Fume Hood Controller Owner's Manual

NOTE: While the pneumatic actuator is being commanded, you may hear a hissing or clicking sound coming from the AO-P module. This is due to the movement of the air valves and the bleeding of air from the actuator. This is normal operation.

Differential Pressure Transmitter

The differential pressure transmitter is used to send a signal that represents the velocity of air in the duct to the controller. The differential pressure transmitter receives the velocity pressure signal from the airflow sensor (orifice plate). The transmitter is a dead-end device which prevents the exhausted fume hood air from flowing through the transmitter or the sensor.

NOTE: In accordance with laboratory ventilation safety standards and regulatory agencies, the performance of the fume hood should be checked annually, as a minimum, to ensure continued safe and proper operation. Consult Siemens Building Technologies for more information about a comprehensive laboratory ventilation system evaluation and associated test programs.

Airflow Sensor

Airflow sensors are used in conjunction with the differential pressure transmitter. The airflow sensor senses an average air velocity across the duct section. Using the average air velocity and the duct area, the controller calculates the airflow.

CAUTION:

Ensure that the sensor and exhaust system materials match the fume hood usage. Exhausting corrosive fumes may corrode the sensor and exhaust system.

Cables

The Fume Hood Controller connects to the portable operator's terminal with the controller interface cable (P/N 540-143). This cable has an RJ-11 connector (similar to a phone jack) on one end, and a larger, 9-pin connector on the other end. The RJ-11 connector plugs into the bottom of the ODP. For more information, see the Fume Hood Controller Operator Display Panel User's Card (125-1976). The 9-pin connector plugs in the communication port of the portable operator's terminal. For more cable information, contact your local Siemens Building Technologies, Inc. representative.

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Siemens Building Technologies, Inc.

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Siemens 125-5033 owner manual Differential Pressure Transmitter, Airflow Sensor, Cables
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125-5033 specifications

The Siemens 125-5033 is a highly regarded circuit breaker in the world of electrical engineering and power distribution. Known for its robust design and versatile applications, this device offers a host of features that make it suitable for both commercial and industrial use.

One of the main features of the Siemens 125-5033 is its compact size. This allows for easy integration into existing systems without occupying excessive space, making it an ideal choice for facilities with limited room for electrical infrastructure. Its ability to handle high current ratings, typically around 125 amps, ensures that it can support a variety of electrical loads, making it versatile across different applications.

The Siemens 125-5033 employs advanced technologies, such as thermal-magnetic trip mechanisms. This allows for reliable protection against overloads and short circuits. The thermal component of the trip mechanism is designed to react to sustained overcurrent conditions, while the magnetic component responds instantaneously to short circuits. This dual-functionality ensures that the circuit breaker can effectively protect both the conductors and the connected equipment.

In terms of safety, the Siemens 125-5033 comes with advanced arc suppression technologies that minimize the risk of arcing during the circuit interrupting process. This not only enhances the longevity of the breaker but also safeguards personnel working near electrical installations. Additionally, the device features a clear, accessible reset mechanism, making it user-friendly and easy to operate in case of an interruption.

Another notable characteristic of the Siemens 125-5033 is its built-in ground fault protection option. This capability provides an added layer of safety, ensuring that any ground faults are detected and addressed promptly. It is particularly useful in environments where moisture or dust can compromise electrical safety.

The Siemens 125-5033 also boasts compatibility with various monitoring and control systems, enabling seamless communication and integration into smart building management systems. This feature allows facility managers to monitor power usage, identify potential issues, and optimize energy consumption effectively.

Overall, the Siemens 125-5033 circuit breaker is a reliable, safe, and technically advanced choice for those looking to enhance their electrical systems. Its compact size, dual-trip mechanism, ground fault protection, and compatibility with modern technologies make it a valuable asset for any facility looking to improve its electrical safety and efficiency.
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