4" NPT
Wetted Material
SS
Max. Pressure
400 PSIG
Max. Temperature
300 °F
Liquid Density
> 0.65 SG
NCW - Capacitive Level Switch
NCW - Capacitive Level Switch
Probe Length Range
11" to 157"
Max. Pressure
435 PSIG (30 Bar)
Max. Media Temperature
Up to 392 °F (200 °C)
Input Power
18...36 VDC, 24 VAC, 110 VAC, 230 VAC, 50/60 Hz
Output
Relay Contact
NDT - Static Pressure Level Switch
NDT - Static Pressure Level Switch
Wetted Parts Exposed to Liquid
User-Supplied 1¼" OD Tube
Wetted Parts Exposed to Air Pocket
NBR, Polyamide
Media
Any Compatible, Free-Flowing Liquid
Switchpoint
4" Above the Bottom of User-Supplied Tube
Switch Rating
SPDT, 250 VAC/8A max.
NE - Conductive Level Switch
NE - Conductive Level Switch
Contacts
Up To 6 Contacts via External Relays
Fittings
½" NPT, 1½" NPT Male
Material
SS, Hastelloy®, Titanium w/ Polyolefin or PTFE Cladding
Max. Pressure
440 PSIG
Max. Temperature
Up To 300 °F w/PTFE Cladding
NE-5048 Electrode Relay for Conductive Level Switches
NE-5048 Electrode Relay for Conductive Level Switches
Power Supply
24-240 VAC/DC
Power Consumption
Max. 2 VA / 1.5 W
Response Time
400 ms
Output
1 Potential-Free SPDT Contact
Ambient Temperature
-4...131 °F
Mounting
Quick Mount for DIN Rail 60715
NEC - Heavy-Duty Float Level Switch
NEC - Heavy-Duty Float Level Switch
Wetted Parts
PP Float w/PEC-Clad Cable or Hypalon®-clad PP Float w/PEC-Clad Cable
Max. Temperature
185 °F (NEC), 194 °F (NEC-HY)
Max. Pressure
50 PSIG (NEC), 58 PSIG (NEC-HY)
Switch
SPDT Mechanical (Mercury-Free)
Max. Switch Ratings
250 VAC 50/60 Hz, 16A Resistive Load/6A Inductive
NEH - Cable-Suspended Conductive Level Switch
NEH - Cable-Suspended Conductive Level Switch
Contacts
Up To 6 Contacts via External Relays
Fittings
½" NPT, 1½" NPT Male
Material
SS, Hastelloy®, Titanium, PTFE
Max. Pressure
90 PSIG
Max. Temperature
Up To 300°F w/PTFE Cable
NEK - Compact Conductive Level Switch
NEK - Compact Conductive Level Switch
Compatible Media
For Conductive Liquids Only
Body Material
Polypropylene or PPS
Sensing Electrode Material
316-Ti SS
Fitting
3/4" NPT
Max. Pressure
Polypropylene = 87 PSIG, PPS = 290 PSIG
Max. Temperature
Polypropylene = 140 °F, PPS = 185 °F
Switching Output
PNP or NPN Open Collector or SPDT Relay
Protection Class
IP68
NGS - Heavy Duty Level Switch
NGS - Heavy Duty Level Switch
Contact
1 SPDT Mechanical Switch
Fittings
Square Flange, 2" NPT
Material
316 SS
Max. Pressure
360 PSIG
Max.Temperature
480 °F
Liquid Density
>0.7 g/ml
NIR-9 - Rotating Vane Level Switch for Bulk Media
NIR-9 - Rotating Vane Level Switch for Bulk Media
Fittings
1"...1½" NPT, 110 mm and 200 mm Flange
Max. Media Temperature
392 ºF (NIR-92)
Operating Pressure Range
-7.25...7.25 PSIG
Min. Bulk Media Density
2.37 Lb/ft3
Sensitivity
Adjustable, 3 Settings
Housing
Polyester Coated Aluminum
Switch
SPDT Mechanical
Power Supply
24 VDC, 110 VAC
NKP - Side-Mounted Level Switch
NKP - Side-Mounted Level Switch
Fittings
½" NPT or Bulkhead
Body/Float Material
Polypropylene or PVDF
Max. Pressure
145 PSI
Max. Media Temperature
175 °F (PP), 212 °F (PVDF)
Minimum S.G.
0.6 (PP), 0.95 (PVDF)
Contact
Hermetically-Sealed Reed Switch
Electrical Connection
2-Wire Jacketed Cable, 36" Length
NLP - Hydrostatic Pressure Level Switch
NLP - Hydrostatic Pressure Level Switch
Fittings
1" NPT, G1
Max. Process Temp.
158 °F
Switching Range
Up to 16 ft
Switch Rating
250 VAC 1A
NMF - Level Switch for Dry Bulk Media
NMF - Level Switch for Dry Bulk Media
Contact
1 Mechanical Switch
Fitting
Circular Flange
Membrane
NBR, FPM, SS
Retaining Ring
Galvanized Steel, SS, Aluminum
Max. Temperature
176 °F...390 °F
NSC - Capacitive Level Switch for Bulk Media
NSC - Capacitive Level Switch for Bulk Media
Probe Length Range
118" Max. (Rod), 49 Feet (Cable)
Max. Pressure
7 PSIG (0.5 Bar)
Media Temperature
Up to 176 °F (80 °C)
Minimum Dielectric Constant
1.5
Input Power
18...36 VDC, 24 VAC, 110 VAC, 230 VAC, 50/60 Hz
Output
Relay Contact
NSD - Economical Optical Level Switch
NSD - Economical Optical Level Switch
Suitable Media
Compatible Low-Viscosity, Clear and Non-Coating Liquids
Fitting
3/8" NPT
Body Material
316 SS
Electrical Protection
NEMA 6/IP68
Max. Pressure
550 PSIG
Temperature Range
15°...250 °F
NSE - Stainless Steel Float Level Switch
NSE - Stainless Steel Float Level Switch
Max. Temperature
302 °F
Max. Pressure
87 / 220 PSIG (Model Dependent)
Materials
316 Stainless Steel
Switch
SPDT Reed Switch
Media Density
0.8 S.G. Min.
Cable
6 Ft. (2 m) Silicone-clad Cable
NSM - Polypropylene Tethered Float Level Switches
NSM - Polypropylene Tethered Float Level Switches
Max. Temperature
185 °F
Max. Pressure
45 PSIG
Materials
Polypropylene Float/Neoprene Cable
Switch
SPDT Mechanical Switch
Media Density
0.6 S.G. Minimum
NSP - Polypropylene Tethered Float Level Switches
NSP - Polypropylene Tethered Float Level Switches
Max. Temperature
140 °F (185 °F with Optional Silicone or FEP-clad Cable)
Max. Pressure
15 PSIG (NSP-5101), 30 PSIG (NSP-5201)
Wetted Materials
Polypropylene Float/TPK Cable Standard
Switch
SPDT Mechanical Switch
Float Density
0.6 S.G Min. (NSP-5201), 0.9 S.G. Min. (NSP-5101)
NST - PTFE Tethered Float Level Switches
NST - PTFE Tethered Float Level Switches
Max. Temperature
302 °F
Max. Pressure
15 PSIG
Wetted Materials
PTFE Float / FEP-Clad Cable
Switch
SPDT Reed Switch
Switch Rating
4 to 250 VAC/ VDC, 60 VA, 1 mA to 1 A Max.
Media Density
0.79 S.G. Min.
NSV - Vibrating Level Switches for Bulk Media
NSV - Vibrating Level Switches for Bulk Media
Fittings
1½" NPT, G-1½ Male
Wetted Material
303 SS
Max. Temperature
176 °F
Minimum Material Density
3.75 Lb/ft3
Standard Probe Length
9" (230 mm)
Maximum Probe Length
118"
Supply Voltage
24, 110, 230 VAC 50/60 Hz or 18...36 VDC
Switch
SPDT Relay Contact, Max. 250 VAC, 1A
NV - Side Mount Level Switch
NV - Side Mount Level Switch
Contact
1 SPST Reed Contact, cCSAus Approved
Fitting
3/4" NPT
Wetted Material
Ni-plated Brass, SS
Max. Pressure
232 PSIG
Max. Temperature
230 °F
Liquid Density
> 0.7 SG
NVI - Vibrating Level Switch for Powders & Granulated Solids
NVI - Vibrating Level Switch for Powders & Granulated Solids
Fittings
1½" NPT, G-1½
Wetted Materials
316-Ti Stainless Steel
Maximum Pressure
360 PSIG
Media Temperature Range
-22°...230°F (Standard), -22°...320°F (Optional)
Switch Contact
1 SPDT Relay, 250 VAC/8A Max.
NWP - Plastic Vibrating Fork Level Switches
NWP - Plastic Vibrating Fork Level Switches
Wetted Parts
Glass-Filled PPS
Temperature Range
-40...176 °F
Maximum Pressure
150 PSIG @ 25 °C
Switch Type
SPST Relay, 60 VAC/VDC @ 1 Amp
NWS - Vibrating Level Switches
NWS - Vibrating Level Switches
Contact
1 Electronic Switch
Fittings
¾" NPT, 1" NPT, 1-1/2" or 2" Tri-Clamp, 1" or 2" ANSI Flange
Material
316 SS
Max. Pressure
650 PSIG @ 265 °F
Max. Temperature
265 °F
Viscosity
0.5...5000 cSt
OPT - Optical Level Switch
OPT - Optical Level Switch
Switch Output
NPN or PNP Open-collector
Fittings
½" NPT, G ½, M14 Bulkhead
Material
Polysulfone, Polypropylene, 304 SS
Max. Pressure
145 PSIG
Max. Temperature
176 °F
PLS - Pendulum Level Switch for Bulk Solids
PLS - Pendulum Level Switch for Bulk Solids
Measuring Principle
Pendulum
Available Rod Lengths
up to 78.7" (2000 mm)
Switch
SPDT Mechanical Switch, Max. 250 VAC / 15 A
Max. Media Temperature
176 °F
Max. Operating Pressure
7 PSIG
Mounting Position
Vertical, Top of Bin
RFS - Side-Mounted Level Switch
RFS - Side-Mounted Level Switch
Fitting
1/2" NPT, G 1/2
Contact
N/O or N/C Reed Switch
Electrical Connection
DIN Plug, M12 Plug, or Aluminum Housing, Aluminum Housing (ATEX)
Wetted Material
304 or 316L Stainless Steel
Max. Pressure
145 PSI
Media Temperature Range
-14...248 °F
Minimum S.G.
> 0.8 S.G.