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7.4 Connecting via USB
Direct USB connection on products makes it easy to connect to Sintrol Products without any additional
equipment, provided that the USB-port has the capability to provide enough energy. The USB port is a Micro
USB type B, located on the bottom-right corner of the main board inside the enclosure.
USB is intended to be used for easy parameterization of Sintrol products with dedicated
complementary DustTool software. However, the USB is not suitable to operate or
substitute a dedicated industrial bus and it is not intended for extended use in an industrial
environment during normal operation.
7.5 Connecting the mA-output
An active and isolated mA-output signal (mA+ and mA-) is used to transfer an analog 4-20 mA current signal
that describes the measurement value.
After the default auto-setup procedure, the normal signal level is set to be 5% of the scale (i.e. 4.8 mA). Thus a
max signal level of 20 mA indicates a 20-fold increase in dust levels since auto-setup. The scale of mA-output
can also be customized according to the end user application.
An mA-output loop is intended to be used as a long range analog data transfer in industrial environments. The
signal output is isolated to shield against local potential differences between the two end locations.
The device will also alarm on the mA output for device failures according to NAMUR NE 43.
Normal measurement or Span/Zero self-test (relays indicating maintenance mode)
Failure, measurement grounded or device failure. Clean probe as instructed in
Maintenance –section.
Figure 12 mA loop connection
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