Kipp & Zonen RaZON+, Instruction Manual

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3.11 Levelling
Prior to activating the RaZON
+
, it must be levelled on its mounting surface. To help accomplish this task, the RaZON
+
is equipped with
a high accuracy bubble on top of the housing. Adjust the levelling feet on the tripod stand or the tilting bolts in the pole mount to
move the bubble into the centre of the level. The levelling feet can be easily adjusted using a 3.5 mm Allen key, the tilting bolts of the
pole mount need a 5 mm Allen Key. The accuracy of the RaZON
+
is within 0.1° when the bubble is at least half within the circle.
When a different pyranometer like SMP10 with its own bubble level is mounted it is advised to use the RaZON
+
’s bubble level and not
the level of the pyranometer.
Because the pyranometer on the RaZON
+
measures only diffuse the accuracy of levelling has much less effect than for direct
measurement.
Rotating the RaZON
+
on its tripod is possible before the 3 M8 bolts are placed. The bubble level will move when the tracker is rotated
180 degrees. We recommend adjusting the levelling (feet) in such a way that the average bubble position is in the middle.
3.12 DC power source selection
An optional waterproof AC/DC power supply (50 W) and Modbus® Junction box is available to power the RaZON
+
and some additional
sensors.
If the RaZON
+
is powered using a DC power supply connected to the Mains, it must be properly grounded to Protective Ground using
a wire diameter equal to the mains power supply wiring of the applied DC power supply. This condition will in general be fulfilled if a
DC installation cable of 3x 1.5 m
2
is selected.
If powered via an AC/DC power supply an external switch or circuit breaker is required in the AC line with a switching capacity ≥ 1A.
If the RaZON
+
is powered using a (24 V) battery the power consumption is 13 W. DC batteries can have very high short circuit currents,
therefore adequate fusing ≤ 4A is required.
Internally the RaZON
+
power inputs are fused with two 4 A slow blow fuses.
Tip