Home > Pacific Instruments’ strain gage amplifier digitiser available from Metromatics

Pacific Instruments’ strain gage amplifier digitiser available from Metromatics

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Pacific Instruments has announced a new eight-channel strain gage and transducer signal conditioning-amplifier-digitiser for its series 6000 Data Acquisition System.

8- channel strain gage and transducer signal conditioning amplifier digitiser – model 6037

  • Automatic ranges gain according to signal level
  • No gain ranging on noise or transients
  • Model 6037 is entirely programmable
  • Hardware based limit alarms
  • 14” rack enclosure with up to 4,096 channels

Model 6037 automatically ranges gain according to signal level for the optimum signal to noise performance. It is specifically designed for large strain gage applications such as airframe structural testing.

Selecting the channel gains to use on a large structural test is a time consuming task. Under or overestimating signal levels results in lost or degraded data.

Automatic gain ranging eliminates these concerns by dynamically scaling the amplifier's gain to the input signal level, providing high output without over scale.

Recent advances in logic array technology and density make it possible to provide good automatic gain ranging. The 6037's gain ranging not only reduces gain but increases it when the signal is below a specified threshold.

Furthermore, the user can program the signal levels at which to reduce or increase gain for each channel independently and can program a period of time which the signal must be above or below the threshold before the gain change takes place.

One among the other features prevents gain ranging on noise or transients. Gain codes for the eight channels on each 6037 are output on two 16-bit phantom channels. By including the phantom channels in the series 6000 scan table, the gain employed for each data sample is known.

PI660 software automatically accounts for gain ranging in displayed and exported data. The 6037 is entirely programmable. Automatic zero and balance replace the tedious manual adjustments usually associated with strain gages and bridge transducers.

A 16-bit ADC digitises the transducer signals at programmable sample rates up to 10K per channel. Individual sample and hold amplifiers provide 50-nanosecond time correlation channel to channel. In addition to the digitised output, each channel has a high-level output for analogue monitoring and recording.

Another useful feature is hardware-based limit alarms. Two sets of programmed high and low alarm levels are monitored for each channel.

Hardware-based alarms provide fast means of detecting conditions that could damage an expensive test article.

A fourteen-inch high, rack-mounting enclosure holds up to 128 channels and with additional enclosures, a system can be expanded to 4,096 channels. It is available with IEEE-488, Ethernet or USB 2.0 interface for programming and data output.

PI660 software for Windows supports the 6037 for setup, control and data recording, distribution and display. An Application Programmers Interface (API) is available for programming custom application software in Visual Basic, LabVIEW, Excel and other languages that support DLL calls.

Pacific Instruments is represented in Australia and New Zealand by Metromatics .

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