background image

S. Himmelstein and Company

 

Strain Gage Reaction Torquemeters Installation Guide

© 2017 S. Himmelstein and Company—all rights reserved     www.himmelstein.com

1

INSTALLATION AND OPERATION GUIDE FOR HIMMELSTEIN

STRAIN GAGE REACTION TORQUEMETERS

AND 

TORQUE TRANSFER STANDARDS

WITH BOTH ANALOG AND DIGITAL OUTPUTS

Applies To Models 2270V, 2280V, 2286V, 2287V, CF2800V AND 2300DV

Customer:
Model Number: 

Serial Number:

Factory Reference Number:
Rated Torque (lbf-in):
Torque Overload Capacity (lbf-in):

Factory Settings

Analog Output: ±10.000V at Rated Torque:
Filter Cutoff Frequency (Hertz):
Digital Output Units of Measure:
Special Features:

Readout/Power Supply Furnished: 

(    ) Yes 

(    ) No

  If Yes, Readout Model Number:
  Interconnect Cable P/N: 

Furnished: 

(    ) Yes 

(    ) No

Calibration Data is listed in the attached Calibration Certificate

S. Himmelstein and Company

Designing and Making the Worlds' Best Torque Instruments since 1960

2490 Pembroke Avenue, Hoffman Estates, IL 60169 USA  •  Tel: 847-843-3300  •  Fax: 847-843-8488  •  www.himmelstein.com

Summary of Contents for 2270V

Page 1: ...Number Factory Reference Number Rated Torque lbf in Torque Overload Capacity lbf in Factory Settings Analog Output 10 000V at Rated Torque Filter Cutoff Frequency Hertz Digital Output Units of Measure Special Features Readout Power Supply Furnished Yes No If Yes Readout Model Number Interconnect Cable P N Furnished Yes No Calibration Data is listed in the attached Calibration Certificate S Himmels...

Page 2: ...easured and Computed Data 8 C 4 Test Control 8 C 5 Perform Dead Weight Calibration 8 C 6 Calibration Intervals 8 D Operating and Safety Considerations D 1 Applicability 8 D 2 Allowable Torque Loads 9 D 2 1 Overload Considerations 9 D 2 2 Fatigue Considerations 9 D 3 Allowable Extraneous Loads 9 D 3 1 Bending Loads 9 D 3 2 Thrust Loads 9 D 4 Contaminants 9 D 5 Hazardous Environments 9 Appendices Ap...

Page 3: ...exerts an equal torque upon the first in the opposite direction and about the same axis of rotation To avoid extraneous load errors see Sections A3 D3 the reaction torque path must be through the torquemeter only A correctly installed reaction sensor will accurately measure static and dy namic torque whether the test device rotates or is stationary Under certain conditions some dynamic components ...

Page 4: ...e Load or Driver as in Figures 5 and 6 As noted on those figures the sensor is installed on the device whose torque is to be measured and the ground is made via the other device A 3 Extraneous Loads Any force or moment sensor input other than the reaction torque is an extraneous load Depending on the installation see Figures 7 and 8 these could include bending moments and axial thrust tension or c...

Page 5: ...2 May be re scaled via com port with furnished software to any value from 1 to 10V 3 Clear Tare via com port with furnished software see Note 8 4 Tare and Clear Tare functions are also available via com port 5 Don t use Pin 8 for analog data return and don t use Pin 3 for Power Return 6 Zero torquemeter via com port with furnished software or by simultaneously grounding pins 1 and 6 7 Stored Maxim...

Page 6: ...use a quiet low noise switcher or a linear power supply B 6 Cables Shielded cables should be used to avoid noise pickup The shields should float at the Torquemeter end and all should be terminated at a single earth ground Don t run transducer cables in close proximity to power lines Refer to the above cable diagrams which illustrate correct cable connections B 6 1 Available Mating Cables Cable len...

Page 7: ...nged using the furnished software B 9 Tare Function The Tare function is intended to cancel or zero a torque value that is not due to a permanent shift in the Torquemeter itself For example if you are interested in seeing the result of a gear shift you can Tare the running Torque before the shift and then see the resultant shift torque Caution Unless you remove the Tare Value by using the Clear Ta...

Page 8: ...e CCW Cal Check Zero Torque Invoke Tare Clear Tare Reset Max Mins Save Data to PC Storage Change Units of Measure Select another filter frequency C 5 Perform Dead Weight Calibration Units are shipped with an NIST traceable dead weight cali bration performed in our accredited laboratory a Calibra tion Certificate is shipped with the sensor The results of that calibration are stored in non volatile ...

Page 9: ...eed 50 of the overload rating fatigue failure can occur When operating with peak torques greater than half the over load rating fatigue life is a function of several factors They include the torque magnitude the magnitude and type of extraneous loads simultaneously applied the total number of loading cycles the driveline damping etc D 3 Allowable Extraneous Loads Any force or moment the sensor see...

Page 10: ...se it will remain at that value lbf in default lbf ft ozf in ozf ft N m kN m N cm kgf m kgf cm gf cm In a correct installation the torque load should be carried by face friction not bolt shear To accomplish that and avoid slippage use high strength Socket Head Cap Screws Bolts meeting ASTM A574 13 They should be tightened in ac cordance with the table below Mating flanges must be clean dry and whe...

Page 11: ...s the data you want to change Then append to that message the desired value of the parameter The NGRTM should respond with OK All hexadecimal binary data from the NGRTM is in big endian MSB first format In response to any command the NGRTM returns one of the following string where string is the data requested OK operation was successful Some error message starting with a character Some common erro...

Page 12: ... any data on the NGRTM INFORMATIONAL ONLY MESSAGES CONFIGURATION MESSAGES SHUNT MESSAGES Message Reply Meaning ASindex OK Apply Shunt This equals full scale of the torquemeter index A Remove applied Shunt signal B Apply positive Shunt signal C Apply negative Shunt signal AS int Get Current Shunt status int 0 No Shunt applied 1 Positive Shunt applied 2 Negative Shunt applied Message Reply Meaning C...

Reviews: