Schreiber SM210 – Miniature LVDT sensor Ø10 mm

Manufacturer: Schreiber Messtechnik
Category: Displacement, LVDT Unamplified, SENSORS, LVDT Sensors

The Schreiber SM210 is a miniature linear displacement LVDT sensor, manufactured in Germany, with a body of Ø10 mm and careers of 5, 10, 15 and 20 mm. Its inductive system with a half-bridge and moving core allows for the measurement of linear movements in compact mechanisms, actuators, dimensional control tools, and test benches.

It offers standard linearity less than 0.5% and versions of 0,25 % For 5, 10, and 15 mm strokes. Available with a moving core or with feeler and return spring, as well as with M12 connector or different cable options.

The SM210 is an inductive sensor without integrated electronics. With the Schreiber SM10 or SM12 conditioners, integration into PLCs and data acquisition systems is possible via outputs 4–20 mA, 0–10 V or ±10 V, depending on the chosen module. GUEMISA is a distributor of Schreiber Messtechnik in Spain and offers advice on selecting the sensor and its electronics.

Advantages and applications of the SM210 miniature LVDT

Compact format: Body only 10 mm in diameter, suitable for confined spaces.
Inductive measurement without sliding electrical contact: suitable for repetitive and highly reliable measurements.
Strokes of 5 to 20 mm: selection according to the useful displacement of the machine.
Version with probe: for measuring thicknesses, heights, positions and dimensional comparisons.
External electronics: It allows the sensor to be placed near the movement and the conditioner in the electrical panel.
Applications: automation, servomechanisms, stroke control, industrial metrology and mechanical testing.

Operation and inductive measurement principle of the LVDT

The SM210 uses two inductive coils in a configuration of half bridge and a movable Ni-Fe alloy core. The displacement of the core modifies the inductance of the assembly; an external electronic module converts the measurement into a signal proportional to the position.

This is a solution from the LVDT/inductive displacement sensor family, used for stroke measurement, positioning, and dimensional controls. GUEMISA assists in selecting compatible electronics for the sensor's inductive signal.

Dimensions, moving core, and version with probe

The body has Ø10 mm (flat tolerance 0/−0.04 mm). The moving core rod is Ø3 mm and has an M2 threaded end. Variants .T They incorporate a contact probe with a spring of approximately 2 N.

Body length L2 For the standard version: 40 mm for strokes of 5 and 10 mm; 50 mm for 15 and 20 mm. In versions with a probe, L2 is 50 mm for 5 and 10 mm and 60 mm for 15 and 20 mm. For machining supports and verifying core dimensions, it is advisable to use the drawing of the selected version.

Schreiber offers mounting clamps SM906.202 and SM906.203, with housing for the 10 mm body.

Electronics and connection of the SM210 to PLC: 4–20 mA, 0–10 V and ±10 V

The SM210 sensor requires external excitation and conditioning. Schreiber options include SM101 (0–20 mA), SM103 (4–20 mA), SM105 (±10 V) and modules SM12 with current or voltage outputs, depending on the variant. This allows the sensor to be adapted to analog inputs of PLCs, recorders, or test equipment.

M12 × 1 connector (S version)

Pin	Sign
1	WP
2	No connection
3	WM
4	MS

Wired versions

White: WM · Brown: MS · Green: WP. Flat, radial, and PUR cable options are available depending on the part number. The conditioner's power supply depends on the chosen module; this should not be confused with a direct 24V power supply to the passive sensor.

Races, linearity classes and SM210 references

Standard references are distinguished by their stroke and linearity class. The code .1 corresponds to the option of 0,25 % and the code .2 to the 0,5 %. The standard 20 mm version is offered in class 0.5%.

Career	Linearity 0.25 %	Linearity 0.5 %
5 mm	SM210.5.1	SM210.5.2
10 mm	SM210.10.1	SM210.10.2
15 mm	SM210.15.1	SM210.15.2
20 mm	—	SM210.20.2

Execution options

Suffix	Description
.S	M12 × 1 connector.
.K	Output via flat cable.
.L / .LP	Radial cable / PUR radial cable.
.T	Probe with return spring.
.AND	Variant for series ≥100 units with accuracy and sensitivity tolerance of 1%; not equivalent to the standard execution.
.X	Special execution of the route or calibration, as per the request.

Example: SM210.10.2.ST = 10 mm stroke, 0.5% linearity, spring-loaded probe and M12 connector. Option combinations must be confirmed for the specific reference.

Environmental protection, mechanical resistance and selection

According to the Spanish SM21x technical data sheet, the version with an M12 connector is specified as IP67 and the version with wired output as IP68. The ranges indicated on that form are -20…+85 °C with connector and -20…+105 °C with cable.

The sensor is specified for 20 g RMS of vibration and 250g SRS shock. The drift of zero with temperature is less than 0.005 %/°C.

To select a specific model or to study a replacement LVDT, GUEMISA checks the stroke, geometry, type of fixing, linearity, required output, connection and working conditions.

Industrial applications and selection of alternatives

The Schreiber SM210 is designed for stroke measurement of small actuators, position feedback, parts inspection, metrology tools and force-displacement tests. The movable core format is integrated into linear mechanisms; the probe format allows working directly on a surface.

If you need the same range of travel with integrated electronics, You can also study the Schreiber SM34. For other courses and formats, please consult the Schreiber Messtechnik range at GUEMISA.

Frequently Asked Questions about Schreiber SM210

What races are available on the LVDT Schreiber SM210?

The nominal strokes of the SM210 are 5, 10, 15 and 20 mm. The body diameter is 10 mm in the standard versions.

What is the linearity of the Schreiber SM210?

Standard linearity is less than 0.5%. Travels of 5, 10, and 15 mm can be ordered with an optional 0.25%. The standard 20 mm version is offered with 0.5% linearity.

Can a 4–20 mA or 0–10 V signal be obtained for a PLC?

Yes. The SM210 works with external electronics: the SM103 allows 4–20 mA output, while the SM12 family offers configurations with 0–10 V and other signals. The sensor itself does not directly provide these outputs.

Does the SM210 exist with a probe and spring?

Yes. The .T option incorporates a spring-return probe tip, with an approximate force of 2 N, for dimensional control and contact measurements.

What level of protection does the SM210 offer?

Spanish technical documentation specifies IP67 with M12 connection and IP68 for wired versions. The appropriate connection must be chosen according to the installation conditions.

Is it possible to study the replacement of an existing LVDT with an SM210?

Yes. GUEMISA can study the equivalence in terms of travel, dimensions, mounting, performance and electrical conditioning, and propose the appropriate Schreiber sensor.

Where can I buy the Schreiber SM210 sensor in Spain?

GUEMISA supplies Schreiber Messtechnik sensors and advises on selection of travel, linearity, moving core or probe and conditioning electronics.

Schreiber SM210 in Spain: selection and supply GUEMISA

GUEMISA We offer supply and technical advice for the SM210, its installation and signal conditioning. Please tell us the travel, linearity, core or probe version, connection type and PLC signal to identify the appropriate reference.

Download Schreiber SM21/SM210 technical sheet (PDF) · View Schreiber LVDT sensors at GUEMISA

Properties

Specification	Schreiber SM210
Sensor type	Miniature LVDT / Inductive Linear Displacement Sensor
Integrated electronics	No; it requires external conditioning
Nominal travel distances	5 / 10 / 15 / 20 mm
Body diameter	Ø10 mm
Diameter tolerance according to drawing	Ø10 / –0.04 mm
Standard linearity	<0.5 %
Linearity option	0.25 % for 5, 10 and 15 mm strokes
20 mm travel	Linearity 0.5 %
Sensitivity 5 / 10 mm	400 mV/mm (±10 %)
Sensitivity 15 / 20 mm	300 mV/mm (±10 %)
Protection rating with M12	IP67
Degree of protection with cable	IP68
Temperature with connector	-20…+85 °C
Wired temperature	-20…+105 °C
Drift from zero with temperature	<0.005 %/°C
Vibration resistance	20 g RMS
Shock resistance	250 g SRS
Sensor weight	Approx. 10 g
Core weight	Approx. 4 g
Probe force	Approx. 2 N
Rod	Ø3 mm, M2 threaded end
Core	Ni-Fe Alloy
Mechanical configurations	Moving core or probe with spring return
Connections	M12, flat cable, radial cable and PUR radial cable as per execution
Compatible electronics	Schreiber SM10 / SM12
Outputs via air conditioner	0/4–20 mA, ±20 mA, 0–10 VDC or ±10 VDC depending on electronics