Tecfluid XT5 - Manual (Page 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.
19
Hz 263.9 100 2.639 f
max
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