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NK BIOTECHNICAL CORPORATION
DATA ACQUISITION SYSTEM
The NKB DAQ2001 functions as an integrating voltmeter, A-D converter,
excitation voltage source, and communications interface for up to 8
strain gage based sensor channels. Coupled with an industry standard
PC running NKB software, it helps the user assure reliability and
traceability of the sensor. Power is provided either through an AC
adapter, or a rechargeable battery pack. Telemetric data links are
available for acquisition of remote data.
| TECHNICAL DATA |
| DAQ2001/STRAIN GAGE BRIDGES |
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| Type |
Resistive type full bridge transducer |
| Bridge resistance |
350 Ohms maximum |
| Connection |
4 wires (+/- input, +/- output) |
| Cable length |
30 ft. maximum |
| Sensitivity |
Custom set at factory |
| Excitation voltage |
5 or 10 volts (jumper selectable |
| Input |
Factory set from +/- 2.0mV to +/-2.0V |
| Input resistance |
15Megohms minimum (differential) |
| SIGNAL PROCESSING |
|
| Resolution |
12 bit maximum, including sign |
| Linearity error |
+/-0.01% of Full Scale |
| Overall accuracy |
+/-0.25% minimum |
| Span temperature drift |
+/- 5PPM/°C maximum |
| Zero temperature drift |
+/- 5PPM/°C maximum |
| Output measurement rate |
Software controlled, 60 samples/channel/second default |
| Frequency response |
Flat from DC to 500Hz |
| Over voltage protection |
+/-35V with interface adapter |
| COMMUNICATION |
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| Interface |
RS-485, RS-422, or RS-232 |
| Baud rate |
9600, 19,200, 38,400 |
| Protocol |
1 start bit, 8 data bits, 1 stop bit, no parity |
| ENVIRONMENTAL |
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| Size |
2.9in. L x 2.4 in. W x 0.75 in. H |
| Connection |
25 pin D type female connector |
| Specification temperature range |
-10 to 40° |
| Operating temperature range |
0 to 40° |
| Storage temperature range |
-40 to 86° |
| Power requirement |
13.5 to 15 Volts DC |
| Relative humidity |
0-95%, non-condensing |
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