7ML19981CJ01 MiniRanger Plus Page 41
Functional
Volume
Note:
Volume calculation is an optional feature. MiniRangers with the volume
feature have this icon on the front: .
If reading is programmed for volume, P050 entry other than 0, then the mA
output is proportional to volume.
To program the unit for volume, set:
• operation (P001) to level “1” (see page 55),
• tank shape (P050) to a value other than “0” (see page 57),
• other volume parameters (P051 to P053) as required.
Fail-safe
When the fail-safe timer (P070) expires, the mA output responds as follows *
Status
Fail-safe Mode
(071)
0/4 – 20 20-0/4
high 20 0/4
low 0/4 20
hold hold hold
* not applicable to high level switch operation, P001 = 4. In such a case,
the measurement immediately defaults to a low value.
Run / Program
When the MiniRanger Plus changes from run to program, the transceiver
stops operating and the last measurement is stored; the associated reading,
alarm status and mA output are held (pump control relays are turned off). As
a courtesy, the unit reverts to the parameter last addressed during the
previous program session. During program, the unit does not respond to the
process unless the calibration parameters (P650 and P651) are accessed.
Note:
If the calibration parameters are accessed, only the reading becomes
responsive.
Upon return to run, the transceiver resumes operation. The reading and
associated outputs default to the last measurement taken, either during the
previous run session or as a result of having accessed a calibration
parameter. The reading and associated outputs migrate to the current
process level at a rate controlled by the measurement response (P003).
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