2 GENERAL
FEATURES
2.1 Temperature
stability
The internal microcontroller system handles, through the keyboard, man-machine communications, the internal logic and
grants the stability of the internal thermal equalizing metal block of ±0.05 °C.
The temperature control uses a sophisticated PID algorithm with memory stored optimized tuning constants.
For special tests the operator could, through a security code, load different tuning constants.
2.2
Application flexibility
The operative mode set-up is made simple and easy with a sequence of menu pages that only requires
<F>
(Function),
<E>
(Enter),
<
▲
>
increase and
<
▼
>
decrease instructions.
The panel lamp and keys have the following features:
"HEATING"
LED
indicates the power applied to the oven
"COOLING"
LED
indicates cooling action through the modulated fan
"SWITCH TEST"
indicates thermostat switch-over
<F>
key for function selection
<
▲
>
and
<
▼
>
parameter
adjustment
<E>
Enter key for new instruction acknowledgement
The instrument will also provide some acoustic signals as it follows:
single "beep"
operator instruction acknowledgment when the
<E>
key is pressed
multiple "beep" (five times)
the temperature is stabilized on the set-point value and the instrument is ready for
the calibration of the sensor .
2.3
Internal digital indicator
The internal digital indicator is a dot matrix LCD display with 2 lines of 16 characters equipped with a backlight device for
easy reading also in poor light condition.
The operator could select the required operative function, the set-point value and read the temperature value of the
internal thermal equalizing block.
The temperature is obtained with a class A Pt100 resistance thermometer Pt 100.
The measurement limit of error is ± 0.3°C at 450°C.
The overall limit of error can be improved using an external high accuracy calibrated resistance thermometer that can be
supplied on request.
2.4 External
digital
indicator
When high accuracy is required, the portable temperature calibrator
CL551
can be used in combination with high
accuracy indicator and an external high accuracy calibrated resistance thermometer (ask for the pertinent literature).
2.5 Digital
interface
The calibrator is standard equipped with a full bi-directional RS232 digital interface for any communication with a
Personal Computer. The Portable Temperature Calibrator can be part of an automatic calibration system with a
programmable cycle and the acquisition of all data required to generate a full calibration report.
OMEGA engineers are ready to support you with components, accessories and software that can fulfil your application
requirements.
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