ElastiSense ApS, Bjerndrup Bygade 23, DK-6200 Aabenraa, Denmark - www.elastisense.com 001E5001 rev 3
EDS Series Displacement Sensors – Installation and Operation Manual
Thank you for buying our robust elastomeric displacement sensor.
General Remarks
An ElastiSense EDS sensor may either be used as a standalone unit or as a part of a system together
with other daisy chained sensors, which are controlled over a full duplex RS485 bus. The instruction
provided here is limited to installation and operation of the sensor as a standalone unit.
When operated as standalone displacement sensor, the EDS requires a 24VDC supply and outputs an
analogue current in the range of 4-20mA. The signal is linearly proportional to the displacement i.e.
4mA corresponds to 0mm and 20mA represents the maximum displacement of the sensor.
The sensor output can be customized to provide a voltage signal or a digital signal via RS485. Please
contact us in case your application requires such modifications.
Technical specifications
Notes:
• *Brackets can be reconfigured for mounting convenience. Thread-locking adhesive is
recommended.
• The female connector is not used for standalone operation
• Drawing is made at “Zero” stroke position (corresponding to dimensions A and B, as stated in
the figure)
•
M8 Male Connector, pin
assignment for analogue
operation:
Pin 1: +24VDC
Pin 2: GND
Pin 7: Analogue Out –
Pin 8: Analogue out +
ElastiSense ApS, Bjerndrup Bygade 23, DK-6200 Aabenraa, Denmark - www.elastisense.com 001E5001 rev 3
Model
EDS20
EDS50
EDS100
Measurement range (mm)
20
50
100
Power supply
24V DC
Analogue output
4 – 20mA (1 – 5V or 2 – 10V on request)
Digital output
Integer value in nm transmitted on full duplex RS485 network
Absolute accuracy
0.1% Full Scale
Temperature Coefficient
< 0.01 % FS / °C
Power consumption
< 100mA
Update rate
Up to 10k samples/second
Operating temperature
-20°C to 80°C (Other ranges on request)
Operating humidity
5%RH to 80%RH
Ingress protection
IP66 (at prescribed orientation)
Dimension A (mm)
77
116
185
Dimension B (mm)
63
102
171
Handling
To avoid damage to your sensors,
please refer to the images to the right.
Installation and connection
The sensor is delivered with an upper and a lower metal bracket with two mounting holes in each, as
shown in the specification section. The brackets are prepared for M5 screws for mounting (not
supplied). We recommend that a thread-locking product is used to prevent screws vibrating loose.
The sensor incorporates a highly stretchable strain gauge to measure displacement, and so operates
by being “stretched”. It is therefore necessary to mount the sensor with the distance between the
brackets holes being equal or greater than Dimension B shown in the table above. It is recommended
that the sensor is installed at 1mm stroke to cater for installation tolerances ensuring that the sensor
does not go below 0mm. STEP-files of the sensors at zero stroke are available on request.
A 24VDC supply voltage must be applied to the +24V and GND pins of the male M8 connector of the
EDS sensor, as shown on page 1.
Please take precautions to prevent over stroke during operation, as this may affect the accuracy of
the measurement and/or cause irreversible damage to the unit.
Warranty and Service
ElastiSense ApS products are warranted against defects in materials or workmanship. The warranty
applies for two years or 10 million cycles, whichever comes first. The warranty excludes impact
caused by strokes outside the rated measurement range. All faulty units must be shipped back to the
manufacturer for all warranty claims. Any service repairs must be performed by an authorized
ElastiSense ApS service partner. The unit contains no user serviceable components.