Lambrecht PreLOG User manual

1(15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
Features
PreLOG / PreLOG ECO
Memory for up to 65536 measured values•
Saves pulses / sums of precipitation with timestamp•
Resolution configurable (standard: 0.1 mm)•
Event-driven recording (no zero values)•
Integrated debouncing of the reed contact•
Intensity-dependent correction of precipitation sums•
Data retrieval via USB•
Real-time clock•
Power supply by rechargeable Li-ion battery for 3-5 years (depending on the precipitation intensity and without•
a modem)
Recharging of the battery via USB port•
Housing IP65 (plugged-in connector: IP67)•
PreLOG
Pulse output (not corrected, debounced)•
Optional external power supply e. g. via solar set•
RS232 interface for data retrieval and connection to a modem (optional)•
Optional data transmission via GPRS modem to a appropriate MeteoWare host with static IP address•
Event-driven alarm function via connectable modem•
Start / End Precipitation○
Exceeding of a defined max. amount of precipitation since the last retrieval / alarm○
Exceeding of a defined max. amount of precipitation as a moving sum over a defined time frame (with○
hysteresis)
Exceeding of a defined max. precipitation intensity (with hysteresis)○

2 (15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
Table of contents
1 Scope of Delivery p. 3
2 Order Codes p. 3
3 Safety Instructions and Warranty p. 3
4 Dimensional Drawings p. 4
6 Power and Signal Connection p. 6
7 Functions p. 9
7.1 Pulse Registration p. 9
7.2 Recording p. 9
7.3 Alarm / Event Message p. 9
7.4 Data Output p. 10
8.1 Recording p. 11
8.2 Event / Alarm p. 13
8.3 Data Transmission p. 14
8.3.1 Data Retrieval using PreLOG-Commander (USB) p. 16
8.3.2 Data Retrieval using PreLOG-Commander (GSM Mode) p. 16
8.3.3 Data Retrieval using MeteoWare Rain (USB) p. 16
8.3.4 Data Retrieval using MeteoWare Rain (GSM Mode) p. 17
8.3.5 Data Reception using MeteoWare Rain (GPRS Remote Send Mode) p. 17
8.3.6 Automated Data Reception and Monitoring of Measuring Net-
works using MeteoWare Rain full version p. 18
9 PreLOG-Commander p. 19
9.1 Initial Configuration of a PreLOG – Quickstart S.19
9.2 Setup p. 19
9.2.1 Setup - Select Current Station p. 19
9.2.2 Setup – PreLOG Configuration p. 20
9.2.3 Setup – Set PreLOG Clock p. 24
9.2.4 Setup - Modem Configuration p. 24
9.2.5 Setup – CSV Format Settings p. 24
9.3 Retrieval p. 24
9.3.1 Retrieval – Measured Values p. 24
9.3.2 Retrieval - PreLOG Status p. 25
9.4 Visualisation – Measured Data p. 25
9.5 Utilities p. 25
9.5.1 Utilities – Factory Reset p. 25
9.5.2 Utilities – PreLOG Reboot p. 26
9.5.3 Utilities – PreLOG Clear Flash Memory p. 26
9.5.4 Utilities – PreLOG Reset Total Precipitation Amount p. 26
9.5.5 Utilities – PreLOG Critical Error p. 26
9.5.6 Utilities – PreLOG Firmware Update p. 26
10 Inspection and Troubleshooting p. 26
10.1 Critical Error p. 26
10.2 GPRS Test Failed p. 27
10.3 Retrieval of PreLOG Configuration Failed p. 27
10.4 Transmission of PreLOG Configuration Failed p. 27
10.5 Exchanging the Rechargeable Battery p. 27
11 Maintenance and Repair p. 28
12 Equipment and Spare Parts p. 28
13 Space for Notes p. 29
14 Technical Data p. 30

3(15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
1 Scope of Delivery
PreLOG or PreLOG ECO•
Connecting cable with circular MiniUSB connector•
Connecting cable precipitation sensor (2-pole)•
USB to MiniUSB cable•
Cable connector•
Operating instructions•
Software PreLOG-Commander (country-depending on CD or as download)•
Software MeteoWare Rain (country-depending on CD or as download)•
Check the delivery for transport damages and document them extensively for following claims for damages against
the shipper. Afterwards contact the LAMBRECHT service department under [phone].
2 Order Codes
PreLOG Id-No. 00.15190.000000
PreLOG ECO Id-No. 00.15190.010000
3 Safety Instructions and Warranty
This system is designed according to the state-of-the-art accepted safety regulations. However, please note the
following rules:
Before setting into operation please read all respective manuals!1.
Please take notice of internal and state-specific guidelines and/or rules for the prevention of accidents (e. g.2.
the professional association). If necessary ask your responsible safety representative.
Use the system according to the manual’s regulations only.3.
Always have the manual at hand at the installation site.4.
Use the system in technically correct conditions only! You have to eliminate influences immediately, which5.
might impair security .
Prevent the ingress of unwanted liquids into the devices.6.
Please note the loss of warranty and non-liability by unauthorised manipulation of the system. You need
a written permission from the LAMBRECHT meteo GmbH for changes of system components. These
activities must be operated by a qualified technician.
The warranty does not cover:
Mechanical damages caused by external impacts (e. g. icefall, rockfall, vandalism).1.
Impacts or damages caused by over-voltages or electromagnetic fields which are beyond the standards and2.
specifications in the technical data.
Damages caused by improper handling, e. g. by wrong tools, incorrect installation, incorrect electrical3.
installation (incorrect polarity) etc.
Damages which are caused by using the device beyond the specified operation conditions.4.

4 (15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
4 Dimensional Drawings
PreLOG ECO
PreLOG
5 Mounting
You can mount the PreLOG directly to the LAMBRECHT precipitation sensor 15189. Therefore the precipitation
sensor is already delivered with the necessary bore or an appropriate 29 - 30 mm bore can be drilled.
PreLOG
15189
21
Ø29,00
Ø 29-30 mm
Fig. 01
Fig. 02
ca. 270,00 mm
Ø32,00
ca. 290,00 mm
Ø32,00

5
PreLOG
2
1
(15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
Another option is to mount the data logger to a mast with our special mast fixation from our traverse system Id.-No.
32.14627.001010 (See Fig. 03).
Fig. 03

6
PIN 5
PIN 4
ca. 1 m
Ø20 mm
Ø3.8 mm
brown/braun
black / schwarz
+ PULSE IN
GND (-)
yellow/gelb
black / schwarz
Connection cabel / Anschlusskabel USB cable / USB Kabel
8
7
6
4
3
1
2
5
+ PULSE IN
brown/braun
GND (-)
black / schwarz
PIN 4
PIN 5
+ PULSE IN
GND (-)
yellow/gelb
black / schwarz
(15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
6 Power and Signal Connection
The PreLOG is connected to the pulse output of the precipitation sensor with the supplied cable. We recommend
using the supplied cable connector. This cable connector ensures optimal protection (e.g. strain-relief) for the wire
with the USB circular plug-in connector (see Fig. 04).
(1) Trim the supplied cable to the desired length and remove the sheath on 2 cm.
(2) Use a straight cut to remove the shielding braid up to the edge of the sheath.
(3) Cut the not used strands (wire with USB circular plug-in connector) straightly to different lengths in steps
of approx. 2 mm.
(4) Conduct the screw connection on each cable end.
(5) The black strand of connection cable and the USB cable must be placed in the black slot of the particular
screw connection and the brown and yellow strand must be placed in the brown slot in each case.
(6) Cut the overlaying strands on 1-2 mm.
(7) Insert the screw connections into the proper intermediate part (matching the colors: dark-grey to dark-grey
and light-grey to light-grey). Pay attention to the corresponding guide lugs!
(8) Torque down the connections hand-tight until stop.
Fig. 04

7(15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
1
2
REED CONTACT DIRECT
REED CONTACT DIRECT
br/brn
sw/blk
+ PULSE IN
GND (-)
Connection to LAMBRECHT Precipitation Sensors
In combination with a LAMBRECHT precipitation sensor, the PreLOG is connected directly to the reed switch. As
the data logger has integrated pulse debouncing, therefore no further power supply for debouncing electronics in
the precipitation sensors is necessary.
Connection to 15189, 15188, 1518H3
Connection to 15189 ECO
Pin Assignment M12 Connector, 8-Pin (only PreLOG)
If the PreLOG should be read out via the RS232 interface, externally powered or connected to the GPRS solar
set, the following pin assignment of the 8-pin M12 connector is used (see Fig. 07 (pin side view)).
Pin Wire Color Function
1 White RS232 Input (R x D)
2 Brown RS232 Output (T x D)
3 Green Masse GND
4 Yellow Control Pin RS232 Communication ON (have to be on
Masse GND for ON)
5 Grey Masse GND
6 Pink + external power supply 9…26 V DC (Attention: This
voltage is used to supply the modem via the PreLOG.)
7 Blue Power Supply for Modem Output
8 Red Pulse Pin (Output of the input pulse) Fig. 07
12
3
4
5
6
78
1
2
3
4
5
6
REED CONTACT DIRECT
NC
NC
NC
NC
REED CONTACT DIRECT
br/brn
sw/blk
+ PULSE IN
GND (-)
Fig. 05
Fig. 06

8 (15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
Connecting RS232
In general the PreLOG RS232 interface is deactivated to save energy. It will only be activated by the PreLOG to
transmit data. For external access to the PreLOG via RS232 , e. g. to retrieve data or to configure the PreLOG,
the control pin “RS232-Communication ON” (4) has to be connected with the “Masse GND” pin (3) or (5) (see
Fig. 08).
Connecting Modem via RS232– GPRS (GPRS-Solar-Set)
If the PreLOG should only actively communicate via GPRS using a modem at the RS232 interface (e. g. of the
GPRS solar set), the control pin “RS232 Communication ON” (4) must not be connected to the “Masse GND”
pin. In this mode external communication with the PreLOG via the RS232 interface is not available. (In Fig. 09
the solar charge controller of the GPRS solar set is not shown!)
Connecting Modem via RS232 – GSM
If the PreLOG should always be accessible the control pin “RS232 Communication ON” (4) has to be connected
to the “Masse GND” pin. This operating mode needs the most energy since both, the RS232 interface and the
modem, are permanently activated (see Fig. 10).
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
RS232 RxD (IN)
RS232 TXD (OUT)
MASSE GND
RS232 COMMUNICATION ON
MASSE GND
EXT POWER SUPPLY 9...26V DC
7
8
MODEM SUPPLY OUT (+)
PULSE OUT
PRELOG M12-CONNECTOR
RS232 TxD
RS232 RxD
SIGNAL GND
Modem
1
2
3
4
5
6
RS232 RxD (IN)
RS232 TXD (OUT)
MASSE GND
RS232 COMMUNICATION ON
MASSE GND
EXT POWER SUPPLY 9...26V DC
7
8
MODEM SUPPLY OUT (+)
PULSE OUT
PRELOG M12-CONNECTOR
RS232 RxD
RS232 TxD
+12 V DC SUPPLY
GND SUPPLY
e.g.
ACCU 12 V
+ -
Modem
output
Modem
input
SIGNAL GND
Fig. 10
Modem
1
2
3
4
5
6
RS232 RxD (IN)
RS232 TXD (OUT)
MASSE GND
RS232 COMMUNICATION ON
MASSE GND
EXT POWER SUPPLY 9...26V DC
7
8
MODEM SUPPLY OUT (+)
PULSE OUT
PRELOG M12-CONNECTOR
RS232 RxD
RS232 TxD
+12 V DC SUPPLY
GND SUPPLY
12 V DC
POWER SUPPLY
+ -
Modem
output
Modem
input
SIGNAL GND
Fig. 09
Fig. 08

9(15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
7 Functions
7.1 Pulse Registration
Integrated debouncing of the pulse signal of a reed contact•
Integrated precipitation correction of the recorded pulses, respectively linearisation of the precipitation signal•
of LAMBRECHT precipitation sensors
Pulse output (OC, not galv. isolated) for uncorrected transmission of the input signal. At a resolution factor•
≥0.1* the length of the returned pulse is 125 ms. At a resolution factor < 0.1 the pulse length will be reduced
to 10 ms.
7.2 Recording
Recording of precipitation pulses with timestamp•
Recording of precipitation amount in selectable time intervals•
Recording of precipitation amount between retrievals•
Recording of precipitation amount since switch on of the device•
7.3 Alarm / Event Message
Event message at start of precipitation•
Event message at end of precipitation•
Event message at exceeding of a max. precipitation amount since last retrieval or message•
Event message at exceeding of a max. precipitation amount as moving sum of a specified period (with•
hysteresis)
Event message at exceeding of a max. precipitation intensity (with hysteresis)•
7.4 Data Output
Recorded measured values (no zero values)•
Data retrieval of the recorded values with timestamp to a CSV file or MeteoWare Rain database with the
programs:
PreLOG-Commander (USB / GSM-Mode)◦
MeteoWare Rain (USB / GSM- / GPRS-Mode)◦
Operating data•
Battery status (OK / charge)•
Flash memory status (in % available space)•
Name of the data logger / identification•
Firmware version•
Precipitation amount since switch on of the device•
Precipitation amount since last retrieval•
GPRS error code•
Position in the command sequence of the error causing command•
* A resolution factor 0.1 means 1 pulse = 0.1 mm (precipitation per m2)
+
+
SWITCH.INPUT
active LOW
Pull-Up
Ra=5kΩ...10kΩ
VCC= 3.3 … 40VDC
GND -
+
-
power
supply
Connecting pulse output - Open Collector
(OC)
The PreLOG comes with an Open Collector output which
can be used to forward the recorded pulses for example to
a programmable logic controller (PLC). See also „Pin As-
signment M12 Connector, 8-Pin“.
Remark: The PreLOG ECO has no OC output.
Fig. 11

10 (15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
8 Description of the Functions
Integrated Debouncing of the Reed Contact Pulse Signal
The PreLOG has an integrated debouncing attuned to the LAMBRECHT precipitation sensors (15189, 15188,
1518H3).
Therefore a maximum of 4 pulses per second is allowed at a resolution factor (precipitation amount corresponding
to an incoming pulse) ≥0.1. Then the min. distance between falling edges is 250 ms.
At a resolution factor < 0.1 the debouncing will be changed automatically and the min. closing time will be 10 ms
and the max. pulse frequency 50 Hz.
Linearisation of the Precipitation Signal - Precipitation Correction of the Recorded Pulses
Precipitation sensors using tipping buckets generally have an intensity-dependent error. The PreLOG has integrated
precipitation correction compatible with the LAMBRECHT precipitation sensors 15189, 15188 and 1518H3. With
activated correction the PreLOG records the corrected factor with the timestamp instead of the originally set
resolution factor (see “Recording of Precipitation Pulses With Timestamp”).
Without correction the pulses are recorded with the originally set factor and a timestamp.
Using the intensity correction in combination with precipitation sensors of other manufacturers may result in incor-
rect measured values. Therefore the intensity correction should be deactivated in such cases.
Since some LAMBRECHT precipitation sensors already have integrated intensity correction, the correction of the
PreLOG has to be deactivated if used with these sensors. Otherwise “double” correction would lead to incorrect
results.
Configuration
The precipitation correction can be activated or deactivated in the PreLOG-Commander in the area “Setup –
PreLOG Configuration – General – Operating Mode” as “Signal Linearisation.”
Tip: The integrated precipitation correction can only be activated at resolution factors ≥0.1.
At smaller resolution factors (< 0.1) the PreLOG automatically deactivates the correction.
Pulse Output
If another device should process the precipitation pulses, the received pulse can be output by the PreLOG by
activating its pulse output. The length of the output pulse depends on the specified resolution factor. At resolution
factors ≥0.1 the closing time (pulse length) is 125 ms. At resolution factors < 0.1 the closing time is reduced to
10 ms.
Attention! Please note that the pulse output of the PreLOG is not galvanically isolated!
Configuration
The pulse output can be activated or deactivated in the PreLOG-Commander in the area “Setup – PreLOG
Configuration – General – Operating Mode” at “Pulse Output Active.”
10ms Schließzeit / closing time
max. 50 Hz min. 250 ms
Schließzeit / closing time
Fig. 12
Permitted pulses with resolution factor < 0.1 Permitted pulses with resolution factor ≥0.1

11(15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
8.1 Recording
Recording of Precipitation Pulses With Timestamp
The PreLOG records each pulse with the value of the resolution factor and a timestamp. Thus times without
precipitation will not be explicitly registered. With activated precipitation correction the corrected values will be
recorded.
Attention! Since the real time clock has a resolution of 1 s, it is possible that at very high inten-
sities multiple values (pulses) will be recorded with the same timestamp!
With resolution factors < 0.1 it is recommended to record the precipitation in sums of configurable time intervals
instead of individual pulses.
Example:
Recording individual pulses; correction activated
Date Time Precipitation (in mm/m²)
01/11/2013 12:12:01 0.1
01/11/2013 12:13:01 0.1
01/11/2013 12:13:03 0.132 (corrected)
01/11/2013 12:13:06 0.112 (corrected)
... ... ...
Configuration
The recording of individual pulses will be activated, if the option “Individual Pulses” is selected in the selection
box “Setup – PreLOG Configuration – Operating Mode – Time Base” in the PreLOG-Commander. In the same
area you have to select the corresponding resolution factor of the sensor.
The date and time of the real time clock of the PreLOG is set by the function “Setup – Set PreLOG Clock” of the
PreLOG-Commander. By default the function suggests the date and time of the PC clock.
The circular buffer of the PreLOG can store up to 65535 measured values. Therefore the recorded values have
to be retrieved in appropriate time intervals. If the memory is full, the oldest value will be overwritten.
Recording of Precipitation Amounts in a Selectable Period
As an alternative the PreLOG can add up the received pulses of a selectable period with their (corrected) resolu-
tion factor and record the resulting “precipitation sums”. Hence the PreLOG can record the precipitation amount
e. g. at 1 min intervals.
With activated precipitation correction the corrected values will be recorded. Recording will take place on the
minute mark. Only values > 0 mm/m² will be recorded.
Example:
Recording every 10 min; correction activated
Date Time Precipitation (in mm/m²)
01/11/2013 12:10:00 0.5
01/11/2013 12:20:00 2.611 (corrected)
01/11/2013 14:10:00 0.8
01/12/2013 06:50:00 0.2
... ... ...
Configuration
The recording of the precipitation amount in periods of time will be activated in the PreLOG-Commander in the
selection box “Setup – PreLOG Configuration – Operating Mode – Time Base” by selecting a time in min.
The corresponding resolution factor has to be specified in the same area.
It is recommended to record in 1 or 10 min intervals. If the processing should be done with the software MeteoWare

12 (15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
Rain, the values should be recorded in 1, 2, 5, or 10 min intervals.
The flash memory (circular buffer) of the PreLOG can store up to 65535 measured values. In other words: if values are
recorded in 10 min intervals, even with permanent rain it is not necessary to retrieve the data more often than once a year
(52704 values).
Recording of Precipitation Amount Between Retrievals
In addition, parallel to the individual values or precipitation sums, the PreLOG records the precipitation since the
last data retrieval in an extra storage location. If the precipitation correction is activated, the corrected values will
be added up. The value will be reset to zero after each data retrieval or alarm message.
Furthermore the value can be retrieved and displayed with the PreLOG-Commander function “Retrieval – PreLOG
Status”. After this retrieval the value will be reset to zero, too.
Example:
Precipitation (in mm/m²)
21.318
Configuration
The recording of the precipitation amount between retrievals can be activated by checking the option “Calculate
Amount Since Last Retrieval” in the area “Setup – PreLOG Configuration – Operating Mode” in the PreLOG-
Commander.
Recording of Precipitation Amount since Switch On of the Device
The PreLOG records the total precipitation amount since switch on of the device. The value can be reset to zero
in the PreLOG-Commander. With activated precipitation correction the corrected values will be added up.
Example:
Precipitation (in mm/m²)
85.146
Configuration
The recording of the precipitation amount since switch on of the device can be activated by checking the option
“Calculate Amount Since Switch On” in the area “Setup – PreLOG Configuration – Operating Mode” in the
PreLOG-Commander.
The value can be reset to zero with the PreLOG-Commander function “Utilities – PreLOG Reset Total Precipita-
tion Amount”.

13(15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
8.2 Event / Alarm
To use the alarm functions of the PreLOG a GPRS modem is necessary, for example the one in the GRPS solar set.
In case of occurance of a predefined PreLOG event or alarm the PreLOG switches on the modem and transmits
the alarm data set with the following pieces of information:
Station name
Date / Time of the PreLOG
Event: Start of Precipitation YES / NO
Event: End of Precipitation YES / NO
Time Since End of Precipitation in s
Event: Exceeding of a Max. Precipitation Amount Since Last Retrieval / Message YES / NO
Amount Since Last Retrieval / Message in mm/m²
Event: Exceeding of a Max. Precipitation Amount in a Specified Period YES / NO
Max. Precipitation Amount in mm/m²
Duration of the Period in s
Event: Exceeding of a Max. Precipitation Intensity YES / NO
Max. Precipitation Intensity in mm/m²
.
Tip: If the transmission of the alarm data was successful, the PreLOG automatically transmits
the measured values since the last data retrieval.
Event: Start of Precipitation
If the event “Start of Precipitation” is activated, the PreLOG will transmit an alarm message as soon as it has
started to rain (or any other precipitation). The event will be triggered if the specified precipitation amount is detected
in a defined moving time interval. The moving time interval is moved every 6 s and the precipitation amount in the
time interval is recalculated.
Configuration
The alarm “Start of Precipitation” can be activated in the PreLOG-Commander in the tab “Setup – PreLOG
Configuration – Alarm (Part 1)”. Furthermore the “Amount Threshold” in mm/m² as well as the “Trigger Period”
(period in which the amount threshold has to be reached to trigger the alarm) and the “Release Period” (period
for which no further precipitation shall be detected to release the alarm again) in min can be specified in the cor-
responding area. If the option “End of Precipitation” is selected in the selection box for the release period, the
event “Start of Precipitation” cannot be triggered before the event “End of Precipitation” has occured.
Event: End of Precipitation
If the event “End of Precipitation” is activated, the PreLOG will transmit an alarm message if it stops to rain. The
event can only be triggered if the event “Start of Precipitation” or the event “Exceeding of a Max. Precipitation
Amount as Moving Sum” has been triggered.
Configuration
The alarm “End of Precipitation” can be activated in the PreLOG-Commander in the tab “Setup – PreLOG
Configuration – Alarm (Part 1)”. Furthermore the “Trigger Period” (in which no further precipitation may be
detected) and the “Release Period” (in which the alarm cannot be triggered again) in min can be specified in the
corresponding area.
Event: Exceeding of a Max. Precipitation Amount since Last Retrieval or Message
If the event “Exceeding of a Max. Precipitation Amount Since Last Retrieval” is activated, the PreLOG will
transmit an alarm message if a max. precipitation amount is exceeded since the last retrieval or message. After
the alarm has been sent, the PreLOG resets the “Precipitation Amount Since Last Retrieval” to zero.

14 (15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
Tip: Please note, that the PrecipitationAmount Since Last Retrieval will be transmitted in the alarm
data and reset after any other alarm, too.
Also keep in mind, that the Precipitation Amount Since Last Retrieval will be reset to zero after
retrieval of the PreLOG Status.
Configuration
The alarm “Exceeding of a Max. Precipitation Amount Since Last Retrieval” can be activated in the PreLOG-
Commander in the tab “Setup – PreLOG Configuration – Alarm (Part 1).” Furthermore the “Amount Threshold”
can be specified in steps of 0.1 mm/m² between 0 and 100 mm/m².
Event: Exceeding of a Max. Precipitation Amount as Moving Sum in a Selected Period
If the event “Exceeding of a Max. Precipitation Amount in a Selected Period” is activated, the PreLOG transmits
an alarm message if a max. precipitation amount is exceeded in a given time interval. The event will be released
as soon as the detected precipitation amount per time interval falls below a specified release amount. The moving
time interval is moved every 6 s and the precipitation amount in the time interval is recalculated.
Configuration
The alarm “Exceeding of a Max. Precipitation Amount in a Selected Period” can be activated in the PreLOG-
Commander in the tab “Setup – PreLOG Configuration – Alarm (Part 2).” Furthermore the “Trigger Period” can
be specified in steps of 1 min between 1 and 60 min in the corresponding area as well as the “Amount Threshold”
and the “Release Amount” in steps of 0.1 mm/m² between 0 to 100 mm/m².
Event: Exceeding of a Max. Precipitation Intensity
If the event “Exceeding of a Max. Precipitation Intensity” is activated, the PreLOG transmits an alarm if a max.
intensity is exceeded at all times of a given period. The event will be released if the intensity falls below a specified
release intensity.
Configuration
The alarm “Exceeding of a Max. Precipitation Intensity” can be activated in the PreLOG-Commander in the
tab “Setup – (PreLOG) Configuration – Alarm (Part 2).” Furthermore the “Time Base” (for the calculation of
the intensity) can be specified in steps of 1 min in the corresponding area as well as the “Intensity Threshold”,
the “Release Intensity” (intensity has to drop below this value before another alarm can be triggered) in steps of
0.1 mm/min up to 100 mm/min and the “Trigger Period” in min (during which the intensity has to be above the
intensity threshold).
8.3 Data Transmission
The PreLOG can transmit data in several ways: from communication via USB cable to a directly connected PC to
the use of mobile communications networks. For instance in the case of automatic transmission via modem to a
PC with appropriate MeteoWare software e. g. the MeteoWare Rain.
In all cases the communication is done via the 8-pin M12 connector (COM1).
For further details regarding the configuration of the data transmission see chapter 9.2.2 (pp. 20 ff.) as well as
9.2.4 (p. 24).
Remote Request (Online/PSTN/GSM/CSD)
This technology establishes a dedicated communication channel (circuit) through the network before the nodes may
communicate. Consequently the COM1 interface is permanently available. The central node can call the PreLOG
at any time and retrieve the data via landline (PSTN - Public Switched Telephone Network), or GSM network
(CSD - Circuit Switched Data). In this communication type the PreLOG does not send alarm messages.
Many telecommunication carriers are dropping support for CSD, and CSD has been superseded by packet oriented
mobile data services.
Since the COM1 and the modem are permanently activated and consume energy in this type of communication,
the CSD mode is only conditionally suitable for applications with solar power supply.
Please note the respective connecting diagram (Fig. 10, p. 8).

15(15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
Remote Send (GPRS)
The COM1 interface (with connected modem) will be activated by the PreLOG in specified intervals or to transmit
triggered alarm messages. Then a packet oriented connection to an appropriate MeteoWare host with static IP
address will be established via GPRS.
All data which have not been sent previously, will be transmitted automatically by the PreLOG. It recalls the last
transmitted data set and starts the next transmission with the following data set. If there are no recent data avail-
able, the record “NoData” will be transmitted.
After a successful data transmission the interface and the modem will be deactivated.
This type of communication is most suitable for application with limited power supply e. g. solar powered precipita-
tion stations. Please note the respective connecting diagram (Fig. 9, p. 8).
Additional remark for the recommended communication mode „Remote Send“:
The MeteoWare host must be accessible via internet on an invariable address (hostname/IP address). Either with
a static IP address (for example a company network with a fix connection to the internet via firewall) or, in case
of a dial up connection (DSL), via a so called Dynamic Hostname Service: A well-known example (among others)
is DynDNS. Such a dynamic DNS service automatically maps between the volatile IP address of the router (that
will change on every dial up, but at the latest once a day) and a fix hostname.
Remote Send / Request (GPRS/GSM)
The COM1 interface and a connected modem are permanently activated. Requests can be made as in the com-
munication type Remote Request. In the specified interval or in case of alarms the PreLOG will transmit data as
in the communication type Remote Send.
Since the COM1 and the modem are permanently activated and consume energy in this type of communication,
its suitability is limited for applications with solar power supply.
Attention! If the mode “Remote Send / Request”is used, the PreLOG will terminate a possibly exist-
ing connection and thereby any ongoing data transmission of a Request process and establishes
a new connection to execute the Send process on time.
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Fig. 13

16 (15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
Please also note the respective connecting diagram (Fig. 10, p. 8).
8.3.1 Data Retrieval using PreLOG-Commander (USB)
With the PreLOG-Commander the recorded data sets on the PreLOG can be retrieved directly via USB or RS232
connection for specified time frames and saved into a CSV file.
Implementation:
Connect the PreLOG to a PC or notebook via USB or serial interface (RS232).1.
Select the corresponding PreLOG and the option “2. Standard PC” for the PC modem in the menu “Setup
– Select Current Station”
Make sure, that in the area “3. Setup – PreLOG Configuration – General – PC Settings” the connection type
“Online” and the baud rate “115200” Bd for USB or “19200” Bd for RS232 connections are selected.
Using the function “4. Retrieval – Measured Values” you can retrieve the data from the PreLOG. Select the
desired time frame and after pressing “Request” specify the directory and file name for the CSV file.
The corresponding data set will be saved to a CSV file. The format can be defined with the function “5. Setup
– CSV Format Settings” (see p. 24). These files can be further processed with Microsoft Excel.
The circular buffer of the PreLOG can store up to 65535 measured values (with timestamp). With a time base of
10 min, a whole year with (hypothetical) permanent raining can be recorded.
8.3.2 Data Retrieval using PreLOG-Commander (GSM Mode)
In addition to the direct data retrieval via USB, the PreLOG can transmit the recorded data sets for specified time
frames via an appropriate GSM modem to a PC with PreLOG-Commander and save them as a CSV file.
Implementation:
Before you use the station it has to be configured with the PreLOG-Commander via USB or serial interface1.
(RS232) for GSM communication (see pp. 20 ff.).
Connect the PreLOG to a PC or notebook via USB or serial connection (RS232).•
Select the PreLOG and the modem option “• Standard PC” under “Setup – Select Current Station”
Retrieve the configuration of the corresponding station (“• Request CFG”) and check the connection set-
tings in the tab “Setup – PreLOG Configuration – General” and “– PreLOG Internal Communication”
For the appropriate values see the corresponding sections in ch. 9.2.2 on pp. 20 ff. and the documen-
tation of the modem in use. – if necessary. “Save” and transmit the new configuration to the station
(“Send CFG”).
Initialise the PreLOG modem for GSM communication with the function “• Setup – Modem
Configuration” (for the appropriate values and commands see ch. 9.2.4 pp. 24 ff.).
Afterwards the PreLOG can be commnuicated with via GSM using the PreLOG-Commander:2.
Select the corresponding PreLOG and PC modem in the menu “• Setup – Select Current
Station”Retrieve the configuration of the corresponding station (“Request CFG”) and make sure,
that the connection settings in the tab “Setup – PreLOG Configuration – General” and “– PreLOG
Internal Communication” are correct (for the appropriate values see the corresponding sections on
pp. 20 ff. and the documentation of the modem in use).
Using the function “3. Retrieval – Measured Values” you can retrieve the data from the PreLOG. Select the
desired time frame and after pressing “Request” specify the directory and file name for the CSV file.
The corresponding data set will be saved to a CSV file. The format can be defined with the function “4. Setup
– CSV Format Settings” (see p. 24). These files can be further processed with Microsoft Excel.
8.3.3 Data Retrieval using MeteoWare Rain (USB)
With the MeteoWare Rain the recorded data sets on the PreLOG can be retrieved directly via USB or RS232
connection for specified time frames and saved into the MeteoWare Rain database. If required, the data can be
exported in several file formats.

17(15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
Implementation:
Connect the PreLOG to a PC or notebook via USB or serial interface (RS232).1.
Select the corresponding PreLOG and the option “2. Standard PC” for the PC modem in the menu “Setup
– Workstation”
Make sure, that in the window “3. Setup – Station” the correct COM port is selected as well as the connec-
tion type “Online” and the baud rate “115200” Bd for USB and “19200” Bd for RS232 connections.
Using the function “4. Online – Mean Values” you can retrieve the data from the PreLOG.
The data set will be saved directly into the MetoWare Rain database. With the function “5. Utilities –
... export” the data can be exported in the formats “MW” (MeteoWare Rain specific), “ASCII”, “dBASE”
and “Excel.”
For a complete documentation of the scope of functions please refer to the operating instructions (help pages)
of the MeteoWare Rain.
8.3.4 Data Retrieval using MeteoWare Rain (GSM Mode)
In addition to the direct data retrieval via USB the MeteoWare Rain can transmit the recorded data sets via an
appropriate GSM modem for specified time frames and save them directly into the MeteoWare Rain database. If
required, the data can be exported in several file formats.
Implementation:
Before you use the station it has to be configured with the1. PreLOG-Commander via USB or serial interface
(RS232) for GSM communication (see pp. 20 ff.).
Connect the PreLOG to a PC or notebook via USB or serial connection (RS232).•
Select the PreLOG and the modem option “• Standard PC” under “Setup – Select Current Station”
Retrieve the configuration of the corresponding station (“• Request CFG”) and check the connection set-
tings in the tab “Setup – PreLOG Configuration – General” and “– PreLOG Internal Communication”
For the appropriate values see the corresponding sections in ch. 9.2.2 on pp. 20 ff. and the documen-
tation of the modem in use. – if necessary. “Save” and transmit the new configuration to the station
(“Send CFG”).
Initialise the PreLOG modem for GSM communication with the function “• Setup – Modem
Configuration” (for the appropriate values and commands see ch. 9.2.4 pp. 24 ff.).
Afterwards the PreLOG can be commnuicated with via GSM using the PreLOG-Commander:2.
Select the corresponding PreLOG and the PC modem in the menu “• Setup – Workstation”
Check the settings for the interface and the connection in the menu “• Setup – Station.” For the ap-
propriate values see the corresponding sections in the operating instructions of the MeteoWare Rain
and the documentation of the modem in use.
Using the function “3. Online – Mean Values” you can retrieve the data of a specified time frame from the
PreLOG.The corresponding data set will be saved directly into the MeteoWare database. With the function
“Utilities – ...export” the data can be exported in the formats “MW” (MeteoWare Rain specific), “ASCII”,
“dBASE” and “Excel.”
For a complete documentation of the scope of functions please refer to the operating instructions (help pages)
of the MeteoWare Rain.
8.3.5 Data Reception using MeteoWare Rain (GPRS Remote Send Mode)
With the MeteoWare Rain and the corresponding GPRS service you can receive measured values sent via GPRS
from up to 255 known PreLOG. Received data sets are stored in the MeteoWare Rain database.
Implementation:
Before you use the station, it has to be configured for GPRS communication using the1. PreLOG-Commander
(see pp. 20 ff.).
Select the corresponding PreLOG and the option “• Standard PC” for the PC modem in the menu
“Setup – Select Current Station”
Retrieve the configuration of the corresponding station (“• Request CFG”) and check the connection set-
tings in the tab “Setup – PreLOG Configuration – General” and “– PreLOG Internal Communication”

18 (15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
For the appropriate values see the corresponding sections on pp. 20 ff. and the documentation of
the modem in use.
Test the GPRS functionality with the “• GPRS Test” button in the “Setup – PreLOG Configuration”
window.
Configuration of the station in the MeteoWare Rain with the button “2. Setup – Station – New”
Set the station (number code), name and short description.•
Select the station type.•
Specify the interface settings.•
Press the button “• Retr. settings.” Afterwards the MeteoWare Rain configures itself automatically.
Setting up the GPRS service on the MeteoWare host.3.
Start the MeteoWare Rain-Service-Control-Manager by pressing the shortcut “• MWR_SCM” (on the
desktop after installation).
Install the GPRS service in the tab “• Install.”
Start the GPRS service in the tab “• Start / Stop.”
The corresponding data set will be saved directly into the MeteoWare data base. With the function “4. Utilities
– ...export” the data can be exported in the formats “MW” (MeteoWare Rain specific), “ASCII”, “dBASE”
and “Excel.”
To receive data from a station the PC has to be switched on and must be connected to the
internet. There is no need to have any user logged-in.
8.3.6 Automated Data Reception and Monitoring of Measuring Net-
works using MeteoWare Rain full version
In addition to the periodical reception of data from stations via GPRS and the manual retrieval of data from the
stations one by one via USB or GSM, the full version of MeteoWare Rain is able to retrieve respectively receive
the data and alarm messages of complete networks automatically via GSM/GPRS. Thereby the full version of
MeteoWare Rain is the software of choice for monitoring measuring networks with several PreLOG. For a complete
documentation of this and further functions please refer to the operating instructions (help pages) of the MeteoWare
Rain software. Before you use the station in this way, it has to be configured for GPRS communication using the
PreLOG-Commander (see pp. 20 ff.)

19(15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
9 PreLOG-Commander
The PreLOG will be configured with the PreLOG-Commander - best done with the PreLOG connected directly to
the PC via USB.
Requirements:
PC with Windows XP, Windows 7 or Windows 8•
1 USB port•
FTDI driver - the latest version is available at www.ftdichip.com/Drivers/VCP.htm•
Features of the PreLOG-Commander
Configuration and test of the PreLOG•
Documentation of the configuration•
Retrieval of the recorded data via USB or GSM modem•
Configuration and test of modems for communication•
Saving the measured values on the PC / notebook as excel-compatible CSV file•
Visualisation of the CSV file in a table•
9.1 Initial Configuration of a PreLOG – Quickstart
Please note:
Information and warnings displayed on the screen should be read conscientiously and all
consequential steps performed. If you close the messages too quickly, it is likely you will miss
important information!
Connect the PreLOG to a PC or notebook via USB. Start the PreLOG-Commander and open the function1.
“Setup – PreLOG Configuration.”
Create a new configuration by pressing the button “2. New.”
All fields will be filled with factory settings.
Enter a station name - up to 32 characters of the ISO 8850-15 standard are allowed.a.
Specify the COM port the PreLOG is connected to.b.
Save the configuration by pressing the “c. Save” button.
Retrieve the configuration of the connected PreLOG with the “3. Request CFG” button. Now the PreLOG-
Commander displays the configuration data of the connected PreLOG.
Save the retrieved configuration under the new station name and afterwards configure if necessary and
save the configuration again. For further information on the configuration option please refer to chapter
9.2.2 on the following pages.
At the end transmit the configuration to the PreLOG by pressing the “4. Send CFG” button.
If the Prelog should be used in the “5. Remote Request” mode, the used modem has to be initialised with the
function “Setup – Modem Configuration” (see pp. 24 f.).
Now the PreLOG can be mounted and used at its operational site.6.
Tip: If the PreLOG will not be externally power supplied, we recommend to charge the battery
completely via USB before using the PreLOG. This may take up to 8 h.
9.2 Setup
9.2.1 Setup - Select Current Station
The PreLOG-Commander can manage up to 255 stations.
Under the function “Select Current Station” in the field “Station” you can specify the station you want to configure
or from which you want to retrieve measured values. In the field “Modem” the PC modem has to be selected. If
no modem is used, the option “Standard PC” has to be selected. When you “Close” the window, the settings
will be saved.

20 (15190) PreLOG Operating Instructions
Operating Instructions
Data Logger PreLOG (15190)
9.2.2 Setup – PreLOG Configuration
The function “PreLOG Configuration” is used to configure PreLOGs.
Tip: Please note that a PreLOG can only be configured if it is connected to the configuring PC!
The window “PreLOG Configuration” has 4 tabs: “General”, “PreLOG Internal Communication”, “Alarm (Part
1)” and “Alarm (Part 2).” In the tab “General” you can specify the “Station Identification” and “Operating Mode”
as well as the “PC Settings” for the communication. In the tab “PreLOG Internal Communication” you can
specify the settings of the PreLOG for the communication via modem. For further information on the configuration
of the modem respectively the initialisation commands for the modem, please refer to chapter 9.2.4 (p. 22) and
the documentation of the modem in use. In the tabs “Alarm (Part 1)” and “Alarm (Part 2)” you can define certain
events at which the PreLOG will transmit a standardised alarm message via GPRS modem.
General
Station Identification
The “Serial number” and the date of the “Last Configuration” will be obtained from the PreLOG which is selected
under “Setup – Select Current Station.” They are used to identify the station. The standard station number is
0001. This value should only be changed if, and only if, multiple PreLOG systems are in the same network or are
used with GPRS communication. Numbers between 0001 and 9999 are allowed.
Tip: The station number “0”ist reserved. Every PreLOG will react with it on requests, but no
PreLOG can be configured to have the station number “0.”
If the station number of the PreLOG differs from the number saved in the PreLOG-Commander, please first check
if the correct station is selected (“Setup – Select Current Station”). If you know the station number, enter it in the
field and press the tabulator key. An “Enter” button will then appear, click on this to finish the process. Afterwards
communication with the connected PreLOG should work again. If you do not know the station number, enter the
station number “0” instead. “Request CFG” you receive the configuration data of the connected station and thereby
the current station number. Before closing the window save the data by pressing the “Save” button.
Operating Mode
Since the PreLOG is a pulse logger, it is mainly used to record amounts of precipitation over time. To use it this
way one selects in the field “Time Base” the duration in min over which the pulses are added up. If instead of a
time “Individual Pulses” is selected, the PreLOG records each pulse with a corresponding timestamp. The pulses
will be recorded with the specified resolution factor or if necessary with the corresponding intensity-dependent
corrected value and a timestamp. The sums are calculated respectively and recorded with timestamp, too.
In the field “Resolution Factor” you can enter the amount of precipitation in mm/m² which corresponds to a
tipping bucket pulse of the connected precipitation sensor. In case of precipitation sensors of the type 1518H3,
15188 and 15189 this is 0.1 mm/pulse for the 2 cm³ tipping bucket and 0.2 mm/pulse for the 4 cm³ tipping bucket.
If a rain[e] is connected, the resolution factor has to be selected in accordance to the rain[e] settings (smallest
possible value: 0.01).
For LAMBRECHT precipitation sensors without an integrated precipitation correction or signal linearisation the
PreLOG specific linearisation can be activated by checking the box for “Signal Linearisation.” It compensates
the intensity-dependent measuring error due to the principle of tipping bucket precipitation sensors. It means that
precipitation amounts (individual pulses as well as sums) will be recorded corrected depending on the intensity.
If needed the PreLOG can “Calculate Sum Since Switch On” (amount of precipitation since the PreLOG was
switched on) and “Calculate Sum Since Last Retrieval.” These options can be activated with the corresponding
check boxes. The recorded precipitation amount since the last retrieval will be reset to zero automatically after
each retrieval. The values will be recorded and displayed in mm/m². Removing the battery and disconnection from
any power supply will reset both values to zero, too.