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參數(shù)資料
| 型號： | 6B11 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Isolated, Field Configurable Analog Input |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, XMA |
| 封裝： | 2.300 X 3.100 X 0.750 INCH, MODULE |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 416K |
| 代理商： | 6B11 |
6B11 / 6B11HV
GENERAL DESCRIPTION
The 6B11 and 6B11HV are single-channel isolated signal-
conditioning modules which accept the outputs from
thermocouple, milli-volt, voltage, and process current signals.
Unlike conventional signal conditioners, the 6B11 and 6B11HV
are complete microcomputer-based data acquisition systems. A
major advantage of the onboard microcontroller is its ability to
be remotely reconfigured for various sensor types and input
ranges.
Rev. 0 | Page 2 of 8
Synchronized Sampling – The synchronized sampling
command allows data to be sampled simultaneously from all
6B11, 6B11HV, 6B12, 6B12HV modules and all 6B50 boards in a
6B Series system. Each module or board stores the data in a
separate register within its microcontroller and can access the
data with a separate command.
Software Configuration – The 6B11 and 6B11HV linearize and
compensate J, K, T, E, R, S and B thermocouples. Additionally,
these modules also digitize milli-volt and voltage ranges from
+15mV to +5V as well as 0 to +20mA process current inputs.
Software is used to configure the 6B11 and 6B11HV modules
for address, input range, baud rae, data format, checksum status
and integration time. All programmable parameters are stored
in the nonvolatile memory of the module.
Each analog input signal is conditioned and scaled by a
programmable-gain amplifier and digitized by a 16-bit
integrating converter under microprocessor control. The
digitized value is passed serially across a magnetically isolated
barrier (1500 V rms – Model 6B11, 2500 V rms – Model
6B11HV) and clocked in by a custom controller chip. The on-
board microprocessor then converts the data into engineering
units as determined by the channel parameters. In between
conversions, the microprocessor auto zeros the offset and gain
by monitoring the on-board temperature and compensating for
reference drift. Cold junction compensation (CJC) is also
performed at this stage. The 6B11 and 6B11HV use
compensation factors to ensure the highest accuracy possible.
.
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Figure 2
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