Yokogawa ASD143 Digital Input Modules

The Yokogawa ASD143 is ideal for applications requiring intrinsic safety barriers in hazardous environments. Key applications include:

• Process Control Systems: Ensures safe signal transmission in oil refineries and chemical plants.

• Gas Detection Systems: Used with gas sensors in hazardous zones.

• Pharmaceutical Manufacturing: Provides safety in environments with flammable substances.

• Power Plants: Protects control systems from explosive atmospheres.

Product Advantages

1. High Reliability: Ensures stable signal transmission with minimal distortion.

2. Wide Certification: Complies with ATEX, IECEx, UL, and CSA standards.

3. Compact Design: Saves space in control cabinets.

4. Easy Installation: DIN rail mounting simplifies setup.

5. Robust Construction: Suitable for harsh industrial environments.

Frequently Asked Questions (FAQ)

1. What is the purpose of the ASD143?

   The ASD143 acts as a safety barrier to prevent ignition in hazardous areas by limiting energy.

2. What certifications does the ASD143 have?

   It is certified by ATEX, IECEx, UL, and CSA for use in explosive atmospheres.

3. Can the ASD143 be used with 4-20 mA sensors?

   Yes, it is designed for 4-20 mA analog signals.

4. What is the operating temperature range?

   It operates between -20°C and +60°C.

5. How is the ASD143 mounted?

   It is mounted on a standard DIN rail.

6. What is the isolation voltage of the ASD143?

   The isolation voltage is 250 V AC/DC.

7. Is the ASD143 suitable for Zone 0 applications?

   Yes, it can be used in Zone 0, 1, and 2 hazardous areas.

8. What is the weight of the ASD143?

   It weighs 0.3 kg.

9. Can the ASD143 be used in outdoor environments?

   No, it has an IP20 rating and is designed for indoor use.

10. Does the ASD143 require maintenance?

    No, it is maintenance-free under normal operating conditions.