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Model 6152, 4-Channel Strain/Bridge Transducer Amplifier - Filter-Digitizer


Features

  • Programmable input configuration 1/4, 1/2 & full bridge
  • Programmable excitation with remote sensing
  • Shunt & voltage calibration
  • Automatic zero & balance
  • Gains 1 to 5,000 with 0.05% accuracy
  • Buffered 10 Volt analog output

Description

The 6152 input module has four channels of high performance signal-conditioning amplifiers for strain gages and bridge transducers. Each channel has programmable excitation with remote sensing, voltage calibration, local or remote shunt calibration, programmable gain instrumentation amplifier and four-pole low pass filter. Each channel provides a buffered analog output.

The 6152 is used with quarter, half and full bridge transducers, potentiometers and low-level voltage signals in demanding applications such as load control. The standard filter a four-pole or six-pole filter with programmable cutoff frequency from 4 Hz to 5 kHz in 1 Hz steps.

Voltage substitution using an external voltage standard is provided for traceable gain calibration. Internal or external shunt calibration is provided for transducer calibration. Transducer balance, zero and gain calibration are automatic by program control.




Overview  · Input  · Excitation/Transducer Power  · Amplifier  · Filter  · Digitizer  · Calibration  · Mechanical  · Ordering Information 

Overview

Measurement Type
Bridge
Strain Gage

Analog Bandwidth
10 kHz

Excitation/Transducer Power
Voltage

Filter
4-Pole
6-Pole

Analog Output
Buffered Analog Output


Input

Configuration
4 channels, 2 to 8 wire with guard shield. Bridge configuration is programmable for 1/4, 1/2 and full bridge, 120 Ohm and 350 Ohm.

Balance
Automatic by program control. Balance accuracy ±0.05% of range, ±1 mV RTO. Stability ±0.02% for 8 hours, ±0.005%/ºC. Range set by resistor up to 10 mV/V, 2 mV/V (for 350 Ohms) installed.


Excitation/Transducer Power

Voltage Excitation
Programmable from 0-12 Volts in 1 Volt ±0.1% steps, with 3.3 mV resolution adjustment.

Current
50 mA limited to 70 mA.

Regulation
±0.01% for ±10% line and no-load to full-load using remote sensing.

Stability
±0.01%, ±0.005 %/ºC

Excitation Noise
200 µV peak-to-peak.

Monitor
Calibration mode applies excitation voltage to amplifier input.


Amplifier

Gain
Programmable from 1 to 5,000 in 1, 2, 3, 5 steps with ±0.05% accuracy.

Gain Stability
±0.01%, ±0.004%/ºC.

Impedance
50 Megohms, shunted by 1,000 pF.

Protection
Instrumentation amplifier ±50 Volts differential and Common Mode. Bridge ±15 Volts Common Mode.

Analog Output (Amplifier)
±10 Volts full scale, wideband or filtered. Accuracy is ±0.05%.

Linearity (Amplifier)
±0.01% for gains < 1,000, ±0.02% for gains 1,000 and higher.

Common Mode
74 dB plus gain in dB up to 106 dB, DC to 60 Hz for ±10 Volts.

Zero (Amplifier)
Automatic to ±1 µV RTI, ±0.5 mV RTO.

Zero Stability
±5 µV RTI, ±1 mV RTO, ±1 µV/ºC RTI, ±0.2 mV/ºC RTO. Short term: ±2 µV RTI, ±0.4 mV RTO.

Source Current
±25 nA, ±0.01 nA/ºC

Noise (10 Hz)
0.1 µV RMS RTI plus 0.5 mV RMS RTO

Noise (Wideband)
2 µV RMS RTI plus 0.5 mV RMS RTO

Bandwidth
10 kHz (-3 dB) or better.

Slew Rate
5 V/µS

Recovery
800 µS to ±0.1% for 10X overload to ±10 V.

Output
Buffered Analog Output, ±10 Volts full scale, wideband or filtered. Accuracy is ±0.05%.


Filter

Programmable Filter
Four or Six-pole, low pass Butterworth. Continuously programmable 4Hz to 5kHz, 1.25Hz resolution, 3% accuracy. 0.5 mV RMS RTO.

Other
Other filter characteristics and cut offs available.


Digitizer

Digitizer Note
See Series 6000 to add the following onboard digitizing capability.

Resolution
16-bits, two's complement output.

Sample Rate
0 to 20 kS/s per channel

Digitizer Linearity
±2 LSB (±0.006%)

Continuity
Monotonic to 15 bits.

Alarms
Two alarms each with programmable upper and lower limits and persistence checked on each ADC sample.


Calibration

Shunt
Two steps shunt, internal or external connection, 174k Ohm 0.1% and 357k Ohm 0.1%

Voltage Substitution
Alternate input for external calibration source. Programmable attenuator with steps of 1, 0.1 and 0.01, ±0.02% accuracy. Output of the attenuator is provided for calibration.

Zero Calibration
Amplifier input disconnected and shorted.


Mechanical

Mounting
Occupies one slot in Series 6000 enclosures.

Connectors
Input is 50-pin Type D output is 9-pin Type D.

Operating Temperature
0 to +50 ºC


Ordering Information 

Ordering Information
6152B-PF4/5K-BU4 - 4-Ch Strain-Bridge, PF 4Hz-5kHz 4-Pole Butterworth, 2-Step Shunt.
6152B-PF4/5K-BU6 - 4-Ch Strain-Bridge, PF 4Hz-5kHz 6-Pole Butterworth, 2-Step Shunt.
6152-PF4/5K-BU4 - 4-Ch Strain-Bridge, PF 4Hz-5kHz 4-Pole Butterworth.
6152-PF4/5K-BU6 - 4-Ch Strain-Bridge, PF 4Hz-5kHz 6-Pole Butterworth.


 DOWNLOADS 

Model 6152
(PDF, 97KB)


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