3B Scientific Measuring Amplifier S - Manual

3B SCIENTIFIC ® PHYSICS
1
Instrumentation amplifier for student experiments 8532161
Instruction sheet
07/06 SP
1 Current measurement
input
2 Voltage measurement
input
3 Measurement output
4 Supply voltage voltage
5 Zero point calibration
6 Measuring range selector
1. Description
The instrumentation amplifier for students’ ex-
periments is used in conjunction with a simple
voltmeter to measure very small voltages and cur-
rents.
The device consists of an operational amplifier and
a special preamplifier, owing to which a high gain
factor (10
6 ), a low offset voltage and an excellent
long-term stability can be achieved. The amplifier
is used for both AC/DC voltage and AC/DC current. A
conventional voltmeter (measuring range: 1 V DC
or 3 V AC) serves as an indicating instrument. Addi-
tional calibration of the device is not required.
2. Technical data
Operating voltage: 12 V AC
Input impedance: 10 k•
Amplification factor: 10 6
Input connections: Two BNC connectors
Output connections: Two 4-mm safety con-
nectors
Primary fuse: See rear of equipment
housing
Dimensions: 175 mm × 85 mm ×
65 mm
Weight: 250 g approx.