
NON-CONTACT LINEAR 
DISPLACEMENT SENSORS
12, 18 AND 30 mm HOUSINGS
LD701 
Series
Starts at
$
225
All models 
shown larger 
than actual size.
LD701-1/2, $225.
LD701-2/5, $245.
⻬ Inductive Technology for
Sensing Metal Targets
⻬ Insensitive to Dust, Dirt,
and Oils—Ideal for 
Industrial Applications
⻬ Compact Design 
⻬ IP67 Protection Rating
Non-contact linear sensors have an 
analog output that is proportional to 
the damping target distance. Their 
compact yet sturdy design makes 
them suitable for industrial, robotics, 
and laboratory use.
These sensors use inductive 
technology, which means they can 
sense any metal target. The sensing 
distance, however, is influenced 
by the metal target. Ranges are 
calibrated using a standard square 
target. The target is mild steel 
(Fe 360), 1 mm (0.04") thick. 
The side lengths are the larger of 
either the sensor’s face diaphragm 
or 3 times the sensing distance.
LD701-5/10, $290.
Sensing distances are influenced by 
metals other than mild steel. The 
“Correction Factors” chart, shown 
below, shows the reduction that 
occurs when brass or other target 
metals are used. For example, if the 
target were brass, the LD701-1/2 
would sense 0.5 to 1 mm 
(0.02 to 0.04").
The voltage output generated is 
directly linear to the distance being 
measured. The output can be read 
by panel meters, recorders, computer 
boards, or data loggers, all of which 
are available from OMEGA®.
SPECIFICATIONS
Excitation: 14 to 30 Vdc @ 20 mA;
unregulated, reverse polarity and 
short circuit protected
Output: 1 to 9 Vdc 
Output Load: 20 mA max
J-41
Repeatability: 0.01 mm (0.0004") 
Compensated Temperature:
0 to 60°C (32 to 140°F)
Total Thermal Effects: 1µm/°C/mm 
Housing: Nickel-plated brass 
Electrical Connection: 1.8 m (6'), 
3-conductor, 22 AWG pigtail leads 
(20 AWG for 30 mm)
CORRECTION FACTORS 
MATERIAL APPROX.
Mild steel 1.0 
Stainless steel 0.75 
Brass 0.50 
Aluminum 0.40 
Copper 0.35

NON-CONTACT LINEAR DISPLACEMENT SENSORS
LD701-5/10, $290, shown smaller than actual size, with MBL-18/30, 
mounting bracket, $10, and DP25B-E, meter, $245, visit omega.com/dp25b.
Dimensions: mm (in)
MODEL NO.  THREAD A NUT B  CD
LD701-1/2 M12x1 SW17 51  10 
LD701-2/5 M18x1  SW24 65  10 
LD701-5/10 M30x1.5  SW36 60  10 
Wiring: brown +exc; black +out; blue common.
(2.01) (0.39)
(2.55) (0.39)
(2.36) (0.39)
DISPLACEMENT
J
AVAILABLE FOR FAST DELIVERY!
To Order (Specify Model Number)
MODEL LD701-1/2 LD701-2/5 LD701-5/10
PRICE $225 $245 $290 
RANGE mm (in) 1 to 2 (0.04 to 0.08) 2 to 5 (0.08 to 0.19) 
REPEATABILITY ±10 µm (0.4 µin) ±10 µm (0.4 µin) ±10 µm (0.4 µin) 
LINEARITY ±4% ±2% ±4% 
SWITCHING 1000 Hz 1000 Hz 500 Hz
FREQUENCY 
(-3 dB)
HOUSING SIZE 12 mm (0.47") 18 mm (0.71") 30 mm (1.2") 
COMPATIBLE 
METERS*
ACCESSORIES
MODEL NO. PRICE DESCRIPTION
MBL-8/12 $10 Mounting bracket for LD701-1/2 
MBL-18/30 10 Mounting bracket for LD701-2/5 or LD701-5/10
Comes complete with operator’s manual.
* See section D for compatible meters. 
Ordering Example: LD701-1/2, non-contact displacement sensor with 1 to 2 mm 
(0.04 to 0.08") range, $225.
Recommended Reference Book:
Measurement Instrumentation and Sensors Handbook,
See Section Y For Additional Books
DP25B-E, DP41-E, DP3002-E, DP24-E
5 to 10 (0.19 to 0.39)
EE-2590, $210
J-42

One Omega Drive | Stamford, CT 06907 |  1-888-TC-OMEGA (1-888-826-6342) |  info@omega.com 
www.omega.com
UNITED KINGDOM
www. omega.co.uk
Manchester, England
0800-488-488
UNITED STATES
www.omega.com
1-800-TC-OMEGA
Stamford, CT.
CANADA
www.omega.ca
Laval(Quebec) 
1-800-TC-OMEGA
GERMANY
www.omega.de
Deckenpfronn, Germany
0800-8266342
Karviná, Czech Republic
FRANCE
www.omega.fr
Guyancourt, France
088-466-342
CZECH REPUBLIC
www.omegaeng.cz
596-311-899
BENELUX
www.omega.nl
Amstelveen, NL
0800-099-33-44
More than 100,000 Products Available!
Temperature
Calibrators, Connectors, General Test and Measurement 
Instruments, Glass Bulb Thermometers, Handheld Instruments 
for Temperature Measurement, Ice Point References, 
Indicating Labels, Crayons, Cements and Lacquers, Infrared 
Temperature Measurement Instruments, Recorders Relative 
Humidity Measurement Instruments, RTD Probes, Elements 
and Assemblies, Temperature & Process Meters, Timers and 
Counters, Temperature and Process Controllers and Power 
Switching Devices, Thermistor Elements, Probes and 
Assemblies,Thermocouples Thermowells and Head and Well 
Assemblies, Transmitters, Wire
Flow and Level
Air Velocity Indicators, Doppler Flowmeters, Level 
Measurement, Magnetic Flowmeters, Mass Flowmeters, 
Pitot Tubes, Pumps, Rotameters, Turbine and Paddle Wheel 
Flowmeters, Ultrasonic Flowmeters,  Valves, Variable Area 
Flowmeters, Vortex Shedding Flowmeters
pH and Conductivity
Conductivity Instrumentation, Dissolved Oxygen 
Instrumentation,  Environmental Instrumentation, pH 
Electrodes and Instruments, Water and Soil Analysis 
Instrumentation
Data Acquisition
Auto-Dialers and Alarm Monitoring Systems, 
Communication Products and Converters, Data 
Acquisition and Analysis Software, Data Loggers 
Plug-in Cards, Signal Conditioners, USB, RS232, RS485 
and Parallel Port Data Acquisition Systems, Wireless 
Transmitters and Receivers
Pressure, Strain and Force
Displacement Transducers, Dynamic Measurement 
Force Sensors, Instrumentation for Pressure and Strain 
Measurements, Load Cells, Pressure Gauges, Pressure 
Reference Section, Pressure Switches, Pressure Transducers, 
Proximity Transducers, Regulators,  
Strain Gages, Torque Transducers, Valves
Heaters
Band Heaters, Cartridge Heaters, Circulation Heaters,  
Comfort Heaters, Controllers, Meters and Switching 
Devices, Flexible Heaters, General Test and Measurement 
Instruments, Heater Hook-up Wire, Heating Cable 
Systems, Immersion Heaters, Process Air and Duct,  
Heaters, Radiant Heaters, Strip Heaters, Tubular Heaters
click here to go to the omega.com home page