Level Transmitters, Probes & Gauges

Level Transmitters, Probes, and Gauges provide level measurement based on the height of a material's surface within a container or system. It is a critical parameter in many industrial and environmental processes, ensuring that operations run smoothly and safely. Level measurement can be conducted using a variety of techniques, including mechanical, ultrasonic, radar, and laser sensors, each suited to different application needs based on the material's properties, the measurement environment, and the required accuracy.

Accurate level measurement is vital for process control, maintaining quality, and ensuring safety in industries ranging from chemical manufacturing to water treatment. The choice of level measurement technology is influenced by factors such as the presence of vapors, pressure, temperature, and the physical and chemical properties of the material. Modern level measurement solutions offer versatility and precision, facilitating efficient process management and control. Below, you will find a comprehensive list of our transmitters, probes, and gauges, each engineered to meet the highest standards of quality and reliability.

Types of Level Transmitters, Probes & Gauges

Products

BA - Displacer-Type Level Gauge
BA - Displacer-Type Level Gauge
Maximum Measuring Distance
230 Inches
Fittings
2"...4" ANSI Flange
Accuracy
± 0.2 inch
Media Density
25...125 Lb/Ft3
Max. Pressure
Per Flange Rating
Operating Temperature
-40...480 °F
KPW - Submersible Pressure Transducer
KPW - Submersible Pressure Transducer
Ranges
50 in H20...300 PSIG
Accuracy
± 0.25% FS (Standard), ± 0.125% FS (Option)
Fittings
ABS or Optional SS Weighted Nose Cone
Wetted Parts
316 SS, ABS, Polyurethane
Available Outputs
4-20 mA, 0-5 VDC, 0-10 VDC, 0.5-2.5 VDC
MM - Reed Chain Level Sensor
MM - Reed Chain Level Sensor
Max. Measuring Length
236" (6000 mm)
Max. Pressure
435 PSIG (30 bar)
Max. Temperature
266 °F (130 °C)
Available Wetted Materials
Stainless Steel, PVC, PP, PVDF
Fittings
⅜"...2" NPT, ANSI 1½"...4" Flange
NBK - Magnetic Level Gauge
NBK - Magnetic Level Gauge
Max. Measuring Length
18 ft, Longer with Extended Design
Fittings
½"...1¼" NPT, ½"...2" ANSI Flange
Wetted Materials
316-Ti SS, Titanium
Max. Pressure
Flanged per ASME B 16.5 RF-2009 / NPT to 3600 PSIG
Max. Temperature
750 °F
Options
Resistive Transducer, 4-20 mA Transmitter, Switches, Measuring Scale
NBK-04 - Tank-Top Mounted Level Indicator
NBK-04 - Tank-Top Mounted Level Indicator
Max. Measuring Length
13 Ft.
Fittings
2", 2½", 3", 4" ANSI Flange
Material
316-Ti SS
Max. Pressure
230 PSIG
Max Temperature
250 °F
Options
4-20 mA Analog Transmitter, Switches, Measuring Scale
NBK-M - Economical Level Indicator
NBK-M - Economical Level Indicator
Max. Measuring Length
9.8 Feet
Fittings
½"...1" NPT, ½"...1" ANSI or DIN Flanges
Material
316 SS Tube & Fittings, Titanium Float
Max. Pressure
580 PSIG
Max. Temperature
390 °F (Option Dependent)
Transducer Accuracy
Max. ± 0.04" (with Option "T")
Available Options
Switches, Transmitters, Scales
NEO - Ultrasonic Level Transmitter
NEO - Ultrasonic Level Transmitter
Maximum Range
19 or 39 feet
Dead Band
8 or 18 inches
Fittings
2" or 3" NPT
Accuracy
± 0.2% of Range
Temp. Range
-31...140 °F or -40...176°F
Pressure Rating
30 PSI
Output
4-20 mA, 2-Wire
NGM - Guided Wave Radar Level Transmitter
NGM - Guided Wave Radar Level Transmitter
Measuring Range
Liquids up to 65 Feet
Fittings
3/4" NPT, G 3/4, ANSI Flange 1½"...4", DIN Flange DN40...DN100
Wetted Parts
St. Steel, PTFE
Operating Pressure
-14.5...580 PSIG
Media Temperature
-320...480 °F
Accuracy
± 3 mm or 0.03% of Measured Value
Power Supply
12-30 VDC, 4-Wire
Output
4-20 mA, PNP Switching Output
NGR - Guided Wave Radar Level Transmitter
NGR - Guided Wave Radar Level Transmitter
Probe Length
4"...13'feet
Maximum Pressure
145 PSIG
Media Temperature
-4 °F...212 °F
Wetted Parts
316L St. Steel, PTFE
Output Measurement
4-20 mA Continuous, Transistor Switch
NMC - Capacitive Level Transmitter for Liquids
NMC - Capacitive Level Transmitter for Liquids
Probe Length Range
11" to 157"
Max. Pressure
435 PSIG (30 Bar)
Max. Media Temperature
Up to 390 °F (200 °C)
Input Power
18...36 VDC, 24 VAC, 110 VAC, 230 VAC, 50/60 Hz
Output
4-20 mA, 2-wire
NML - Float Level Transducer
NML - Float Level Transducer
Max. Measuring Length
96"
Float Material
316 SS or NBR
Max. Pressure
800 PSIG
Max. Media Temperature
250 °F
Resolution
± 0.25" (6.5 mm)
Electrical Protection
NEMA 4/IP65 or NEMA 4X/IP66
NML-308 Liquid Level Transducer
NML-308 Liquid Level Transducer
Measuring Length
6"...48"
Resolution
± 0.25 in.
Fittings
1...1/4" or 1...1/2" NPT
Fitting Material
PE, PP, PVC or PTFE
Max. Operating Temperature
140...250 °F (Material Dependent)
Max. Pressure
25 PSIG
Protection
NEMA 4X/IP65
Input Voltage
12–32 VDC
Output
4–20mA 2-wire, 0–5 VDC 3-wire, 0–10 VDC 3-wire
NML-310 Liquid Level Transducer
NML-310 Liquid Level Transducer
Measuring Length
12...108"
Resolution
± 0.4"
Fittings
2" NPT Male or 2", 2.5", 3", 4" ANSI Flange
Fitting Material
PE, PP, PVC or PTFE
Max. Operating Temperature
140...250 °F (Material Dependent)
Max. Pressure
40 PSIG
Protection
NEMA 4X/IP65
Input Voltage
12–32 VDC
Output
4–20mA 2-wire, 0–5 VDC 3-wire, 0–10 VDC 3-wire
NMT - Magnetostrictive Level Meter
NMT - Magnetostrictive Level Meter
Measuring Length
12...157 Inches
Fittings
2" NPT or G2
Wetted Material
Stainless Steel
Max. Pressure
145 PSIG
Media Temp. Range
-4...158 °F
Accuracy
± 0.04" (± 1 mm)
Output
4-20 mA
NRF - Capacitance Level Transmitter
NRF - Capacitance Level Transmitter
Fittings
3/4" NPT, 1-1/2" or 2" Tri-Clamp®
Accuracy
± 1% of Span
Repeatability
± 0.1% of Span
Output
4-20 mA
Max. Pressure
500 PSIG
Media Temperature Range
-100...350 °F
Rigid Probe
Up To 20 Feet
Flexible Probe
Up To 200 Feet
Fittings
316 Stainless Steel or PTFE
Probe
Fully PFA Clad or 316 SS
NRF-1F - Capacitance Level Probe for Low-Dielectric Liquids
NRF-1F - Capacitance Level Probe for Low-Dielectric Liquids
Fittings
¾", 1½" NPT
Accuracy
± 1% of Span
Repeatability
± 0.1% of Span
Output
4-20 mA
Max. Pressure
100 PSIG @ 77°F / 50 PSIG @ 212°F / 14.5 PSIG @ 350°F
Media Temperature Range
-100...350 °F
Maximum Length
10 Feet
Fittings
316 Stainless Steel
Probe
Fully PFA Clad or 316 SS w/PTFE Spacers
NRF-1W - Flexible Cable Water Well Level Transmitter
NRF-1W - Flexible Cable Water Well Level Transmitter
Accuracy
± 1% of Span
Repeatability
± 0.1% of Span
Max. Length
1000 Feet (300m)
Standard Fitting
3/4” NPT (316 SS)
Cable
PFA-clad 3/32" Diameter SS Cable
Weight
316 SS
Process Temp. Range
-100...350 °F
Ambient Temp. Range
-40...160 °F
Max. Pressure (SS Fitting)
100 PSIG @ 70 °F, 50 PSIG @ 300 °F, 14 PSIG @ 350 °F
NRF-2, NRF-3 - Capacitance Level and Temperature Transducer
NRF-2, NRF-3 - Capacitance Level and Temperature Transducer
Fittings
3/4" NPT, 1-1/2"...3" Tri-Clamp®
Level Accuracy
± 1% of Span
Level Repeatability
± 0.1% of Span
Output
4-20mA Outputs for Level and Temperature or 4-20mA for Level and Pt-100 for Temperature
Max. Pressure
500 PSIG
Media Temperature Range
-58...392 °F
Maximum Length
12 Feet
Wetted Materials
316 Stainless Steel, PTFE, PFA
Probe
Fully PFA-clad or 316 SS
NTB - Deep-Well Level Probe
NTB - Deep-Well Level Probe
Measuring Range
0...1 to 0...200 mWC
Wetted Materials
SS, Polyurethane, FPM
Max. Pressure
3x Max. Range
Max. Temperature
140 °F
Max. Cable Length
300 m
Ingress Protection
IP68
Linearity
± 0.25%
NUS-4 - Ultrasonic Level Transmitter
NUS-4 - Ultrasonic Level Transmitter
Measuring Range
Liquids up to 80 feet
Fittings
1-1/2", 2" NPT, 3",5",6" ANSI Flange
Max. Pressure
40 PSIG
Max. Temperature
194 °F
Power Supply
12...36 VDC
NUS-7 - Ultrasonic Level Transmitter for Liquids
NUS-7 - Ultrasonic Level Transmitter for Liquids
Measuring Range
Liquids up to 20 Feet
Accuracy
± 0.2% of Reading + 0.05% of Full Scale
Wetted Material
PP or PVDF
Maximum Pressure
40 PSIG
Maximum Temperature
194 °F
Fittings
2" NPT, G 2
Outputs
4-20 mA HART®, Relay
NZJ - Micro Bypass Level Indicator
NZJ - Micro Bypass Level Indicator
Installation Length
4"...22"
Maximum Pressure
230 PSIG
Maximum Temperature
210°F
Maximum Viscosity
50 cSt
Wetted Materials
Stainless Steel (304/316) / Aluminum, NBR, FKM, EPDM, or PTFE Seals