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| Dead Weight Tester, Pneumatic, Floating ball Type |
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| Model No.︰ | - |
| Brand Name︰ | Henry |
| Country of Origin︰ | China |
| Unit Price︰ | - |
| Minimum Order︰ | - |
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Principle:
Henry DTB Series deadweight tester is based on the fundamental pressure principle:
P = F/A
where pressure (P) is defined as the product of the downward force (F) of the weights when applied to the effective area (A) of the ball within the nozzle. Air source supplies input pressure through the built-in flow regulator. It makes the ball float up within the tapered section of the nozzle and gas escapes past the ball and returns through the dynamic stabilization regulator (pressure output). The ball is self-centralized in its position by the flowing past gas, ensuring the ball without contacting the nozzle. Adding or removing weights causes the ball falling or rising, affecting the gas flow. The flow regulator sense the change and adjusts the pressure to
bring the system back into equilibrium. |
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| Specifications︰ | Technical Specifications:
Accuracy:
Standard version: 0.050% of reading
Optional version: 0.025% of reading
Temperature:
If unspecified, the instrument will be manufactured for inH2O at 20 deg. C, according to ISA. Temperature coefficient is 0.000017 per deg. C. Operating range: 15 to 30 deg. C.
Gravity:
As specified on order. If unspecified, then International Standard 980.665 cm/s2.
Standard models available:
Model Pressure Range
DTB -10 0.001 to 0.25 MPa
DTB -11 10 to 2500 mbar
DTB -12 4 to 1000 inH2O
DTB -20 0.005 to 0.4 MPa
DTB -21 50 to 4000 mbar
DTB -22 25 to 1500 inH2O
DTB -30 0.005 to 0.6 MPa
DTB -31 0.05 to 6 bar
DTB -40 0.05 to 2.5 MPa
DTB -41 0.5 to 25 bar
DTB -50 0.05 to 6 MPa
DTB -51 0.5 to 60 bar
Intermediate ranges and other engineering units are optional.
Dimensions and Weight:
DTB-1x/2x/3/:
38 x 24 x 26 cm (L x D x H), 12~15 kg
DTB-4x/5x:
39x25x29 cm (L x D x H), 20~26 kg
Air Source Rated Pressure and Flow Consumption:
Dry, clean, and oil-free compressed air or bottled nitrogen shall be used. The rated and maximum pressure is specified below, while minimum pressure shall not lower than 1.5 times of output pressures but at no means less than 3 bar. Consumption of gas is also specified below.
DTB-1x 5 bar (Max.7 bar) 0.3 m3/h
DTB-2x 6 bar (Max.10 bar) 0.75 m3/h
DTB-3x 9 bar (Max.10 bar) 0.9 m3/h
DTB-4x 40 bar (Max.42 bar) 1.2 m3/h
DTB-5x 90 bar (Max.94 bar) 1.5 m3/h
Pressure inlet and outlet connectors and pipe are supplied.
Weight Sets and Carriers:
Stainless steel weight sets and weight carriers are designed for convenient calibration steps and better stability. Start pressure as low as 4 inH2O and pressure increment as narrow as 1 inH2O are optional.
Other Henry pressure products:
Deadweight testers:
A full range of Henry primary or transferring standards for pressure from -1 to 4000 bar with accuracy up to 0.02% IR are available.
Electronic Pressure Calibrators:
Henry Electronic Pressure Calibrators with accuracy 0.1% and 0.05% FS are available.
Pressure Sources:
Henry Hand held pumps and Comparison pumps are available as portable pressure generators for checking pressure instruments, when equipped with Henry master test gauges or Henry digital indicators. |
| Advantages︰ | Based on unique design and ISO9001 certified quality production, Henry DTB Series deadweight tester ensures best performance and minimum maintenance cost because of features below.
- Ceramic nozzle and hardened ball enabling
tough temperature environment.
- Stainless steel weight sets for better stability.
- Weight sets and weight carriers designed for convenient calibration steps.
- Lower start pressure down to 4 inH2O and narrower pressure increments down to 1 inH2O optional.
- Calibration in Bar, mBar, inH2O, PSI and other
engineering units selectable.
- Ease of maintenance.
- Durable rugged case.
- Portable for jobs on-site. |
| Export Markets︰ | World Wide |
| Standard Met︰ | ASTM, ISA, ISO, GB |
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