The Beta MasterCAL 990 is a precision, multi-function, documenting calibrator that will calibrate
virtually any process instrument you have – thermocouples, RTDs, Ohms, Voltage, current, pressure,
and frequency. The MasterCAL 990 calibrator offers a host of convenience features including source
ramp functions, loop power, variable density data logging with a week's worth of calibration results
storage, compatibility with many third-party calibration documentation software programs, and a
built-in HART configuration / communicator. These features make the MasterCAL 990 multi-function
calibrator an indispensable tool.
The Beta MasterCAL 990 calibrator's large, white backlit LCD provides simultaneous display of input
and output. Menu-driven, "soft" function keys provide rapid setup and measurement. The
multilingual interface ensures the MasterCAL 990 is useful in as broad a range of applications and
locations as possible. A high capacity rechargeable battery pack provides extended usage of this
multi-function calibrator. An optional battery eliminator is available for extended monitoring
applications. The MasterCAL 990 is housed in an over-molded urethane case that provides a solid
grip and protection against "hard knocks".
Source/Simulation and Measurement/Read
The MasterCAL 990 multi-function calibrator will source/simulate thermocouple, RTD, Ohms, DC
Voltage and current, and frequency. Auto-step and ramp functions are provided on all outputs and
ranges.
Calibrators from the Beta MasterCAL 990 Series will measure/read thermocouple, RTD, Ohms, DC
and AC Voltage, DC current, pressure, and frequency. Measuring pressure requires the use of the
Beta Pressure Module Adapter (Model BPPA100) with any of
Beta's Pressure Modules
(please refer to the separate Pressure Module data sheet for ranges and accuracies).
Using a split-screen display mode, the MasterCAL 990 calibrator will simultaneously measure and
source various process variables. These variables depend on whether loop power is enabled or
disabled.
Switch Test Mode and Transmitter Mode
Process limit switches can be tested for both upper and lower trip limits and deadband. Using a
split-screen measure / source mode, the MasterCAL 990 calibrator accepts a normal process variable
measurement associated with the limit switch and the switch contacts. The MasterCAL 990 will
automatically monitor and record the measurement as the switch is activated and then deactivated.
A graphical plot of deadband is displayed, making switch test quick and accurate.
The MasterCAL 990 multi-function calibrator can be inserted in a 4-20 mA process loop to simulate
a 2-wire transmitter. The calibrator provides the loop excitation and modulates the loop current,
simulating the 2-wire transmitter.
Built-In Calculator Functions
The MasterCAL 990 features a built-in calculator with square-root function. Accessible registers
contain measure values and source values.
Barcode Entry Option
Multi-function calibrators from the MasterCAL 990 Series will accept input from an optional barcode
wand for rapid entry of instrument serial numbers.
HART Implementation
The Beta MasterCAL 990 supports HART Version 5.7 protocol instructions. Its functions are
comparable to a HART 275 Communicator; because the MasterCAL 990 does not have a DD
interpreter, it does not support DD libraries. Most instrument maintenance functions can be
accomplished using just the MasterCAL 990 without the need for a separate HART communicator.
Hookup is simple with the supplied HART interface cable. The calibrator menus automatically branch
to appropriate adjustment choices. Automatic completion of test templates and automatic fetching
and sending of analog readings during trim operations make HART calibration a highly efficient
operation.
Protocol Instructions
The MasterCAL 990 instruction set includes three levels of commands.
-
Universal Commands provides functions for all field instruments to read manufacturer and
device type, primary variable/input signal (PV), read output, tag ID, etc.
-
Common Practice Commands provides functions that are common to most field instruments,
such as reading multiple variables, setting damping features, etc.
-
Device-Specific Commands allows the MasterCAL 990 to perform device-specific configuration
functions for a wide variety of popular field instruments.
Operating Modes
The MasterCAL 990 universal documenting calibrator supports HART Point-to-Point Operation,
where a single HART instrument is connected in a loop; the calibrator is normally connected directly
at the instrument's local signal terminals. The MasterCAL 990 is also compatible with multi-drop
and burst mode HART installations.
Documenting Calibration
The MasterCAL 990 calibrator is compatible with many third-party calibration documentation
software programs including:
- Applied Systems Technologies Cal Station and Base Station
- Emerson Process Management AMS
- Prime Technologies ProCal
- Fluke DPC Track
- Honeywell DocuMint
- Others supporting the ISA Field Calibrator Interface standard
