
Product Description
General Information
| Manufacturer | Emerson | 
|---|---|
| Model/Part Number | PR6423/002-030+CON021 | 
| Description | Eddy Current Signal Converter with Sensor | 
CON021 Eddy Current Signal Converter Specifications
Dynamic Performance
| Parameter | Value | 
|---|---|
| Frequency Range (-3 dB) | 0 to 20000 Hz | 
| Rise Time | <15 µs | 
| Compatibility | PR6422, PR6423, PR6424, PR6425, PR6426, PR6453 | 
| Extended Range Compatibility | CON021/91x-xxx (Required for PR6425) | 
Environmental Specifications
| Parameter | Value | 
|---|---|
| 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
| Parameter | Value | 
|---|---|
| Supply Voltage Range | -23V to -32V (Output Range -4V to -20V) | 
| Alternative Supply Voltage | -21V to -32V (Output Range -2V to -18V) | 
Physical Specifications
| Parameter | Value | 
|---|---|
| Housing Material | LMgSi 0.5 F22 | 
| Weight | ~120 grams (4.24 oz) | 
| Mounting | 4 Screws M5x20 (Included) | 
| Connections | Transducer: Self-Locking Lemo-Plug, Supply/Output: Screw Terminal (max. 1.5mm² wire) | 
Ordering Information
| Model Number | Sensor Type | Measuring Range | Linearity Error | 
|---|---|---|---|
| CON021 | PR6423 | 2.0mm (Standard Range) | ≤ 1.0% | 
PR6423 8mm Eddy Current Sensor Specifications
Performance
| Parameter | Value | 
|---|---|
| Linear Measurement Range | 2 mm (80 mils) | 
| Initial Air Gap | 0.5 mm (20 mils) | 
| Incremental Scale Factor (ISF) | 8 V/mm (203.2 mV/mil) ± 5% @ 0 to 45°C (+32 to +113°F) | 
| Deviation from Best Fit Straight Line (DSL) | ± 0.025 mm (± 1 mil) @ 0 to 45°C (+32 to +113°F) | 
Measuring Target
| Parameter | Value | 
|---|---|
| Minimum Shaft Diameter | 25 mm (0.79”) | 
| Target Material | 42CrMo4 (AISI/SAE 4140) Standard (Other options available on request) | 
Environmental & General Specifications
| Parameter | Value | 
|---|---|
| Protection Class | IP66 (IEC 60529) | 
| Operating Temperature Range (Sensor incl. 1m Cable) | -35 to +180°C (-31 to 356°F) | 
| Operating Temperature Range (Cable & Connector) | -35 to +150°C (-31 to 302°F) | 
| Material | Sensor Tip: PEEK (Polyether Ether Ketone), Case: Stainless Steel | 
| Cable | PTFE (Polytetrafluoroethylene) | 
| Connector | Brass, Nickel-Plated | 
| Weight (Sensor with 1m Cable) | Approx. 100 grams (3.53 oz) | 
Ordering Information
Sensor Model Variants
| Tip Diameter | Case Threads | Armored Cable | Model Number | 
|---|---|---|---|
| 8mm | M10x1 | No | PR6423/00 | 
| 8mm | M10x1 | Yes | PR6423/01 | 
| 8mm | M10x1 | Yes (Reverse Mount) | PR6423/03* | 
| 8mm | 3/8”-24 UNF | No | PR6423/10 | 
| 8mm | 3/8”-24 UNF | Yes | PR6423/11 | 
| 8mm | 3/8”-24 UNF | Yes (Reverse Mount) | PR6423/13* | 
* Armored cable option for Reverse Mount, if Adapter Plug is chosen.
Additional Ordering Options
| Model No. | Case Thread | Adapter Plug | Cable Length | Cable End | 
|---|---|---|---|---|
| PR6423/00, PR6423/01, PR6423/10, PR6423/11 | 25mm, 35mm, 45mm, 55mm, 65mm, 75mm, 85mm, 95mm, 105mm, 115mm, 155mm, 195mm, Reverse Mount | With/Without | 4.0m, 5.0m, 8.0m, 9.0m, 10.0m | Lemo*, Open | 
 
          