Tecfluid XT5 Uživatelský manuál stáhnout pdf (Strana 19)

9 TECHNICAL CHARACTERISTICS

9.1 Power supply

230, 240, 115, 24 VAC 50, 60 Hz . 24 VDC.

Power consumption: ≤ 5 VA

9.2 Analog output

4-20 mA. Active or passive. Galvanically isolated from the power supply.

9.3 Pulse output

Opto-isolated. Vmax: 30 VDC. Imax: 30 mA.

Maximum frequency in mode “P/U” : 6.25 Hz

Maximum frequency in mode “Hz” : 10 000 Hz

Minimum frequency in mode “Hz” : 0.04 Hz

Optional: Vmax: 240VAC / 350 VDC. Imax: 100 mA

Maximum frequency in mode “P/U” : 6.25 Hz

Maximum frequency in mode “Hz” : 75 Hz

9.4 Totalizer

Nº of digits: 7 (2 decimals)**

Digit size: 8 mm

Reset: By means of key

9.5 Flow rate indication

Nº of digits: 4 (up to 2 decimals configurable)**

Digit size: 5 mm

** When the available digits are full and the integers overflow a decimal is automatically

lost.

9.6 General characteristics

Protection rating: IP67

Ambient temperature range: 0 ... +60 ºC

9.7 Electrical characteristics referred to the analog loop and communications

Reception impedance:

Rx > 8,5 MΩ

Cx < 200 pF

This equipment complies with the following EEC directives:

Low voltage (73/23/CEE)

Electromagnetic compatibility (89/336/CEE)

In this case, applying the formula, the maximum frequency at the output is:

As the value exceeds 6.25 Hz, this factor can not be applied.

In this case there would be 2 solutions:

1. To change the factor to 1 pulse per litre, becoming the maximum frequency 100 times

smaller, fmax = 2.639 Hz.

2. To change the units of volume to m3. With this, the maximum flow rate is divided by

1000 and therefore the maximum frequency becomes fmax = 0.2639 Hz.

Hz 263.91002.639f

max

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