Bronkhorst LIQUI-FLOW mini (till 01-07-2013) - Manual (Page 18)

9.17.065 page 18
4.1.7 Disabling micro switch
It is possible to disable the Micro Switch on top of the instrument. This can prevent undesired use of this button.
Disabling the micro switch can be performed with the following parameter:
IOStatus
Type Access Range FlowDDE FLOW-BUS
Unsigned char RW
0…255 86 114/11
Bit 3 [7..0] is used to disable the micro switch.
1 = micro switch disabled
0 = micro switch enabled
Procedure to disable the micro switch:
• Read IOStatus
• Add 8 to the read value
• Write IOstatus
Procedure to enable the micro switch:
• Read IOStatus
•
Subtract 8 from the read value
• Write IOstatus
4.2 Using mass flow meters on different fluids or under different conditions
4.2.1 Stored calibration fluids
LIQUI-FLOW mini instruments with digital pc-boards allow storage of max. 8 calibration curves for various fluids or
process conditions. Fluidsets can digitally be selected when the instrument is hooked-up by RS232 to a computer,
using (Bronkhorst) software tools.
4.2.2 Conversion factor calculation using Fluidat software
Bronkhorst High-Tech B.V. gathered the physical properties of over 600 fluids in a database called FLUIDAT.
Application software, such as FLOW CALCULATIONS, enables the user to calculate accurate conversion factors, not
only at 20°C/1 atm but at any temperature/pressure combination, both for gases and for liquids.
Apply to your distributor for more details of this software.
Check FLUIDAT® on http://www.fluidat.com
FLUIDAT® is a collection of routines to calculate physical properties of gases and liquids. These routines
are made available at the FLUIDAT® on the Net website.