The Leitenberger Smart Pressure Gate (SPG) model 901_004 is an extremely advanced, intelligent pressure monitoring and control device specifically developed for high-pressure applications in carbon dioxide (R744) based refrigeration systems. This device ensures precise monitoring and control through digital interfaces and high-precision sensors, thereby optimizing energy efficiency and system safety.
This modern solution is capable of replacing conventional mechanical pressure gauges, pressure switches, and analog pressure sensors (with 0…10 V output), integrating the functions into a single, robust unit.
The Smart Pressure Gate 901_004 offers several key advantages for refrigeration technology professionals:
This device is specifically designed for the special requirements of systems operating with carbon dioxide as a natural refrigerant, where managing high operating pressure is critical.
Extreme Pressure Rating: The device withstands extremely high pressure, operating reliably even up to 160 bar in the range.
Excellent Measurement Accuracy: Thanks to the extremely precise sensors, the measurement accuracy is 0.5 % FSS (Full Scale Span – expressed as a percentage of the full measurement range), which guarantees precise control.
The digital outputs of the SPG 901_004 enable fine-tuning of systems and minimization of energy consumption.
EC Fan Speed Control: Supports the speed control of EC (electronically commutated) fans, which results in maximum energy efficiency during the cooling processes.
Replacement Function: As a single device, it can replace mechanical manometers, pressure switches, and traditional 0…10 V analog output pressure transmitters.
The built-in digital communication interfaces allow the device to be integrated into modern monitoring systems (BMS/SCADA).
During design, great emphasis was placed on ease of installation, minimizing downtime.
The detailed technical specifications of the SPG 901_004 device ensure long-term, reliable operation even in the most demanding industrial environments.
| Parameter | Low Pressure (LP) | High Pressure (HP) |
|---|---|---|
| Measurement Range | 0…60 bar | 0…160 bar |
| Measurement Range (psi) | 0…870 psi | 0…2320 psi |
| Measurement Accuracy | 0.5 % FSS | 0.5 % FSS |
| Refrigerant Compatibility | CO₂ (R744) | CO₂ (R744) |
| Process Connection | G1/4 SAE | 7/16″-20 UNF |
| Digital Communication | Modbus RTU / RS485 | Modbus RTU / RS485 |
| Control Output | 0…10 V (For fan control) | 0…10 V (For fan control) |
Design: Intelligent pressure monitor with fan control.
Configuration: Robust, quality made in Germany design.
Area of Application: Primarily for monitoring CO₂ (R744) refrigeration units, compressors, and high-pressure systems.
The Smart Pressure Gate 901_004 is the ideal choice in the following areas:
Refrigeration Technology: Especially in transcritical CO₂ systems where precise control is required on the high-pressure (HP) side.
Industrial Measurement and Control Technology: Any industrial process requiring reliable, digitally communicated pressure data.
Compressor Protection: Through precise pressure monitoring, it contributes to increasing the lifespan of compressors and preventing failures.
This device reflects Leitenberger's commitment to high-quality, innovative measurement and control technology solutions, especially regarding future refrigerants and energy efficiency.
