Section 1 Introduction.1; General Description; Features; Available Models - Omega Engineering CL521 Operator's Manual

SECTION 1 INTRODUCTION
1.1 GENERAL DESCRIPTION
The OMEGA CL521 is a precision, high-accuracy calibrator for use on the bench or in
the field. Featuring exceptionally high accuracy, the CL521 can measure any of ten
thermocouple types, platinum RTDs, millivolts, or ohms. The CL521 is also an
instrument calibrator, allowing users to calibrate or check the above sensor type
instrumentation.
The CL521 is designed for ease of use, with a large, easy-to-read LCD display with
0.41" (10.4 mm) digits. A touch-sensitive keypad makes function selection and value
entry fast and easy, while a toggle switch simplifies selection between measurement and
calibration functions. The CL521 can store up to six values for quick selection of
common calibration temperatures, as well as store six measurement readings. Other
features include rate of change calculation, min and max storage, and differential
measurement from a stored value.
The CL521D has all the features of the CL521 with the addition of RS-232C two-way
communications and an analog output. The RS-232C communications can be used for
remote computer control of the unit, as well as for transmitting data to a computer, printer
or datalogger. The analog output is a 1 mV per degree signal, with 10x amplification
when using the differential function of the CL521D.
Each unit is supplied complete with carrying case, connector leads, type K thermocouple
extension cable with male connector, calibration certificate, TAS-U-5 connector, and AC
power adapter.
1.2 FEATURES
• Calibrate and Measure J, K, T, E, R, S, B and N Thermocouples
• Measure 100 ohm Ft RTDs
• Math Functions Calculate Rate of Change and Difference
• Min/Max Storage
• Store up to Six Simulations for Quick Recall
• Enter Calibration Values Directly from Keypad or Through Up/Down
Increment Keys
• Available with Optional RS-232C and Analog Output
1.3 AVAILABLE MODELS
MODEL NUMBER DESCRIPTION
CL521
CL521D
CL521-RS232C
CL521-MA
Temperature calibrator/indicator
Calibrator with RS-232C and analog output
RS-232 interface board (includes software)
Milliamp board with 24 Vdc supply
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