Detailed Product Description

MODELWISE DESCRIPTIONS:

PRODUCT DESCRIPTION:

Libratherm offers Microprocessor based Humidity and Temperature Controller Model HTC-3003, which has same features as the Model HTC-3000, except that it has 3 digit display for simultaneous indication of  both temperature and %RH value.

The controller accepts input from the standard(Pt-100) temperature sensor and from the capacitive type RH sensor or temperature/humidity transmitter. The process values and set values  are displayed simultaneously in the range 0.0-99.90^oC and  0.0 99.90% RH respectively on 4independent  3 digit 7-segment Red LED displays,

Since the controllers are basically designed for the stability chambers, the accurate control of temperature and humidity is achieved by operating the air heater and the boiler heater in the PID control action. and the compressor is operated in ON/OFF action with time delay facility. Since the compressors are not required to be ON at certain level of temperature, the user selectable mode is provided to program the compressor operation in AUTO, Continuous ON or Continuous OFF mode. To de-humidify the system, an extra ON/OFF output can also be optionally provided. The control output are in the form of SSR drivers of (0 10) VDC pulse to control the Air heater, boiler heater and compressor, dehumidifier.

In addition to this the instrument has many other useful features such as 4 digit display to indicate Real time clock / calendar. In-built storage facility, which can be retrieved on demand or can be down loaded on to a computer or on a printer for hard copy via the provided printer port. The storage capacity depends on the logging time. MAX. 480 records can be stored which can be printed in OFF line mode. For larger storage, additional memory card increases the capacity up to 3000records.

The controllers are ready with the serial communication port RS 232 / RS 485 for interfacing to the computer for data logging and storage.

Specially designed window based E-Chamber Software does the on line data logging and plot the online / offline graph on the PC and also allows user to enter the set points and control parameters through PC and the controller. (i.e. bi-directional communication). Two level Pass Word protected(operator & supervisory) for unauthorized alteration of the set parameters and stored data is also provided.

TECHNICAL SPECIFICATIONS: