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Tokyo Keiso VDT Series Water-Cone Flowmeter

Made in Japan

Manufacturer: Tokyo Keiso

Model: VDT series

VDT series is the indicator integrated type Wafer-Cone® differential pressure flowmeter; VH series Wafer-Cone® flowmeter and DT series multi digital differential indicator are integrated into one flowmeter.
Its principle is based on the Bernoulli’s theorem like orifice flowmeter. The V-cone inside pipe throttles flow and generates differential pressure corresponding flow rate.
The precision cast body made in lost wax process has a simple and rigid construction. Shorter straight runs and lower pressure loss than orifice save your construction cost and energy.

Features

  • Easy installation with self- centering mechanism
  • Direct mounting of compact differential pressure indicator requires no impulse piping
  • Less than 1/5 of orifice straight runs
  • Stable low differential pressure measurement allows wide rangeability
  • Stable low differential pressure measurement allows low pressure loss
  • Durable structure against wear or adhesion and maintenance free with stable operation
  • Easy-to-change flow direction at field
  • Easy-to-read big display and versatile indication functions

Applications

  • Flue gas flow management
  • HVAC(Heating ,ventilation and Air conditioning) system
  • Water treatment facilities
  • Refuse incinerator plants
  • Co-generation plants

Specifications

Measuring Fluids Liquids, Gases (Steam can not be measured)
Connection
(Meter) Size
25, 40, 50, 65, 80, 100 mm
Connection Wafer
Connection Rating JIS10K/20K, ANSI150/300, DIN PN16/40, GB PN1.6/4.0
Fluid Temperature Max. 70°C
Fluid Pressure Max. 0.5MPa
Flow Range
Water: Max. 0 to 119.73m³/h(at 20°C)
Min. 0 to 5.51m³/h(at 20°C)
Air: Max. 0 to 7591m³/h(nor) (at 0°C,0.5 MPa)
Min.0 to 77m³/h (nor) (at 0°C,0 MPa)
Indication Accuracy ±1.5% to 2.5% F.S.
Guaranteed
Accuracy  Range
Max. Rangeability: 14:1
Materials
Detector: Body: SCS 14A,  Cone and support: SUS316
3 way cock piece: Body: SCS 14, cock axis: SUS316,
O-ring: fluorocarbon rubber
Indication parts: Body: SUS316, Diaphragm: SUS316L,
Drain hole: Alumina, Seal: Ceramic
O-ring: fluorocarbon rubber
V-Cone β Ratio 0.45, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80  8 kinds
Flow Direction Either Bottom to top, Top to bottom, Left to right, Right to left
Power Supply
Battery type: Alkali dry battery (LR6)x2, 2 years continuous operation at 23°C
Current output type: 24 VDC±10%
Indication
Flow rate indication: 3-1/2 digit LCD with back light, 11 segment bar graph
Totalizer indication: 7-1/2 digit LCD with back light
Additional Function
Battery type: with a local indicator driven by battery
Current output type: 4 to 20 mA (2-wire), output accuracy :±0.5%F.S. at 23°C

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