1. Introduction
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– TW-31-E - V1.9 - 06.04.2021
1.4 Device description
The tank monitor TW-31 fully automatically monitors all processes (cooling, storage
and cleaning processes) in milk cooling tanks. The objective here is to be able to
remedy problems with the milk storage early enough by early alerting in order to
prevent economic damage.
The TW-31 can be connected to all conventional tank brands and different system
types such as VMS or common milking systems.
Automatic detection of the operating mode
The TW-31 detects independently the mode (cooling, cleaning or empty) of the con-
nected milk cooling tank. Depending on the mode it stores the temperature of the
tank at different intervals. If the temperatures are beyond the set limits, the farmer or
the tank driver is alerted visually as well as acoustically. The exact error cause can
be determined via the alarm code shown on the display.
Alarms
The TW-31 distinguishes between informative and critical alarms.
- The informative alarm (blinking green LED) signals to the farmer an improper
operation -> action required
-
The critical alarm “DO NOT LOAD” (blinking red LED) addresses the driver of
the milk-collecting-truck. Together with the farmer the driver decides what to
do next.
In addition to the two warning LEDs, an external warning light, an audible signal
device or dialer can be connected.
You will find the description of the operation method in section 6.1.
Function monitoring
In addition to the temperatures the proper functioning of all agitators and the proper
cleaning process of the milk tank are monitored. In case of errors the corresponding
alarms are also generated.
Power failure
With the integrated power pack the temperatures are monitored and stored even in
the case of a power failure. Thus the TW-31 can continue its work during a power
failure and activate an alarm.
Data storage/-evaluation
The determined data of the last 300 days (max.) temperatures, alarms, operating
mode changes, etc.) are stored in the CSV-format and can thus be opened in other
programs.
The data can be read out by simply inserting a standard USB-stick into the USB
socket - without further operation of the tank monitor.
EMAIL or SMS remote maintenance modems
By an optional Email or SMS remote maintenance modem error messages can be
sent via Email or SMS to inform the farmer at an early stage.
