Always fit a pre-filter when using the oxygen indicator for welding and in dusty
environments; see the section “Spare parts and accessories” on page 18.
The use of a pre-filter will increase the reaction time before the correct indication can be
read.
3.3. Measurement
SGI-3 and OXI-3:
Gas values are measured by turning on the built-in pump. Start and stop the pump by
pressing the "
PUMP
" button or by means of an external control signal via the DIN
connector on the front plate. The on/off state of the pump is automatically stored, if the
supply voltage is cut off.
Warning:
SGI-3 and OXI-3 must never be exposed to direct gas pressure, as the gas flow
is controlled by the built-in pump.
OXI-3.1:
When the OXI-3.1 is connected to mains, it will be ready to measure after the warm-up
period, when the “
READY
” LED is constantly lit. The OXI-3.1 has no pump, and
therefore it measures continuously when the measuring gas is forced through the gas inlet.
3.4. Alarm (SGI-3 and OXI-3 only)
The device has a built-in alarm function that goes off in case of excessive oxygen
concentration.
The alarm function is not available until the device is ready for use (“
Ready
” is lit).
The alarm can be activated or deactivated manually by briefly pressing both alarm buttons
( and ) at the same time.
If the oxygen level exceeds the selected alarm limit, the alarm is automatically activated.
When the alarm is activated, the "
Alarm
" LED is lit, the row of LEDs flashes, and an
acoustic alarm is sounded.
Interrupt the acoustic alarm by pressing one of the alarm buttons. If a new alarm is
triggered, the acoustic alarm is activated again.
The alarm limit can be displayed in the row of LEDs by pressing one of the two alarm
buttons. A flashing LED indicates the maximum “permissible” oxygen level for 3 sec.
The alarm limit can be adjusted by pressing and holding both alarm buttons ( and ) for
3 sec. The green "
Alarm
" LED will now flash, and the alarm limit appears from the row of
red LEDs. Press or to lower or increase the setting. The new setting is automatically
stored after 3 seconds or if both alarm buttons are pressed at the same time, and the SGI-3
/ OXI-3 returns to normal mode.
The device can be fitted with an
extra powerful
internal acoustic alarm (accessory).
3.5. Shutdown
When measuring is complete, the pump can be stopped (SGI-3 and OXI-3 only).
Do not disconnect the supply voltage, if you intend to use the oxygen indicator again
within the next few hours.
When shutting down the device, please note that it is sensitive to shocks, particularly
when hot. We recommend that you let the oxygen indicator cool off completely (approx.
20 minutes) before packing it into a transport container.
PBI-Dansensor A/S
SGI-3/OXI-3/OXI-3.1 User manual
8
PBI-210247-H UK 07/11/2005
Summary of Contents for OXI-3
Page 3: ......
