VDA168-ILA
VARIABLE DIGITAL INLINE AMPLIFIER 168
Main features
• Dynamic and static applications
• Used for any kind of strain gage sensors
• Digital amplified output from 0...±10VDC
• High resolutions (24-Bit ADC, 16-Bit DAC)
• External Reset Input available
• Various mounting options
• Compact solid aluminium housing (IP62)
This digital amplifier measures at the strain gage bridge
eight times per millisecond which gives a high oversampling range.
This gives a stable signal output with high accuracy and
reproducibility. The digitalised signal can be trensformed
into various outputs.
TECHNICAL DATA
Input Bridge resistance 120...1000Ω
Signal input range (FS) 0.1...3mV/V
Span adjustment ±200% FS
Zero adjustment ±500% FS
Resolution ADC 24-Bit
Resolution DAC 16-Bit
Sampling rate 8kHz
Output rate 800Hz
Low-pass lter 100Hz
Output signal 0...±10VDC
Noise < 10mV
Accuracy < ± 0.2% FS
Accuracy of zero point < ± 0.1% FS
Linearity < ± 0.02% FS
Output resistance 10Ω
Reset time > 25ms
Reset voltage 15...28VDC, 0VDC
Supply voltage 20...28VDC
Supply current < 60mA
Inverse polarity protection Yes
Accidental short-circuit protection Yes
Operating temperatur range -10...+70°C
Storage temperatur range -10...+70°C
Temperature coefcient at 10°C < 0.1 (0.05 typical)
Protection class IP62
EMC IEC 801/2
Case material Aluminium
Weight 70g
MECHANICAL DIMENSIONS
Housing type: ILA-S
Housing type: ILA-M
RESET FUNCTIONS
24V Type
0V Type
Reset control input
Minimum reset pulse duration >25ms
Reset 15...28V
Operate 0V/open
Reset control input
Minimum reset pulse duration >25ms
Reset 0V
Operate 5...28V/ pen
ELECTRICAL CONNECTIONS
SENSOR:
half bridge
full bridge
CONTROLLER
ORDER CODE
DIGITAL STRAIN-GAUGE
AMPLIFIER VDA168 - ILA
- - -
-
Housing type
Without mounting ange S
With mounting ange M
Output range of used sensor
Full bridge
version
2/4 bridge
version
dene your range
με up to 1000 με;
(100
0.5 mV/V up to 3 mV/V)
Full Bridge 4
2/4 bridge 2
0.5 mV/V 0005
1.0 mV/V 0010
2.0 mV/V 0020
με
500
με
1000
Bridge
0500
1000
XXX
Feature
N peak-hold negative
P peak-hold positive
O no features
Reset
HO External reset (24V)
HR
LO
External reset (24V),
with power-on reset
External reset (0V),
without power-on reset
External reset (0V),
LR
with power-on reset
ST Static (no external reset)
Example: VDA168 - ILAS - 0020 - 4 - HR - P
is a VDA168-ILA strain-gauge amplifier for four strain gauges, with a 3m cable, with an output signal of 0...10V
(with sensitivity sensor 2mV/V), with power-on reset and with peak-hold positive
GEFRAN spa reserves the right to make any kind of design or functional modification at any moment without prior notice.
DTS_VDA168-ILA_12-2013_ENG
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