08-2019
Manual GSM-Messenger
P. 2
Basic Functions
The GSM-Messenger is a remote monitoring system for tank filling levels (liter), meter readings and alarm
events. The device operates with an integrated GSM mobile phone module that registers itself on the respec-
tive mobile network.
The LINK input can be connected to 1-4 TECSON oil level indicators. Additionally the device monitors the two
event inputs A1 and A2 which are connected to a potential-free break or make contact (Relays / Reed).
In the event of an alarm or in appointed time intervals the GSM-Messenger automatically reports the current
plant status. Therefore the Messenger generates an SMS with a plant identifier (header), report reason, liter
inventory, meter readings and plant status. The data is sent to the parameterized destination phone number via
SMS. Under normal reception conditions the attached antenna is sufficient for the internal GSM radio module.
For bad reception areas an external mobile radio antenna with a 5m to 10m cable can be connected. Such an
outdoor antenna is available as an equipment accessory.
The GSM-Messenger indicates the device status via ist 4 LEDs (see page 6).
After a power or mobile network blackout the device automatically redials into the GSM mobile network.
Counting Functions
Since software version V3.xx the GSM-Messenger contains an integrated counter function.
For device versions V2.xx the special variant Messenger C+, 2+ or A+ was necessary for a counter function.
For these counter functions potential-free switching contacts are connected to input A1 or A2.
These are typically either reed contacts, relay outputs or make/break contacts.
Via inputs A1 and A2 the following counting functions are applicable
- Impulse counter (e.g. water meter with reed output)
- Event counter (counts how often the contact has been closed, i.e. how often an event has occurred)
- Operating hours counter (e.g. time counter that indicates how long a contact state persists)
The counting mode can be activated and parameterized via command #Ai=
… .
See enclosed description
„
Messages, Commands and Parameters for the GSM-Messenger
“.
SIM Card
A prepaid or contract SIM card needs to be inserted into the GSM radio module.
This SIM card has to be operative i.e. it has to be registered and activated.
After entering the PIN code at the device the GSM-Messenger automatically dials up into the respective mobile
network. When using a prepaid SIM card the prepaid credit needs to be recharged if empty. This can be done
e.g. via internet contractor or at an ATM.
OilView Connection
If the device is connected to the www.oilview.de system all device settings can be performed by the OilView
systems administrator/user. Only exception: The PIN entry is to be performed via the device keys.
If the OilView system is not desired the whole parameter settings as well as the device communication is to be
made per SMS via a mobile phone. The parameters will be transmitted and permanently saved to the device
via SMS commands #... . Accordingly all reports generated by the device will be sent via SMS to the parame-
terized mobile phone numbers.
