User guide

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MRK-D-0022 V3.1 Aeroqual Series 200, 300 & 500 User Guide
2. To view archived logged data, Click File  Database management  Unzip Database
 Select the zipped file and click OK.
 View and analyse data as required (Data  Table Logged)

Note: To view an archived database it is important that any existing data logging function is
not interrupted. Do not view archived data on the same PC being used for data logging; the
current data in the database will be lost unless it has been zipped.
5. External Control Wiring (Series 300 & 500)
The pin numbers for the external output connector are numbered from 1 to 6. Pin 1 is the closest pin
to the power jack.
The pin designations are as follows:
1. 12 V DC
2. Analogue output 0-5 V
3. Control
4. High alarm
5. Low alarm
6. Ground
The RJ12 connector offers two possibilities for wiring, either a switch to GND or a 12V output. If the
12V output is used, the power for the relay coil is supplied by the Aeroqual AC/DC adaptor. In this
case, ensure that the relay coil does not draw more than 150mA and that a protection diode is
inserted across the relay coil.
If the switch to GND output is used, ensure that the relay coil does not draw more than 150mA, that
the voltage does not exceed 24V and that a protection diode is inserted across the relay coil.
5.1. Wiring for Alarm
The high alarm and low alarm pins can be wired to supply simple on / off switching to operate
equipment which requires only an on or off signal, such as an alarm.
To switch to GND use pins 4, 5 and 6. For a 12V output wire to pins 4, 5 and 1 (see the following
diagram for typical wiring for high alarm). This feature will only operate while powered by the AC
adaptor.
High gas level alarm
Note: Failure to insert a circuit protection diode, shown as above, will result in damage to the
monitor if a voltage spike is created by the relay.