Multi-Function (다기능교정기)
MasterCal 990
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
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