Detailed Product Description

FLOW SWITCH BFS150

 

• Operation in wide flow rates for gases, water & oil
• Immunity to contaminated or corrosive liquids
• Insensitive to pulsating and entrapped air
• Response time of only 15 seconds
• Up to 250 Bar process pressure
• Easy programming and calibration
• Self diagnostics and troubleshooting
• Local indicator available

GENERAL DESCRIPTION

BASI`s BFS150 flow switch is designed to operate with lowviscosity, non-viscous, or dirty gases and liquids with moderate flow rates as air and non-aggressive gases, water and water

solutions, oil, and fuels. This model uses the well-know principle of thermal dispersion, based on the measurement of temperature difference deviation due to the flow rate via two temperature sensors immersed in the controlled medium. An output relay switches when the flow rate reaches the set-point value after maximum 15 sec. response time. An enhanced

microcontroller design allows simple user calibration and continuous self-diagnostic. Local programmable indicator for process temperature is also available as an option.

 

TECHNICAL SPECIFICATIONS

Housing : Plastic IP65

Wetted parts : SS304 (1.4301)

Adjustment : Selector

Indikation : Green LED output, red LED setting

Digital indicator : Process temperature (option)

Flow range : 0,01 to 1,5 m/sec (water) 0,02 to 3 m/sec (oil) 0,1 to 12 m/sec (gases)

Warm-up time : 45 sec

Process connection : G ¼, G ½, ¼NPT, ½NPT

ADJUSTMENT

Span calibration : 0-60 sec

Zero calibration : 0-60 sec

Hysteres : 10% of span

Time delay : 2 sec (factory set)

OUTPUT

Relay contact : SPDT 250VAC 3A activates at flow rate over set-point

Function : Change-over (DPDT)

  

INSTALLATION

Power supply : 230VAC or 24VDC

Power consumption : Max 6VA

Ambient temp : -10 to +65°C

Process temperature: 0-100 °C (CIP up to 140 °C)

Process pressure : Up to 250 bar

Protection : IP65

Mounting : In process G ¼, G ½, ¼NPT, ½NPT

Weight : Max 1kg

EMC : EN 50081-1, EN 50082-2,EN 61010-1 73/23/EEC & 89/336/EEC

 

ORDER INFORMATION

 

BFS150

FLUID        SUPPLY       CONNECTION     OPTION

Z Specify    Z Specify       Z Specify             X None

G Gases    A 230VAC     Q23 G 1/4           A Indicator

W Water    D 24VDC       Q24 ¼ NPT            for temp.

L Oil                               Q4  G ½

                                      Q10 ½ NPT