NEMA C-Face Hollow Torquemeters and 2

BULLETIN 7070F
Series CF2700
NEMA C-Face, Hollow Torquemeters
and 2-Wire Torque Transmitters
For Measurement and Control
Use Model 703 or 733 with CF2700V; Model 706 or 766
with CF2700X to display one or two channels of torque
respectively. See Bulletins 374 or 377.
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Sense Motor or Load Torque, NIST* Traceable
Simple, Low Cost Installation
High Safety Margins – Handle 500% Overloads
No Bearings or Rotating Parts
0 to ±10 Volt or 4-20mA Outputs
Models for NEMA 56C thru 286TC Frames
* NIST traceable calibration performed in our accredited laboratory (NVLAP LAB Code 200487-0). For details visit www.himmlstein.com or the accreditation link @ www.nist.gov.
S. HIMMELSTEIN AND COMPANY
2490 Pembroke Avenue, Hoffman Estates, IL 60169 USA • Tel: 847/843-3300 • Fax: 847/843-8488
© 2003, 2005, 2007 S. Himmelstein and Company
www. himmelstein.com
Series CF2700 Torque Sensors
Provide static and dynamic torque feedback from a motor
or, its’ load. The device whose torque is being sensed must
have a mounting meeting NEMA C-Face standards or, a
suitable adapter. The sketches illustrate sensor installation.
Install the torquemeter on the device whose torque is
desired, and foot mount or otherwise mechanically ground
the other device (load or motor).
CF2700V Torquemeters and
CF2700X 2-Wire Torque Transmitters
The CF2700V Torquemeter outputs a zero to ±10 Volt
analog of torque. It uses a 5-wire connection; signal,
signal common, remote cal, +power and power return.
The CF2700X 2-Wire Transmitter outputs a 4-20mA or
12±8mA current, user selectable. It uses 2-wires; +power and power return. Power input for both versions is a
single, unregulated, fused and reverse polarity protected
dc supply. If needed, Himmelsteins’ Series 700 instruments provide power, engineering unit display, classify
torque, capture max/mins, interface a PC and much
more. Specify a Model 703 for a CF2700V or a Model
706 for a CF2700X. See Bulletins 374 and 377.
Enhanced Performance -- Code C
CF2700V and CF2700X sensors are available in standard
(Code N) and enhanced (Code C) performance versions.
Code C performance is enhanced in the following areas:
linearity, hysteresis, temperature compensation, and
extraneous load crosstalk. See page 4 for details.
Series CF2700 Torque Sensor Installed To Feedback Load Torque
CF2700's are strain gage sensors. They measure torque
whether the shaft is rotating or stationary, are very stiff,
have very low deflection and are bidirectional, i.e., their
output polarity follows the torque direction. Because they
measure reaction torque, the torque path should be
through the sensor only. Avoid parasitic torque shunts; they
can cause measurement errors. See Bulletins 770 and
7070.1 for more information. Where higher accuracy is
needed or, if dictated by installation constraints, we can
provide MCRT Non-contact rotating torquemeters in
capacities from 10 oz-in to 4,000,000 lb-in.
Series CF2700 Torque Sensor Installed To Feedback Motor Torque
Simple, Low Cost Installation
The sensor fits between a C-Face motor and load. When
the load shaft is female, use the optional coupling shaft;
see the pictorial on the facing page. When the load shaft
is male, use a conventional double-flex coupling. Nothing
else is needed for mechanical installation.
Product Feature Summary
• Static and dynamic response for
motor or load torque
• NIST traceable, NVLAP* accredited,
dead weight calibration
• Full bidirectional operation
• No bearings or rotating parts
• Simple, low cost installation
• Robust strain gage sensor handles
overloads of 5 times rated capacity
• Very high stiffness and very low
torsional deflection
• 0 to ±10 Volt or a 4-20mA output
• DC to 1,000 Hertz bandwidth
• NIST* traceable calibration circuitry;
remote on CF2700V
• Single, unregulated supply; fused
with reverse polarity protection
• No slip rings, brushes, optical paths,
or radio transmitters
• Long, maintenance-free life
• Compatible with plc and pc controllers, and data acquisition systems
• Standard models for NEMA 56C thru
286TC motor frames
* NIST traceable calibration performed in our accredited laboratory (NVLAP LAB Code
200487-0). For details visit www.himmlstein.com or the accreditation link @
www.nist.gov.
CF2700 NEMA C-Face Hollow Torquemeters & 2-Wire Transmitters
MODEL NO.1
NEMA
Motor
Frame TORQUE RANGE
ALLOWABLE
TORQUE
OVERLOAD
TORSIONAL
STIFFNESS
(from face-to-face)
MAXIMUM
EXTRANEOUS LOAD
MAX
TORSIONAL
DEFLECTION
WEIGHT
THRUST (F)
BENDING
(W X D)
(lb-in)
(lb-in)
(n-m)
(lb-in)
(n-m)
(lb-in/rad)
(n-m/rad)
(degrees)
(pounds)
(pound)
CF2756_ _(5-1)
50
5.65
250
28.2
48,000
5,420
0.060
5.5
200
400
CF2756_ _(1-2)
100
11.3
500
56.5
135,000
15,250
0.042
5.5
250
600
200
22.6
1,000
113
385,000
43,500
0.030
5.5
300
800
500
56.5
2,500
282
560,000
63,300
0.051
14
500
1,500
CF2756_ _(1-3)
1,000
113
5,000
565
1,600,000
181,000
0.036
14
1,000
2,000
CF2756_ _(2-3)
2,000
226
10,000
1,130
4,550,000
514,000
0.025
14
2,000
4,000
CF2756_ _(5-3)
5,000
565
20,000
2,260
18,000,000
2,034,000
0.016
14
5,000
10,000
CF2782_ _(2-2)
200
22.6
1,000
113
250,000
28,300
0.046
11
350
1,500
500
56.5
2,500
282
950,000
107,300
0.030
11
500
2,000
1,000
113
5,000
565
2,800,000
316,300
0.020
11
1,000
3,000
2,000
226
10,000
1,130
3,800,000
429,400
0.030
27
2,000
4,000
CF2756_ _(2-2)
CF2756_ _(5-2)
CF2782_ _(5-2)
CF2782_ _(1-3)
CF2782_ _(2-3)
CF2782_ _(5-3)
56C
143TC
145TC
182TC
184TC
213TC
215TC
254TC
256TC
5,000
565
25,000
2,820
15,000,000
1,700,000
0.019
27
5,000
10,000
CF2782_ _(1-4)
10,000
1,130
50,000
5,650
44,000,000
5,000,000
0.026
27
10,000
20,000
CF2784_ _(2-3)
2,000
226
10,000
1,130
7,200,000
813,500
0.016
17
2,000
5,000
5,000
565
25,000
2,820
14,500,000
1,640,000
0.020
44
5,000
10,000
10,000
1,130
50,000
5,650
42,000,000
4,750,000
0.014
44
10,000
20,000
CF2784_ _(5-3)
CF2784_ _(1-4)
284TC
CF2784_ _(2-4)
20,000
2,260
60,000
6,780
119,000,000 13,450,000
0.010
44
20,000
40,000
Notes: 1. Replace the first underscore with an X for the Transmitter version or a V for the Torquemeter Version. Replace the second underscore with the performance code, either N or C. Thus, the Model
Number for a 100 lb-in 56C Frame Torquemeter with standard performance is CF2756VN(1-2); the 2-Wire Transmitter version is the CF2756XN(1-2). See the back cover.
Outline Dimensions in Inches
C Diameter is thru bore
Sensing Pump Torque
Using The Optional
Coupling Shaft
Extraneous Load Definition
W = weight of the supported motor/load + ½ the shaft coupling weight.
F = Thrust Force, if any.
D = Distance from the device (motor or load) being monitored center of gravity to the grounded sensor flange.
Any force or moment the torquemeter sees other than the reaction torque input is an extraneous load. Depending on
installation (see illustrations), these could include bending moments and axial thrust (tension or compression). The
tabulation summarizes the maximum safe extraneous loads that can be applied to the torquemeter assuming they are
applied singly. Crosstalk errors will typically be low (see overleaf) and, if constant, can be electrically zeroed.
Specifications, Series CF2700
NEMA C-Face Hollow Torquemeters and 2-Wire Torque Transmitters
Series CF2700V Torquemeters
Series CF2700X
2-Wire Transmitters
Performance
Performance
Parameter
Standard
Code N
Enhanced
Code C
Standard
Code N
Enhanced
Code C
Nonlinearity (end point method, % of Range)
# ± 0.2
# ± 0.1
# ± 0.25
# ± 0.1
Hysteresis (% of Range)
# ± 0.2
# ± 0.1
# ± 0.25
# ± 0.1
Nonrepeatability (% of Range)
# ± 0.1
# ± 0.05
# ± 0.1
# ± 0.05
# ± 0.25
# ± 0.1
# ± 0.3
# ± 0.1
# ± 2% of
Thrust in lbs
# ± 1% of
Thrust in lbs
# ± 2% of
Thrust in lbs
# ± 1% of
Thrust in lbs
# ± 2% of
Bending in lb-in
# ± 1% of
Bending in lb-in
# ± 2% of
Bending in lb-in
# ± 1% of
Bending in lb-in
# ± 0.1
# ± 0.05
# ± 0.1
# ± 0.05
Combined Error
(Nonlinearity, hysteresis and nonrepeatability, % of Range)
Typical Thrust Crosstalk1 (lb-in)
Typical Bending Crosstalk1 (lb-in)
Calibration Error (% of Range at 75 deg. F, NIST traceable)
Remote, connect Cal line to Common.
Calibration Circuit Actuation
By internal Cal Switch
Temperature Effect On Zero (% of Range per deg. F)
# ± 0.006
# ± 0.002
# ± 0.006
# ± 0.002
Temperature Effect On Span (% of Reading per deg. F)
# ± 0.006
# ± 0.002
# ± 0.006
# ± 0.002
+75 to +175 deg. F (+23.9 to +79.4 deg. C)
Compensated Temperature Range (deg. F)
Useable Temperature Range (deg. F)
-25 to +185 deg. F (-31.7 to +85 deg. C)
Storage Temperature Range (deg. F)
-65 to +200 deg. F (-53.9 to +93.3 deg. C)
Output Signal
Output Signal Polarity (for CCW torque through the
torquemeter, polarity changes when torque is CW)
0 to ±10 Volts
(Load Resistance => 10kΩ
Source Resistance < 1Ω)
4-20mA or 12±8mA, user selectable.
See Note 2 for
maximum Loop Resistance.
Positive
Internal switch sets output current to
increase or decrease.
Measurement Bandwidth3
dc to 1000 Hertz
Supply Voltage4 (fused and reverse polarity protected)
Supply Current
4
15 to 26 Volts, dc, unregulated
80mA, max
20mA, max
< 0.01% of Range/Volt
Power Supply Effect
Each are ±10% of Sensor Full Scale, nominal
Zero Control and Span Control Ranges
A = +Power, B = Power Return, C = N/C,
D = Signal Common, E = Signal, F = Remote Cal
Connector Pinouts
A = +Power
B = Power Return
Notes:
1.
2.
3.
4.
5.
Torquemeter oriented at 3 or 9 o’clock with the connector pins in the vertical position; see sketches. Crosstalk signals can be electrically zeroed.
Model CF2700X allowable loop resistance is zero to 700 Ohms maximum with a 26 Volt Supply or, [(50)*(Supply Voltage) - (600)] Ohms.
Bandwidth is determined by on board signal conditioning. The sensors’ self resonant torsional frequency is greater than 1kHz.
Himmelstein Models 703 and 706 will provide power, engineering unit display, classify limits, capture max/mins, interface a PC, etc. See Bulletins 374 and
377 for details.
Specifications and dimensions are subject to change without notice.
Order Number:
C F2 7 5 6
Model No.
Output Code (V = ±10V, X = 4-20/12±8mA)
Performance (N = standard, C = enhanced)
V
N (1-2)
Range