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CON021 / SNG-CON021

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Emerson CON021 / SNG-CON021 is a panel-mount signal converter for PR642x eddy current measuring chains.
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Technical specifications for CON021 / SNG-CON021

  • Manufacturer:
    Emerson
  • Part Number:
    CON021 / SNG-CON021
  • Product Family:
    Epro
  • Product Type:
    Eddy Current Signal Converter
  • Stock:
    1
  • Compatible Sensors:
    PR6422, PR6423, PR6424, PR6426; PR6425 requires an extended-range CON021/91x-xxx converter
  • Sensor Connection:
    Self-locking LEMO socket
  • Nominal Supply:
    −24 V DC
  • Supply Range:
    −23...−28 V for −4...−20 V output; −21...−28 V for −2...−18 V output
  • Output Voltage:
    Factory setting −2...−18 V; selectable −4...−20 V
  • Frequency Range:
    0...20 kHz (−3 dB) with 10 nF load
  • Rise Time:
    <15 µs with 1 nF load
  • Operating Temperature:
    −30...100 °C
  • Storage and Transport:
    −40...105 °C
  • Relative Humidity:
    0...95%, noncondensing
  • Protection Class:
    IP20
  • Mounting:
    Prepared for installation in a mounting box
  • Weight:
    0.095 kg
  • Tariff Code:
    8471800000
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Interface Calibration Diagnostics Application

Features:

  • Panel-mount electronics complete a calibrated PR642x eddy current measuring chain
  • A front self-locking LEMO socket connects the matching Emerson eddy current sensor
  • Screw terminals provide the −24 V DC supply connection and proportional voltage output

Emerson CON021 / SNG-CON021 supplies the oscillator, linearization, and amplification functions required by the matched PR642x probe.

The measuring chain can monitor slow axial displacement, fast radial vibration, position, eccentricity, and speed or key pulses on rotating machinery.

Confirm the calibrated probe, serial-number pairing, target material, output-range selection, cable route, load, grounding, and approval conditions before commissioning.

Availability, condition, price, and shipping time for CON021 / SNG-CON021 are confirmed during quotation.

Emerson CON021 / SNG-CON021 Eddy Current Signal Converter Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • The CON021 sensor input is a self-locking LEMO socket at the converter front
  • Supply and signal output use screw terminals on the mounting plate
  • The output circuit is open-circuit and short-circuit protected
  • The converter label identifies the matched sensor type and sensor serial number
  • A fine-adjustment potentiometer is provided for the approved calibration procedure
  • Standard measuring chains are adjusted for 42CrMo4 / SAE 4140 target material
  • For the −2...−18 V range, an output from −18...−22 V indicates that the probe gap is too large.
  • An output from −1...−2 V can indicate that the gap is too small, the sensor is damaged, or the sensor circuit is open.
  • An output from 0...−1 V indicates a converter fault or missing supply voltage.
  • Use CON021 / SNG-CON021 with a correctly paired PR642x sensor for static or dynamic shaft-distance measurement
  • Apply the chain to radial or axial shaft displacement, vibration, position, eccentricity, or speed/key measurement
  • Verify target material, probe gap, measuring range, output range, shielding, and approval conditions for the installed machine
Description
CON021 / SNG-CON021 is an Emerson Epro panel-mount eddy current signal converter for PR642x measuring chains used on rotating machinery.

The converter accepts a PR6422, PR6423, PR6424, PR6425, or PR6426 sensor through a self-locking LEMO socket and supplies a voltage signal proportional to shaft distance, displacement, or vibration.

Before installing or replacing CON021 / SNG-CON021, match the sensor type and serial number, target material, calibrated measuring range, output-range bridge, supply circuit, cable shielding, grounding, and hazardous-area approval label.
Alternative Names
CON021 / SNG-CON021 CON021 CON 021 SNG-CON021 SNG CON021 Emerson CON021 Emerson Epro CON021 Epro SNG-CON021
Technical notes
CON021 / SNG-CON021 must remain matched to the calibrated PR642x sensor; verify the sensor serial number, output-range bridge, −24 V DC circuit, shielding, grounding, and approval label before commissioning.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Must Emerson CON021 / SNG-CON021 stay paired with its original PR642x sensor?
Yes. Emerson states that the sensor and converter are adjusted and delivered as a complete measuring chain. Match the sensor type and serial number shown on the converter label before replacement.
How is the output range selected on Emerson CON021 / SNG-CON021?
The internal wire bridge selects −2...−18 V or −4...−20 V on standard-range converters. Extended-range CON021/91x-xxx versions use a fixed −4...−20 V range.
What cable practice is recommended for Emerson CON021 / SNG-CON021?
Emerson recommends double-screened twisted-pair measuring cable, preferably LiYCY-CY 2×2×0.25 mm² for direct connections, with shielding and routing arranged according to the installation guide.
How can adjacent probes affect Emerson CON021 / SNG-CON021?
Closely positioned eddy current sensors can interact. Emerson provides an oscillator-frequency bridge for adjacent arrangements; verify the installation geometry and commissioning procedure before changing it.
Can Emerson CON021 / SNG-CON021 be assumed suitable for a hazardous area?
No. Hazardous-area conformity depends on the exact calibrated converter and its conformity label, safety barrier, ambient limits, and installation. Verify the label and certificate before use.
What should be checked if Emerson CON021 / SNG-CON021 output is unstable?
Check sensor gap, target material, sensor-to-converter pairing, connector condition, supply voltage, load, cable shielding, grounding, nearby probe interaction, and the approved calibration procedure.
What information should accompany a quote for Emerson CON021 / SNG-CON021?
Provide clear label photos, complete converter designation, serial number, paired PR642x sensor type and serial number, measuring range, output range, approval markings, required condition, and quantity.