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4.5 Specifications of Strain Input Module
Style Number: S5
Model Code, Number of Input Channels, Terminal Configuration, Shortest
Measurement Interval and Values of Built-in Resistors
Model Code
Number of Input
Channels
Terminal
Configuration
Shortest Measurement
Interval
Built-in
Resistor
DU500-12
DU500-13
DU500-14
10*
10*
10*
Clamp
Clamp
NDIS**
0.5 s
0.5 s
0.5 s
120 Ω
350 Ω
External
*: Requires the space of two slots.
**: Recommended by the Japanese Nondestructive Inspection Association
Method of Input
Non-balanced floating input, with isolation between channels (separated channels)
Resolution of A/D Conversion
Equivalent to reading on 20000 full scale
Integral Time of A/D Conversion
Manual or automatic selection between 20 ms (50 Hz), 16.7 ms (60 Hz) and 100 ms (10 Hz)
However, AUTO does not function if the instrument is the stand-alone DC power supply model,
or the subunit (DS400/DS600) of the DC power supply model. (Selecting “AUTO” will set the
A/D integration time to 20 ms (50 Hz)).
Types of Input
Signals from strain gauge or strain-gauge sensor
Connection Methods
Single-gauge, opposed-side two-gauge, adjacent-side two-gauge or four-gauge configuration
(Configured with built-in DIP switches for DU500-12 and DU500-13)
Applicable Gauge Resistance
100 to 1,000 Ω
The DU500-12 and DU500-13 modules contain 120Ω and 350- Ω resistors, respectively.
Bridge Voltage
Fixed to 2 V DC ( ±5% accuracy with a correction function)
Gauges
2.00 (with scaling capability)
Balancing
Automatic
Range of Balancing
Equivalent to ±10,000 µε (for single-gauge method)
Measuring Ranges and Accuracies
Reference operation conditions
temperature: 23 ±2°C; humidity: 55 ±10% RH; supply voltage 90 to 250 VAC (AC power supply)
/10 to 32 VDC (DC power supply); supply frequency: 50/60
±1% (AC power supply); warm-up
time: at least 30 minutes; when operating, the system must not adversely affect the operation of
other equipment.
Gauge Method
Resolution
Measuring Range
Accuracy
Single-gauge
–2000 to 2000 µε
–20000 to 20000 µε
–200000 to 200000 µε
0.5% of Range
0.3% of Range
0.3% of Range
0.1 µε
1 µε
10 µε
Two-gauge
–1000 to 1000 µε
10000 to 10000 µε
–100000 to 100000 µε
0.5% of Range
0.3% of Range
0.3% of Range
0.1 µε
1 µε
10 µε
–500 to 500 µε
0.5% of Range
0.1 µε
–5000 to 5000 µε
0.3% of Range
1 µε
–50000 to 50000 µε
0.3% of Range
10 µε
The Accuracies and Resolutions of the DU500-12 and DU500-13 models, do not include the influence of the
internal-and contact-resistance of the jumper setup switch.
Four-gauge
4-18
IM DA100-01E