Abus-technologies ATxBlock Temperature Transmitter Manual de usuario descargar pdf (Pagina 4)

ABUS TECHNOLOGIES INC.

ATxBlock

1. INTRODUCTION

The ATxBlock is a 2-wire in-head temperature transmitter, microprocessor

based designed for the flexibility of accepting mV, Pt100 and a variety of

thermocouples as the input sensor. The ATxBlock delivers a scalable linear 4-20mA or

0-10V output signal proportional to the sensor temperature. User-friendly configuration

software is provided for parameter setup, including sensor type, temperature range,

filter, etc.

2. PRESENTATION

Technical Parameters

Sensor input: User defined. The supported sensors are listed in table 6.2 ATxBlock

Input Sensors, along with their maximum ranges and minimum span.

Thermocouples: Types J, K, R, S, T, N, B and E, according to IEC 60584 (ITS-90).

Impedance >> 1 M

Pt100: Excitation: 180 A.

2 or 3-wire connection (for 2-wire sensors, tie terminals 2 and 3

together).

= 0.00385, according to IEC 60751(ITS-90).

Voltage: 0 ~ 50mV dc.

Impedance: 1 M

Total accuracy: Better than 0.25% of the maximum range for thermocouples and 0,15%

for Pt100 and voltage;

Response Time: < 100 ms;

Output: 2-wire 4-20 mA, linear with respect to the measured temperature.

Resolution: 0.004 mA (12 bits).

Power supply: 12 to 35 Vdc, across the transmitter;

Maximum load (RL): RL (max.)= (Vdc – 12) / 0,02 []

Where: Vdc= Power supply voltage

Operating Temperature: -40 to 85 °C

Humidity: 0 to 90% RH

Electromagnetic compatibility: EN 50081-2, EN 50082-2

Polarity inversion protection: Internal

No isolation

between the sensor and the 4-20mA loop.

Cold junction compensation for thermocouples.

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