Vaisala GMP251 - Page 9

Syntax Description
rsel [channel parameter release_ppm
set_ppm release_value set_value
startup_value error_value]<cr>
Configure relay operation of the channel.
channel = Analog output channel
• 1 = voltage output (V): not used with relay
• 2 = current output (mA): only use this option with
the relay box.
parameter = The parameter that is output on analog
channel. The only option is CO2 (in ppm).
release_ppm = CO
2
level at which the relay is
released.
set_ppm = CO
2
level at which the relay is activated.
release_value = The current output (mA) when
the relay is released.
set_value = Current (mA) output when the relay is
activated. Set to 12 when using the relay box with
GMP251/252.
startup_value = During probe start-up, if the CO
2
ppm level falls between the release_ppm and
set_ppm values, startup_value shows the state
of the relay (mA): the relay is either activated,
released, or in error state.
error_value = The current (mA) that is output
when the probe is in an error state.
Table 5 Rsel Command for GMP250 Software Version 1.2.9
Syntax Description
rsel [channel]<cr>
Show current relay settings.
channel = Analog output channel
rsel [channel parameter release_ppm
set_ppm set_value error_value]<cr>
Configure relay operation of the channel.
channel = Analog output channel
• 1 = voltage output (V): not used with relay
• 2 = current output (mA): only use this option with
the relay box.
parameter = The parameter that is output on analog
channel. The only option is CO2 (in ppm).
release_ppm = CO
2
level at which the relay is
released.
set_ppm = CO
2
level at which the relay is activated.
set_value = Current (mA) output when the relay is
activated. Set to 12 when using the relay box with
GMP251/252.
error_value = The current (mA) that is output
when the probe is in an error state.
Chapter 1 – Relay Box Quick Guide
9