Products > Integrated Conditioning Acquisition & Control Systems > Integrated Conditioning Acquisition & Control System I/O Modules > 6000 Series Analog I/O Modules > Model 6018  
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Model 6018, 8-Channel RTD/Potentiometer Amplifier-Filter-Digitizer



Features

  • RTDs, potentiometers & other current excited transducers
  • Programmable current excitation
  • Gains 1 to 5,000 with 0.05% accuracy
  • Automatic zero & gain calibration
  • Four-pole, low-pass filter
  • Up to 10 kS/s per channel with 16-bit resolution
  • Two alarms with programmable upper & lower limits

Description

The 6018 input module has eight channels, each with programmable constant current excitation, programmable gain instrumentation amplifier, low pass filter and sample and hold. The high level outputs are multiplexed and digitized to 16 bits then output to the 6000 data bus.

The 6018 is used with RTDs, potentiometers and low-level voltages. Each channel has a highly-stability constant current transducer excitation supply that is programmable from 0.5 to 5mA. A four wire input provides individual signal and excitation leads for high-accuracy measurements. Resistance substitution is provided for calibration of RTDs and other resistive transducers.

Voltage substitution is provided for channel gain calibration utilizing an external voltage standard. A calibration attenuator enables the voltage standard to be used on its highest accuracy ranges and provides a post-attenuator output on the rear panel for calibration. Using Pacific's PI660 software zero and gain calibrations are automatic.

The four-pole, low-pass filter uses an easily changed plug-in module to set bandwidth. Either the wideband or filtered output may be digitized and sent to the 6000 data bus. Two programmable alarms with upper and lower limits are checked each time the outputs are digitized. High-level analog outputs provide a means to independently monitor or record each channel.






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

Overview

Measurement Type

Potentiometer
RTD

Analog Bandwidth

1 kHz

Excitation/Transducer Power

Current 0.5 to 5mA

Filter

4-Pole

Sample Rate (Digitizer)

Up to 10 kS/s

Analog Output

Monitor Output


Input

Configuration (Input)

8 channels, differential, 4-wire with shield. RTD Type 10-1000 Ohms

Range

±2 mV to ±10 Volts.


Excitation/Transducer Power

Current

Programmable current from 0.5 mA to 5 mA, ±0.05% in 0.5 mA steps. A short on one channel will not affect other channels. Other ranges can be accommodated.

Compliance

10 V

Stability

±0.01%, ±0.005 %/ºC.


Amplifier

Gain

Programmable 1-5000, in 1, 2, 3, 5 steps, with ±0.05% accuracy.

Gain Stability

±0.01%, ±0.005%/ºC.

Bandwidth

1 kHz
-3
dB

Linearity (Amplifier)

±0.01% for gains < 1,000, ±0.02% for gains 1,000 and higher.

Impedance

50 Megohms, shunted by 1,000 pF.

Protection

±50 Volts differential, ±50 Volts common mode.

Common Mode

80 dB plus gain in dB up to 110 dB, DC to 60 Hz.

CM Voltage

±10 V

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 for 8 hours.

Source Current

±2 nA, ±0.01 nA/ºC.

Noise (10 Hz)

0.1 µV rms, RTI.

Noise (1 kHz)

1.0 µV rms, RTI.

Recovery

800 µS to ±0.1% for 10X overload to ±10 Volts.


Filter

Type

Four-pole, low-pass Butterworth.

Frequency

Plug-in, 4 Hz to 1 kHz, 10 Hz supplied.

Noise

1.0 mV RMS RTO.

Other

Other filter characteristics and cut offs are available.


Digitizer

Sample

Simultaneous sample and hold, within ±50 nS channel-to-channel. Droop is less than ±0.005%.

Resolution

16-bits, two's complement output.

Sample Rate

Up to 10 kS/s per channel
Up to 10
kS/s

Digitizer Linearity

±2 LSB (±0.006%)

Continuity

Monotonic to 15 bits.

Alarms

Two alarms each with upper and lower limits that are programmable from negative to positive full scale. Limits checked on each ADC sample.


Calibration

Resistance

Substitution of precision calibration resistor. 100 Ohm ±0.1% supplied.

Voltage Substitution

Alternate input for external calibration reference. Programmable attenuation steps of 1, 0.1, and 0.01 with ±0.01% accuracy. Output of the attenuator is provided on a rear panel connector for calibration.

Zero Calibration

Amplifier input disconnected and shorted.


Mechanical

Mounting

Occupies one slot in Series 6000 enclosures.

Connectors

Input connector is 50-pin Type D. Connectors are mounted on the front and mates are supplied.

Operating Temperature

0 to +50 ºC


Ordering Information 

Ordering Information

6018 - 8-Channel RTD/Potentiometer Amplifier-Digitizer, 10kS/s.
6081 - Screw Terminal Adapter.


 DOWNLOADS 

Model 6018
(PDF, 92KB)



 Complementary to Model 6018 


Model 6017
Model 6017 32-Channel Voltage/Thermocouple Amplifier-Digitizer


Model 6044
Model 6044 32-Bit Discrete Input/Output with Alarms

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