The HW-group Sensor 60V 1W‑UNI v2 is a specialized, galvanically isolated voltage sensor designed for reliable measurement of DC voltages in the range of 0 to +60 volts DC and 0 to –60 volts DC. These voltage ranges cover a broad spectrum of industrial and technical applications—from battery monitoring and telecommunications networks to process control systems using standard 0–10 volt signals. Combining high measurement accuracy, robust design, and flexible power supply options, this sensor provides a future-proof solution for professional voltage monitoring.

The unique feature of the 60V sensor lies in its universal usability: it can measure both positive and negative voltages, making it particularly valuable for telecommunications applications using the common –48V standard. Telecommunication systems, switches, and UPS units can thus be continuously monitored to detect interruptions or voltage deviations early and initiate preventive measures.

The sensor integrates seamlessly with HW‑group monitoring systems such as Poseidon2, Ares, STE2, or SiteMon5. It connects to the 1‑Wire‑UNI network via an RJ11 port, making measured values accessible over LAN or GSM. Users can set voltage thresholds and receive automated notifications via e‑mail or SMS—ideal for remote monitoring of critical infrastructures.

The galvanic isolation of the input circuit ensures that potential disturbances or voltage spikes do not reach the communication interface. This isolation protects both the connected monitoring device and the sensor itself, making it particularly safe for use in installations with high electrical loads.

Precise Measurement and Calibration

The HW‑group Sensor 60V 1W‑UNI v2 offers a measurement accuracy of ±2% of full scale with a resolution of 0.1 volts. This precision is crucial when monitoring long-term battery voltages or acquiring 0–10V signals from process sensors. Even small voltage fluctuations can be clearly detected, enabling better maintenance planning and fault diagnosis.

To adapt to specific measurement tasks, the sensor is equipped with an 8-point calibration table. Using the optional 1W‑UNI USB calibrator, users can adjust individual correction factors to perfectly align the sensor output with the target measurement source. This is particularly useful for industrial probes whose output voltage may slightly deviate from nominal values.

Flexible Power Supply

The sensor can be powered either via the 1‑Wire‑UNI bus (up to two sensors per active port) or through an external 5‑volt DC adapter. This flexibility allows its use even in environments requiring additional power, such as long cable runs or power-intensive signal processing setups.

For configurations involving multiple daisy-chained sensors, HW‑group recommends using a “1‑Wire Hub Power” to ensure stable voltage delivery. The maximum cable length per active port is 60 meters—sufficient for distributed sensor installations within buildings or small industrial areas.

Application Areas

• Telecommunication infrastructure: Monitoring of –48V power systems commonly used in telco networks and backup UPS systems.
• Server rooms and data centers: Monitoring of battery voltage levels (e.g., 12V, 24V, 48V systems) to ensure uninterrupted power supply.
• Industrial automation: Connection of 0–10V process sensors such as pressure or level transmitters for precise control.
• Energy monitoring: Integration into existing energy management systems to record voltage values alongside current and power data.
• Remote monitoring of critical equipment: Immediate alerting when voltage levels move outside defined “SafeRange” thresholds.

Technical Specifications

• Measuring range: 0 to +60 V DC and 0 to –60 V DC
• Interface: 1‑Wire UNI (2 × RJ11 for daisy-chaining)
• Power supply: Bus-powered (max. 2 sensors per port) or external 5 V DC adapter
• Measurement accuracy: ±2%
• Resolution: 0.1 V
• Connection: 2‑pin terminal block (V+, V–)
• Operating temperature: –30 °C to +85 °C
• Humidity: 0–100% RH
• Protection rating: IP20
• Dimensions: 65 × 80 × 30 mm
• Weight: 200 g
• Maximum cable length: 60 m

Integration into HW‑group Systems

The Sensor 60V 1W‑UNI v2 is compatible with HW‑group monitoring devices such as Poseidon2, Ares, STE2, and SiteMon5. Combined with these systems, it delivers comprehensive energy and infrastructure monitoring with real-time voltage reporting via LAN, GSM, SNMP, or Modbus/TCP.

With the free HWg‑PDMS software, users can record, analyze, and export long-term data to Excel. This allows detailed maintenance documentation and technical analyses. For visualizations and remote access, the sensor can also be connected to the SensDesk cloud portal, which provides global monitoring via iOS and Android applications.

Simple Installation

Installing the sensor is straightforward: connect the voltage source to the V+/V– terminals, link the RJ11 cable to the monitoring system, and select the preferred power mode (bus or external). Thanks to its compact size and support for two sensors per port, the space requirements remain minimal.

For longer cabling or multi-sensor setups, using an active 1‑Wire hub is recommended. Calibration can be performed as needed via the USB calibrator to ensure maximum accuracy.

The HW‑group Sensor 60V 1W‑UNI v2 is a precise, safe, and flexible solution for DC voltage monitoring in industrial and IT environments. Its ability to measure both positive and negative voltages makes it an ideal choice for telecommunications and battery management applications. Integrated into the HW‑group ecosystem, it delivers reliable real-time data, supports alerting functions, and ensures optimal control of critical power systems.

Featuring galvanic isolation, compact construction, accurate measurement, and customizable calibration, it fulfills all the expectations of professional users - a future-proof investment for any monitoring infrastructure.