This is ± power supply drive type which is easy to use. Ask for details please
 FORCE SENSORS

Two major force (load) detecting sensors are the strain gauge (mainly used for static loads) and the piezoelectric sensor (mainly used for dynamic loads).
Fuji Ceramics force sensors are piezoelectric sensors. They have prior characteristics that are not available in strain gauges.

Features
Compact and high sensitivity: 4mm in thickness; measuring range up to 22.24 kN (= 2000 kg f)
Wide effective range: linear output from low to high loads
Mechanical strength: amount of strain less than 6.4 µm (calculated value for C1K20 under 20 kN); resonant frequency higher than 20 kHz
High durability: simple and reliable structure using a piezoelectric element
Preamplifier incorporated: expensive charge amplifier unnecessary

Application Principle
Behavior monitor for precision press machine
Monitoring of press for spot- welded electrode
Monitoring of crimping force for cable terminal
Measurement of screwing axial tension		 A piezoelectric element such as piezoelectric ceramics or quartz crystal generates an electric charge proportional to the mechanical force applied:
Fuji Ceramics force sensors are a direct application of this characteristic.
Q=d33 F Q / Generated charge
d33 / Piezoelectric constant
( Quartz : 210-12 [ C/N ] )
F / force

Glossary
·Sensitivity
Output per N(newton). Linear outputs are obtained for up to the maximum usable load.
·Maximum usable load (Measurement range )
Maximum load that can be measured by a force sensor in normal operating conditions.
·Allowable load
Should a load exceeding the maximum usable load be applied to a sensor, this sensor does not deteriorate in characteristics. Sensors may not be used continuously under the allowable load.
·Discharge Time Constant (DTC )
A piezoelectric force sensor is characterized by self-discharge. The output voltage presents an exponential curve that changes at a proportional rate for a given length of time. The discharge time constant is the period of time during which the output voltage drops to 36% of the initial value.

Specifications(for compression force)
Model name
C2N40
C1K05
C1K20
C1K503
C1K100
Sensitivity mV/N
12510%
110%
0.2610%
0.110%
0.0510%
Maximum usable load N
40
5k
22.24k
50k
100k
Allowable load N
80
10k
22.24k
Pending
 100k
Linearity %(F.S.)
Pending
3
3
3
3
Discharge time constant sec
Pending
170
170
200
170
Low cutt-off frequency Hz
Pending
0.001
0.001
0.001
0.001
Detective element
Quartz
Quartz
Quartz
Quartz
Quartz
Temperature Range
-20+80
-20+80
-20+80
-20+80
-20+80
Weight (Typ.) gm
Pending
5.3
5.3
16.7
110
Power reguirement
210mA, 2427VDC
210mA, 2427VDC
210mA, 2427VDC
210mA, 2427VDC
210mA, 2427VDC
Accessories Included
Cable 0.35m
-
-
-
Spacer
Size

Size
C2N40

C1K05 / C1K20

C1K503
C1K100
20kN-±VDC

Installation
A sensor is placed tightly between two flat and high stiffness plates (upper and lower plates) so that the load is distributed uniformly over the sensing surface.
Example of the circuit of a line-drive constant-current power supply
The power supply can be designed by the customer.
Attention should be paid to the low cutoff frequency.

Typical characteristic