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Checking for accuracy

 

The Torque Meter and torque transducers are factory calibrated and should be checked on 
a regular basis.  We recommend that, provided the transducers are used according to this 
manual, they be re-certified yearly.  Since the frequency of use, among other factors, may 
affect the calibration,  the user must determine the best calibration interval.  
 It is important to use the correct arm length since arms that are too short may create 
excessive bending loads that are not present during normal operation.

Recommended torque arm lengths:

4” arm (wheel)   up to  100 in lb transducers
10” arm (wheel)  250  in.lb   to  50 ft. lb.  
24”  

1

50 ft.lb. to 250 ft.lb.

48”  500 ft. lb. and up

These arm lengths closely represent the length of typical wrenches that will be used on 
the transducers.  They also allow for usually no more than 150 lbs of weights, which also 
represents the “typical” amount of force required to generate the torque with a wrench. 
Do not use a 10” arm to calibrate a 250 ft. lb. transducer. This would require 300 lbs of 
weights, this is not good for the transducer and is not representative of the typical weight 
needed to generate 250 ft.lb. applied by a person.  Most conventional torque wrenches are 
designed to be long enough to allow no more than 150-175 lb person to generate the force 
required to generate the needed torque. Using the above arm lengths will be consistent 
with this philosophy.

The accuracy of the meter is such that any incorrect zero caused by out of balance arms,  
mis-alignment or sloppy adapters used on the torque arm system may cause a 
“perceived”out of tolerance condition.  This can happen when you use a female drive 
torque arm on a female drive transducer and use a male-male adapter in between with too 
much play. It can also happen when you use an adapter to reduce a ½” female drive arm 
down to a 3/8” female drive using an off-the-shelf adapter. For this reason you must 
always use the proper drive arm with the transducer.  If the transducer is a ½” female 
drive then you must use a ½” male drive torque arm to eliminate errors.

Even benches that are not flat or deflect during high load calibrations are unacceptable.  
In this case the transducer will not be perpendicular with the weights and this mightl 
show on the meter (yes the meter is that sensitive), resulting in a possible out of tolerance 
condition.

Procedure for checking accuracy

Transducers are calibrated to within .5% (bench type) or 1% extension type 
IV +/- .1  at the factory.  If you require greater accuracy you can bypass the 
smart chip in the transducer and perform a manual calibration on 
transducers.  This will account for variations in  torque arm calibration 
systems.

IMPORTANT!
YOU 

MUST

 ALWAYS DO THE FOLLOWING:

MOUNT THE TRANSDUCER SO THE CABLE IS POINTING DOWN.

PUT THE METER IN 

TRACK

 MODE.

1. NEVER USE A TORQUE ARM THAT IS NOT BALANCED ABOUT ZERO.  A HIGH PRE-
LOAD,OR AN OPPOSITE DIRECTION PRE-LOAD  REDUCES ACCURACY AND IS NOT 
INDICATIVE OF REAL APPLICATIONS. A SLIGHT PRE-LOAD MAY, HOWEVER,  BE 
NECESSARY TO TAKE UP DRIVE  TOLERANCES IN THE DIRECTION TO BE TESTED. A 1 
OR 2 LB HANGER WEIGHT SHOULD  BE SUFFICIENT.

2. ALWAYS APPLY FULL SCALE TORQUE, THREE TIMES, WITH WEIGHTS, IN THE 
DIRECTION YOU ARE TESTING PRIOR TO RUNNING AN ACCURACY TEST.

3. AFTER STEP 2 ABOVE, WAIT AT LEAST 30 SECONDS OR  FOR THE WEIGHT HANGER 
TO STABILIZE. SWINGING HANGERS WILL GIVE AN INCORRECT ZERO READING AND 
MAY THROW OFF ACCURACY.

4. AFTER STEP 3 ABOVE PRESS THE ZERO BUTTONS (

EVEN IF THE DISPLAY SHOWS 

“000.0”

)  DO NOT PRESS THEM AGAIN UNTIL YOU START A COMPLETE NEW TEST 

CYCLE (STARTING FROM STEP 1 ABOVE).

5. AFTER STEP 4 ABOVE APPLY 10% LOAD, LET THE HANGER STABILIZE  AND CHECK 
READING.  DO NOT REMOVE THE WEIGHTS WHEN FINISHED CHECKING AT THIS 
POINT.

6. AFTER STEP 5 ABOVE APPLY ADDITIONAL WEIGHTS

 

TO THE HANGER TO BRING 

THE TORQUE TO 50% OF LOAD AND CHECK READING. DO NOT REMOVE THE 
WEIGHTS WHEN FINISHED CHECKING AT THIS POINT.

7. AFTER STEP 6 ABOVE APPLY ADDITIONAL WEIGHTS

 

TO THE HANGER TO BRING 

THE TORQUE TO 100% OF LOAD AND CHECK READING. 

THE MAJORITY OF ACCURACY PROBLEMS OCCUR DUE TO INCORRECT LOADING 
SEQUENCE,  ZERO PROCEDURES AND TORQUE ARMS THAT ARE NOT IN BALANCE 
WITH A SLIGHT PRE-LOAD IN THE DIRECTION TO BE CHECKED.

Summary of Contents for TTS-1000

Page 1: ...1 TS 1000 TTS 1000 Torque Tester Operation Manual Rev 2 2008...

Page 2: ...h it from the competition For example there is a first peak mode that allows you to test and calibrate micrometer clicking type torque wrenches However just having this software mode is not enough you...

Page 3: ...nteror computer 10 To erasememory 10 To setfilters 10 To changethe tolerancevalue 11 To makehigh low limits thedefaulttolerance method 11 To changethedisplay clear reset method 12 Enteringthelimitsval...

Page 4: ...nsducer mode allows easy adaptation to third party transducers Software selectable filters Auto convert engineering units Super large 5 8 high digits Memory for up to 1350 torque data External power R...

Page 5: ...n other units Increases value of blinking digit when setting numbers Selects next digit when setting numbers Selects next function when in Menu mode Scrolls through data in memory when recalling memor...

Page 6: ...Belt mount Suggested mounting positions Loosen the 4 locking screws prior to adjusting Reverse bracket and hang on a thin shelf Typical bench mounting Vertical wall Under a shelf Over a ledge 6...

Page 7: ...icrometer torque wrench and disregard further input This mode is used to test and calibrate click type torque wrenches To change the units of measure 1 Press the units key until the arrow points to th...

Page 8: ...value 1 Press the recall key 2 Press the clear key when finished viewing and return to operation Note You can press the save key to save the recalled torque value before pressing the clear key This al...

Page 9: ...w memory values do the following 1 Press menu keys set up icon comes on 2 Press the next key once or until the recall mem icon is on if you miss keep pushing the next key until recall mem shows 3 Pres...

Page 10: ...ave key to select the erase memory function the display will blink giving you a second chance to decide if you really want to erase memory 4 Press the save key again to confirm and erase the memory or...

Page 11: ...rance vs High Low Go No Go Calculation To make high low limits the default tolerance mode 1 Press the menu keys 2 Press the next key 5 times or until tolerance shows 3 Press the save key to select the...

Page 12: ...you do not have to continually reach up and clear the display manually Entering the limits tolerance settings 1 From the operation mode press and hold the limits on off key If you have set the functio...

Page 13: ...time you will Zero the unit Make sure that there is no load on the transducer when pressing the zero keys The meter will not read torque until approximately 2 of the transducer range has been reached...

Page 14: ...s at least 25 greater in range than the expected torque it will apply This may help avoid accidental over torque The torque transducers that are supplied with the torque meter will accept up to 50 ove...

Page 15: ...h and will not tip wen applying torque Bolting the bench to the ground may be necessary on higher range transducers Make sure the cable is pointing down 4 O CLOCK POSITION when mounted on a bench This...

Page 16: ...nough to allow no more than 150 175 lb person to generate the force required to generate the needed torque Using the above arm lengths will be consistent with this philosophy The accuracy of the meter...

Page 17: ...G HANGERS WILL GIVE AN INCORRECT ZERO READING AND MAY THROW OFF ACCURACY 4 AFTER STEP 3 ABOVE PRESS THE ZERO BUTTONS EVEN IF THE DISPLAY SHOWS 000 0 DO NOT PRESS THEM AGAIN UNTIL YOU START A COMPLETE...

Page 18: ...you do not select the custom transducer number the meter will revert to the calibration data on the chip inside the transducer You can tell if the system is using the smart chip inside the transducer...

Page 19: ...l now show CCW FS which is prompting you to apply the Full Scale weights to the arm in the counterclockwise direction Apply the full scale weights in the counterclockwise direction stabilize the weigh...

Page 20: ...e smart data not the custom data when it is turned on Select the custom transducer in this case Do this by pressing the transducer keys and pressing the next key until the display shows the transducer...

Page 21: ...minutes without use This mode still uses battery power so best to turn the meter off if not used for any length of time Press the clear key to resume operation when the power down mode is active depic...

Page 22: ...8 ounces Stand Folding and adjustable bench wall or shelf stand supplied standard Memory Up to 1 350 torque data Includes data number torque value and units Communication Direct to serial computer or...

Page 23: ...eter beeps when pressing save button 1 There may be a load on the transducer when power was turned on Remove load and press Zero Tare or Remove load and turn meter off then on 1 Memory is full Clear M...

Page 24: ...3 Keypad 810043 2 PCB Assembly 810044 LCD 810023 Battery 9 Volt 45 0001 Stand Adjustable 810046 Cable Rs232 065150 Adapter Serial RJ6 Rs232 772084 Power Supply 9V 300mAh 97 0002 Cable Transducer up t...

Page 25: ...protective boot Dallas Semiconductor 2430 2 wire memory chip installed in each transducer programmed with the following data CW mv v at full scale and 10 of full scale CCW mv v at full scale and 10 of...

Page 26: ...rt Number BM 2000F 1 x 1 85 0117 BM 1000F 1 x 1 BM 600F 3 4 x 3 4 85 0103 BM 500F 3 4 x 3 4 BM 250F x 85 0098 BM 100F 3 8 x 3 8 85 0097 BM 50F 3 8 x 3 8 BM 250i 1 4 x 3 8 85 0120 BM 100i 1 4 x 1 4 85...

Page 27: ...275 6 1 4 1 4 x 1 4 BMI 250 2 75 2 6 2 175 275 6 3 8 3 8 x 3 8 BMF 50 2 75 2 6 2 175 275 1 0 3 8 3 8 x 3 8 BMF 100 4 0 3 6 3 0 44 2 7 1 2 x 1 2 BMF 250 4 0 3 6 3 0 44 2 8 1 2 x 1 2 BMF 500 4 0 3 6 3...

Page 28: ...re at a later date Do not use a transducer if it has been over torqued Never apply torque in a situation where tool breakage may result in a fall or slip resulting in personal injury Pulling on the wr...

Page 29: ......

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