Precipitation Transmitter

General Information

This instrument is designed to measure precipitation striking the surface of the earth. The precipitation strikes a collector with a surface area of 200 cm² and then travels via a run-in sieve into a tipping scale. When a certain amount of water has gathered, the scale tips and empties, while the other half of the scale is ready to receive water again. This tipping procedure is detected by a reed switch and is made available as a pulse for an electrical Signal.

The signal is prepared and emitted on the digital output (optocoupler) as a pulse. Simultaneously the input signal is converted in an analog value change and made available on the analog output as a current or voltage value. (See Models Available) The amount of the analog value change depends on the measuring range selected. There are different measuring ranges available (see Selection of Measuring Range). Selection is made by means of a DIP switch and thus can be adjusted by the user to the local conditions. The analog output is set automatically to the initial value (for example 0V..., 4mA..., 0mA...) when the measuring range transmission value has been reached.

Resetting the analog output to the initial value can also be done with a RESET-impulse on the reset-input (at any time). The Precipitation Transmitter is equipped with an electronically regulated heater for winter operation.

Models Available
 

Order - No	Power supply	Output/analog	Measuring range
5.4033.30.040		0 ... 20 mA (max. 500 O )	0 ... 10 mm
5.4033.30.041	24 V	4 ... 20 mA (max. 500 O )	0 ... 20 mm
5.4033.30.061	AC/DC	0 ... 10V	0 ... 25 mm
5.4033.31.040	10 ... 18 V DC	0 ... 20 mA (max. 500/300 W)	0 ... 50 mm
5.4033.31.041		4 ... 20 mA (max. 500/300 W)	with DIP - Switch
5.4033.31.061	14 ... 18 V DC	0 ... 10 V	adjustable

The factory setting for the measuring range is 0 ... 10 mm.
 

Technical Data
 

Order No.	5.4033.30.xxx	5.4033.31.xxx
Heating	yes	no
Switch-on temperature	ca. 5°C	--------
Hysterese	ca. 2°C	--------
Heating power	70W (24V)	--------
Ambient temperature	-25°C ... + 50°C	0 ... + 60°C
Measuring system	Tipping bucket
Resolution	0.1 mm
max. Intensity	7 mm/Minutes
analog Measuring range	adjustable ( DIP Switch)
Measuring range 1	0 ... 10 mm Precipitation
Measuring range 2	0 ... 25 mm Precipitation
Resolution	0.1 mm
Measuring range 3	0 ... 20 mm Precipitation
Measuring range 4	0 ... 50 mm Precipitation
Resolution	0.2 mm
analog registration	with automatic overflow
	with external reset
Reset input	Optocoupler
Input voltage	5 ... 30 V
Pulse	³ 20 msec
Measured value output
1. Digital
Optocoupler	1 Pulse/Tipping bucket
Pulse length	>= 100 msec
U (max.)	30 V
2. Analog
Voltage output	0 ... 10 V (corresponds to...s. Measuring range)
Current output	0 ... 20 mA (corresponds to s. Measuring range)
	4 ... 20 mA
Non linearity	± 0,2 % (-30°C ... 60°C)
Offset error	< 0,3 % (-30°C ... 60°C)
load	500 W Power supply 24 V AC/DC
	300 W Power supply 10 ... 14 V DC
Power supply	1. 24 V AC/DC (±15%)
	2. 10 ... 18 V DC
Power consumption	approx. 20 mA (without heating)

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