Advertisement

TFF Series
Torque Sensor Family Manual
Sensor Solutions Source
Load · Torque · Pressure · Multi-Axis · Calibration · Instruments · Software
www.futek.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the TFF325 and is the answer not in the manual?

Questions and answers

Summarization of Contents

Key Features
TFF Series Description
Measures torque between stationary or resistive moment. Does not fully rotate with applied torque.
Through-Hole Design Features
Features a through hole design with tapered edges for centering and shaft passage.
TFF400 Overload Protection
Updated TFF400 has overload protection up to 300% or 150% depending on capacity.
Fixture and Customization Options
Offers a selection of fixtures and customization for optimal application solutions.
Mechanical Installation
Installation Precautions
Observe precautions to avoid damage: avoid exceeding IP rating, store dry, clean wire cut gaps.
Handling and Zero Output Check
Do not pull by cable; monitor sensor output for zero effects during installation.
Environment and Sensor Handling
Install in a dry, clean environment; handle OEM sensors with extra care due to exposed elements.
Mounting and Installation
Orientation and Cable Influence
Refer to spec sheet for proper orientation to ensure performance and limit cable influence.
Measurement Tolerances
Measurement tolerances depend on decimal format: ±0.1" to ±0.001".
Flatness and Inline Requirements
Loading and support surfaces must be flat and inline; maintain inline torque.
Maximum Moments and Off-Axis Loading
Extraneous Load Information
Use extraneous load information to assess sensor's ability to withstand off-axis loads.
Torsional Stiffness
Torsional stiffness indicates torque required for one radian of angular deflection.
Flange Constraint for Torque Application
To avoid damage when applying torque, only constrain the flange attached to the fastener.
Cable Care and Routing
Cable Material and Length
Cable material type and length can be found online in the sensor description page.
Cable Stress and Securing
Avoid stress and movement on the cable; properly secure it to limit influence.
Strain Relief Bend Radius
Avoid bending strain relief; maintain specific bend radii for dynamic or static installations.
Electrical Installation
Wiring and Connection Types
Utilizes four-wire bare lead, four-pin Lemo, or DB9 with TEDS connections.
Standard Wire Color Coding
Standard four-wire connections use Red (+Excitation), Black (-Excitation), Green (+Signal), White (-Signal).
Lemo Connector Information
Lemo is a quick release connection; connector position may vary for right-angle exits.
TFF Excitation Voltage Levels
Lists maximum excitation voltage levels for various TFF sensor families (e.g., TFF325, TFF400).
DB9 and LEMO Pinouts
Provides pinout details for TFF500 Non-Amplified (DB9) and CC4 (LEMO) connectors.
Shield Usage and Connections
Cable Shield Grounding
Ground cable shielding on one end (sensor or instrument side) to avoid ground loops.
Floating Shield Definition
A floating shield means the cable shield is not connected on the sensor side.
Shield Connection Location
Shield connections are typically located on the sensor's spec sheet.
Calibration
Calibration Recommendation
Yearly calibration recommended; period defined by application, conditions, and usage.
Calibration Services Offered
FUTEK offers NIST and A2LA certified calibrations for total uncertainty.
Online Calibration Resources
Information on calibration services, recalibration orders, and calibration data summaries.
Shunt Calibration Method
Using external resistance across load cell bridge to generate a known output for setup or comparison.
TEDS (Transducer Electronic Data Sheet)
TEDS stores calibration info on sensor/cable for use with TEDS-capable instruments.
Troubleshooting
High Zero Output
Possible causes include preload, overload, or off-axis load. Check fixtures and loading.
Non-responsive Zero Output
Check power, wiring, connections, and sensor bridge resistance for opens or shorts.
Non-responsive High Output
Verify power, wiring, and sensor continuity. Check for overload or internal shorts.
Incorrect Output for Applied Load
Ensure correct load placement, fixture security, and support, and verify calibration use.
Troubleshooting (Continued)
Zero Output Drift
Causes include unstable power, temperature changes, preload, or humidity. Check stability.
Creep in Output Under Load
Caused by unstable loads, power, temperature, or support. Check fixtures and surfaces.
Noisy or Unstable Output
May result from noisy power, unstable load, or proximity to high power equipment. Check grounds.
Further Support Resources
Instrument Support Information
Support information for FUTEK instruments available online at http://www.futek.com/manuals.aspx.
Recalibration and Calibration Data
Links for recalibration orders and access to calibration data summaries.
Technical Support and RMA
Contact FUTEK for technical support or to send in sensors for evaluation and repair.
General Contact and Warranty
Information on FUTEK contact details and warranty terms.

Table of Contents