Features: Wideband (20 kHz) single-channel signal conditioning module. Module Bandwidth is user-selectable between 20 kHz and 100Hz, with user-supplied filter caps installed in the optional AC1310 ranging card. Interfaces, amplifies, and filters signals from balanced 4-arm full-bridge strain-gage bridges. Module provides simultaneous precision voltage and current outputs.
Module circuitry can withstand 130v rms at the input screwterminals All 3B18 series modules are mix-and-match and Hot Swappable
ApplicationIndustrial signal conditioning Industrial signal isolation Industrial signal filterin
Pinout
Specifications
| Supply Voltage (v) |
±15V |
| Input Type |
Gage |
| Input Range |
+/- 5mV to +/- 500mV |
| Isolated |
N |
| Bandwidth (Hz) |
10000Hz |
| Output Type |
I,V |
| Output Range |
+/- 10V,4-20mA, 0-20mA |
DescriptionThe 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 both voltage and current outputs.
3B Series Custom-Ranging Program Externallyprogrammable 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/oC) 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.
The 3B Series Signal Conditioning I/O Subsystem provides a low cost, versatile method of interconnecting real world analog signals to a data acquisition, monitoring or control system. It is designed
3B18 Data Sheet
