Contamination Sensor CS 1500 Series

To select the correct sensor, please refer to the product datasheet. 

Option 1: Via captive portal

Step 1. Ensure that the WLAN on the ContaminationSensor is activated – blue Wi-Fi LED indicator is permanently on.

Step 2. Establish a WLAN connection between the Contamination Sensor and your mobile device.

• To do this, check the available WLAN connections on your device and select the ContaminationSensor WLAN.
• By default WLAN Name of the sensor looks like CS1500SNxxx and corresponds to the SSID.
• Here, xxx corresponds to the serial number of the certain ContaminationSensor.
• If new sensor started for the first time – unique factory password key input is mandatory to complete the connection. Later password function can be disabled or changed upon the user necessity. Factory password can be found in factory settings sheet which is a part of sensor delivery scope or in digital downloads area accessible via QR-Code on the back of the sensor.
• After successful connection blue Wi-Fi LED indicator is blinking.

Step 3. The web UI of the ContaminationSensor is accessed automatically after a successful connection via WLAN. The transfer to the web UI of the ContaminationSensor is automatic.

• The web UI of the ContaminationSensor opens via Captive Portal.
• Please confirm the connection by hitting confirmation buttons on both windows that appeared after connection.

Note: Should not the Captive Portal/ web UI window automatically appear after connection to the sensor please proceed with manual connection using the URL or IP address as described on the next page

Option 2: Via URL or IP address

If the automatic opening of the web UI of the ContaminationSensor does not appear on your end device, you can open the web UI manually. The following steps provide further detail:

Step 1. Ensure that the WLAN on the ContaminationSensor is activated – blue Wi-Fi LED indicator is permanently on.

Step 2. Establish a WLAN connection between the Contamination Sensor and your mobile device.

• To do this, check the available WLAN connections on your device and select the ContaminationSensorWLAN.
• By default, WLAN Name of the sensor looks like CS1500SNxxx and corresponds to the SSID.
• Here, xxx corresponds to the serial number of the certain ContaminationSensor.
• If new sensor started for the first time – unique factory password key input is mandatory to complete the connection. Later password function can be disabled or changed upon the user necessity. Factory password can be found in factory settings sheet which is a part of sensor delivery scope or in digital downloads area accessible via QR-Code on the back of the sensor.
• After successful connection blue Wi-Fi LED indicator is blinking.

Step 3. Open the browser on your end device for example Chrome or Safari.

Step 4. Enter the URL http://cs1500 in the address bar of your browser. OR

• Enter the default Sensor WLAN IP address instead – 192.168.4.1

Step 5. The web UI of the ContaminationSensor opens. Please confirm the connection by hitting confirmation buttons on both windows that appeared after connection.

Each sensor delivered with unique password key which must be provided while starting the sensor for the first time. Later password function can be disabled or changed upon the user necessity. Factory password can be found in factory settings sheet which is a part of sensor delivery scope. Additionally, it can be found in digital downloads area accessible via QR-Code on the back of the sensor.

Web UI settings sticker is a part of a delivery Scope. It helps quick access to the Web UI by simply scanning the QR-Code. Make sure that before end device must be connected to sensor via Wi-Fi. For later convenience sticker can be brought on the sensor back so that it is always available in future.

Previous Sensor CS1000:

• Minimum indication limit: ISO 9/8/7.
• Fluids cleaner than these values were displayed as <9/<8/<7 or marked as “Too Clean.”
• If the cleanliness level of any single channel falls below the indication limit, all three channels will display <9/<8/<7.

New CS1500 Sensor:

• Minimum indication limit: ISO 7/6/5.
• Fluids cleaner than these values are displayed as <7/<6/<5.
• If the cleanliness level for one channel falls below the indication limit, that channel will display a “<” symbol independently of the other two. Example: 9/<6/<5.

Important: Lowest ISO Class indication for serial CS1500 sensor is limited at ISO 7/6/5. Everything under it will be shown as ISO <7/<6/<5. 

Yes, under specific conditions such as stable flow and extended measurement cycles (e.g., 30 minutes), the sensor can achieve readings down to ISO 2.

However, to prevent unstable results and flow error codes with ultra-clean fluids, the new sensor is intentionally limited to ISO <7/<6/<5.

Important: Lowest ISO Class indication for serial CS1500 sensor is limited at ISO 7/6/5. Everything under it will be shown as ISO <7/<6/<5.

For presentation purposes, a dedicated Web Demo Mode is available globally. Simply visit https://cs1500.hydac.com or scan the QR code. This demo simulates the behavior of the CS1500 and is always updated to the latest version. Multiple users can explore the features simultaneously without needing a physical connection to the sensor—where only one user can connect at a time. For exhibitions and training sessions, you can either place a tablet next to the sensor with this URL open or share the QR code so participants can access the demo on their own devices.