Welch Allyn LC101 CO2 Module - User Manual - Manual (Page 58)

LC101 CO
2
Module OEM Implementation Manual
Page 58 Confidential Welch Allyn OEM Technologies
Two-Point User Calibration Sequence Example
NOTE Before performing a Two-Point User Calibration, a separate Zero Calibration must be
performed first. It is also recommended that both calibrations be performed at 75ºF in
order to maintain accuracy over the Module’s operating temperature range.
Seq Host Module Description
1 Host sends Unprotect command.
Module responds to command from host
2 dyyyy> Host sends calibration date.
Module responds with status - Calibration ready for next step, or
if date is invalid, response is Invalid Data, or
if not in unprotected measurement or autorun mode, response is Invalid
Operation (use ), or
if previous calibration is active, response is
Cal. Already in Progress, or
if the LC101 had been operating for < 5 min., response is Cal. Low Run
Time.
3 Host sends span gas value (in percent).
Module responds with status - Calibration ready for next step, or
if span gas value is invalid, response is Invalid Data, or
if not in unprotected measurement or autorun mode, response is Invalid
Operation (use ), or
if a calibration had not been started, response is
Cal. Not in Progress, or
if the calibration has exceeded its maximum time allowed, response is
Unable to Perform Cal., Missing Parameters.
4 Host sends Sample CO2 Zero Gas command.
Module responds with status - Calibration in Progress, or
if not in unprotected measurement or autorun mode, response is Invalid
Operation (use ), or
if a calibration had not been started, response is
Cal. Not in Progress, or
if the calibration has exceeded its maximum time allowed, response is
Unable to Perform Cal., Missing Parameters.
5 Host polls for completion of sampling.
Module responds with status - Calibration in Progress. Repeat this
step until a response other than is returned.
Module responds with status - Calibration ready for next step, or
if the calibration has exceeded its maximum time allowed, response is
Unable to Perform Cal., Missing Parameters, or
if acquiring data does not meet specifications, response is
Unable to
Perform Cal., Data Error.