Smart Pressure Gate 901 for CO₂ refrigeration systems

The Smart Pressure Gate 901 was specifically developed for use in CO₂ refrigeration systems (R744) and is designed for particularly high operating pressures. Its robust construction, precise measurement technology, and digital communication offer maximum safety, efficiency, and reliability for modern, sustainable refrigeration systems.

Your advantages at a glance

• Optimized for CO₂ systems: Designed for extremely high operating pressures and demanding operating conditions.

• Replaces several individual components: Reduces effort and risk by replacing mechanical high and low-pressure gauges.

• High measurement accuracy: Precise pressure detection with 0.5 % FSS

• Digital system integration: Smart control, monitoring, and remote analysis are possible via Modbus RTU / RS485.

• Easy to retrofit: Standardized connections allow for uncomplicated integration into existing CO₂ refrigeration systems.

Technical Data

Measuring ranges:

• Low pressure (LP): 0 … 60 bar (0 … 870 psi)

• High pressure (HP): 0 … 160 bar (0 … 2320 psi)

Electronic Connections

• Modbus RS485 for digital communication

• 0…10 V signal for high and low pressure control

• Alternatively: pressure transducer with 4…20 mA signal

• Up to two switching outputs for AC fans

Compatible refrigerants:

• CO₂ (R744)

Connections & Communication:

• Process connection: 1/4" SAE // 7/16"-20 UNF (welded)

• Digital interface: Modbus RTU / RS485