Pressure Calibrators for Low-, Medium- and High Pressure
Pressure
Calibrators for Low-, Medium- and High Pressure
These
Pressure Calibrators from KELLER are very precise calibration
instruments for the calibration of pressure transmitters,
pressure switches and pressure gauges.
The Low- and Medium ranges are pneumatic, and the High ranges
are hydraulic. The portable housing incorporates the pressure
generating pump, a high precision reference sensor and the
measuring electronics.
The transmitter under test is connected to the pressure port of
the calibrator and the signal is read out directly on the
display. Various internal functions and performance features
assist the user in many different measuring tasks. In addition,
the serial interface allows the transfer of the measured data
onto a PC for further processing. The calibrator, including
accessories, is supplied with a robust carrying case and is
ideal for outdoor, on-site use.
To meet differing requirements, two basic versions of the
calibrator are offered:
Full-Version
The Full-Version of the calibrator is a complete, self-contained
transmitter testing unit. With internal supplies for the
transmitter and the calibrator itself, the self-contained
instrument is always ready for use. For a variety of measuring
and testing tasks, a wide selection of software functions are
incorporated:
MANO
displays the pressure and the maximum and minimum pressures
MANO
(with
transmitter connected)
displays the pressure, the transmitter signal and the
temperature
HOLD
freezes the actual measured values on the display
TARA
sets the pressure display to zero (volatile)
UNIT
scales the display into different pressure units (bar, PSI, kPa...)
LEAK
determines the pressure decrease (or increase) over a pre-set
time period
REC
records the measured values (the number of values and the
interval are programmable)
RESO
reduces or increases the resolution
ZERO
sets the pressure display to zero (permanently)
PST
records the switching points of pressure switches
LIN
calculates the linearity error of the test transmitter
Standard-Version
The Standard-Version is limited to the essential features for
precision pressure generation only. For this simplified
operation, this version does not include the integral
transmitter supply, nor the display of the transmitter signal.
Thus it does not incorporate the PST and LIN functions.
