System Settings - DeeEmm/DIY-Flow-Bench GitHub Wiki

Overview

The system settings govern system operation and determine how your flow bench operates. The Systems settings page also contains calibration data and can be access via the 'Settings' link in the navigation bar of the GUI

Wifi Info

The Wifi info sets Wifi related parameters and determines how DIYFB connects to local and ad-hoc WiFi networks

  • Wifi SSID: Wifi "service set identifier" - Name of your local Wi-Fi network:
  • Wifi Password: Password used to access your local Wifi network
  • Wifi AP SSID: Name of the DIYFB Wifi direct access point
  • Wifi AP Password: Password used to access the DIYFB Wifi access point
  • Wifi Hostname: Network DHCP client name of DIYFB Device
  • Wifi Timeout: Connection timeout in milliseconds

Bench Settings

  • Bench Type: Select type of flow bench
  • MAF Diameter (mm): Diameter of custom MAF housing (leave at '0' to use default)
  • Temp Unit (°C / °F): Temperature unit for GUI
  • Lift Interval (mm / inch): Sets the Y-axis spacing between lift points on the DataGraph. Recommended values are 1.5(mm) for metric benches and 50(thou) for imperial benches to give an overall lift of 18mm and 600 thou respectively.

Resolution and Accuracy

  • General Accuracy: Number of decimal place displayed for general sensor tiles in GUI
  • Flow Accuracy: Number of decimal place displayed for Flow tile
  • Flow Value Rounding: Sets whether values are rounded to the nearest integer, the nearest half or no rounding is applied

Data Filters

Data filters smooth the flow value displayed in the GUI and help prevent or minimise flickering / fluctuation. This helps improve accuracy. The stronger the effect of the data filter, the slower the GUI values will change

  • Data Filter Type: There are several data filters used, pick the one that best suits your application / system
  • Min Flow Rate (cfm): The minimum flow value is used to determine if the bench is running
  • Min Pressure (in/H2O): The minimum pressure value is used to determine if the bench is running

Conversion Settings

The conversion settings apply to how flow data is displayed in the flow tile.

  • Adj Flow pRef (in/H2O): The reference depression used for the 'Adjusted Flow' Tile. When viewing the Adjusted Flow Tile, the displayed value is converted to display at this reference depression. For example if this value is set to 28. The Adjusted Flow Tile will display the current flow converted to 28" depression. This is useful for floating depression benches.
  • Ref Standard (SCFM): The reference standard used for the 'Standard Flow' tile. When viewing the Standard Flow tile, the displayed value will be converted to the temperature + barometric pressure and relative humidity defined by the selected standard. Note that the 'Standard Flow' tile value is relative to the depression value shown on the 'Depression' Tile.
  • Std Adjusted Flow: This setting determines whether the 'Adjusted Flow' Tile displays the ACFM Flow Tile value adjusted to the depression set in the Adj Flow pRef setting or the 'Standard Flow' tile value.

DataGraph Setting

  • Datatype: This setting determines which Flow tile value will be recorded on the DataGraph
  • Max Flow Value: This determines the Max X axis value for the DataGraph. By default the firmware checks the maximum flow value of the MAF and uses this this to determine the Axis scaling. This can be manually overriden by this setting

Calibration Orifice Settings

  • Cal Orifice Flow Rate (cfm): When calibrating your bench you will use a calibrated orifice plate. This is the CFM value of that plate
  • Cal Orifice pRef (in/H2O): Likewise, this setting is the depression that your calibration orifice was measured at.
  • Cal Orifice Temperature (C): Not currently implemented
  • Cal Orifice Baro (hPa): Not currently implemented
  • Cal Orifice Humidity (RH%): Not currently implemented

Orifice Data

The orifice data is for a range of up to six orifice plates used to set flow depression in differential style flow benches. These orifices can be selected on the dashboard page and will determine the calculated flow rates based on the values saved below.

To view the orifice selection control, the 'Bench Type' setting above must be set to a differential type of bench. The control is hidden if the Bench Type is set to MAF.

  • Orifice #1-6 Flow Rate (cfm): Differential / orifice bench flow range orifice CFM rating
  • Orifice #1-6 pRef (in/H2O):: Differential / orifice bench flow range orifice test depression

API Settings

  • API Delimiter: The char type used to delimit data sent via API
  • Serial Baud Rate: Baud rate for serial API data transmissions (default 115200)

Calibration Data

  • Calibration Offset (cfm): This is the difference between the value measured using the calibration orifice and the orifice's calibrated value. This is set by using the 'Calibrate Flow Offset' function
  • Leak Test Baseline (cfm): This is the value measured using the 'Calibrate Leak Test' function
  • Leak Test Offset (cfm): This is a manual leakage value that can be applied if required.
  • Leak Test Baseline (Rev) (cfm): Not currently implemented
  • Leak Test Offset (Rev) (cfm): Not currently implemented

For a full descriptions on flow bench calibration, please refer to the Calibration page