Futek TFF Series User manual

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Load · Torque · Pressure · Multi-Axis · Calibration · Instruments · Software
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TFF Series
Torque Sensor Family Manual

TFF Torque Sensor Family Manual 2
Sensor Solution Source
Load · Torque · Pressure · Multi-Axis · Calibration · Instruments · Software
www.futek.com
Table of Contents
Key Features ......................................3
Mechanical Installation ..............................4
Mounting and Installation............................5
Maximum Installation Torque .........................6
Cable Care and Routing .............................7
Electrical Installation ................................8
Shield Usage and Connections........................9
Calibration........................................9
Troubleshooting ..................................10
Further Support Resources ..........................12

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Key Features
TFF Torque Sensor Family Manual 3
The TFF (Torque Flange to Flange) sensor series
measures the torque between a stationary or
resistive moment or torque. Since the TFF sensor
measures a static moment, it does not fully
rotate with an applied torque.
The updated TFF400 has a built-in overload
protection system allowing up to 300% for the 5
to 1,000 in-oz capacities, and 150% for the 100
to 500 in-lb capacities.
The standard TFF line can be modified or
customized to meet your requirements. Contact
FUTEK’s application team for further information.
The TFF series features a through hole design
with tapered edges, which helps to center the
sensor.
Although not officially part of the TFF line,
our QTA141 is a unique micro reaction torque
sensor. It features a 1Nm capacity with a 0.866
in. outer diameter and 0.394 in. height.
The through hole design allows for a shaft (or
other rotating items) to pass through the sensor.
In order to create the optimal solution for your
application, our team has designed a large
selection of fixtures for the sensor including
square-drives, and flanges.

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Mechanical Installation
The following precautions should be observed
to avoid damage to the TFF sensor during
installation and usage.
• Avoid conditions that exceed the sensor’s
spec sheet IP rating.
• Store in a dry area without fixtures.
• Sensors with overload protection wire
cut gaps, if exposed, should be regularly
cleaned to maintain proper deflection
path.
1. Do not pull on or carry sensor
by cable.
2. Monitor sensor output for
effects on zero output during
installation to avoid damage.
3. Install in a dry, clean
environment.
4. TFF325 and TFF350 are OEM
type sensors and require extra
care in handling as they have
exposed elements.
TFF Torque Sensor Family Manual 4
OK
Non-loading surface (cover), do not
contact while loading
Active end (top of loading flexure)
Fixed end (bottom support of flexure)

TFF Torque Sensor Family Manual 5
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1. TFF325 and TFF350 come with
dowel pin holes to help with
alignment.
2. TFF325 had additional flats
that can assist with fixture
attachment and sensor
placement.
3. Loading surface must be flat
and inline.
4. Support surfaces must be flat
and inline
Mounting and Installation
• Refer to the sensor spec sheet for
information on proper torque sensor
orientation for best performance and
to limit cable influence.
• Measurements are called out on the
sensor spec sheet and have the following
tolerances based on the number of decimal
points present.
DECIMAL FORMAT TOLERANCE
0.x ±0.1"
0.xx ±0.01"
0.xxx ±0.005"
0.xxxx ±0.001"
• Bolt hole placements are called out in a Bolt
Circle Diameter (BCD) which is an imaginary
circle passing through the centers of all the
bolts in a round pattern.
• Maintain inline torque if the fixture doesn’t
include coupling or flexible joints
90°