9
5-3. Power on
(1) Press and hold the POWER button. The unit gives off a long beep. Then
the green POWER LED starts flashing. The warm-up cycle (30-second
self-test followed by automatic zero adjustment) starts.
(2) When the warm-up cycle is completed, the flashing POWER LED
becomes steady, indicating that the unit is ready for detection.
5-4. Detection
Put the short probe to the suspected leak point. When a gas leak is detected,
the gas concentration value will be displayed on the LCD. If the gas
concentration level exceeds the preset level, the red ALARM LED starts
flashing and the detector starts beeping as shown in the table below.
Gas concentration exceeds
Red ALARM LED
Audio alarm
1
st
stage alarm set value
Flashes
Beeps
2
nd
stage alarm set value
Flashes fast
Beeps fast
F.S. value
Flashes faster
Steady tone
5-5. Power off
Before turning off the detector, ensure that the reading shows zero in clean air
by running the detector in clean air. Press and hold the POWER button to turn
off the detector.
•
Zero adjustment (zeroing) is performed automatically
when the detector is turned on. Turn on the detector in
clean air to prevent incorrect zero adjustment. Incorrect
zero adjustment will cause inaccurate detection.
•
After turning off the detector, leave it for more than one
second before turning it on again.
CAUTION
•
After detection of adsorptive gas (e.g., HF and F
2
),
replace the filter element (FE-112) with a new one
.
Correct detection is not possible if the filter element is
dirty.
CAUTION
•
Avoid liquid seepage (e.g., water). Liquid entering the
gas sampling tube or gas detector will impair proper gas
detection, leading to a product failure.
•
If the zero point drifts due to exposure to high
concentration gas, etc., power cycle the detector or
press and hold the ZERO button to perform a zero
adjustment. Ensure that the zero adjustment is done in
clean air.
CAUTION
8
5-2. Sensor Unit Installation
(1) Lift and unlock the snap latch on the sensor cover. Pull the cover
forward. The cover is now open (this cover cannot be detached from
the unit).
(2) Install a sensor unit in the detector by engaging with the connector and
sensor port on the detector.
(3) Reinstall the sensor cover and lock the snap latch.
•
Normal gas detection is not possible, if the sensor
unit is not securely connected to the detector, causing
poor airtightness.
•
Energize sensor units with an EC-7 sensor stocker
(sold separately) before use. Normal gas detection is
not possible if the sensor units are not sufficiently
energized. Insufficient energization may cause a
sensor fault alarm. Also, a sensor unit is being
energized while installed in the detector even though
the detector is off, as long as the battery remains or
power is supplied.
•
Before regular sensor unit replacement, fully energize
a new sensor unit (e.g., ex-factory unit) by installing it
in an EC-7 sensor stocker (sold separately) or this
detector.
•
Only use XDS-7 series sensor unit for this detector.
Others (e.g., CDS-7, COS-7, CHS-7) cannot be used.
CAUTION
Sensor unit
Sensor port
Sensor cover
Connector
Snap latch
9
5-3. Power on
(1) Press and hold the POWER button. The unit gives off a long beep. Then
the green POWER LED starts flashing. The warm-up cycle (30-second
self-test followed by automatic zero adjustment) starts.
(2) When the warm-up cycle is completed, the flashing POWER LED
becomes steady, indicating that the unit is ready for detection.
5-4. Detection
Put the short probe to the suspected leak point. When a gas leak is detected,
the gas concentration value will be displayed on the LCD. If the gas
concentration level exceeds the preset level, the red ALARM LED starts
flashing and the detector starts beeping as shown in the table below.
Gas concentration exceeds
Red ALARM LED
Audio alarm
1
st
stage alarm set value
Flashes
Beeps
2
nd
stage alarm set value
Flashes fast
Beeps fast
F.S. value
Flashes faster
Steady tone
5-5. Power off
Before turning off the detector, ensure that the reading shows zero in clean air
by running the detector in clean air. Press and hold the POWER button to turn
off the detector.
•
Zero adjustment (zeroing) is performed automatically
when the detector is turned on. Turn on the detector in
clean air to prevent incorrect zero adjustment. Incorrect
zero adjustment will cause inaccurate detection.
•
After turning off the detector, leave it for more than one
second before turning it on again.
CAUTION
•
After detection of adsorptive gas (e.g., HF and F
2
),
replace the filter element (FE-112) with a new one
.
Correct detection is not possible if the filter element is
dirty.
CAUTION
•
Avoid liquid seepage (e.g., water). Liquid entering the
gas sampling tube or gas detector will impair proper gas
detection, leading to a product failure.
•
If the zero point drifts due to exposure to high
concentration gas, etc., power cycle the detector or
press and hold the ZERO button to perform a zero
adjustment. Ensure that the zero adjustment is done in
clean air.
CAUTION
8
5-2. Sensor Unit Installation
(1) Lift and unlock the snap latch on the sensor cover. Pull the cover
forward. The cover is now open (this cover cannot be detached from
the unit).
(2) Install a sensor unit in the detector by engaging with the connector and
sensor port on the detector.
(3) Reinstall the sensor cover and lock the snap latch.
•
Normal gas detection is not possible, if the sensor
unit is not securely connected to the detector, causing
poor airtightness.
•
Energize sensor units with an EC-7 sensor stocker
(sold separately) before use. Normal gas detection is
not possible if the sensor units are not sufficiently
energized. Insufficient energization may cause a
sensor fault alarm. Also, a sensor unit is being
energized while installed in the detector even though
the detector is off, as long as the battery remains or
power is supplied.
•
Before regular sensor unit replacement, fully energize
a new sensor unit (e.g., ex-factory unit) by installing it
in an EC-7 sensor stocker (sold separately) or this
detector.
•
Only use XDS-7 series sensor unit for this detector.
Others (e.g., CDS-7, COS-7, CHS-7) cannot be used.
CAUTION
Sensor unit
Sensor port
Sensor cover
Connector
Snap latch
