Overview
The Carlo Gavazzi BD35 is the base/main unit for the UDM35 modular digital panel meter family. Designed to meet advanced application requirements, the BD35 provides a foundation for flexible instrumentation in industrial automation, process control, and electrical distribution systems. The UDM Series features a rugged 1/8 DIN housing rated IP67/NEMA4x, making it suitable for harsh panel-mounted environments.
Key Features
- 3-1/2 digit LED display with 14.2mm character height
- TRMS AC current and voltage measurements across multiple ranges
- Easy parameter programming and parameter cloning via UdmSoft or PC HyperTerminal
- Min/max recording, data hold, display/input range scaling, and password protection
- Modular architecture supports optional input, output, and power supply modules (BQTRX, BPH, etc.)
- Supports temperature, resistance, and frequency measurement via optional input modules
Technical Specifications
- Display Type: 3-1/2 digit LED, red
- Housing: Modular 1/8 DIN
- Panel Cutout: 92mm width × 45mm height
- Depth: 133mm
- Operating Temperature: 0°C to 50°C
- IP Rating: IP67, NEMA4x
- Measurement Ranges (with optional inputs): 200 μA to 5 A, 200 mV to 500 V, temperature -50 to 1000°C, resistance 20 Ω to 20 kΩ, frequency 0.001 Hz to 50 kHz
- Supply Voltage Options: AC 90–260 V or DC 10–28 V
- Weight: Approximately 4.9 oz
- Accuracy: 0.1% RDG
Typical Applications
In automation and process control applications, monitoring and control of variables such as temperature, pressure, and vibration is essential. A digital panel meter can perform these functions and provide analog and/or serial re-transmission of the measured value for feedback or data-logging purposes. The BD35 is ideal for:
- Electrical power distribution boards and switchgear panels
- Process control and monitoring systems
- Industrial machinery and automation cabinets
- Environmental and facility monitoring
- Energy management and power quality applications
Compatibility & Replacements
Compatible With
- UDM35 modular input cards (BQTRX thermocouple input, BQLSX/BQLSE analog input modules)
- BPH power supply module
- BO series analog and relay output modules
- Standard 1/8 DIN panel-mounting systems
- RS422/RS485 serial communication networks
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The BD35 is a base unit that may replace other UDM35 display modules in existing installations when used with compatible input and output card configurations.
Works With
- UdmSoft software for configuration and data logging
- PC HyperTerminal for parameter setup
- RS485 and serial communication protocols
- Third-party SCADA and process control systems via optional output modules
- Standard industrial control panels and DIN rail mounting infrastructure


















