Fluke RPM4 manual PPC3, Qdut

RPM4™ OPERATION AND MAINTENANCE MANUAL

PM	Pressure multiplier, used to adjust span of a Q-RPT or barometer to calibrate it.
Parallel Measurement	Operating mode of RPM4s with two Q-RPTs in which both Q-RPTs are used to measure
	together in parallel and the indicated pressure is the average of their readings. This
Mode
	creates a pseudo Q-RPT designated HL.
Pmax!	The maximum pressure limit of a Q-RPT.	If the pressure measured by the Q-RPT
	exceeds Pmax!, an overpressure condition occurs.
PPC3	Pressure controller calibrator manufactured by DHI. RPM4 can be used as an external
	reference device for a PPC3. PPC3 automates RPM4 pressure control.
	The transducer used by RPM4 for low uncertainty pressure measurement. May be
Q-RPT	designated as Hi, Lo or HL depending on its position and role in t he RPM4.
(Quartz Reference	Q-RPTs are designated by a leading A, G or BG (absolute, gauge or bi-directional
Pressure Transducer)	gauge) followed by three numbers and a letter indicating the maximum range of the
	Q-RPT in kPa (nnnK) or MPa (nnnM).
Rate	A DISPLAY function in which the rate of change of pressure in pressure unit/second is
	displayed.
	Front panel LED indication of when the pressure measured by RPM4’s active Q-RPT is
Ready/Not Ready	stable within the stability limit. Leading character of the second line when the inactive Q-
	RPT is displayed on the second line in RPT DISPLAY mode.
RPT2x	Parallel measurement mode in which both Q-RPTs of an RPM4 with two Q-RPTs are
	used together and the indicated pressure is the average of their measurements.
SDS (Self Defense	A system to protect Q-RPTs from overpressure made up of isolation and vent valves
System)	and internal operating logic. Applies only to Q-RPTs designated A7M or lower.
Span	The difference between FS and the lowest point in a range. For example, the span of a
	100 kPa FS range in negative gauge mode is nominally 200 kPa (from - 100 kPa to 100 kPa).
	A limit expressed in units of pressure per second (e.g., kPa/second). The stability limit is used
Stability Limit	as the Ready/Not Ready criterion. Ready if rate of change is less than stability limit.
	Not Ready if rate of change is greater than stability limit.
Target	The value from which deviations are measured in the Deviation DISPLAY function.
UL (Upper Limit)	A user settable maximum pressure limit.	When pressure exceeds UL, RPM4 beeps
	intermittently. In negative gauge measurement mode, there is also a user settable lower limit.
User Level	Levels of security that can be set to protect certain RPM4 functions from being accessed.
QDUT	On-board automated test sequence that AutoRanges RPM4 based on characteristics of
	the Device Under Test (DUT).

© 2004-2007 DH Instruments, a Fluke Company Page 140