Martel Electronics Beta MasterCal 990 Data sheet
Technical Specifications Bulletin
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General Features
• Precision multi-function calibrator and
HART™ configurator/communicator in one
hand-held instrument
• Measure/read thermocouple, RTD, Ohms,
DC and AC Voltage, DC current, pressure,
and frequency
• Source/simulate thermocouple, RTD, Ohms,
DC Voltage and current, pressure, and
frequency
• Simultaneous input and output split-screen
displays
• Loop power function
• Switch testing functions
• Transmitter mode
• Automated and user-programmable procedures
• Engineering units, percent of scale, square-
law inputs, or custom units
• Multi-lingual interface – English, French,
German, Italian, and Spanish
• 200x240 pixel, bright white, backlit LCD
display
• Rugged over-molded urethane case for field
use
• Calibration automation and documentation
with many popular third-party software
packages
• Complies with CAN/CSA C22.2 No 1010.1-92,
ANSI/ISA S82.01-1994, UL3111, and EN6101:1993
HART Protocol Features
• Universal, common practice and device-
specific commands
• Point-to-point and multi-drop operation
• Burst mode compatibility
• Read HART PV in digital mode
• Read and write HART configuration func-
tions
• Read and clone transmitter configuration
• Re-tag smart transmitters
• Automated HART sensor and output trim
The MasterCAL 990 - A Precision
Multi-Function Documenting
Calibrator
First and foremost, the 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. 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, make the
MasterCAL 990 an indispensable tool.
A 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. 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
The MasterCAL 990 will source/simulate
thermocouple, RTD, Ohms, DC Voltage and
current, and frequency. Auto-step and ramp
functions are provided on all outputs and
ranges.
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Measurement/Read
The MasterCAL 990 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).
Switch Test 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 accepts a normal process
variable measurement associated with the
limit switch, and the switch contacts. The 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.
Built-In Calculator Functions
The MasterCAL 990 features a built-in
calculator with square-root function, with
accessible registers containing measure and
source values.
Barcode Entry Option
The MasterCAL 990 will accept input from an
optional barcode wand for rapid entry of
instrument serial numbers.
Simultaneous Measure/Source
Using a split-screen display mode,
the MasterCAL 990 will
simultaneously measure and source
various process variables. These
variables depend on whether loop
power is enabled or disabled. Please
refer to Table 1.
Transmitter Mode
The MasterCAL 990 can be inserted
in a 4-20 mA process loop to simulate
a 2-wire transmitter. The MasterCAL
990 provides the loop excitation and
modulates the loop current,
simulating the 2-wire transmitter.
Table 1 – Simultaneous Measure/Source
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The MasterCAL 990 - A HART Configurator/Communicator
HART Implementation
The MasterCAL 990 supports HART Version
5.7 protocol instructions. It’s 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.
Operating Modes
The MasterCAL 990 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 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
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. Please refer to
Table 2.
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