EPRO CON021 Eddy Current Signal Converter

The EMERSON EPRO CON021 is an advanced Eddy Current Signal Converter designed for critical applications in turbo machinery. It is used in steam, gas, and hydro turbines, compressors, pumps, and fans to measure radial and axial shaft displacement, position, eccentricity, and speed/key.

Dynamic Performance

Parameter	Specification
Frequency Range (-3 dB)	0 to 20000 Hz
Rise Time	<15 µs
Compatible Models	PR6422, PR6423, PR6424, PR6425, PR6426, PR6453

Note: The PR6425 always requires an extended range converter (CON021/91x-xxx).

Environmental Specifications

Parameter	Specification
Operating Temperature Range	-30 to 100°C (-22 to 212°F)
Shock and Vibration	5g @ 60 Hz @ 25°C (77°F)
Protection Class	IP20

Power & Electrical Specifications

Parameter	Specification
Supply Voltage Range	-23V to -32V (Output Range: -4V to -20V) -21V to -32V (Output Range: -2V to -18V)
Connections	Self-locking Lemo-Plug for transducer; Screw Terminal for supply/output (max. 1.5mm² wire)

Physical Specifications

Parameter	Specification
Housing Material	LMgSi 0.5 F22
Weight	~120 grams (4.24 oz)
Mounting	4 Screws M5x20 (included in delivery)

Compliance and Certifications

CE 2014/30/EU, 2014/34/EU, 2011/65/EU
EN61326-1, DIN EN 50581
ATEX EN 60079-0:2009, EN 60079-11:2012
IEC-Ex IEC 60079-0:2007-10; Edition 5, IEC 60079-11:2011
CSA CAN/CSA-C22.2 NO. 0-M91, CAN/CSA-C22.2 NO. 157-92
UL ANSI/UL Standard 913-2004, ANSI/UL Standard 1604-1995

Hazardous Area Approvals

Intrinsic Safety (iA)
- ATEX II 2 G Ex ia IIC T4 Gb (-20°C ≤ Ta ≤ 80°C)
- IEC-Ex Ex ia IIC T4 Gb (-20°C ≤ Ta ≤ 80°C)
- CSA Class I Division 1, Groups A, B, C, D, T4 (-25°C ≤ Ta ≤ 80°C)
Non-sparking (nA)
- CSA Class I Division 2, Groups A, B, C, D
- Ex nA II T3..T4, AEx nA II T3..T4 (-25°C ≤ Ta ≤ 80°C)

Ordering Information

Model Number	Sensor Type	Measuring Range	Linearity Error
CON021	PR6422	1.0mm (Standard Range)	≤ 1.5%
CON021	PR6423	2.0mm (Standard Range)	≤ 1.0%
CON021	PR6424	4.0mm (Standard Range)	≤ 1.5%
CON021	PR6426	8.0mm (Standard Range)	≤ 1.5%
CON021/912-015	PR6422	1.5mm (Extended Range)	≤ 2.0%
CON021/913-030	PR6423	3.0mm (Extended Range)	≤ 1.5%
CON021/913-040	PR6423	4.0mm (Extended Range)	≤ 2.0%
CON021/914-060	PR6424	6.0mm (Extended Range)	≤ 1.0%
CON021/914-080	PR6424	8.0mm (Extended Range)	≤ 1.5%
CON021/914-100	PR6424	10.0mm (Extended Range)	≤ 2.0%
CON021/915-040	PR6425	4.0mm (Standard Range)	≤ 1.5%
CON021/915-060	PR6425	6.0mm (Extended Range)	≤ 2.0%
CON021/915-080	PR6425	8.0mm (Extended Range)	≤ 3.0%
CON021/915-100	PR6425	10.0mm (Extended Range)	≤ 4.0%
CON021/916-120	PR6426	12.0mm (Extended Range)	≤ 1.5%
CON021/916-160	PR6426	16.0mm (Extended Range)	≤ 2.0%
CON021/916-200	PR6426	20.0mm (Extended Range)	≤ 2.5%
CON021/916-240	PR6426	24.0mm (Extended Range)	≤ 3.5%

Dimensions

EMERSON-CON021-Dimensions-1

EMERSON-CON021-Dimensions-2

Here’s a breakdown of the key dimensions from the drawing:

Top View Dimensions:

Overall Width: 56 mm
Main Body Width: 50.8 mm
Distance between Mounting Holes (Horizontal): 50.8 mm
Distance from Bottom to Center of Mounting Holes: 26 mm
Distance from Top to Center of Mounting Holes: 11 mm
Overall Height: 72 mm
Distance from Bottom to Bottom Mounting Holes: 6 mm
Mounting Hole Size: 4x 5.3 mm (diameter) and 2x 4.2 mm (diameter)

Bottom View Dimensions:

Overall Width: 41 mm

Other Notable Features:

Terminal Connections: The drawing indicates terminals for -24V, 18 (ground), and OUT (output signal).

Important Notes:

Units: All dimensions are in millimeters (mm).
Interpretations: The “4x 5.3” and “2x 4.2” likely refer to the number and diameter of mounting holes.
Context: This drawing provides the physical dimensions necessary for installation and mounting of the CON021 converter.