The HONEYWELL ENRAF T901-P 31A Temperature & Pressure Transmitter is an integrated marine tank monitoring instrument designed for continuous measurement of cargo temperature and inert gas pressure in liquid cargo tanks. It combines multiple PT100 temperature sensing elements with a pressure transmitter to provide reliable measurement data for tanker cargo monitoring systems.

The T901-P31A configuration includes three temperature sensors and one pressure sensor, allowing measurement of temperature at different tank levels together with inert gas pressure monitoring. It is commonly connected with Honeywell Enraf radar-based tank gauging systems for cargo management, density correction, and safety monitoring applications.

The transmitter is designed for harsh marine environments with stainless steel 316L construction, intrinsic safety certification, and protection against saline conditions. It is widely used on oil tankers, chemical tankers, and other vessels requiring accurate cargo tank measurement and monitoring.

📋 Product Datasheet

❓ Common Questions & Answers

Q: What is the main function of HONEYWELL ENRAF T901-P 31A?
A: The T901-P31A measures cargo tank temperature at multiple levels and inert gas pressure to support marine cargo monitoring and safety management.

Q: What is the difference between T901-P31A and other T901 models?
A: The T901-P31A includes three temperature sensing elements and one pressure sensor, while other T901 variants may have fewer temperature sensors.

Q: Where is the T901-P31A commonly used?
A: It is mainly used on oil tankers, chemical tankers, and marine vessels equipped with Honeywell Enraf tank gauging systems.

Q: Is T901-P31A a pressure transmitter only?
A: No. It is a combined temperature and pressure transmitter designed for integrated tank monitoring.

Q: What communication system does T901-P31A connect to?
A: The transmitter is designed to connect with compatible Honeywell Enraf radar tank gauging systems for measurement processing and monitoring.

Q: What are common causes of T901-P31A failure?
A: Common issues include sensor aging, cable damage, pressure port contamination, moisture ingress, unstable power supply, and mechanical damage from marine operation.

Q: What should be checked before replacement?
A: Confirm the exact model, pressure range, temperature probe configuration, wiring, hazardous-area certification, and compatibility with the existing tank monitoring system.

Q: Is Honeywell Enraf T901-P31A still manufactured?
A: It is considered a legacy marine instrumentation product and is mainly maintained through spare-part inventories and replacement channels.

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