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C104-03N SPR SERVO-PLUS RESEARCH CONTROL UNIT HIGH PERFORMANCE SERVO-PLUS SERVO-STRAIN

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MAIN FEATURES
Possibility to perform tests in load, displacement
and strain rate control.
Firmware and software for standard tests already
included.
Fully customizable test ramps.
Possibility to set different sampling frequencies at
desired thresholds during the tests.
Fully automatic test frame selection between 2
frames, with the possibility to add electrovalves for
automatic selection up to 4 frames.
Complete with inverter device, reducing noise
pollution and decreasing heating and mechanical
stress (see p. 223)

The High Performances Servo-plus Servo-strain Research Control Unit allows to perform tests where the highest performances are required
from a control system.
In addition to the common standard tests, which are already included in the control unit firmware, customized ramp sequences can be set
from the user, measuring and displaying load, stress, displacement and strain related graphs.
It features a servo-controlled proportional valve which allows to promptly react to sudden drops of specimen resistance, keeping all the test
parameters set by the user, and high-resolution channels allow to describe accurately the specimen behavior during such drops.
The possibility to pre-set different sampling frequencies at desired thresholds during the tests, makes possible to avoid the post processing
phase where customers filter and reduce the number of data where high sampling frequency is not needed, that is when specimen
behavior is almost constant.
This control unit is suitable also for dynamic tests, at low frequencies up to 0.1 Hz.
All these possibilities make this control unit the best choice for research laboratories that need to perform tests not yet described by any
standard.
The control unit is supplied without PC and printer, to be ordered separately.
Power supply: 230V 1ph 50-60Hz
Dimensions: 650x660x1260 mm
Weight: 90 kg approx.

HYDRAULIC SYSTEM SPECIFICATIONS
– Max hydraulic pressure: 700 bar
– 4 pistons pump granting oil supply from 0.05 to 1.35 l/min
– Forced ventilation oil cooling system
– Pump oil filter with automatic alarms in case of low oil level or
dirty oil filter
– Servo controlled proportional valve with high control frequency
– 2 electronic valves to automatically select the test frame
– Inverter device
HARDWARE AND FIRMWARE SPECIFICATIONS
– 8 channels, each one able to control the test and each one suitable
to connect load sensors (load cells or pressure transducers),
displacement transducers (potentiometric, full bridge, LVDT,
magnetostrictive) and deformation transducers (extensometers,
strain gauges)
– Each channel effective resolution 19-bit, 524˙288 divisions
– Closed loop control with PID parameters adjustable in real time
during the test by the user
– Control frequency can be adjusted up to 200 Hz
– 7” LCD touch-screen
– Sampling frequency can be adjusted up to 4 kHz
ELECTRICAL CHARACTERISTICS OF THE CHANNEL
CONDITIONERS
– Feed LVDT ± 15V
– Output signal from -2.5 to +2.5V DC
– Data acquisition synchronized on all channels
– Calibration of the 8 channels in divisions (up to 40 steps), with
polynomial fun¬ction which allows the best approximation of
readings accuracy over the whole test range
SOFTWARE
– Possibility to control the test by remote via PC
– Software includes the test standards to perform compression,
flexure and splitting tensile tests
– Rocks and concrete elastic modulus tests (see p. 68 and 284)
can be performed, either by following the test standards or by
setting fully customized cycles.
– Toughness of fiber reinforced concrete, energy absorption of
sprayed concrete tests can be performed.
– FRC tests (see p. 305) can be performed (Deflection, CMOD,
CTOD and flexural strength).
– Triaxial test on rocks and Stress-path test procedure, if
completed with C104NLP system for the lateral pressure application
and it is accessories listed at p. 70.

C104-03P
KIT of rigid pipes for connection between C104-03N and a flexure
frame, needed accessory for research tests on FRC specimens.
C115N
AUTOMATIC HYDRAULIC VALVE
Installed on the pumping unit of the Servo-Plus machines to automatically
select one additional testing frame. Upon request, it is
possible to connect up to max four different frames. Our technical
dept. is at your disposal for any specific demand.
4 x C115N (2 x C115N + 2 already included in C104-03N) 4 electronic
valves to automatically select the test frame among 4 frames
H009-01
PERSONAL COMPUTER
Complete with LCD monitor, keyboard, mouse, connection cables,
it is applicable with all the Matest testing machines equipped with
digital display measuring system. The PC supply includes the installation
and the setting up of the purchased Software (see p. 18).

C127
ON-BOARD GRAPHIC PRINTER
On-Board printer for digital models.

C128
BENCH LASER PRINTER
For the graphic and test certificate printing, applicable on all
Matest testing machines with digital display measuring system.
The connection is direct by parallel interface also without PC.

ACCESSORIES TO COMPRESSION AND FLEXURAL TESTING MACHINES
C097-01
DUAL LOW CAPACITY DIGITAL RANGE

(From 1/3 to 1/20 of the nominal range), complete with Appropriate
pressure transducer, hydraulic installation and cock, fitted on
testing machines equipped with digital display measuring unit.
This solution offers very high accuracy also for measurements of
low strength, which is necessary to perform compression tests on
mortar specimens, flexural tests on concrete beams, split cylinder
test on cylinder and cube specimens, tests on kerbs, slabs etc., by
utilizing a concrete compression machine.
C097-02
DUAL LOW CAPACITY DIGITAL RANGE 0-300 KN
Complete with strain gage load cell, cables, fitted on concrete
compression testing machines equipped with digital display measuring
system.
This solution eliminates the weights of the piston and lower
compression platen, paking set frictions etc., granting very high
accuracy (Class 1; max. error within ± 0.5%) in the measuring
range 30…300 kN.

C105
DEVICE WITH CENTRAL
SCREW
Very practical to adjust the light
between the compression platens
of a machine, according to
the height of the specimen to be
tested. Recommended solution
for machines equipped with big
sized platens. This device can be
foreseen on all models of concrete
compression machines,
except High Stability models.

C097-05
CLASS 1 STARTING FROM 1% OF THE FULL RANGE
Applicable only to digital machines. By following a special calibration
procedure, Matest is capable to grant the Class 1 practically on
the full range, upgrading the machine to be used for a considerable
number of applications where low strength value are expected,
including:
– Lightweight concrete, or early strength concrete
– Small size samples, soil cement mixtures
– Flexural and tensile tests, slabs, kerbs, etc.
C097-08
OFFICIAL ACCREDIA HARDNESS CERTIFICATE
(Equivalent UKAS, ENAC, DAKKS, SAS, COFRAC etc.) of upper and
lower compression platens. Minimum hardness: 55 HRC.

H009-01
PERSONAL COMPUTER
Complete with LCD monitor, keyboard, mouse, connection cables,
it is applicable with all the Matest testing machines equipped with
digital display measuring system. The PC supply includes the installation
and the setting up of the purchased Software (see p. 18)

C128
BENCH LASER PRINTER
For the graphic and test certificate
printing, applicable on all Matest
testing machines with digital
display measuring system.
The connection is direct by parallel
interface also without PC.

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