Vaisala MMT330 - Manual (Page 125)

Chapter 4 _________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 125
RSEL
Use the serial line to select the quantity, setpoints and hysteresis or
enable/disable the relay outputs. Enter the RSEL command.
RSEL [q1 q2 q3 q4]
where
q1 = Quantity for the relay 1 or Fault/Online
q2 = Quantity for the relay 2 or Fault/Online
q3 = Quantity for the relay 3 or Fault/Online
q4 = Quantity for the relay 4 or Fault/Online
Factory setting: All relays disabled.
The MMT330 measures the following quantities:
- Water activity (aw)
- Temperature (T) (metric unit: ºC, non-metric unit:ºF)
Example of window limit switch: Selecting relay 1 to follow aw
measurement and relay 2 to follow temperature measurement. Two relay
setpoints are set for both relays.
>rsel aw t
Rel1 aw above: 0.00 ? 0.3
Rel1 aw below: 0.00 ? 0.4
Rel1 aw hyst : 0.00 ? 0.02
Rel1 aw enabl: OFF ? on
Rel2 T above: 0.00 'C ? 30
Rel2 T below: 0.00 'C ? 40
Rel2 T hyst : 0.00 'C ? 3
Rel2 T enabl: OFF ? on
Example of normal limit switch: Selecting relay 1 to follow aw, relay 2
to follow temperature, relay 3 to follow online status, and relay 4 to
follow fault status.
>rsel aw t online fault
Rel1 aw above: 0.00 ? 0.8
Rel1 aw below: 0.00 ? 1.0
Rel1 aw hyst : 0.00 ? 0.01
Rel1 aw enabl: ON ?
Rel2 T above: 0.00 'C ? 30
Rel2 T below: 0.00 'C ? 60
Rel2 T hyst : 0.00 'C ? 2
Rel2 T enabl: ON ?
Rel3 ONLI above: -
Rel3 ONLI below: -
Rel3 ONLI hyst : -
Rel3 ONLI enabl: ON ?
Rel4 FAUL above: -
Rel4 FAUL below: -
Rel4 FAUL hyst : -
Rel4 FAUL enabl: ON ?