Flange-type torque meter - ±0.04% - dual range - ± 500Nm to ± 10kNm

Overview

The DF dual torque meter is a precise and compact solution for rotational torque measurement up to 10000Nm with an accuracy better than ±0.04% of full scale. Highly compact, the annular stator is removable to facilitate installation on the shaft line.

The maximum rotational speed is 21000 rpm as standard, with 25 krpm available as an option. The design is particularly robust, with high permissible radial, axial, and bending loads, and a permissible torsional overload of 300%.

DF dual specificity: a second measurement range to optimize accuracy for lower torques (ratio 1:2 to 1:5 of the nominal range). This allows:

• Testing a variety of systems (and thus torques) without disassembly
• Testing a wide range of operating points on a motor or transmission within the same test campaign.

Architecture

The system stands out for its modularity: the DF1 to DF5 dual versions cover ranges from 500 Nm to 10 kNm. Output interfaces include frequency (RS422), analog (±10 V), CAN 2.0B (2 kHz), and Ethernet signals, compatible with most industrial data acquisition systems. Configuration is performed via a modern web interface (TCU Discover software provided), enabling quick setup of alarm thresholds, digital filters, and communication protocols. A dbc file is provided for CANbus users.

Specifications

Installation

Designed for easy integration, the DF dual features standardized DIN dimensions (flange diameters from 84 mm to 196 mm), ensuring mechanical compatibility with existing test benches. Its compact housing and resistance to vibrations/accelerations make it a preferred choice for testing electric motors, transmissions, or pumps.

Dimensions

Measurement signal interfaces

The TCU module acts as the interface between the torque meter and the PLC / data acquisition system / PC. The TCU allows configuration of the torque meter (output signal types, alarms, CAN communication, etc.) and collects measurement signals.

Applications

The DF plus sensors are particularly suited to the automotive, aerospace, energy, and research sectors, where measurement traceability and repeatability are critical. They excel in applications such as:

• Characterization of electric motors (efficiency, torque mapping)
• Transmission test benches (durability, mechanical losses)
• Pump and compressor testing (energy optimization)
• Torque measurements on generators (performance validation)

Dimensions

Characteristics	Rotor	Stator
DF1 dual
DF2 dual
DF3 dual
DF4 dual
DF5 dual

• Custom measurement ranges: Adaptation on request for values outside the standard range (e.g., >10 kNm or < 100 Nm).
• Extended maximum speed: 40,000 rpm option for the DF plus HS range (500–4,000 Nm).
• Additional interfaces: • Magnetic speed sensor (integrated as an option). • Current output (4–20 mA) for compatibility with industrial systems.
• Cable lengths: Customizable (standard: 2 m or 5 m, other lengths on request).
• Special materials: Coatings or steels adapted to corrosive environments (e.g., marine, chemical).
• Measurement units: Configuration in Nm, lb-ft, or kgf·m via the TCU Discover software.
• Certifications: Options for DAkkS calibrations (German metrological accreditation) or ISO 17025 traceability.
• RTS (Reference Transducer System) version: • Passive (without onboard electronics), compatible with external amplifiers (e.g., SAFO from ATESTEO).

• Shielded cables: Standard lengths (2 m, 5 m) or custom, with M12, LEMO, or Sub-D connectors.
• Sealed connectors: IP67/IP68 options for humid or dusty environments.
• Mounting supports: Adapter flanges or mounting plates for integration on existing test benches.
• TCU Discover software: Included configuration and acquisition tool (Windows/Linux compatible).
• Portable display module: Digital screen for local value reading (optional).
• Calibration kit: Weights and accessories for on-site periodic verification.
• Protective housing: For high-speed versions (DF plus HS), reducing imbalance risks.

For specific needs (e.g., integration into an existing measurement chain), consult our technical team for tailored solutions.