fe OMEGA
Aa OMEGA Technologies Compan
TQ501
Rotary Torque Sensor
M1460/0592
GENERAL DESCRIPTION
The OMEGA TQS01 Rotary Torque Sensor is ideal for measuring torques in rotating shafts. An integral slip ring
assembly is used to transfer the electrical signal from rotating electronics to stationary electronics. The slip ring
consists of silver graphite brushes which rub on the rotating ring, providing an electrical path for the incoming
excitation and the outgoing signal voltage. Because of the low signal levels produced by a strain gage bridge,
brushes should be periodically cleaned. For long term measurements, the brushes can be replaced.
HOW TORQUE SENSORS WORK
Torque sensors have an output or sensitivity in mV/V. What this sensitivity/output represents is as follows:
Change in Millivolt output Output/Sensitivity Excitation
from zero load to the full = (example 2.13 mV/V) X (10.0 VDC)
scale capacity of the sensor
(21.3 mV in this example)
Torque sensors rarely have exactly zero millivolts at no load. Most sensors have a small DC offset of a few millivolts,
which is normal. To scale a system, the end-user simply scales the recorder/meter for a full scale range, then
connects the torque sensor.
AVAILABLE MODELS
MODEL RANGE
TQ501-100 0-100 in-lb
TQ501-200 0-200 in-lb
TQ501-500 0-500 in-Ib
TQ501-1K 0-1,000 in-Ib
TQ501-2K 0-2,000 in-Ib
TQ501-5K 0-5,000 in-bb
TQ501-10K 0 - 10,000 in-ib
INSTALLATION INSTRUCTIONS
While the TQ501 Rotary Torque Sensor is a very rugged device, it should not be subjected to torsional loads in
excess of 150% of it's rated capacity. The sensor can be used to measure torque in both clockwise and
counterclockwise directions. When alternating clockwise and counterclockwise torsional loads are applied to the
sensor, there should be no play in either loading direction.
NOTE: The TQ501 sensor is not designed to take off-axis loading. It is very important to have the proper shaft
couplings installed in your system.
ммм (7)
DIMENSIONS (INCHES)
— -—0-—
4.00 -— B— 4.00-—.
NOMINAL DIA. В 00
I~
A DIA.
— Um
| | NU |
, (М) $0. МОМ, Y (ACTIVE END
- KEYWAY TIP cer
E
—— N mr
() FOOT MOUNT =
EARANCE SLOTS OA
FOR (4) "H* DIA. SCREWS
A +.000 | | J +.000
ModeiNo. | -003|B | с | о ЕЙ Е G |H| -o10)] K | Im
ТО501-100 |
TO501-200 | 50 2.25 11.56 [8.50 | 3.26 | 3.26 [0.86 [14 | 2.125 4.000 | 4.75 e
OSOS 25 11.56 | 8.50 | 3.26 /3.26 10. |
TQ501-1K 1.000 1/4
TQ501-2K
TQ501-5K
Ta5oi-1oK | 1500 |275|20219.50|3.50|3.64 [0.74 [ave] 2.500 5.250 6.25 | 3/8
GENERAL CALIBRATION PROCEDURE
(cuRPXSOR SAUERATON Terminal Non-linearity (NAL): computed
YERMINAL from deviations of ascending theoretical
data from a straight line connecting the
oo | TERMINAL FS. QUTPUT ,
zero and full scale points.
Е
GEST FIT THROUGH ZERO Terminal hysteresis (HYS): computed
from the differences between descending
and ascending theoretical data.
=~ BEST FIT THROUGH ZERO FS OUTPUT
DESCENDING
/ Best fit through zero Non-linearity (BF/0):
/ AVERAGE computed from deviations of average
/ ASCENDING theoretical data from a straight line through
BEST FIT THROUGH ZERO NoN-unEaRITy — ZfO With a slope which produces minim um
„” / deviations with average theoretical data.
NLL TERMINAL NON-LINEARITY
= SHUNT CAL OUTPUT
A Best fit through zero Outputs and best fit
a Z 1 HYSTERESIS through zero shunt cal values should be
~~ used when the sensor is assumed to be
7 = — PONT GAL VALUE (TERMINAU linear. If the Instrumentation is capable of
. = Г PHONT CAL VALUE (BEST FIT ue “Ro correcting second order non-linearity, the
0 100 average outputs and shunt cal output
TORQUE (%) values should be used.
WIRING
PIN A: + EXCITATION
PIN B: + SIGNAL
PIN C: - SIGNAL
PIN D: - EXCITATION
NIST TRACEABILITY
The TQ501 sensor is calibrated using a known load (applied to an NIST traceable load cell) through a known distance
(measured by an NIST traceable lever arm). This set-up is considered a tertiary standard, traceable to NIST.
SPECIFICATIONS
RATED OUTPUT:
EXCITATION:
ACCURACY:
LINEARITY:
HYSTERESIS:
REPEATABILITY:
ZERO BALANCE:
OPERATING TEMP. RANGE:
COMPENSATED TEMP. RANGE:
THERMAL EFFECTS
Zero:
Span:
MAX. LOAD
Safe:
Ultimate:
BRIDGE RESISTANCE:
FULL SCALE ANGULAR DEFLECTION:
CONSTRUCTION:
ELECTRICAL:
WEIGHT:
2 mVN nominal
10 Vdc, 20 Vdc maximum
0.18% F.S.
0.10% F.S.
0.10% F.S.
0.10% F.S.
1.0% F.S.
-65°F to 250°F
70°F to 170°F
0.002% F.S./°F
0.002% Rdg./°F
150% F.S.
300% F.S.
350 ohms nominal
1.2 degrees
Nickel plated steel
Mating connector supplied
8 Ibs. (3.6 kg)
Servicing USA and Canada: Call OMEGA Toll Free
OMEGA Engineering, Inc.
One Omega Drive, Box 4047
Stamford, CT 06907-0047 U.S.A.
Headquarters: (203) 359-1660
Sales: 1-800-826-6342 / 1-800-TC-OMEGA
Customer Service: 1-800-622-2378 / 1-800-622-BEST
Engineering : 1-800-872-9436 / 1-800-USA-WHEN
FAX: (203) 359-7700 TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA
Servicing Europe: United Kingdom Sales and Distribution Center
OMEGA Technologies Ltd.
P.O. Box 1, Broughton Astley, Leicestershire
LES 6XR, England
Telephone: (0455) 285520 FAX: (0455) 283912
TA BEA I SRR UTA SECA == La LE NM NT TE
No e - CURE a ho oar ARE Tn EA Ue ES Чи a E 20 Lo a O ST a Te
a RRA них a a ETA a A RETA NS ANA PARE A TA e Yer E E LD ATA BE ET AE ;
+ + asi a re RES TE ANA В Ri AT A - = a E ER + +. rat LA > зоб ON
о TA ATENTO TNT A TDS Lp ae ge RT т a ed oT . E a o
"ел чае " > + 00e BE ds rtf i ed NE Ht Tw beh EE +
OMEGA warrants this unit to be free of defects in materials and workmanship and to give satisfactory service for a period of
13 months from date of purchase. OMEGA Warranty adds an additional one (1) month grace period to the normal one (1) year
product warranty to cover handling and shipping time. This ensures that our customers receive maximum coverage on each
product. If the unit should malfunction, it must be returned to the factory for evaluation. Our Customer Service Department will
issue ar Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit
; she + Hbere- --“-rreplaced at no charge. However, this WARRANTY is VOID ifthe unit shows evidence
"ce of being damaged as a result of excessive corrosion; or current, heat, moisture
a cätlon; misuse or other operating conditions outside of OMEGA's control. Compo-
ee... oo weal Of vii damaged by misuse are not warranted. These include contact points, fuses, and triacs.
We are glad to offer suggestions on the use of our various products. Nevertheless OMEGA only warrants that the
parts manufactured by it will be as specified and free of defects.
OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR
IMPLIED, EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANT-
ABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED.
LIMITATION OF LIABILITY: The remedies of buyer set forth herein are exclusive and the total liability of OMEGA with
respect to this order, whether based on contract, warrantv, negligence, indemnification, strict liability or otherwise,
shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be
liable for consequential, incidental or special damages.
Every precaution for accuracy has been taken in the preparation of this manual, however, OMEGA ENGINEERING, INC. neither
assumes responsibility for any omissions or errors that may appear nor assumes liability for any damages that result fromthe use
of the products in accordance with the information contained in the manual.
22 RETURN REQUESTS / INQUIRIES =~ =
Direct all warranty and repair requests/inquiries to the OMEGA ENGINEERING Customer Service Department. Calitoll free inthe
USA and Canada; 1-800-622-2378, FAX: 203-359-7811; International: 203-359-1660, FAX: 203-359-7807.
BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, YOU MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OUR
CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be
marked on the outside of the return package and on any correspondence.
FOR WARRANTY RETURNS, please have the following FOR NON-WARRANTY REPAIRS OR CALIBRATION, consult
information available BEFORE contacting OMEGA: OMEGA for current repair / calibration charges. Have the
following information available BEFORE contacting OMEGA:
1. P.O. number under which the product 1. Your P.O. number to cover the COST of the
was PURCHASED, repair / calibration, |
2. Model and serial number of the product 2. Model and serial number of the product, and
under warranty, and 3. Repair instructions and/or specific problems
3. Repair instructions and/or specific problems : “you are having with the product.
You are having with the product.
OMEGA's policy is to make running changes, not model changes, whenever an improvement is possible. That way our customers get the latest
in technology and engineering.
OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
O Copyright 1992 OMEGA ENGINEERING, INC. All rights reserved including illustrations. Nothing in this manual may be reproduced in any manner,
either wholly or in part for any purpose whatsoever without written permission from OMEGA ENGINEERING, INC. Printed in U.S.A.
">