DH Instruments ADCS-601, Руководство по эксплуатации и обслуживанию

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ADCS-601™ OPERATION AND MAINTENANCE MANUAL
© 2005 DH Instruments, Inc. Page 160
9.2 GLOSSARY
Absolute
As in absolute pressure. Pressure expressed relative to vacuum.
Absolute by vacuum,
avac Absolute pressure determined by defining pressure relative to vacuum in an evacuated bell jar
(PG7601).
ADCS Tools ADCS-601 software that controls the overall system. ADCS Tools is run on a personal
computer that interfaces with the components of the ADCS-601 system.
Adder A value added to sensor readings to offset the readings (pressure adder, temperature adder,
humidity adder, vacuum adder) for calibration adjustment.
Ae
Piston-cylinder effective area.
AMH Automated mass handling system. ADCS-601 uses an AMH-38 on the PG7601 piston gauge.
Control Cabinet Main ADCS-601 system component. 19 in. rack mount enclosure in which the pressure
controllers, pressure monitor and Gas Supply Panel are installed.
DUT (Device Under
Test) The device being tested or calibrated.
FS (Full Scale) The full scale value is the maximum value or the span of a measurement range. Limits and
specifications are often expressed as % FS.
g, gl Acceleration due to gravity (g). Acceleration due to gravity at location of use (gl).
Gauge As in gauge pressure. Pressure expressed relative to atmospheric pressure.
Head Fluid head, a pressure difference due to a difference in height.
HSTOP, LSTOP
PG7601 high stop and low stop, piston maximum end of stroke positions.
Measurement Mode
Mode in which ADCS-601 is defining pressures. These include gauge (pressure relative to
atmospheric pressure) and absolute (pressure relative to vacuum).
MS (Mass Set)
A group of masses used on the PG7601 piston gauge. In ADCS-601 the mass set is a an AMH-
38 mass set with a nominal total mass of 38 kg.
Mass Bell The combination of parts that is loaded onto the piston to carry the masses. This includes the
sleeve that is slid over the piston, the binary mass tray and the lifting shaft..
Medium, pressurized The pressurized fluid.
Multiplier A value by which internal sensor readings are multiplied to change their slope (pressure multiplier,
temperature multiplier, humidity multiplier, vacuum multiplier) for calibration adjustment.
N2 Nitrogen gas.
Nominal Mass The mass loaded on the piston in terms of the nominal values written on the individual masses.
See also True Mass.
P-C Piston-cylinder, piston-cylinder module.
PRT Platinum Resistance Thermometer. The element used in the piston-cylinder mounting post to
measure temperature.
Ready/Not Ready Indication of when conditions are present to make in tolerance pressure definitions based on
specific criteria for each condition.
Reference Bench Main ADCS-601 system component. Wood top bench onto which the system pressure stands
are installed.
Reference Level
Height at which pressures are defined. PG7000 defines pressures at its reference level. Fluid head
corrections correct the pressure relative to the reference level.
Reference Pressure,
Reference Pressure
Circuit
The pressure against which pressures are defined by the ADCS-601 system. Vacuum in
absolute measurement mode; atmosphere in gauge measurement mode.
TEST(+)
Port to which the ADCS-601 system sets absolute or gauge pressure.
TEST(-)
Port connected to the reference circuit of the ADCS-601 pressure standards. In gauge mode,
the DUT “low side” can be connected here to assure a common atmospheric reference on the
DUT and the pressure standards. Port not used in absolute mode.
True Mass
The actual mass loaded on the piston using the measured value of each mass. See also
Nominal Mass.