1. Introduktion og overview
The WitMotion SINRT Series is a high-precision dual-axis tilt switch designed for various industrial and agricultural applications. It features a built-in relay output circuit with a measurement range of ±90° on both X and Y axes. This sensor is engineered to provide reliable tilt angle monitoring and alarm functions, making it suitable for horizontal safety alarms and platform leveling systems.
When the inclination angle exceeds a user-defined alarm threshold, the device activates a no-edge electric shock relay signal (with a drive current of 2A). This signal can be used to control external systems, such as opening a solenoid valve for hydraulic outrigger leveling or triggering buzzers and alarm lights to alert operators, ensuring safe construction and operation.
The SINRT Series is factory-calibrated, but the alarm threshold is user-configurable via RS232 or TTL interfaces, allowing for flexible adaptation to specific application requirements. It boasts high performance with temperature and linearity compensation, and integrates comprehensive protection functions against short circuits, instantaneous high voltage, and polarity reversal, ensuring robust operation in demanding environments.

2. Specifikationer
The SINRT Series tilt switch offers robust performance and features tailored for demanding applications. Key specifications are detailed below:
| Parameter | Value/Condition |
|---|---|
| Type | Accelerationssensor |
| Bruge | Måling af hældningsvinkel |
| Measuring Axis | X Axis, Y Axis |
| Angle Output | ±90° (optional) |
| Alarm Axis | X Axis, Y Axis |
| Udgangstype | Relay Output (ON/OFF), Digital Output |
| Relay Output State | Default open (Normally Open/Normally Closed configurable) |
| Alarmtærskel | Optional (default 10 degrees), configurable via RS232/TTL |
| Opløsning | 0.01 grader |
| Accuracy (Full Range) | 0.1 degree (-40 to +85°C) |
| Stabilitet | 0.1° (-40 to +85°C) |
| Frequency (DC response) | 100Hz (Bandwidth 5Hz) |
| Starttid | 0.5S |
| Forsyning Voltage | 9-36V (Minimum 5V, Maximum 36V, Typical 12-24V) |
| Arbejdsstrøm | 60mA (typisk) |
| Normally Closed Max Current | 1000mA (Typical), +85mA (Maximum) |
| Arbejdstemperatur | -40 til +85°C |
| Opbevaringstemperatur | -55°C (Minimum) |
| Arbejdstid | ≥55000 hour/time |
| Stødmodstand | 3500g, 0.5ms, 3 time / axis (>3500g High Vibration Resistance) |
| Anti-Vibration | 10grms, 10~1000Hz |
| IR | ≥100KΩ |
| Beskyttelse | IP67 / IP68 Waterproof |
| Etui materiale | Skal af aluminium |
| Stik | 1m cable (Standard) |
| Installation | 4 M6 skruer |
| Bind | 90*40*29.5 mm |
| Vægt | 55 g (nettovægt) |
| Interface | RS232, TTL (Optional: CAN, RS485 depending on model) |




3. Produktfunktioner
- Dual-axis Inclination Monitoring: Measures tilt angles on both X and Y axes with high precision.
- Relæudgang: Provides ON/OFF relay signals based on configurable alarm thresholds.
- Høj præcision: Features a resolution of 0.01 degrees and an accuracy of 0.1 degrees across the full range.
- Wide Voltage Indgang: Operates reliably with a supply voltage område på 9-36V.
- Robust beskyttelse: IP67/IP68 waterproof rating ensures durability in harsh environments.
- Holdbar konstruktion: Housed in a sturdy aluminum case, designed for longevity.
- Høj vibrationsmodstand: Withstands shocks up to 3500g and anti-vibration up to 10grms (10-1000Hz).
- Bred driftstemperatur: Functions effectively in temperatures ranging from -40°C to +85°C.
- Multiple Interface Options: Available with RS232, TTL, CAN, or RS485 interfaces depending on the specific model.
- Integrated Level Gauge: Equipped with liquid water balance beads for easy visual verification of installation level.


4. Opsætning og installation
4.1. Elektriske forbindelser
Proper electrical connection is crucial for the correct operation of the tilt switch. Refer to the wiring diagram below for detailed instructions:
- Tilslut Rød ledning to a 9-36V power supply.
- Tilslut Sort ledning to ground (GND).
- Hvis du bruger TTL version, the Green wire is RX (Receive) and the Yellow wire is TX (Transmit) for the serial port interface.
- Hvis du bruger RS232 version, the Green wire is RX (Receive) and the Yellow wire is TX (Transmit) for the serial port interface.
- The alarm threshold for X and Y axes can be set through the RS232 or TTL interface.

4.2. Installation Method and Notes
The sensor's accuracy depends heavily on correct installation. Follow these guidelines:
- Koordinater: Installation orientations are based on the right-hand rule.
- Horizontal Installation (Lay Flat): Keep the sensor's mounting surface parallel to the ground.
- Vertical Installation (Vertically Placed): The installation surface should be perpendicular to the ground, with the Y-axis pointing vertically inward. Note that vertical installation is typically suitable for single-axis monitoring.

Forholdsregler ved installation:
Incorrect installation will lead to measurement errors. Pay close attention to the following:
- The installation surface of the sensor and the surface to be measured must be parallel and stable. Any deviation will cause angle measurement errors.
- The primary axis of the sensor (X or Y, depending on the measurement) and the axis of the object to be measured must be parallel. Ensure there is no angle between these two axes.

5. Betjeningsvejledning
The SINRT tilt switch operates by continuously monitoring the inclination angle on its X and Y axes. When the measured angle exceeds the pre-set alarm threshold, the internal relay changes state (from normally open to closed, or vice-versa, depending on configuration), triggering the connected external device.
- Tænd: Connect the sensor to a stable 9-36V DC power supply as per the electrical connection instructions.
- Alarm Threshold Setting: The factory default alarm threshold is 10 degrees. This threshold can be customized to your specific needs using the RS232 or TTL communication interface. Specialized software or a SIM test board (if available) is typically used for this configuration.
- Relæudgang: Once the threshold is set, the relay output will activate (change state) when the tilt angle on either the X or Y axis surpasses the configured threshold. This output can then drive external alarms, control systems, or safety mechanisms.


6. Vedligeholdelse
The WitMotion SINRT Series tilt switch is designed for low maintenance due to its robust construction and IP67/IP68 protection. However, regular checks can help ensure its longevity and reliable performance:
- Forbindelsesintegritet: Periodically inspect all electrical connections to ensure they are secure and free from corrosion or damage.
- Udvendig rengøring: If installed in a dusty or dirty environment, gently clean the exterior of the sensor with a soft, damp klæde. Undgå at bruge skrappe kemikalier eller slibende materialer.
- Fysisk skade: Regularly check for any signs of physical damage to the casing or cable. While highly durable, extreme impacts can affect performance.
- Miljøforhold: Ensure the operating environment remains within the specified temperature and vibration limits.
7. Fejlfinding
If you encounter issues with your SINRT Series tilt switch, consider the following troubleshooting steps:
- Ingen strøm/Ingen udgang:
- Verify that the power supply is connected correctly (Red wire to 9-36V, Black wire to GND).
- Kontroller strømforsyningens volumentage for at sikre, at den er inden for området 9-36V. - Incorrect Readings or No Alarm Trigger:
- Vedrview the installation method. Ensure the sensor's mounting surface is parallel and stable to the measured surface.
- Confirm that the sensor's primary measurement axis is parallel to the object's axis of tilt.
- Check the alarm threshold settings. The factory default is 10 degrees; ensure it is configured appropriately for your application. - Communication Issues (RS232/TTL):
- Verify the correct wiring for RX and TX lines.
- Ensure the communication parameters (baud rate, data bits, stop bits, parity) match between the sensor and your communication device. - Relæ aktiveres ikke:
- Check the relay output wiring to the external device.
- Ensure the external device's current draw does not exceed the sensor's maximum normally closed current (1000mA typical).
8. Brugertips
- Consider a Control Board: While the SINRT tilt switch provides relay output, some users may find it beneficial to integrate it with a dedicated control board for more complex logic, data logging, or advanced interface options. The SIM test board can be used for initial setup and threshold configuration.
- Bekræft installationen: Always double-check the physical installation, ensuring the sensor is level and aligned with the intended measurement axes. Use the integrated liquid water balance beads for a quick visual check.
- Tilpasning: Leverage the RS232/TTL interface to fine-tune alarm thresholds to prevent false alarms or ensure timely activation for critical safety applications.
9. Garanti og support
WitMotion provides Livsvarig teknisk support for the SINRT Series tilt switch. For any technical assistance, troubleshooting, or inquiries regarding product functionality, please contact WitMotion customer support. Ensure you have your product model and any relevant details ready when seeking support.





