Easily retrofit mechanical gauges such as Bourdon tube pressure gauges, dial thermometers, and pressure level gauges for digitalization!!
Simply attach a magnet to the central axis of the instrument’s pointer and replace the front glass plate with a unit that has a built-in plastic glass-integrated pointer reading sensor and a BLE wireless module.
Users can easily install it on existing equipment already in operation, enabling IoT/DX of mechanical instruments.
The product name, Salta® , is an abbreviation of the English words Sensor add – on lead to action , and conveys the meaning of “adding sensors to lead (conservation) activities.”
Japan, Kobata
Kobata Retrofit IoT Sensor Unit “Salta®”
Made in Japan
Manufacturer: Kowata Keiki Seisakusho Co., Ltd.
Product name: Retrofit IoT Sensor Unit “Salta®”
Features
You can easily install this retrofit IoT/DX product on existing equipment, allowing you to start right away with the included software. This product is suitable for mechanical instruments such as Bourdon tube pressure gauges, bimetal thermometers, and other dial-type (round pointer type) gauges. Any type with a central axis pointer and replaceable gauge glass (removable front cover) is compatible.
To digitalize the instrument, simply attach a magnet to the pointer shaft and replace the glass with a resin glass integrated sensor unit. Users can easily install it themselves without any adjustment if they follow the position described in the instruction manual. For static pressure gauges (no pressure fluctuations), installation is possible even while the equipment is operating (when pressurized), eliminating the need to stop the machine.
No power supply or wiring work is required as the unit is powered by a lithium coin battery (CR2032) and uses wireless transmission via BLE. The low power consumption design ensures a battery life of approximately 1 year when transmitting every 15 seconds (theoretical value; actual battery life may vary depending on usage conditions).
Specifications
| Parameter | Specification |
| Applicable Gauges | Diameter 60mm, 75mm, 100mm, 150mm, 200mm, 300mm round gauges |
| Accuracy | ±1.6% F.S. |
| Sensor | TMR magnetic sensor |
| Battery Used | CR-2032 |
| Battery Life | 1 year (when data is sent every 15 seconds) |
| Communication Method | BLE (Bluetooth 4.2) |
| Communication Range | Within approx. 10m |
| Storage Temperature | -20°C to 70°C |
| Operating Temperature | -10°C to 60°C |
| Dust & Waterproof Rating | Equivalent to IP65 |
By replacing the plate glass of an existing instrument with the retrofit IoT sensor unit “Salta®” integrated with resin glass (Note 1), you can transform the instrument into an IoT device. According to the Measurement Act, replacing the glass of a pressure gauge is considered a minor repair that users can perform.
To replace the lithium coin battery, simply remove the front cover cap of the Salta case and insert the battery vertically from the front. The case, made of ASA flame retardant material, offers high weather resistance. For outdoor use, select a vent-compatible product to prevent pressure changes inside the case due to temperature fluctuations. Depending on the application, the transparent resin glass can be made of either acrylic or PVC.
Model designation format
| Parameter | Specification |
| Nominal Diameter | 50: φ50 60: φ60 75: φ75 100: φ100 25: φ125 150: φ150 200: φ200 300: φ300 |
| Pipe/Glass Material |
SAC: ASA pipe/acrylic glass
SPV: ASA pipe/PVC (vinyl chloride) glass SPC: ASA pipe/polycarbonate glass |
| Vent Filter | Blank: None V: With (For outdoor specifications, please specify with vent filter) |
| Resin Glass Outer Diameter/Thickness | Actual Size Standard Example φ101×2t |
External dimensions
Free standard software included: Desktop Salta®
- You can try out DX right away by using the software “Desktop Salta®” included in the standard bundle!
- You can use it immediately with a computer or tablet equipped with Bluetooth and running Windows 10 or 11 (64-bit only).
- Bluetooth data reception is possible for multiple Salta® devices.
- Up to 10 instruments can be monitored on one screen. (The screen can be displayed by switching tabs for group settings.)
- It is possible to display the instrument name, measurement value, battery voltage value, BD address for Bluetooth identification, and battery remaining capacity icon.
- List display function: You can select between displaying gauge dials and graphs, and you can change the display position of the gauges by dragging and dropping them.
- Alert display function: By setting upper and lower thresholds, the color of the gauge on the list screen can be changed to any color depending on the threshold.
- Enlarged graph display function: Measurement data from any instrument can be displayed in a graph.
- Data logging function: Measurement data is saved in CSV format (tabular text file) on the PC/tablet’s hard disk, SSD, SD card, or other media.
- Report function: Saved data can be output for any period of time, allowing for secondary use such as detailed analysis and processing using spreadsheet software, etc.
“Desktop Salta®” system usage requirements
| Item | Description | |
| OS | Windows 10 64Bit *1 | Windows 11 64Bit *1 |
| Processor | 1 GHz or faster 64-bit compatible processor or SoC *2 | 1 GHz or faster with 2 or more cores 64-bit compatible processor or SoC *3 |
| Memory | 2GB or more *2 | 4GB or more *3 |
| Disk Capacity | 20GB or more *2 | 64GB or more *3 |
| Display | 1280 * 720 or higher *4 | |
| Bluetooth | Bluetooth 4.2 or later, compatible with GATT profile | |
*1 Not compatible with 32bit OS.
*2 The above is based on the system requirements for Windows 10.
*3 The above is based on the system requirements for Windows 11.
*4 Recommended sizes are 1280 * 720, 1366 * 768, 1920 * 1080.
Use Cases
System configuration example
- Patrol inspection and remote monitoring can be used together. (The reception standby time during patrol inspection depends on the transmission interval.)
- Even if patrol frequency decreases, monitoring accuracy improves, and automatic meter reading eliminates reading errors, saving labor.
- Automatic meter reading from a distance reduces the risk of inspection work on instruments at high places or in dark places.
- Long-distance communication is possible by using a relay router that converts the BLE transmission data from “Salta®” to LPWA such as LoRa.
- Cloud connection is possible via public wireless internet lines from a gateway equipped with a SIM card.
- It is possible to import data into a PLC and link with on-premise systems.
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