|
|
|
|
Model 9355, Modular High-Performance Instrumentation Amplifier
|
|
|
|
|
|
Features
- Voltage & current excitation
- Remote sensing & excitation interrupt
- Two-range automatic balance
- DAC shunt calibration
- 4-step, bipolar resistive shunt calibration
- Gains 1 to 10,000
- Voltage substitution calibration
- 300 Volt common mode
- Eight low-pass filters, dual outputs
- Digital excitation & output monitors
- Windows software
Description
Series 9300 are fully programmable, modular signal conditioning amplifiers for use with transducers and other low-level signal sources. An on-board microprocessor automates operation, reducing setup time and assuring high-quality measurement data. Programming and control are by IEEE-488 interface using a high-level programming language or Windows software. The optional control panel enables setting and display of operating parameters locally with display of excitation voltage and current and amplifier output.
The 9355 is a transducer amplifier with a guarded 2 to 10 wire input. It has bridge completion, programmable constant voltage and constant current excitation with remote sensing and excitation interrupt, automatic balance, shunt calibration, programmable gain instrumentation amplifier and programmable filter. DAC controlled shunt calibration with 4096 steps is standard and 4-step, bipolar double resistive shunt is optional.
Within the 9355, bridge completion and calibration components mount on a plug-in, front panel installed completion card that has a holder for channel identification data. Switches on the completion card set transducer specific operating parameters and identification. Completion cards are available for special requirements such as dynamic strain, 28 Volt excitation, voltage-mode charge, input attenuation and many other standard and customer-specific applications.
Gain is programmable from 1 to 10,000 with 0.05% resolution and 32 preset steps. Ten gain steps are factory calibrated providing ±0.1% accuracy. The remaining gain steps may be user calibrated or employed as variable gains for engineering units calibration. The amplifier operates from grounded or floating sources providing 120-dB rejection for common mode voltages to ±300 Volts.
Buffered Data and Tape outputs supply ±10 Volts full scale. Each output may be selected for wideband or filtered response. The standard filter is a four-pole, Bessel low-pass with eight programmable bandwidths and wideband. Output and excitation can be read over the computer interface and on the optional control panel. The control panel sets and displays excitation, gain and filter; controls balance, zero, calibration and input modes and displays the output and excitation voltage or current level.
Channels may be programmed individually or as a group using IEEE-488 or RS232. Adapters are available for Ethernet. Programmed operating parameters are kept in non-volatile memory and are automatically restored when the system is powered up or reset. PACWin93 control and display software is optionally available for operation under Windows 2000/XP. User programming is supported by a high-level instruction set and National Instruments LabView driver. PI660 software includes a feature for programming the 9355s when used as the front end for Pacific’s Series 6000 data acquisition system.
Ten channels, each with integral isolated power supply, mount in a 7-inch high rack enclosure. Multiple enclosures can accommodate up to 160 channels on each bus address. Interface adapters are available for Ethernet and USB 2.0.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Gain
|
|
1 to 10,000 with 0.05% resolution. Ten factory calibrated gains with ±0.1% accuracy: 1, 2, 5, 10, 20, 50, 100, 200, 500, and 1000. Total of 32 gain steps, 10 of which are preset at factory. Balance may be programmed by user.
|
|
|
|
Gain Stability
|
|
±0.02% for six months. Temperature coefficient is ±0.004%/ºC maximum.
|
|
|
|
Gain Linearity
|
|
±0.01 %
|
|
|
|
Input Impedance
|
|
50 Megohms shunted by 200 pF (100K Ohms when AC Coupling is enabled - Option P only).
|
|
|
|
Input Protection
|
|
±50 Volts differential, and ±350 Volts common mode.
|
|
|
|
Common Mode
|
|
120 dB DC to 60 Hz for gain 1,000 and above. At lower gains, CMR is 63 dB plus gain in dB. CMR decreases at a rate not exceeding 6 dB/octave from the specified value at 60 Hz. (350 Ohm source unbalance).
|
|
|
|
CM Voltage
|
|
±300 Volts DC or peak AC operating.
|
|
|
|
Zero (Amplifier)
|
|
Automatic zero to ±1 µV RTI or ±0.5 mV RTO whichever is greater at power up and change of gain or filter setting.
|
|
|
|
Zero Stability
|
|
±5 µV RTI, ±0.5 mV RTO at constant temperature. Temperature coefficient is ±1 µV/ºC RTI and ±0.15 mV/ºC RTO. Zero shift for any gain or filter setting is less than ±2 mV RTO.
|
|
|
|
Source Current
|
|
±1 nA, ±0.5 nA/ºC
|
|
|
|
Noise (10 Hz)
|
|
1 µV RTI plus 0.5 mV RTO, peak (350 Ohm source or bridge).
|
|
|
|
Noise (10 kHz)
|
|
2 µV RTI plus 0.3 mV RTO, RMS (350 Ohm source or bridge).
|
|
|
|
Noise (100 kHz)
|
|
4 µV RTI plus 0.6 mV RTO, RMS (350 Ohm source or bridge).
|
|
|
|
Bandwidth
|
|
100 kHz (-3dB) for all gains to 1,000. Bandwidth decreases proportional to gain above 1,000.
|
|
|
|
Slew Rate
|
|
6 V/µS
|
|
|
|
Settling Time
|
|
75 µS to within ±0.1% final value.
|
|
|
|
Overload Recovery
|
|
100 µS to within ±0.1% for a 10 times overload to ±10 Volts.
|
|
|
|
Overload Indication
|
|
Latched status flag set and front panel LED illuminated when output exceeds ±10.5 Volts. LED is illuminated for 500 mS or duration of overload, whichever is longer. Status flag reset by program command.
|
|
|
|
Analog Output (Amplifier)
|
|
±10 Volts at 10 mA. Output impedance less than 1 Ohm.
Tape Output: ±10 Volts at 10 mA. Output impedance less than 1 Ohm.
Monitor (Analog): Terminals on the front panel for data output.
Monitor (Digital): Output voltage displayed on control panel and returned by program command.
Bandwidth: Jumper selected wideband or filtered response for each output.
Protection: Protected against continuous short. No instability with capacitive loads to 0.22 µF.
Output Isolation: Less than 100 nA RMS leakage to power or rack ground at 60 Hz line frequency.
|
|
|
|
|
|
|
|
|
|
|
|
|
Control Panel
|
|
Monitor mode: Four-digit display is menu selected to indicate gain, filter frequency, excitation or output and calibration state.
Program mode: Menu selection of all operating parameters and modes. Three switches provide up and down menu or parameter selection and enter.
LED indicators: Indicate status of calibration, overload and power.
|
|
|
|
Programming
|
|
The interface coupler is installed in the Master rack enclosure for program control using IEEE-488 or RS232 protocols. The instruction has the format of a command followed by multiple parameters. All programmed operating parameters and calibration status can be read back by program command.
|
|
|
|
Rack Enclosures
|
|
Enclosures for 19-inch wide RETMA rack mounting hold ten transducer amplifiers using 7-inches of panel height. Depth is 26-inches. The initial ten channels require a Master enclosure which provides the IEEE-488 & RS232 interfaces. Subsequent channels, up to 160 total, mount in Slave enclosures that are provided with interconnecting cables to the Master enclosure. Input, output, interface, and power connectors are mounted on the rear panel. Rack enclosure frame is connected to power ground. A screw fastener secures each channel. 120 or 230 VAC, ±10%, 47 to 400 Hz, 15 Watts. Panel indicator is illuminated when power is on and interface is enabled.
|
|
|
|
Connectors
|
|
Input: R93-010 has 15-pin, 1/4 turn twist lock MS 3102 style input connectors.
Mating connectors are supplied.
Output: Isolated BNC, 2 per channel.
|
|
|
|
Operating Temperature
|
|
0 to +50 ºC
|
|
|
|
Storage Temperature
|
|
-25 to +71 ºC
|
|
|
|
Humidity
|
|
Up to 95% without condensation.
|
|
|
|
Height
|
|
7 in
|
|
|
|
Width
|
|
1.63 in
|
|
|
|
Depth
|
|
17.75 in
|
|
|
|
Weight
|
|
5 lb
|
|
|
|
|
|
|
Ordering Information
|
|
9355Q - Transducer Amplifier-Filter with Control & Display Panel
9355QS4 - Transducer Amplifier-Filter with Control & Display Panel, Four-Step Double Shunt Calibration.
R93-010-M - 10-Channel Master Enclosure, IEEE-488/RS232 interface, MS Input Connectors.
R93-010-S - 10-Channel Slave Enclosure, MS Input Connectors.
9300-020 - Bridge Completion Card (Standard)
9300-021-01 - Low Impedance Charge Completion Card
9300-021-03 - 100:1 Balanced Attenuator Completion Card
9300-021-04 - Voltage Completion Card
9300-021-05 - Bridge, Single Shunt Cal Completion Card
9300-021-06 - Voltage, AC Coupled Completion Card
9300-035 - Transducer Amplifier
9300-036 - Transducer Amplifier
9300-090 - Bench Service Fixture
FM3A - Fan Assembly, 115 VAC
AMP93 - Maintenance Software
PACWin93A - Operating Software
|
|
|
|
|
|
- Input configuration determined by plug-in completion card, no rewiring to change gage types
- Versatile 2 to 10-wire shielded input handles all gages
- Line powered - isolated excitation and outputs
- Programmable voltage or current excitation, 0.01% stability
- Remote sensing improves accuracy by regulating excitation at the gage
- Automatic voltage-injection balance does not decrease input range even for large unbalances
- Software enabled automatic calibration using voltage substitution and/or shunt. Four-step shunt using zero force plug-in resistor card is optionally available
- Gains from 1 to 10,000 in calibrated steps or user selected with 0.05% resolution
- Four-pole Bessel low-pass filter with eight programmable bandwidths from 10 Hz to 30 kHz and wideband (100 kHz)
Other filter choices available - IEEE-488 & RS232 interfaces for programming and control of up to 160 channels
|
|
|
|
- Program and display gain, filter frequency, excitation and calibration mode
- Monitors amplifier output, excitation voltage and current
- Menu buttons select and move up or down through menus on bright LED display. Enter button selects submenus and enters parameter values
- Displays channel number, error messages and user programmed alphanumeric messages
|
|
|
|
- Ready-to-run, Windows 2000/XP compatible, no user programming required
- Program channels by selecting them from a transducer database that contains the operating parameters
- Use Channel Specification window to view and change channel programming
- Monitor output, excitation voltage or current on scrolling strip chart and tabular windows
|
|
|
|
- High-level resident instruction set, National Instruments LabView driver
- Operating parameters and status can be read back for setting verification
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
