Connect-Tek Transa PRO 17 Manual de Instruções descarregar pdf (Página 58)

5–11 RS-232

Suppose a chemical experiment is performed in a laboratory

and an engineer wants to find the relationship between the chem-

ical reaction and temperature. He uses a TEC-9300 to control the

temperature of the solution being tested. He is particularly inter-

ested in generating a test report containing the relationship

between the concentration and temperature.

For a single unit application, it is adequate to order a TEC-

9300 with RS-232 communication and BC-Net software. Using

the BC-Net software, the temperature data can be viewed and

stored in a file. The user can program the temperature as well as

other control parameters such as PID values. He can set up the

controller, download a ramp and soak profile, execute manual

control or auto-tuning procedure, etc. The results can be printed

out or stored in a file for future reference.

Refer to section 2-16 for installation and section 4-8 for setup

procedure.

5–12 Retransmit

An air-conditioned room uses two TEC-9300 units to control

the temperature and humidity. The temperature and humidity

must be recorded on a chart recorder. The preferred ranges for

these two parameters are: 20°C to 30°C and 40% RH to 60% RH.

The recorder inputs accept a 0–5V signal.

To achieve this, set the following parameters in the setup menu.

UNIT 1: UNIT 2:

FUNC=FULL FUNC=FULL

COM=0–5V COMM=0–5V

AOFN=PV1 AOFN=PV1

AOLO=20.0 (°C) AOLO=40.0 (%)

AOHI=30.0 (°C) AOHI=60.0 (%)

IN1=PTDN IN1=0–1V (according to humidity sensor)

IN1U=°C IN1U=PU

DP1=1-DP DP1=1-DP

SP1L and SP1H are used to limit the

adjustment range of the set point.

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Connect-Tek Transa PRO 17 Manual de Instruções Página 58