MODEL 632 STRAIN GAGE AMPLIFIER ASSEMBLY

Features

• 16 channels per rack
• Auto-balance
• Selectable bridge completion
• Adjustable bridge excitation

Description

Sixteen channels of the Model 632 strain gage amplifiers are mounted in a 19" wide x 7" high x 20" deep rack adaptor. An unregulated DC supply is internally mounted at the rear of the rack to energize all 16 channels. Each channel has its own on-board regulators to provide the voltage required for the logic circuits, op-amps, and bridge excitation. In this manner, a load fault to any module will not affect the remaining units.

The Model 632 provides all of the operating features normally provided in this type of instrument. In addition it offers as a standard feature a switch selectable auto-balance circuit.

Specifications

Bridge configuration: Quarter, half, and full bridges, switch selectable; can also be used as general purpose differential amplifier

Bridge completion: Switch selects either 120 ohm or 350 ohm internal precision completion resistors

Bridge excitation: Front panel adjustable, 0 to 15 VDC; front panel on/off switch; BNC provided for voltmeter monitoring

Bridge balance:	Auto	Remote control activation of bridge balance cycle for all modules in rack; LED indicates unbalanceable condition
	Manual	Front panel trimpot allows manual balance adjustment

Gain:Front panel switch selectable gains of 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, 2000, 5000 with gain vernier

Frequency response: DC to 100kHz

Calibration: Shunt cal activated by remote command; internal calibration resistors provided for 120 ohm and 350 ohm bridges

Signal output: ±10V max, 100mA peak load

Output noise: 5 microvolts RMS RTI max, DC to 100kHz at G=1000

Power: Integral rack power supply module provides unregulated ±24V

Mechanical: 19"W x 7"H x 20"D, 16 module rack adapter, Model 4007-134

Carrying case: 2 module desktop case, Model 4010-109

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