Robust and durable industrial sensors
Linear Measurement, Output
Sensor with self-diagnosis LED indicator
Non-contact measurement, long service life
High resolution of 1 µm
Non-linearity 0.01%
■ Repeat Accuracy 0.001%
Direct SSI digital output, 24/25/26-bit binary or Gray code
Real-time sensing, synchronized measurement
R-Series Linear Position Sensors
• The R-series RH and RP sensors are extremely robust and durable, making them the ideal choice for stringent industrial environments.
• The R-series offers two standard housing options - the RH type stainless steel outer tube withstands high pressure, suitable for hydraulic cylinder installation. The RP type aluminum molded housing provides accessories for easy machine tool surface installation and various magnet options.
• The sensor incorporates advanced signal processors and a complete output interface circuit. The double shielding of the housing ensures EMI interference protection, enhancing reliability and operational safety levels.
| Parameters | Specs |
| Input | |
| Measurement Data | Location, speed |
| Measurement Range | RP Aluminum Molding Shell: 50 - 5080 mm; RH Pressure-resistant Outer Tube: 50 - 7620 mm |
| Output | |
| Interface | SSI Synchronous Serial Interface or SSI Standard Differential Signal |
| Data Format | Binary or Gray code, options include parity check and error bit |
| Data Length | 8 ~ 32 bits |
| Data speed | 70 kBd ~ 1 MBd, depending on cable length: Wire Length: <3 <50 <100 <200 <400 m Speed: 1000 <400 <300 <200 <100 kBd |
| Last Updated | Travel: 300, 750, 1000, 2000, 5000 mm; Frequency: 3.7, 3.0, 2.3, 1.2, 0.5 kHz |
| Accuracy | |
| Resolution | 1 / 2 / 5 / 10 / 20 / 50 / 100 µm |
| Non-linearity | < Soil content up to full scale 0.01% (Fine soil 50 pm) |
| Repetitive accuracy | Full scale ± 0.001% (± 2.5 pm) |
| Work Conditions | |
| Operating Temperature | - 40 to +75 °C |
| Humidity / Dew Point | Humidity 90%, no condensation |
| Temperature coefficient | < 15 ppm / °C |
| Protect | RP Aluminum Molding Shell: IP65; Pressure-resistant Outer Tube: IP67 (Connector must be tightly locked) or IP68 (Optional straight-out cable) |
| Impact Index | 100 g (Single Impact) / IEC Standard 68-2-27 |
| Oscillator Indicator | 15 g / 100 - 2000 Hz / IEC Standard 68-2-6 (Durability) |
| EMC Testing | Radiation EN 50081-1, Immunity EN 50082-2, EN 61000-4-2/3/4/6, Class 3/4, Type A, CE Certified |
| Magnet Speed | Any |
| Structure, Material | |
| Fault Indicator | Electronic end caps with LED display |
| RP Aluminum Molding Shell | Sensor Head: Aluminum, Sensor Rod: Aluminum, Position Magnet: Slider Magnet or Floating Magnet |
| RH Pressure-resistant Outer Tube | Sensor Head: Aluminum | Sensor Rod and Flange: 304L Stainless Steel | External Tube Pressure: 350 bar / 690 bar (Peak) | Position Magnet: Ring Magnet, Floating Magnet, or Buoyant Ball |
| Installation | |
| Installation Location | Any direction |
| RP Aluminum Molding Shell | Detachable fixed clip (to be secured with M5 screws) |
| RH Pressure-resistant Outer Tube | Male threaded flange, Metric M18 x 1.5 or Imperial 3/4" - 6 UNF-3A |
| Average Locking Force | 45 N-m |
| Electrical Connections | |
| Connector selection | 7 Pin D60 Connector or Direct Cable |
| Input Voltage | +24 Vdc （-15 / +20%） |
| Polarity Protection | -30 Vdc |
| Overpressure Protection | 36Vdc |
| Power consumption | Typically 100 mA or less |
| Fluctuation | < 1 % S-S |
| Electrical shock quantity | 500 V (0V connected to mechanical housing) |
SSI Synchronous Serial Interface
The sensor meets all the requirements of the output encoder for the SSI standard. Position values are transmitted to the control system at high speed using a 24/25/26-bit encoding pattern. One of the main functions of SSI is synchronous data conversion, which is easily achievable in a closed-loop control system. The controller generates a clock pulse train to activate the sensor data: position data is sent bit by bit to the controller with each clock pulse received by the sensor. The position data is continuously updated within the sensor and then converted into serial information through a shift register.
Pressure-resistant outer tube dimensions and installation instructions
RH Series pressure-resistant outer tubes, aluminum profile electronic chamber, designed specifically for hydraulic systems use, internally mounted within the hydraulic cylinder, with pressure resistance up to 34MPa continuous (69MPa peak). Available with thread specifications M18×1.5, M20×1.5, or 3/4”-16 UNF-3A.
Note: The dead zones shown in the diagram indicate that the sensor outputs are zero or unreliable within this area. The dead zone values for this sensor are 50.8mm and 63.5mm, respectively. These values can be appropriately modified according to customer requirements and can be specially requested from our sales or technical team at the time of ordering.
Aluminum Profile External Structure Dimensions and Installation Instructions
RP aluminum extrusion external mounting structure, suitable for general machinery, easy to install, and convenient to maintain.
Sensor wiring method
When connecting aviation connectors, define by the pin and the corresponding wire color.
Waterproof connector direct output, defined by wire color
D70 plug pin arrangement (facing the sensor head)
| Needle size | Wire color | Definition |
| 1 | Gray | Data (-) |
| 2 | Powder | Data (Plus) |
| 3 | Huang | Clock (+) |
| 4 | Green | Clock (-) |
| 5 | Brown | +24VDC（-15%/+20%） |
| 6 | White | Direct Current Power Supply接地 |
| 7 | No engagement |
