Altronic DSM-43900DUS Installation Instructions Manual

ALTRONIC UNIVERSAL TEMPERATURE SCANNER
DSM-43900DUS
CAUTION: The DSM-43900DUS universal temperature scanners are suitable for use in Class I,
Groups C & D, Division 1 and 2 hazardous locations when installed in accordance with
these instructions.
The thermocouple leads connected to this device operate at a very low voltage and
power levels and MUST NOT CONTACT any external voltage source. Damage to the
system will result from connection between the thermocouple and the ignition system
or any AC or DC power source.
WARNING: DEVIATION FROM THESE INSTALLATION INSTRUCTIONS MAY LEAD TO
IMPROPER OPERATION OF THE MONITORED MACHINE WHICH COULD CAUSE PERSONAL
INJURY TO OPERATORS OR OTHER NEARBY PERSONNEL.
1.0 DESCRIPTION
1.1 The Altronic DSM-43900DUS universal temperature scanner is an electronic instrument
designed to monitor temperatures using industry standard type J or K thermocouples.
Automatic cold junction compensation is built-in. Three models DSM-43908 (8 channels),
DSM-43916 (16 channels) and DSM-43924 (24 channels) are available. The temperature
scanner uses a microcontroller to process the input signal and a nonvolatile memory to store
the setup and setpoint values. A 2x16 character LCD displays the channel number and the
numeric temperature value in °F or °C. A front mounted keypad serves as the user interface.
The instrument can read type J thermocouples between !76°F and 1382°F (!60°C and
750°C) and type K thermocouples between !76°F and +1472°F (!60°C and 800°C).
1.2 Each of the input channels may have 4 individual user established temperature setpoints that
can be adjusted using the keypad - a high and low alarm and a high and low shutdown.
Alternatively, the user may assign a selected number of channels (2 min.) to a group with a
common set of 6 setpoints (high, low and differential alarm and high, low and differential
shutdown) with the remaining channels having 4 individual setpoints as described in the
preceding sentence. There are two configurable output switches, one for alarms and one for
shutdowns. When the temperature has exceeded its setpoint value, a solid state output
switch turns on/off to the switch common, and a first setpoint and channel number LCD
indicators turn on. All setpoint changes are performed through the keypad or through RS-485
communications.
1.3 The DSM-43900DUS universal temperature scanner is designed to be versatile and simple
to use. Type J or K thermocouples and °F or °C units can be selected via the keypad. Either
automatic or manual scan functions can be selected. An alarm log is available for the first
four faults. RS-485 serial communications allows data and alarm status to be communicated
to other devices. An escape key is provided to permit the user to exit any setup function and
return to the normal display. A programmable software filter is also provided which can be
used to stabilize readings where the thermocouple signal is fluctuating. Calibration can be
performed using the keypad. Factory default configurations, including factory calibration
settings, can be recalled for easy setup.
INSTALLATION INSTRUCTIONS
FORM DSM43900 II 7-04