Overview

This document provides essential information on the PL40-I Level Transmitter, including safety precautions, installation guidelines, operating conditions, troubleshooting, and maintenance. The PL40-I is a 2-wire, 4-20mA level transmitter designed for hazardous area applications, ensuring precise level measurements in various tank systems.

1. Safety Information (p.4-5)

• Electrical Hazards: Power isolation is mandatory before installation or maintenance.
• Intrinsic Safety Compliance: Certified for Ex ia IIC T6...T1 Ga (ATEX & IECEx standards).
• Electrostatic Discharge (ESD) Precautions:
  • Avoid exposure to static electricity discharges.
  • Handle and store electronic components properly.

2. Storage Before Installation (p.6)

• Store in a dry, sheltered area and keep in original packaging.
• Inspect for physical damage before installation.

3. Description and Application (p.9)

• The PL40-I Level Transmitter consists of a transducer and transmitter box connected by a shielded cable.
• Designed for tank level measurements, including ballast, fuel oil, fresh water, and chemical products.
• Suitable for hazardous area installations with intrinsic safety certification.

4. Technical Specifications (p.11-12)

• Measurement Ranges:
  • Level measurement: 0 to 70 bar
  • Overload capacity: up to 105 bar
• Operating Temperature:
  • Transducer: -40°C to +125°C
  • Transmitter Box: -40°C to +85°C
• Protection Ratings:
  • Transducer: IP68 (fully submersible)
  • Transmitter Box: IP66/67 (outdoor-rated)
• Output Signal: 4-20mA DC (2-wire system).

5. Mechanical Installation (p.15-16)

• Mounting Options:
  • Immersed mounting for ballast tank applications.
  • Side flange mounting with adapter or welded flange.
• Isolation Valve Recommended: Install between tank and transducer for easier maintenance.

6. Electrical Installation (p.16-19)

• Transducer Cable Requirements:
  • Must be free from damage (no cracks, burns, or crushing).
• Transmitter Box Placement:
  • Install outside the tank in a protected area.
  • Avoid exposure to shock, chemicals, and excessive moisture.
• Intrinsic Safety Guidelines:
  • Use an isolation barrier (KFD0-CS-Ex1.51P/2.51P) in the safety area.
  • Certified for ATEX & IECEx explosion-proof applications.

7. Operation & Calibration (p.19-20)

• Startup Verification:
  • 3.5mA output → No signal detected.
  • 4-20mA output → Normal level or pressure reading.
  • 21mA output → Overpressure alarm.
• Calibration:
  • Factory pre-set, no adjustment needed.
  • Ensure proper specific gravity setting for accurate readings.

8. Maintenance & Troubleshooting (p.20-21)

• Common Issues & Solutions:
  • Indication Error: Check transducer cleanliness, zero/span settings, and venting pipe.
  • Zero Reading: Inspect power supply, isolation valve, and sensor status.
  • Maximum Reading: Likely sensor failure—requires replacement.