CAT17 Pretreatment System Overview
CAT17 Pretreatment System is a commonly used sample pretreatment device in industrial process analysis, used for cooling, filtering, and dehumidifying high-temperature, high-humidity, dusty, or corrosive gases to ensure the measurement accuracy and service life of analytical instruments. This manual is suitable for engineering technicians, maintenance personnel, and procurement selection reference.
For the complete technical document, please download the Chinese manual below:
Download CAT17 Chinese Manual.pdf
Main Technical Parameters
| Item | Specification |
|---|---|
| Applicable sample gas temperature | Up to 200°C (higher customizable) |
| Cooling method | Compressed air or water cooling |
| Filtration accuracy | 0.1 μm (optional) |
| Output dew point | ≤ 3°C |
| Interface material | Stainless steel 316L / PTFE |
| Protection rating | IP65 (optional) |
Installation and Connection Steps
- Site selection: Install the CAT17 in a location close to the sampling point and convenient for maintenance, avoiding vibration and direct sunlight.
- Gas path connection: Use stainless steel or PTFE tubing to connect the sample gas inlet and outlet, ensuring sealing without leakage.
- Cooling medium connection: Connect compressed air or cooling water according to the manual requirements, with pressure controlled at 0.3~0.6 MPa.
- Electrical wiring: Connect the power supply and signal lines, ensuring reliable grounding.
- Inspection: Perform a leak test before introducing sample gas to confirm no alarms.
Parameter Settings and Commissioning
Temperature Setting
According to the sample gas dew point and working conditions, set the cooling temperature through the temperature controller. It is generally recommended to set it at 2~5°C. Avoid setting it too low to prevent freezing and blockage.
Flow Adjustment
Adjust the sample gas flow to the range required by the analyzer (e.g., 1~5 L/min). Too high a flow will reduce the cooling effect, while too low a flow will cause slow response.
Alarm Thresholds
Set alarm values for temperature, flow, and filter differential pressure in the controller to facilitate timely detection of abnormalities.
Daily Maintenance and Troubleshooting
Maintenance Points
- Regularly drain condensate water, recommended once per shift.
- Check the filter element and replace it when the differential pressure exceeds 0.1 MPa.
- Clean the heat exchanger quarterly to prevent scaling.
- Calibrate the temperature sensor and flow meter annually.
Common Faults
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| High outlet dew point | Insufficient cooling temperature, excessive flow | Lower temperature, reduce flow |
| Poor condensate drainage | Blocked drain valve | Clean or replace the drain valve |
| Sample gas leakage | Loose connectors or aged seals | Tighten connectors, replace seals |
| Temperature alarm | Sensor failure or cooling failure | Check sensor and cooling system |
Selection and Procurement Recommendations
When purchasing the CAT17 pretreatment system, it is necessary to clarify the sample gas composition, temperature, pressure, flow, and environmental conditions. If the sample gas contains corrosive media, PTFE-coated or all-PTFE gas paths should be selected. For explosion-proof occasions, models with Ex d certification are required. It is recommended to request the original Chinese manual and certificate of conformity to ensure after-sales service and spare parts supply.
For more detailed instructions, please refer to: Download CAT17 Chinese Manual.pdf