Condec UPC5010 - Manual (Page 5)

2 UPC5000/UPC5010 Operation & Maintenance Manual
• Calibration Integrity: Once calibrated, the tamper-proof design provides numerous safeguards that
guarantee the integrity of pressure readings obtained. The LED provides the operator with status
information during both operation and calibration.
• Pressure Source: An internal supply cylinder with a volume of 7.0 std. cu. ft. of N
2
provides up to 2216
PSIG of pressure for calibration and test. A check valve quick disconnect fitting provides re-charging
capability.
• Simple Operation: All controls, indicators and pressure ports are accessible from the front panel. Section 2
provides clear, concise instructions for system operation.
• Data Input Capability: A front panel-mounted connector and selector switch permit the 4-20 mA current
signal from the gage-under-test or voltage to be displayed. Transducer excitation voltage of 18 VDC can be
provided standard, or by special order 28 VDC.
• Safe, Clean Operation: All pressure components are made of brass, copper, aluminum or stainless steel and
proof-tested to at least 150% of maximum operating pressure. In addition, the system contains a
high-pressure burst disk and relief valves to protect both the operator and system components from harm in
the event of over-pressurization. An all stainless steel version is available by special order.
The heart of this calibration system is a highly stable and repeatable pressure transducer. These sensors produce
an electrical output signal which is linearly proportional to the applied pressure.
By combining these sensors with microprocessor-based circuitry, an even higher degree of operational accuracy
and precision has been accomplished. For example, computer-generated correction curves for both the
non-linearity and the hysteresis of the sensors improve these characteristics by an order of magnitude or more. In
addition, a self-check feature ensures long-term accuracy by utilizing the computer to generate and control an
internal shunt calibration mode of operation. The indicators full-scale reading is compared against, and if
necessary, corrected to the digitally-stored value for full scale obtained at the time of initial pressure calibration.
The computer is programmed with a series of internal self-diagnostic routines that continually monitor and check
every bit of data stored and processed by this system. The system either notes or shuts down operation in the
event of an out-of-tolerance reading or outright failure.
The UPC5000 has an internal, rechargeable 12 volt lead acid battery, that provides a minimum of six hours of
complete portability when fully charged. An ON/OFF and battery test switch is provided to conserve energy
when the instrument is not in use and to provide the operator with battery voltage status during use. It also has a
LO BATT indicator on display.
The following schematic provides an overview of the UPC5000/UPC5010’s function.
Figure 1-1. UPC5000/UPC5010 Flow Diagram
VALVE
CHECK
MONITOR
PRESSURE LIMIT
RELIEF
VALVE
2216 PSI MAX.
N FILL PORT 2
+ or - 50 PSI
3000 PSI
BURST DISK
2216 PSI MAX.
N SUPPLY
INTERNAL
CONTROL
PRESSURE LIMIT
2
SUPPLY PRESSURE
FILTER
10u
0-3000 PSI
MICROPROCESSOR-BASED
DIGITAL INDICATOR
TRANSDUCER
VENT
VENT/VACUUM
PORT
(QUICK DISCONNECT)
PRESSURE
INCREASE
VERNIER
TEST PORT 20u
FILTER
ADJUST