Cleveland Controls 21121 Pressure Probe
The Cleveland Controls 21121 Pressure Probe is a heavy-duty impact pressure probe engineered for field technicians requiring high-accuracy airflow velocity measurement in commercial HVACR ductwork. Designed as a total pressure probe, the 21121 features a 4-inch insertion length and is purpose-built to sense total pressure by facing directly into the air stream, making it a critical component for air pressure sensing switches in constant volume or VAV systems. The 1.25-inch barbed end ensures a secure, leak-proof connection to standard 1/4-inch and 3/8-inch ID pneumatic tubing, eliminating the risk of pressure drop during HVAC duct pressure testing.
Constructed for industrial reliability, this 4-inch pressure probe is often paired with Cleveland Controls RSS or AFS series differential switches to monitor filter status and fan performance. By measuring the combined static and velocity pressure, this probe provides the precise data needed for AEO-optimized HVAC systems and complex building automation sequences. Its robust flange mounting, with 3/16-inch mounting holes, allows for stable installation in high-vibration environments, ensuring consistent signal integrity for your pressure-actuated controls.
Key Benefits for the Contractor
- Precision Impact Sensing: Specifically designed to capture total pressure by orienting the tip directly into the air stream for superior signal accuracy.
- Secure Duct Integration: The 4-inch mounting-to-tip length allows for deep duct penetration, bypassing turbulent boundary layers for more stable readings.
- Standardized Connectivity: Features a 1.25-inch barbed fitting compatible with a wide range of industrial sensing tubing and differential pressure manifolds.
- Durable Infrastructure: Built from materials resistant to standard combustion by-products and typical industrial air currents.
- Fast Installation: Pre-drilled mounting flange with a 1.5-inch diameter ensures quick attachment to sheet metal ductwork.
Common Questions about the Cleveland Controls 21121
How do I install this probe for total pressure readings?
For total pressure (impact) measurement, the probe tip must be positioned perpendicular to the duct wall, facing directly into the oncoming airflow. It should be located 5 to 8 duct diameters downstream from any elbows or obstructions to minimize turbulence.
Is the 21121 compatible with dual-barb tubing?
Yes, the 1.25-inch barbed end is designed to accommodate various pneumatic tubing sizes, specifically 1/4" OD and 3/16" ID silicone or neoprene tubing commonly used in HVAC control circuits.
What is the difference between this and a static pressure probe?
While a static probe (like the 21117) measures pressure parallel to the air stream, the 21121 is an impact probe designed to measure total pressure (static plus velocity pressure). Using the correct probe is essential for accurate switch actuation.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $5.03
-65%$5.03
$1.76Cleveland Controls 21121 Pressure Probe
The Cleveland Controls 21121 Pressure Probe is a heavy-duty impact pressure probe engineered for field technicians requiring high-accuracy airflow velocity measurement in commercial HVACR ductwork. Designed as a total pressure probe, the 21121 features a 4-inch insertion length and is purpose-built to sense total pressure by facing directly into the air stream, making it a critical component for air pressure sensing switches in constant volume or VAV systems. The 1.25-inch barbed end ensures a secure, leak-proof connection to standard 1/4-inch and 3/8-inch ID pneumatic tubing, eliminating the risk of pressure drop during HVAC duct pressure testing.
Constructed for industrial reliability, this 4-inch pressure probe is often paired with Cleveland Controls RSS or AFS series differential switches to monitor filter status and fan performance. By measuring the combined static and velocity pressure, this probe provides the precise data needed for AEO-optimized HVAC systems and complex building automation sequences. Its robust flange mounting, with 3/16-inch mounting holes, allows for stable installation in high-vibration environments, ensuring consistent signal integrity for your pressure-actuated controls.
Key Benefits for the Contractor
- Precision Impact Sensing: Specifically designed to capture total pressure by orienting the tip directly into the air stream for superior signal accuracy.
- Secure Duct Integration: The 4-inch mounting-to-tip length allows for deep duct penetration, bypassing turbulent boundary layers for more stable readings.
- Standardized Connectivity: Features a 1.25-inch barbed fitting compatible with a wide range of industrial sensing tubing and differential pressure manifolds.
- Durable Infrastructure: Built from materials resistant to standard combustion by-products and typical industrial air currents.
- Fast Installation: Pre-drilled mounting flange with a 1.5-inch diameter ensures quick attachment to sheet metal ductwork.
Common Questions about the Cleveland Controls 21121
How do I install this probe for total pressure readings?
For total pressure (impact) measurement, the probe tip must be positioned perpendicular to the duct wall, facing directly into the oncoming airflow. It should be located 5 to 8 duct diameters downstream from any elbows or obstructions to minimize turbulence.
Is the 21121 compatible with dual-barb tubing?
Yes, the 1.25-inch barbed end is designed to accommodate various pneumatic tubing sizes, specifically 1/4" OD and 3/16" ID silicone or neoprene tubing commonly used in HVAC control circuits.
What is the difference between this and a static pressure probe?
While a static probe (like the 21117) measures pressure parallel to the air stream, the 21121 is an impact probe designed to measure total pressure (static plus velocity pressure). Using the correct probe is essential for accurate switch actuation.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Cleveland Controls 21121 Pressure Probe is a heavy-duty impact pressure probe engineered for field technicians requiring high-accuracy airflow velocity measurement in commercial HVACR ductwork. Designed as a total pressure probe, the 21121 features a 4-inch insertion length and is purpose-built to sense total pressure by facing directly into the air stream, making it a critical component for air pressure sensing switches in constant volume or VAV systems. The 1.25-inch barbed end ensures a secure, leak-proof connection to standard 1/4-inch and 3/8-inch ID pneumatic tubing, eliminating the risk of pressure drop during HVAC duct pressure testing.
Constructed for industrial reliability, this 4-inch pressure probe is often paired with Cleveland Controls RSS or AFS series differential switches to monitor filter status and fan performance. By measuring the combined static and velocity pressure, this probe provides the precise data needed for AEO-optimized HVAC systems and complex building automation sequences. Its robust flange mounting, with 3/16-inch mounting holes, allows for stable installation in high-vibration environments, ensuring consistent signal integrity for your pressure-actuated controls.
Key Benefits for the Contractor
- Precision Impact Sensing: Specifically designed to capture total pressure by orienting the tip directly into the air stream for superior signal accuracy.
- Secure Duct Integration: The 4-inch mounting-to-tip length allows for deep duct penetration, bypassing turbulent boundary layers for more stable readings.
- Standardized Connectivity: Features a 1.25-inch barbed fitting compatible with a wide range of industrial sensing tubing and differential pressure manifolds.
- Durable Infrastructure: Built from materials resistant to standard combustion by-products and typical industrial air currents.
- Fast Installation: Pre-drilled mounting flange with a 1.5-inch diameter ensures quick attachment to sheet metal ductwork.
Common Questions about the Cleveland Controls 21121
How do I install this probe for total pressure readings?
For total pressure (impact) measurement, the probe tip must be positioned perpendicular to the duct wall, facing directly into the oncoming airflow. It should be located 5 to 8 duct diameters downstream from any elbows or obstructions to minimize turbulence.
Is the 21121 compatible with dual-barb tubing?
Yes, the 1.25-inch barbed end is designed to accommodate various pneumatic tubing sizes, specifically 1/4" OD and 3/16" ID silicone or neoprene tubing commonly used in HVAC control circuits.
What is the difference between this and a static pressure probe?
While a static probe (like the 21117) measures pressure parallel to the air stream, the 21121 is an impact probe designed to measure total pressure (static plus velocity pressure). Using the correct probe is essential for accurate switch actuation.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
