Emerson 8700 Series, Reference Manual

Page: 54 / 136

Reference Manual
00809-0100-4793, Rev CA
August 2004
Rosemount 8742C
5-2
Local Display
Configuration
The local display can be configured in four languages: English, Spanish,
French, and German. The display language can be changed by changing the
transducer block parameter, DISPLAY_MODE. Table 5-1 lists the phrase,
along with the text shown on the display.
Calibration
Pulsed DC magnetic flowmeters do not typically require periodic calibration.
There are no moving parts in a magnetic flowmeter flowtube or transmitter.
However, it is possible to do an electronics trim on the transmitter. If a
magmeter is not performing properly, refer to Section 5: Troubleshooting.
Electronics Trim
Electronics trim
is the function by which the factory calibrates the transmitter.
This procedure is rarely needed by customers. It is only necessary if you
suspect the Rosemount 8742C is no longer accurate. A Rosemount 8714
Calibration Standard is required to complete an electronics trim. Attempting
an electronics trim with out a Rosemount 8714 may result in an inaccurate
transmitter or an error message. Electronics trim must be performed only with
the coil drive mode set to 5 Hz and with a nominal flowtube calibration number
stored in the memory.
NOTE
Attempting an electronics trim without a Rosemount 8714D may result in an
inaccurate transmitter, or a “TRIM FAILURE” message may appear. If this
message occurs, no values were changed in the transmitter. Simply power
down the Rosemount 8742C to clear the message.
To simulate a nominal flowtube with the Rosemount 8714D, you must change
the following four parameters in the Rosemount 8742:
Table 5-1. Local Display screens for Rosemount 8742C Magnetic Flowmeter Transmitter with F
OUNDATION
™
fieldbus
Definition English Spanish French German
Model number of transmitter 8742C Magmeter Caud. Mag. 8742C Trans Mag 8742C 8742C MID
Good status, no error messages Status: Good Estado: Bien Measure Bonne Messung OK
Grounding/Wiring Fault detected Grnd Wire Fault Falla Cabl Tierr Défaut Terre Fehler Erde/Verk
High transmitter temperature detected High 8742 Temp Temp 8742 Alta Temp 8742C Haute Hochtemp 8742
High process noise detected Hi Process Noise Ruid Proces Alto Bruits Détectés Proz Rauschen
Empty Pipe detected Empty Pipe Tubo Vacío Tube Vide Décelé Leitung Leer
Electronics Trim Failure detected Trim Failure Falla Ajuste Défaut Trim Trim Fehler
PV status is uncertain Status: Uncertain Estado: Incierto Mesure Douteuse Mesung Unsicher
Auto Zero Trim Failure detected AutoZero Failure Fallo AutoCero Défaut Autozéro AutoNull Fehler
Flow rate is over sensor range Flow > 12 m/s Caudal > 12 m/s Vitesse > 12 m/s Flow Zu Hoch
Transducer block mode is out of service Out of Service Fuera de Servic. BT Hors Service Ausser Betrieb
PV status is bad Status: Bad Estado: Mal Mesure Mauvaise Messung Schlecht
Electrode fault detected Electrode Fault Falla Electrodo Défaut Electrode Elecktrode Fehler
Flow rate is over sensor limit Flow > 13.2 m/s Caudal > 13.2 m/s Vitesse > 13,2 m/s Flow Zu Hoch
Coil drive open circuit detected Coil Drive Open Bobina Abierta Défaut Bobines Spule Defekt
Electronics failure detected Electronics Fail Falla Electrónic Panne Electroniq Elekronikdefekt
Electronics trim is in progress (two lines)
(1)
Electronic Trim Ajust Electrónic Réglage Electron Elektronik Trim
In Progress En Progreso En Cours Läuft
Auto Zero Trim in progress (two lines)
(1)
Auto Zero Auto Cero Réglage Autozéro AutoNull
In Progress En Progreso En Cours Läuft
Learn Empty Pipe in progress (two lines)
(1)
Learn E Pipe Detec. Tubo Vacío Réglage TubeVide Leitung Leer Erk
In Progress En Progreso En Cours Läuft
(1) The “In Progress” string must be a maximum of 14 characters. The 16th character on the 2nd line of the display is reserved for a special character during
the trim functions.