Dwyer 1211-8 offre

• Tous les modèles ont des colonnes flexibles en plastique/vinyle et une balance avec ressort en acier flexible calibré en pouces d'eau avec de l'eau et en pouces de mercure avec mercure
• La balance est montée entre les colonnes pour éliminer erreur de parallaxe et possède un réglage du zéro coulissant de 2"
• Sa construction en nylon moulé rend cette ensemble à l'épreuve de la corrosion, étanché et pratiquement incassable
• Les connexions de tubes s'étendent horizontalment pour permettre une liberté de 360°
• Les tubes ne se plient pas et ne rétrécissent pas
• Possède un clapet de sécurité pour la surpression au dessus de 2 colonnes pour prévenir la perte de liquide due aux hautes gammes de pression ou surtension en pression

Caractéristiques

• Simply unroll the manometer and set up to read static pressure, vacuum, or differential pressure
• Magnetic clips hold it firmly to any steel surface or hang it on a nail
• Turn connectors one revolution to open
• When the pressure is imposed, add the number of inches one column travels up to the number of inches the other column travels down
• When reading is completed turn connectors to seal columns, roll up manometer into compact coil and tuck it away in its plastic case or a tool box - no fluid lost
• No loose caps or inserts to lose
• Cover a wide range of pressure readings from 4-0-4" up to 60-0-60"
• Use them in determining velocity and static pressures, for leakage, fan and blower tests, calibrating control devices, checking gas pressure and many other applications
• All models have flexible vinyl-plastic columns and flexible spring steel scale calibrated in inches of water using water; and inches of mercury using mercury
• Scale is centre-mounted between columns to eliminate parallax error and has a full 2" sliding zero adjustment
• Features exclusive moulded nylon tubing connector assemblies with rapid shutoff design in an acrylic plastic top
• One turn counter clockwise and the instrument is ready for use
• Another turn seals the tubes completely
• Moulded all-nylon construction makes this assembly corrosion-proof, leak-proof and practically unbreakable
• Tubing connectors extend horizontally allowing 360° freedom
• Tubes won't bend or pinch off
• Features over pressure safety traps in the top of both columns to prevent loss of fluid due to over range pressures or surges in pressure
• Suitable for intermittent total pressure to 50 psi and vacuum not exceeding 20" Hg
• Avoid temperatures above 130°F and continuous high total pressure
• Not for use with red gauge oil; use only water or mercury