Campbell Scientific CS135 Lidar Ceilometer - Manual (Page 14)

CS135 Ceilometer
6
2.4 Specifications
2.4.1 Measurement Specifications
Maximum Reporting Range: 10 km / 32,800 ft
Minimum Reporting Resolution: 5 m / 15 ft
Hard Target Range Accuracy: +/- 0.25% +/- 4.6 m
Reporting Cycle: 2 to 120s
Cloud Layers Reported: Up to four layers reported, user selectable
2.4.2 Mechanical Specifications
Height: 1000 mm
Width: 330 mm
Depth: 316 mm
Total weight: 33 kg (excluding cables)
Packed weight: 58 kg
2.4.3 Electrical Specifications
Power required: Nominal 115 (106-137) or nominal 230 (216-253) VAC,
47-63 Hz, 470 W maximum in total.
The hood heater requires a maximum of 270 W.
The internal heater requires a maximum of 120 W.
The supply voltage required is specified at the time of order. If it has to be
changed later please contact Campbell Scientific for advice.
Fuses: The power supply contains two fuses as follows:
AUX fuse HBC 5 A (T)
PSU fuse
HBC 500mA (T)
All fuses are 5 x 20 mm slow blow (T) and are the same for both 115 VAC and
230 VAC.
Battery: Internal 12V 2Ah battery provides 1hr measurement without the
blower/heater. The power supply is equipped with a system to prevent deep
discharge of the battery.
The CS135 uses Positive Temperature Coefficient (PTC) heaters within its design.
These heaters are self-regulating, simplifying the internal design of the sensor and
improving safety. Due to the nature of these devices the CS135 takes a higher
current during start up.
The CS135 will take up to 1 KW for the first few seconds of operation dropping
off quickly to its normal operating power over a period of a minute.
In cold environments the power consumption of the CS135 may be as high as
470 W. Also, in warmer environments it may be as low as 200 W.
The heaters within the CS135 are purely resistive which will prove advantageous
when connected to generators or when the power factor of your supply is
important.