Delta OHM HD3409.2, Manual

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Command Response Description
LD PRINTOUT OF LOG Print data logged in flash
LE & Erase data in flash memory
LUAn
& Sets the unit of measurement for the temperature. n=0 > °C
n=1
> °F
LUBn
& Sets the unit of measurement for the dissolved oxygen
n=0 > mg/l O
2
n=1 > %O
2
n=2 > mbar
RA & # Reading of LOG/PRINT interval set
RP & 725 Battery level (Resol. 0.01V)
RUA U= °C Temperature measurement unit
RUB U= % Sat Dissolved Oxygen measurement unit
WA# &
Setting LOG/PRINT interval.
# is a hexadecimal number 0…D that represents the position of the
interval in the list 0, 1, 5, 10, …, 3600 seconds.
WC0 & Setting SELF off
WC1 & Setting SELF on
Command characters are exclusively upper case characters. Once a correct command is entered, the
instrument responds with "&"; when any wrong combination of characters is entered, the instrument
responds with "?". The instrument response strings end with the sending of the CR command (Car-
riage Return). The instrument does not send the LF command (Line Feed).
Before sending commands to the instrument via the serial port, locking the keyboard to avoid func-
tioning conflicts is recommended: use the P0 command. When complete, restore the keyboard with
the P1 command.