Atlas Copco SRTT-B User manual

User guide
Stationary Reaction Torque Transducer (SRTT-B)
9836 5232 01
2012-03
Edition 2.0

IRTT-B User Guide
Safety Instructions
CAREFULLY READ THIS MANUAL PRIOR TO USING
THE PRODUCT AND SCRUPULOUSLY COMPLY WITH
THE FOLLOWING SAFETY INSTRUCTIONS.
When using electric products, basic precautions should always be
taken, including the following:
•Read all instructions before using the product.
•Do not expose the system to excessive moisture (dripping or
splashing), and do not use it near water (near a washbowl, or in
a wet basement) or other liquids.
•The product should not be subjected to continuous or excessive
shock or vibration.
•For minimum electrical interference, use the product far away
from possible sources of electrical noise (arc welding
equipment etc).
•There are no user serviceable parts inside the product. Hence,
under no circumstances should you open or resume to repair
the product. Doing so will invalidate all warranties. Refer all
service needs to your local Atlas Copco service personnel.
WARNING
9836 5232 01 Edition 2.0 3 (8)
Don’t torque the SRTT-B over its torque capacity.
This will cause the yielding of the transducer!
WARNING
The SRTT-B is not suitable for impact type tools
WARNING
Use adapters suitable for the torque applied during the
test. If more than one adapter is used, consider the
maximum torque of the smallest adapter used in the
chain.
EC Declaration of conformity
Individual machinery and safety components:
We Atlas Copco BLM – Paderno Dugnano - ITALY declare under
our sole responsibility that the product to which this declaration
relates, is in conformity with the requirements of the 2006/95/CE
and 2004/108/CE.
Information on Waste of Electrical and Electronic Equipment:
This product and its information meets the requirements of the
WEEE Directive (2002/96/EC) and successive modifications. See
the last chapter of this manual for details.
The products and their components and/or batteries that must be
treated as WEEE when at end of life are marked with a crossed
trashcan according to WEEE (2002/96/EC). See figure below:
In the European Union, this symbol indicates that products must
not be disposed of as unsorted municipal waste but must be dealt
with separately, in accordance with the WEEE Directive
(2002/96/EC).
At the end of its life, this product must be disposed of according to
local regulations.
Collecting properly the wasted parts for consequent shipment to
recycling process, to the treatment and to the environmental
compatible dismiss contributes to avoid possible negative effects
on the environment, on health and helps the re-use and/or recycling
of the materials composing the equipment.
The abusive product dismissing by the user implicates
administrative sanctions according to the present regulation.
Name of issuer Position Signature
Frédéric Genestout General Manager
Ovidio Scarpulla Product Quality Manager

SRTT-B User Guide
GENERAL •Next Calibration date
•Source of Calibration
The stationary reaction torque transducers are designed for testing
wrenches, click wrenches or for tightening tool where rotary action
is not desired during measurement. In case of Shut-Off tool test a
joint simulator as accessories is required.
MODELS
Model Capacity
(Nm) Drive Ordering No.
SRTT-B 0.5 – 13 0.5 ½” square 8059 0946 03
SRTT-B 2 – 13 2 ½” square 8059 0946 09
SRTT-B 5 – 13 5 ½” square 8059 0946 15
SRTT-B 25 – 36 25 36mm hex 8059 0946 28
SRTT-B 50 – 36 50 36mm hex 8059 0946 36
SRTT-B 100 – 36 100 36mm hex 8059 0946 45
SRTT-B 250 – 36 250 36mm hex 8059 0946 54
SRTT-B 500 – 50 500 50mm hex 8059 0946 63
SRTT-B 1000 – 50 1000 50mm hex 8059 0946 75
SRTT-B 2000 – 50 2000 50mm hex 8059 0946 84
The SRTT-B is the new generation of Atlas Copco Stationary
Reaction Torque Transducer with improved durability thanks to its
new mechanical design. The new patented system to fix the joint
simulator on top avoids any possible errors due to the play between
those two devices.
A complete line of accessories and Mechanical Joint Simulator
makes you able to test Shut-Off tools or wrenches with square drive
output.A built in memory stores identification and calibration data
for automatic reading from the measurement instrument.
TECHNICAL
•Torque Measurement Range: 0.5 ÷ 2000 Nm
•Static accuracy: ± 0.25% of rated max. transducer capacity OPERATIONS
•Overload capacity: 125% of rated max. transducer capacity Select the correct size of SRTT-B, which is at least the maximum
torque capacity of the tool to be tested.
•Temperature stability: 0.1% of capacity / °C
•Bridge resistance: 350 ohm Before use be sure that the SRTT-B is well fixed to a structure
which can withstand to the torque you are going to apply. The
transducer can be fastened by means of the bolts or clamped
between the two flat surfaces on the side of its base.
•Operation humidity: 10-75% non condensing
•Operating temperature: 5 to 40°C
The transducer comes with Atlas Copco BLM calibration
certificate. See the mechanical drawing for dimensions.
The calibration data is marked on the transducer label (when
installing the item always use this data, not the nominal values) When SRTT-B 25 Nm or higher is used without a mechanical joint
simulator, install an appropriate adapter in the hexagonal socket.
Lock the tool on the SRTT-B tightening the lever on the SRTT-B.
CONNECTOR PIN OUT Connect the transducer 19 pin cable between the transducer and the
measurement instrument.
Pin Function
A Excitation +5VDC
B Excitation –5VDC
C Signal +
D Signal –
E –
F –
G Eeprom Clock
H
J Eeprom data
K-L-
M-N –
P Ground (angle and eeprom)
R –
S –
T + 8/12VDC eeprom power supply
U-V –
If you use an ACTA instrument the calibration data will be loaded
automatically and no manual entering of the value is required.
If you use another measuring instrument the transducer shunt
calibration value and the angle pulses must be entered manually.
The shunt calibration value is marked on the transducer, the bridge
impedance is 350 Ohm and a 43,575 Ohm resistor is necessary.
Operate the tool in a normal way direct into the transducer socket.
Avoid side forces which may affect the measuring result.
Insert adapter or
joint simulator
Lock before starting the
test (the lever is present
only in models with
hexagon drive)
TRANSDUCER BUILT IN MEMORY
The built in memory consist in a eeprom, which stores the
following data:
•Identification
•Calibration (Nm)
•Full scale value (% of cal. Value)
•Sensitivity (2mV/V)
•Pulses / rev
•Serial Number.
•Date of latest calibration
4 (8) 9836 5232 01 Edition 2.0

SRTT-B User Guide
ACCESSORIES
A series of mechanical joint simulator to be used with the SRTT-B is available:
Model Drive
Rated Capacity
Nm Ordering No.
TJ SRTT-B S – 0.5 ½” square 0,5 8059 0940 01
TJ SRTT-B H – 0.5 ½” square 0,5 8059 0940 02
TJ SRTT-B S – 2 ½” square 2 8059 0940 03
TJ SRTT-B H – 2 ½” square 2 8059 0940 04
TJ SRTT-B S – 5 ½” square 5 8059 0940 05
TJ SRTT-B H – 5 ½” square 5 8059 0940 06
TJ SRTT-B S – 25 36 mm Hex 25 8059 0940 07
TJ SRTT-B H – 25 36 mm Hex 25 8059 0940 08
TJ SRTT-B S – 50 36 mm Hex 50 8059 0940 09
TJ SRTT-B H – 50 36 mm Hex 50 8059 0940 10
TJ SRTT-B S – 100 36 mm Hex 100 8059 0940 11
TJ SRTT-B H – 100 36 mm Hex 100 8059 0940 12
TJ SRTT-B S – 250 36 mm Hex 250 8059 0940 13
TJ SRTT-B H – 250 36 mm Hex 250 8059 0940 14
TJ SRTT-B S – 500 50 mm Hex 500 8059 0940 15
TJ SRTT-B H – 500 50 mm Hex 500 8059 0940 16
TJ SRTT-B 1000 50 mm Hex 1000 8059 0940 17
Adapters:
Model Ordering No.
QAT Accessory adapter SRTT-B 25 to 250 for ⅜” 8059 0978 65
QAT Accessory adapter SRTT-B 25 to 250 for ½” 8059 0978 66
QAT Accessory adapter SRTT-B 500 to 2000 for ½” 8059 0978 67
QAT Accessory adapter SRTT-B 500 to 2000 for ¾” 8059 0978 68
QAT Accessory adapter SRTT-B 500 to 2000 for ½” 8059 0978 69
9836 5232 01 Edition 2.0 5 (8)

SRTT-B User Guide
Dimensions:
SCHEDULED MAINTENANCE
There are no critical maintenance activities required by the transducer.
Annual calibration is still required.
Note: there are no spare parts available for the SRTT-B transducer.
6 (8) 9836 5232 01 Edition 2.0

9836 5232 01
2012-03
Edition 2.0
www.atlascopco.com