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參數(shù)資料
| 型號： | 3B18-01 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Wide Bandwidth Strain Gage Input |
| 中文描述： | 寬帶應(yīng)變計輸入 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大小： | 335K |
| 代理商： | 3B18-01 |
3B18
GENERAL DESCRIPTION
The 3B18 is a wideband (20kHz) single-channel signal
conditioning module which interfaces, amplifies, and filters
signals from balanced 4-arm full-bridge strain-gage bridges
with a resistance from 100
to 10 k
, providing simultaneous
precision voltage and current outputs. The module provides two
user-selectable (via front-panel switches) bridge excitation
voltages: +10 V for bridges with a load impedance down to
300W or +3.33V for 120W bridges or others below 300W.
Module bandwidth is also user-selectable between 20 kHz and
100 Hz, with user-supplied filter capacitors installed in the
optional AC1310 ranging card. The 3B18 protects the computer
side from damage due to field-side over-voltage faults up to
130V rms. In addition, the current output withstands 130V rms
without damage and interfaces user equipment through screw
terminals located on the 3B Series backplane. The 3B18 is a
plug-in, mix-and-match, hot-swappable module which is easily
field calibrated via front-panel zero and span adjustments for
.
Rev. 0 | Page 2 of 8
both voltage and current outputs.
3B Series Custom-Ranging Program
– Externally-
programmable Model 3B18-00, enables the user to configure a
special input range by using the optional plug-on AC1310
ranging card, which houses user-supplied resistors to determine
zero and span. To facilitate selecting resistors, a Windows
program, 3B-CUSTOM, calculates resistor values based on the
user-desired input/output ranges.
A chopper-stabilized low-drift (+1uV/
o
C) input amplifier
assures long-term stability. For user convenience, the zero and
span can be factory configured to meet custom range needs
(Model 3B18-CUSTOM) or can be externally programmed
(Model 3B18-00) via user supplied resistors inserted in the
optional AC1310 plug-on ranging card.
.
Figure 2
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