Manufacturer of electronic instrumentation including signal conditioners, custom power supplies, computer controlled amplifiers and computer controlled signal conditioning instrumentation.

MODEL 664 DUAL CHANNEL DYNAMIC STRAIN GAGE AMPLIFIER MODULE

MODEL 664 DUAL CHANNEL DYNAMIC STRAIN GAGE AMPLIFIER MODULE

Description

The Model 664 is a two-channel computer-controlled dynamic strain gage amplifier module. The following parameters are displayed and are adjustable: gain, zero, external cal, filter, excitation and excitation monitor. Each channel has its own isolated constant current excitation source.

 

Specifications

Amplifier channels: Two independent AC-coupled channels
Gain settings: Fixed log steps 1, 2, 5,10, 20, 50, 100, 200, 500, 1000, 2000, 5000
Gain accuracy: ±1%
Frequency response: Six-pole Butterworth lowpass, selectable at 5kHz, 20kHz, 40kHz or bypassed; 5Hz highpass, single pole
Bridge mode: ¼ bridge dynamic mode; selecting 0mA disconnects excitation, leaving AC-coupled differential amplifier
Excitation: Excitation sources isolated from amplifier output common; programmable from 1.0-25.0mADC in 0.1mA steps; up to 12.5VDC compliance voltage available
Excitation monitor: Loop compliance voltage is scaled 50% and routed to amplifier output so external DAQ can calculate loop resistance
Fault indication: One green LED per channel turns red if amplifier exceeds ±10V
Memory: On-board EEProm stores serial number, calibration date, etc.
Mechanical: 5.5” x 13.5” board, used with Model 5020-102 rack