MAS Mass Flowmeter

Brand: KOBOLD Instruments, Inc.

The KOBOLD MAS model mass flowmeter makes very precise measurements of the mass flow rate of gases in different measuring ranges from 0-10 Nml/min to 0-500 Nl/min nitrogen. The operation of the meter is based on the calorimetric principle. For indication of 98% of the actual flow, the response time is 2 s.

The meter may be installed in any position.

In contrast with most volumetric flowmeters, no temperature or pressure correction is required.

This means that the MAS model is ideally suited for almost every gas flow application. Typical industrial applications are process control, laboratory measuring tasks, OEM applications, gas indication panels, leakage and filter monitoring.

The MAS is available either with analogue output only, or in addition with digital indication. The 3½-digit LCD display is infinitely rotatable through 180°. Glass-fibre-reinforced Nylon® or stainless steel may be used in the manufacture of wetted parts. Seal materials is FPM (Kalrez or Neoprene upon request).

The MAS model may be operated with 12-15 VDC (24 VDC optional). MAS-5015 or MAS-5000 are recommended as power supplies.

Typically, a 0-5 VDC (or 4-20 mA optional) analogue signal is available as output signal. This allows recording, data storage, and control functions to be implemented.

Specifications

Accuracy

  • ± 1 % of Full Scale - Option
  • ± 1.5 % of Full Scale with Calibrated

Adjustment

  • 9 Adjustments - Tilting Indicator

Ambient Temperature Range

  • 50° C (122° F) - Maximum

Applications

  • Oil Free Gases
  • Suited Only for Dry

Flow Rate

  • 0 to 500 Nl/min for Gas

Mounting Position

  • Any Orientation

NPT Connection

  • 1/4" NPT Female

Operating Pressure

  • psi: 145 (kPa: 1,000, bar: 10) - Maximum

Output

  • 0-5 Vdc - Linear (Load Minimum: 2,000 ohms)
  • 4-20 mA - Option (Load, Maximum

Output Load

  • 500 to 2,000 ohms - Load Resistance

Process Temperature

  • 50° C (122° F) - Maximum

Repeatability

  • ± 0.5 % of Full Scale

Response Time

  • 6 seconds Typical - within ± 2 % of Final Value over 25-100 % of Full Scale
  • 800 milliseconds Time Constant

Rotation

  • 180° - Tilting Indicator

Seat / Seal Material

  • FPM

Supply Pressure Effect

  • 0.3 % of Full Scale / bar

Supply Voltage

  • 12-15 Vdc
  • 24 Vdc - Optional

Temperature Effect

  • 0.15 % of Full Scale/°C

Wetted Materials

  • 316L Stainless Steel
  • Glass-Fibre-Reinforced Nylon

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