Installation, operating and maintenance manual
UNIGAS 300
DDG6004MHGB/08-2017/Rev.A2 Software version from M 1.3.40 and D 2.3.37
14
7:
Keypad for controlling UNIGAS 300.
8:
Breather opening for pressure equalisation between UNIGAS 300 and ambient atmosphere. Behind the
breather opening a membrane is placed that prevents ingress of moisture.
Take care not to damage the membrane.
9:
Communication port 1 for remote communication, including connection of a modem using an infrared
connector. This infrared connector is shown in the figure.
10:
Communication port 2 for communication with, e.g., a process computer. Through this communication
port the gas consumer can read out data on consumption etc. This communication port is specifically
intended for local and frequent data readout. Reading out frequently does not affect the performance of
UNIGAS 300. It does reduce the service life of the battery. To activate the port a module must be placed.
Application notes are available for connecting the port to an RS232, USB or TTL serial port. Contact
Wigersma & Sikkema for more information.
11:
Dot matrix display. The display is activated when one of the navigation keys is operated. If the navigation
keys are not operated for 1 min, the display will be switched off.
Inside
Figure 4. Interior view UNIGAS 300
1:
Connection for battery.
2:
Jumper for battery power or external power. When external power is used, this jumper must be placed
in the position EXT; when battery power is used this jumper must be in the position BATT. If this jumper
is in the position EXT while no external power is available, the system will automatically switch to battery
power.
When external power is used and the jumper is in the position BATT, UNIGAS 300 will shut down.
When the HF impulse input is used, external power is necessary.
3:
Calibration lock / calibration switch. The calibration switch must be actuated while programming a
calibration parameter. After actuation the lock remains open for 15 seconds. The calibration switch can
be operated with a pin (e.g. with the tip of ballpoint). The calibration switch is to be sealed with an
adhesive seal.
4:
Battery holder. When using a DD cell, the break-off tab that fixes the D cell must be cut.
5:
Fixation of the PCB and the protective cover. The bolt is sealed with a sticker seal.
Summary of Contents for UNIGAS 300
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