Cal i bra tion of the MST2000 | OPERATION MANUAL |
16.2DP CALIBRATION
þNOTE: For MST2000 Trans mit ters with CONTINUOUS PURGE OPTION. Do not use a hand pump, or com- pres sion cyl in der type of pres sure source for the DP test sig nals. You must use a vented source to per- mit con tin u ous flow of purge air. Con tact the fac tory for ad di tional in for ma tion on calibrating
trans mit ters with con tin u ous purge.
þNOTE: Do not turn off the purge air sup ply to use the trans mit ter as though it does not have the purge op tion; this will cause er rors.
A.Connect an accurate test DP sig nal to the MST2000, equal to the 0% minimum range value.
B.While in the PROGRAMMING MODE, step to the INPUTO parameter to display the existing value of INPUT OFFSET.
C.Press the EDIT/SAVE key once to dis play the DP read ing. Use the INCREMENT/DECREMENT keys as needed to ad just the dis play to match the test DP sig nal value.
D.Press the EDIT/SAVE key to exit the edit mode and to save the INPUT OFFSET value, (even if it was not changed).
E.Ad just the test DP sig nal to the 100% max i mum range value. Step to the INPUTG pa ram e ter to dis- play the ex ist ing value of INPUT GAIN.
F.Press the EDIT/SAVE key once to dis play the DP read ing. Use the INCREMENT/DECREMENT keys as needed to ad just the dis play to match the test DP sig nal value.
G.Press the EDIT/SAVE key to exit the edit mode and to save the INPUT GAIN value.
þNOTE: Changes to INPUTO or INPUTG will af fect both the dis play & the mA for any ap plied DP value. Ad justing OUTPTO or OUTPTG will af fect only the mA value for any ap plied DP value.
Page 34 | MST2000 Multivariable SMARTFLOW ® Transmitter | Brandt Instruments, Inc. |
