High-End Pressure Controller
CPC8000
Operating Instructions - CPC8000
21
4.6 Transducer Choices
Transducer measuring modes can be gauge, absolute, or bi-directional. The CPC8000 will be equipped
with one, two or three transducers of the same mode. Transducer type will be “Standard” (uncertainty
of 0.03% FS, 0.01% FS, or 0.01% IS-50) or “Premium” (uncertainty of 0.008% IS-33, or 0.008% IS-50).
The transducers must be all “Standard” sensors or all “Premium” sensors and not a mix of both
types. The three sensors, in combination with NVR Module, provide a wide dynamic range (10:1 FS)
where the operator can choose to control output pressure using a single sensor, or “autorange” control
across all three sensors. The three sensor ranges can be chosen to optimize uncertainty levels. Full
scale sensor ranges up to 6000 psi are available plus an optional barometric sensor. The uncertainty
specifcations, plus a proprietary needle valve regulator, provides accurate and stable control.
The number of unique readings/sec over the remote interface is dependent on the sensor type. The
sensor update rate of a standard sensor is 30ms, or 33 unique readings/sec. The sensor update rate of a
premium sensor is 100ms, or 10 unique readings/sec. This is a technical limitation of the premium sensor
required to meet performance specifcations. All remote protocols can query faster than the sensor
update rate.
An optional precision barometer can be used for emulation of gauge pressure with an absolute pressure
instrument, or used for absolute pressure emulation with a gauge pressure instrument. For full range
absolute emulation, the instrument gauge sensors should be ranged down to -15 psig.
Table 4.6 - Transducer Choices
Transducer 1
CPR8000 Standard Sensor
0.01% full scale or 0.01% IS-50
CPR8800 Premium Sensor
0.008% IS-
33
or 0.008% IS-50
Transducer 2
No second reference sensor
CPR8000 Standard Sensor
0.01% full scale or 0.01% IS-50
CPR8800 Premium Sensor
0.008% IS-
33
or 0.008% IS-50
Transducer 3
No third reference sensor
CPR8000 Standard Sensor
0.01% full scale or 0.01% IS-50
CPR8800 Premium Sensor
0.008% IS-
33
or 0.008% IS-50
Summary of Contents for CPC8000
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