TPS 90-FL - Menu and Function Keys; Numeric Keys; Enter Key; Delete Key

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1.3 Menu and Function Keys
Press the to function keys to select desired options within the menu system.
Additionally, these keys perform the following function directly in normal measurement mode…
: Press to record readings into the Logger. See section 9.
: Press to start and stop the optional Dissolved Oxygen stirrer. See section 3.5.
: Press to transmit current reading plus date and time to the RS232 port. See section 10.2.
: Press to start automatic datalogging in the Sampling Period and Duration mode. See section
9.3.3.
: Press to obtain context-sensitive help messages. This function is disabled within menus.
1.4 Numeric Keys
Used to enter values during set-up and calibration. A negative sign and decimal point are provided.
1.5 Enter Key
Press the key to accept default values or those entered on the Numeric Keypad.
1.6 Delete Key
Press the key to make corrections to values entered on the Numeric Keypad.
1.7 ON and OFF Keys
Press the relevant key to switch the 90-FL on and off as required.
1.8 80 Character Display
80 character alphanumeric display with user-friendly menu and context-sensitive help system.
Shows Dissolved Oxygen, Conductivity/TDS, pH, Temperature, Date and Time simultaneously.