January 2014 - TD 302 Operating Manual for Pressure 4117/4117R Tide 5217/5217R, Wave & Tide 5218/5218RPage 25
3.3
Wave and Tide sensor 5218/5218R
The sensor current drain depends on the sampling interval (Fs), the output interval (S), the number of samples
for wave calculations (N), and the tidal averaging period (T), refer to
for current drain in each mode.
Note!
If
Enable Wave
and
Enable Tide
are
No
but
Enable Tide
is
YES
(Wave and Tide output parameter are disabled),
then the sensor power consumption is similar to the power consumption of the Pressure sensor 4117/4117R,
refer chapter 3.1
If
Enable Wave
is
No
(Wave output parameters are disabled), then the sensor power consumption is similar to
the power consumption of the Tide Sensor, refer chapter 3.2
IMPORTANT! If both
Enable Wave
and
Enable Tide
are Yes (both Wave and Tide output parameter are
enabled), then the correct power consumption will be the greater of the consumption given in Table 3-2 and
Table 3-3 Power consumption of the Wave Sensor 5218/5218R when
Enable Wave
is
Yes, Enable Tide
is
No
, and the assumptions stated in the beginning of Chapter 3 are true. If both Wave and Tide output
parameters are enabled, the correct power consumption will be the greater of the consumption given in
Table 3-2 and Table 3-3.
Operation Mode
Current drain@9V
N/(Fs*S)
≤
1
N/(Fs*S)
> 1
AiCaP
0.4 mA + (2.2*N/S) mA
Fs = 2 Hz:
4.65 mA + (6.5/S) mA
Fs = 4 Hz:
9.2 mA + (5.0/S) mA
RS-232
0.4 mA + (2.5*N/S) mA
Fs = 2 Hz:
5.5 mA + (28/S) mA
Fs = 4 Hz:
10 mA + (28/S) mA
RS-422
1.1 mA + (2.4*N/S) mA
Fs = 2 Hz:
5.5 mA + (28/S) mA
Fs = 4 Hz:
10 mA + (28/S) mA
