Dwyer Instruments 1211-36 Slack Tube Manometer
The Dwyer Instruments 1211-36 Slack Tube Manometer is a field-proven U-tube manometer designed for technicians who require laboratory-grade precision in a portable, rugged format. Featuring a dual-column range of 18-0-18 inches w.c., this instrument is specifically engineered for duct static pressure measurement, filter monitoring, and setting precise damper positions. The flexible vinyl-plastic columns and spring steel scale allow the unit to roll up into a compact diameter for easy storage in a truck or tool bag without the risk of fluid loss, thanks to the integrated over-pressure safety traps.
This pressure measurement tool utilizes 17.5 ounces of mercury or water as the indicating fluid. The center-mounted scale features a sliding zero adjustment to eliminate parallax error, ensuring high-accuracy readings during HVAC duct testing and gas pressure calibration. The 1211-36 is equipped with molded nylon tubing connectors with a rapid shutoff design; a single turn seals the columns completely, making it a reliable differential pressure gauge for intermittent total pressures up to 50 psi and vacuum pressures up to 20" Hg.
Key Benefits- Field Portability: Specialized roll-up design allows for easy transport while maintaining the accuracy of a rigid laboratory-grade "U" gauge.
- Magnetic Mounting: Integrated magnetic clips allow for hands-free operation on steel ductwork and furnace cabinets.
- Durability: Built with corrosion-proof nylon and flexible vinyl to withstand demanding mechanical environments and rough handling.
- Fluid Security: Built-in safety traps prevent fluid loss during pressure surges, reducing the need for frequent refills and recalibration.
Can I use red gauge oil in the 1211-36?
No, this model is designed strictly for use with water or mercury. Using red gauge oil will result in inaccurate readings and potentially damage the vinyl columns.
What is the maximum temperature rating for this manometer?
The flexible columns and components are rated for temperatures up to 130°F (54°C). Avoid continuous exposure to high-heat environments to maintain material integrity.
How do I prevent parallax error when reading the scale?
The scale is center-mounted between the tubes. Utilize the 2-inch sliding zero adjustment to align the scale perfectly with the fluid meniscus before taking static pressure measurements.
This item is not eligible for free shipping.
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.
Dwyer Instruments 1211-36 Slack Tube Manometer
The Dwyer Instruments 1211-36 Slack Tube Manometer is a field-proven U-tube manometer designed for technicians who require laboratory-grade precision in a portable, rugged format. Featuring a dual-column range of 18-0-18 inches w.c., this instrument is specifically engineered for duct static pressure measurement, filter monitoring, and setting precise damper positions. The flexible vinyl-plastic columns and spring steel scale allow the unit to roll up into a compact diameter for easy storage in a truck or tool bag without the risk of fluid loss, thanks to the integrated over-pressure safety traps.
This pressure measurement tool utilizes 17.5 ounces of mercury or water as the indicating fluid. The center-mounted scale features a sliding zero adjustment to eliminate parallax error, ensuring high-accuracy readings during HVAC duct testing and gas pressure calibration. The 1211-36 is equipped with molded nylon tubing connectors with a rapid shutoff design; a single turn seals the columns completely, making it a reliable differential pressure gauge for intermittent total pressures up to 50 psi and vacuum pressures up to 20" Hg.
Key Benefits- Field Portability: Specialized roll-up design allows for easy transport while maintaining the accuracy of a rigid laboratory-grade "U" gauge.
- Magnetic Mounting: Integrated magnetic clips allow for hands-free operation on steel ductwork and furnace cabinets.
- Durability: Built with corrosion-proof nylon and flexible vinyl to withstand demanding mechanical environments and rough handling.
- Fluid Security: Built-in safety traps prevent fluid loss during pressure surges, reducing the need for frequent refills and recalibration.
Can I use red gauge oil in the 1211-36?
No, this model is designed strictly for use with water or mercury. Using red gauge oil will result in inaccurate readings and potentially damage the vinyl columns.
What is the maximum temperature rating for this manometer?
The flexible columns and components are rated for temperatures up to 130°F (54°C). Avoid continuous exposure to high-heat environments to maintain material integrity.
How do I prevent parallax error when reading the scale?
The scale is center-mounted between the tubes. Utilize the 2-inch sliding zero adjustment to align the scale perfectly with the fluid meniscus before taking static pressure measurements.
This item is not eligible for free shipping.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Dwyer Instruments 1211-36 Slack Tube Manometer is a field-proven U-tube manometer designed for technicians who require laboratory-grade precision in a portable, rugged format. Featuring a dual-column range of 18-0-18 inches w.c., this instrument is specifically engineered for duct static pressure measurement, filter monitoring, and setting precise damper positions. The flexible vinyl-plastic columns and spring steel scale allow the unit to roll up into a compact diameter for easy storage in a truck or tool bag without the risk of fluid loss, thanks to the integrated over-pressure safety traps.
This pressure measurement tool utilizes 17.5 ounces of mercury or water as the indicating fluid. The center-mounted scale features a sliding zero adjustment to eliminate parallax error, ensuring high-accuracy readings during HVAC duct testing and gas pressure calibration. The 1211-36 is equipped with molded nylon tubing connectors with a rapid shutoff design; a single turn seals the columns completely, making it a reliable differential pressure gauge for intermittent total pressures up to 50 psi and vacuum pressures up to 20" Hg.
Key Benefits- Field Portability: Specialized roll-up design allows for easy transport while maintaining the accuracy of a rigid laboratory-grade "U" gauge.
- Magnetic Mounting: Integrated magnetic clips allow for hands-free operation on steel ductwork and furnace cabinets.
- Durability: Built with corrosion-proof nylon and flexible vinyl to withstand demanding mechanical environments and rough handling.
- Fluid Security: Built-in safety traps prevent fluid loss during pressure surges, reducing the need for frequent refills and recalibration.
Can I use red gauge oil in the 1211-36?
No, this model is designed strictly for use with water or mercury. Using red gauge oil will result in inaccurate readings and potentially damage the vinyl columns.
What is the maximum temperature rating for this manometer?
The flexible columns and components are rated for temperatures up to 130°F (54°C). Avoid continuous exposure to high-heat environments to maintain material integrity.
How do I prevent parallax error when reading the scale?
The scale is center-mounted between the tubes. Utilize the 2-inch sliding zero adjustment to align the scale perfectly with the fluid meniscus before taking static pressure measurements.
This item is not eligible for free shipping.
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.
