Elektronische positie indicator


1Main specifications

Base and case

High-resistance polyamide based (PA) technopolymer.

Black base.

Case in the following colours:

  • C2: RAL 2004 orange, glossy finish.
  • C3: RAL 7035 grey, glossy finish.

Available on request in RAL 7021 grey-black colour (C1).

Cover with perfectly sealed gasket and AISI 304 stainless steel UNI 6955 type self-tapping screws with six-lobe socket TORX®T06 (registered trademark by TEXTRON INC.).

The ultrasonic welding between the base and the case prevents separation and avoids dust and liquid penetration.


AISI 304 stainless steel with Ø 20 mm H7 reamed hole, fitting to shaft by means of AISI 304 stainless steel grub screw, hexagon socket and cup end UNI 5929-85, included in the supply.


Transparent polyamide based (PA-T) technopolymer, moulded over the case and with a perfect seal. Resistant to solvents, oils, greases and other chemical agents (avoid contact with alcohol during cleaning operations).


  • 6-digit LCD of 12,0 mm height and special characters.

The visualization parameters can be set and modified by the operator by means of appropriate keys:

  • values displayed in mm, inches or degrees
  • display of mode for use (absolute or incremental mode)
  • reading orientation (right or reverse).


Polyester membrane. Resistant to solvents, alcohol, acids, alkalis.

Internal gasket

O-ring front sealing in NBR synthetic rubber, between the case and the boss.

Brass bushing with double O-ring sealing in NBR synthetic rubber inside the rear cavity of the base (DD52R-E-RF-SST-IP67).

Rear gasket

Foam polyethylene, supplied.

Standard executions

  • DD52R-E-RF-SST-IP65: completely sealed indicator with IP 65 protection class, see EN 60529 table.
  • DD52R-E-RF-SST-IP67: completely sealed indicator with IP 67 protection class, see EN 60529 table obtained by means of a brass bushing with double seal ring inside the rear cavity of the base.
2General information

Features and applications

DD52R-E-RF position indicators, with battery power supply, can be used on passing through shafts in any position to provide the reading of the absolute or incremental positioning of a machine component.

The 6-digit display of 12,0 mm height ensures excellent readability even from a distance and from different viewing angles.

The window in transparent technopolymer protects the LCD display against accidental shocks.

The high protection degree, IP 65 or IP67, makes the indicator suitable for applications that require frequent washing, even with intense water jets.

In the operating mode, by using the 4 function keys, it is possible to select the incremental or the absolute mode, the unit of measure (mm, inches or degrees), reset the absolute counter or load a preset source value and the preset offset value.

In the programming mode, through the 4 function keys, it is possible to program the reading after one revolution of the shaft, the direction of rotation, the display orientation, the resolution (number of decimal digits displayed), the source value and the offset value, the max. speed of rotation and set the functions of the keys for the different options available.

The internal battery ensures long battery life (over 3 years). A special symbol appears on the display when it is necessary to replace the battery. The replacement can be performed easily by removing the front cover (Fig.1), without disassembly of the indicator from the control shaft and without the loss of configuration parameters.

Quick positioning system

DD52R-E-RF indicators (Elesa Patent) are networked to the control unit UC-RF via radio frequency (RF), constituting a wireless system for rapid positioning of the machine parts (fig.2).

This system is particularly suitable for applications that require frequent format changes, facilitating the correct adjustment of the target/current position of the machine parts, also representing a safety system. In fact, even if a single DD52R-E-RF indicator is not placed in the target position, PLC doesn’t allow the beginning of the machine production cycle, thus avoiding production issues.

The installation of the system is quick and easy as it does not require the use of connecting cables between the control unit and the indicators.

Further technical information available in ""Operating instructions"".

Mechanical and electrical characteristics
Tension feedLithium battery CR2477 3.0 V
Battery life3 years
Display6-digit LCD of 12 mm height and special characters
Reading scale-199999; 999999
Number of decimal digitsprogrammable (1)
Unit of measure

mm. inches, degrees

programmable (1)

Rotation max. speed

300/600/1000 r.p.m (2)

programmable (1)

Precision10.000 impulses / revolution
Protection classIP65 or IP67
Working temperature0 to 50 °C
Storing temperature-20 to +60 °C
Relative humidityMax. 95% at 25°C without condensation
Interference protectionComplies with Directive 2014/53/EU (RED).

(1) See the operating instructions.

(2) Default: 600 r.p.m.

Higher rotation speed to 600 r.p.m. can be mantained for short periods of time.

The value of the max. speed affects the battery life.

3Assembly instructions

Assembly instructions

  1. Drill a Ø 6 mm by 10 mm hole in the body of the machine with a 30 mm centre distance from the spindle to fit the rear referring pin.
  2. Fit the indicator onto the spindle and make sure that the referring pin fit the hole.
  3. Clamp the boss to the spindle by tightening the grub screw with hexagon socket and cup end, according to UNI 5929-85.

Accessories on request (to be ordered separately)

  • BSA52-E: die-cast zinc alloy bases for spindle locking, epoxy resin coating, black colour, matte finish. GN 302 adjustable handle with die-cast zinc alloy lever body and AISI 304 stainless steel clamping element. A Ø 6.1 mm hole to fit the referring pin of the indicator. Handle positioned either on the right or on the left. Fitting to the machine by means of two M4 cylindrical-head screws (not included in the supply).
  • RB52-SST: AISI 304 stainless steel reduction sleeves.

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Gewicht (g)

470007281 DD52R-E-RF-SST-IP65-C2
€ 250,10
470007282 DD52R-E-RF-SST-IP65-C3
€ 250,10
470007283 DD52R-E-RF-SST-IP67-C2
€ 262,62
470007284 DD52R-E-RF-SST-IP67-C3
€ 262,62