Vaisala DMT152 - Manual (Page 20)

User's Guide _______________________________________________________________________
18 ___________________________________________________________________ M210865EN-F
8. Turn on the power supply. The DMT152 performs self diagnostics
at startup, and the output is frozen for several minutes. The
transmitter will output an approximated reading after one minute,
but accurate measurement will only be available after the startup
procedure is complete.
Normal operation is typically achieved in 10 … 15 minutes. If the
measurement environment changes during the startup, the
startup may take up to 15 minutes.
NOTE The transmitter always performs the self-diagnostic procedure and
sensor purge when starting up. Keep the transmitter continuously
powered to optimize its measurement performance and availability.