Gefran CM Data Sheet
CM
LOAD CELL FOR COMPRESSION APPLICATIONS
MECHANICAL DIMENSIONS
Main features
• Range of measurement: from 100 to 50.000 Kg
• Accuracy class: 0,2%
• All stainless steel construction
• Corrosion resistant
• Internally generated calibration signal
• Grade of protection: IP67 (DIN 40050)
CM series load cells are strain gauge transducers used to
measure loads in static and dynamic applications, in
compression, with high accuracy.
They are machined from a single block of metal, so the
primary sensing element, the mountings and the case
contain no welds allowing smaller dimensions and an
enhanced grade of protection. The configuration of the point
of measurement, with 8 strain gauges, reduces errors caused
by imperfect applications of the load.
Typical applications of load cells connected in parallel are:
silos, hoppers, large weighing platforms.
The stainless steel construction is suitable for use in
aggressive environments in the chemical and petrochemical
industries.
ø A
ø B
ø C
ø D
E
H
K
L
L1
L2
ø M
ø N
R
VITI
Nm*
TECHNICAL DATA
0,2%
100...50.000 Kg
2mV/V
<± 0,2% FSO
< ± 0,2% FSO
< ± 0,06% FSO
< ± 1% FSO
80%FSO ± 1%
< ± 0,01% FSO°C
< ± 0,01% FSO°C
< ± 0,01% FSO°C
700 Ohm
700 Ohm
> 10 GOhm
10 V
15 V
-10...+50°C
-20...+60°C
-30...+80°C
130% Ln
100% Ln
150% Ln
> 300% Ln
< 0,2 mm
Cable: IP67
Connector: IP65
VPT02A10-6PT2
6x0,25 / 5 m.
Stainless steel
Accuracy
Nominal full scale load (Ln)
Nominal output at FSO
Output tolerance at Ln
Combined errors: Non linearity
Histeresis, Repeatibility
Creep (after 30 min. at Ln)
Zero load out of balance signal
Calibration signal *
Thermal drift in Sensitivity
compensated Zero
range Calibration
Nominal input resistance
Nominal output resistance
Isolation resistance
Nominal supply voltage
Maximum supply voltage
Compensated temperature range
Maximum temperature range
Storage temperature range
Permitted static load
Permitted dinamic load
Maximum applicable load
Rupture load
Maximum elastic deformation at Ln
Grade of protection (DIN40050)
Electr. connections: Connector
Screened cable
Elastic element material
* The exact value is indicated on the instrument nameplate
100
2000
87
6,5
10,5
100
6
11,7
15,7
45,7
30
13,5
20
24
30
6XM6
9
3500
7000
98,5
10,5
16,5
120
10
17,5
21,5
51,5
30
13,5
24
30
30
6XM10
60
10000
30000
102,2
13
19
126
12,5
14
54
40
17
35
50
6XM12
100
50000
125
17
25
155
16,5
16
77
61
27
45
-
100
6XM16
200
Ln (Kg)
Dimensions mm. (± 0,1) * Recommended torque with UNI 5931 screws of
resistance class 10.9 according to UNI 3740.
LOAD
INTRODUCTION
DIRECTION
BALL R
BALL R
ELECTRICAL CONNECTIONS
CONVERSION TABLE
If the transducer is supplied complete with
prewired connection cable, the colour code
is that indicated in the table.
Cells connected in parallel
In systems that use several cells, the parallel connection automatically sums the loads on each individual cell.
Using this method of measurement, the maximum load will be the sum of the loads on the individual cells and the
sensitivity will be the average value of these cells.
It is important that the user ensures that no cell is stessed beyond its maximum rating under any load condition.
Kg
1
0.102
0.454
N
9.807
1
4.448
Lb
2.205
0.225
1
* The screen is isolated from the
transducer body.
It is recommended that the ground is
connected at the instrument end.
6x0.25 Screened cable
VPT02A10-6PT2
MALE CONNECTOR
SIGNAL +
SIGNAL EXCITATION +
EXCITATION -
CALIBRATION SHUNT
CONNECTOR
OUTPUT
CABLE
OUTPUT
Red
Black
White
Green
Blue-Orange
Red
Yellow or Black
White
Green
Yellow-Green
Red
Yellow or Black
White
Green
Yellow-Green
Yellow-Green
Red
Yellow or Black
White
Green
SHUNT BOX
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