Penetrometers for pipes are manually operated test instruments. Temperature control and measurement are carried out via digital control units; on request, control, measurement data logging and test evaluation can be handled with optional software. Coesfeld offers two separate models with two different operating principles: the standard (liquid bath) type comes with an integrated cooling water connection for measurement at room temperature and can be configured with up to 3 or 6 stations; the RP 3 Air is a fixed 3-station heating chamber that uses air as the heating medium, can reach much higher temperatures (up to 300 °C), and can be adapted to different standards with simple mechanical modifications.
- All components in contact with liquid are made of stainless steel or corrosion-resistant materials
- Precise temperature control and measurement via digital control units
- Data logging and evaluation with optional PC/software integration
- On the RP 3 Air, needle penetration is measured with built-in digital displacement gauges
- RP 3 Air test stations can be adapted to different standards with simple mechanical modification
Liquid Bath or Air Oven?
| Criterion | Standard Penetrometer (Liquid Bath) | RP 3 Air (Air Oven) |
|---|---|---|
| Heating medium | Liquid (water) bath | Air |
| Number of stations | 3 or 6 | 3 (fixed) |
| Temperature range | +30 °C … +100/+130 °C or -10 °C … +95 °C (depending on configuration) | Room temperature+10 °C … +300 °C |
| Temperature stability | Depends on configuration | ±2 °C |
| Cooling | Integrated cooling water connection standard, optional external cooling unit | Not required |
| Standard adaptability | Fixed configuration | Adaptable to different standards with simple mechanical modification |
| Typical use | Room temperature and mid-range temperature testing (up to 130 °C) | High-temperature testing (up to 300 °C), multi-standard compliance |
Standard Penetrometer — Technical Data
| Measuring stations | 3 or 6 |
|---|---|
| Temperature range | +30 °C … +100 °C / +30 °C … +130 °C / -10 °C … +95 °C (configuration-dependent) |
| Mains | 230 / 115 V, 50/60 Hz |
| Cooling | Integrated cooling water connection standard; optional external cooling unit |
| Material | All components in contact with liquid are stainless steel or corrosion-resistant material |
| Option | Control, data logging and evaluation via PC extension and software |
RP 3 Air — Technical Data
| Measuring stations | 3 (fixed) |
|---|---|
| Temperature range | Room temperature+10 °C … +300 °C |
| Temperature stability | ±2 °C |
| Heating medium | Air |
| External dimensions (WxDxH) | ~434 × 585 × 890 mm |
| Weight | ~55 kg |
| Mains | 230 V, 50/60 Hz |
Supported Standards
Standard Penetrometer:
RP 3 Air:
Application Areas
Determining the mechanical strength of pipeline coatings (PE, PP, epoxy, bitumen, etc.) under temperature; quality control at pipe and fitting manufacturers; certification testing to various national/international standards.