Snifter mA+ EX RF User Manual 13
7 ADJUST PARAMETERS
Since every industrial process is different Snifter mA+ EX RF is designed so that
parameters which are important to customer can be easily adjusted. Adjustment of
parameters can be done by using USB, RS-485 or optionally with RF
communication. Depending on the chosen communication method set to the
device, the adjustments can be done either with Sintrol PC software or standard
Modbus RTU master unit.
By default, the communication mode of the device is set to work with Sintrol PC
software. To use MODBUS RTU communication, appropriate network parameters
needs first to be set into the device.
7.1 Signal averaging time
Snifter mA+ EX RF damping time has been adjusted to 100 seconds in factory but it
can be adjusted freely between 0 second and 6000 seconds (1 h 30 min).
7.2 Alarm level settings
Default Snifter mA+ EX RF alarm signal levels have been adjusted to 5 and 20 times,
compared to the process dust level during the automatic setup. These parameters
and signal logic can be adjusted freely to be any levels required by the customer’s
process monitoring demands.
7.3 Alarm delay time
It is possible to set delay time for Snifter mA+ EX RF alarm signals to avoid false
alarms caused by dust concentration peaks which appear naturally in process. On
factory settings, alarm delay is set to 30 seconds but it can be adjusted freely
between 0 and 60 000 seconds.
7.4 Alarm hysteresis time
Snifter mA+ EX RF contains alarm hysteresis time parameter which sets the
minimum frequency for alarm signal to change its stage. On a factory settings
hysteresis time is set to 0 seconds but it can be set freely between 0 and 25
seconds.
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