Data Sheet for Linear Sensors
MEGATRON Elektronik GmbH & Co. KG ▪ Hermann-Oberth-Strasse 7 ▪ 85640 Putzbrunn / Munich
Tel.: +49 89 46094-0 ▪ www.megatron.de ▪ info@megatron.de
Date: 11/08/2021
Page: 1 of 3
Potentiometric Linear Transducer (Conductive Plastic)
Series CH37
Specications are subject to change without notice
The CH37 series is used in compact hydraulic cylinders,
which require a small displacement sensor with up to 340 bar.
Internal or external ange design
Space saving design
Independent linearity ±0.1 %
Conductive plastic with almost innite resolution
Measuring lengths from 100 mm to 550 mm
Long life span (100 million movements)
Electrical Data
CH37
100
CH37
150
CH37
200
CH37
300
CH37
350
CH37
500
CH37
550
E󰀨ective electrical travel (mm) 1.) 104 ±1 154 ±1 204 ±1 304 ±1 354 ±1 504 ±1 554 ±1
Total electrical travel (mm) 1.) 110 ±1 160 ±1 210 ±1 310 ±1 360 ±1 510 ±1 560 ±1
Total resistance 1.) 10 kOhm
Resistance tolerance ±20 %
Independent linearity (best straight line) 1.) ±0.1 %
Theoretical resolution 1.) Almost innite
Repeatability 1.)
≤ 0.01 mm
Max. / recommended wiper current 1.) 1 mA (@ 40 °C, 1 min in case of failure) / ≤ 0.1 µA
Power rating @40 °C (0 W @120 °C) ≤ 3 W
Isolation voltage 1.) < 100 μA@500 VAC, 1bar, 2s
Isolation resistance 1.) 100 MOhm@500 VDC, 1bar, 2s
Mechanical Data, Environmental
Conditions, other
CH37
100
CH37
150
CH37
200
CH37
300
CH37
350
CH37
500
CH37
550
Mechanical stroke (mm) 1.) 104 ±1 154 ±1 204 ±1 304 ±1 354 ±1 504 ±1 554 ±1
Lifetime (90 % e󰀨ective electrical travel) 2.)
> 25 million meters or 100 million movements
(the smaller value applies)
Max. operational speed ≤ 1.5 m/s
Operational force @ RT 1.) 2.) ≤ 1 N
Operational temperature
-30..+100 °C
Storage temperature
-50..+120 °C
Protection grade (IEC60529)
Direct installation in hydraulic cylinders up to 340 bar
Vibration (IEC 68-2-6, Test Fc)
20 g (10..2000 Hz, 0.75 mm)
Shock (IEC 68-2-27, Test Ea)
50 g, halfsine, 11 ms
Length of shaft (A) ±3 mm
124.8 174.8 224.8 324.8 374.8 524.8 574.8
Material housing Stainless steel AISI 303
Material shaft Aluminium
Electrical connection 3 core strands 200 mm (optional 6-pole connector only external ange version)
1.) According IEC 60393
2.) Determined by climatic conditions according to IEC 68-1, para. 5.3.1 without load collectives
Please note: Max. permissible supply voltage <75 VDC respectively <50 VAC in addition the max. power rating must be observed
CH37
external ange
CH37
internal ange
Data Sheet for Linear Sensors
MEGATRON Elektronik GmbH & Co. KG ▪ Hermann-Oberth-Strasse 7 ▪ 85640 Putzbrunn / Munich
Tel.: +49 89 46094-0 ▪ www.megatron.de ▪ info@megatron.de
Date: 11/08/2021
Page: 2 of 3
Potentiometric Linear Transducer (Conductive Plastic)
Series CH37
Specications are subject to change without notice
Order Code
Description Selection: standard=black/bold, possible options=grey/cursive
Series: CH37
E󰀨ective electrical travel:
100 mm
150 mm
200 mm
300 mm
350 mm
500 mm
550 mm
100
150
200
300
350
500
550
Construction:
Internal ange (only with cable)
External ange metric
External ange inch
I
EM
EI
Electrical connection:
3 core strands 200 mm
Option 6-pole connector (only external ange)
Option strands length in m
K
A
Kxx
General handling guidelines:
To ensure proper potentiometer function, requirements as listed below have to be maintained
"Installation requirements" and "general operating data" to be respected at storage and system integration
The suitability of the hydraulic oil used in conjunction with the open sensor element must be checked by the user.
Slider operation permissible within e󰀨ective electrical travel only at handling, system integration and sensor operation.
Slider operation beyond the limits of total electrical travel is not permissible (travel denitions see IEC60393-1 chapt. 4.4.5
and 4.4.6)
Removing the product from package when processing by gripper (robot) or protective glove (manual handling) only.
Fingerprints on product are not permissible.
Mechanical damage (Scratches, dents, deections etc.) on resistance and on wiper element is not permissible
Storage of product packed in package as delivered permissible only. Open storage (unpacked) is not permissible.
Non system delement (e.g. wear of actuator etc.) on resistance- and on wiper element is not permissible.
Any kind of cleaning treatment on product is not permissible
Evaporation of silicon in the environment is not permissible
In delivery included:
Lock ring and wave washer for mounting the wiper carrier
Note: When calibrating the linear transducer, be careful to set the stroke so that the output does not drop below 1 % or rise beyond 99 % of the
supply voltage.