INFICON XRS9012 User Manual

Sensistor XRS9012

Hy d r o g e n Leak Det e c t o r

Maintenance manual

Publication: INFICON AB - nioa62e1-b (1111) - All information can be modied without prior notice

MAINTENANCE MANUAL HYDROGEN LEAK DETECTOR – Sensistor XRS9012

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Contents

Page

1. Maintenance and repair 3

1.1 Function and controls 3

1.1.2 Battery charger 4

1.2.3 Probe attachment 4

1.2 Changing batteries 5

1.2.1 Removing ex cable 6-7

1.2.2 Removing front cover 8-9

1.2.3 Replacing the circuit board 10

1.3 Product information 11

1.4 Spare parts list 12

1.5 Function check 12

1.6 Sensitivity check 12

INFICON - Maintenance manual Sensistor XRS9012

MAINTENANCE MANUAL HYDROGEN LEAK DETECTOR – Sensistor XRS9012

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1 Maintenance and repair

The Sensistor XRS9012 is maintenance
free, except for battery replacement (normal­ly every three years). This section describes
the functions of the instrument and gives
advice as how to function tests should be
carried out.

1.1 Function and controls

Following functions are controlled from the
panel:

- Sensitivity: can be varied in 10 steps, each
step doubles the sensitivity.

- On/Off: the detector has an automatic
switch-off aftr 30 minutes of no activity.

- Battery Check: At least 8 of the light emit­ting diods (LED) will illuminate at full
charge. Full charge takes one hour.

- Zero: the detector has an automatic zero­ing function. The ZERO button allows the
operator to force the signal to zero instanta­neously.

EN

- Sound level: the volume can be changed in
64 steps.

- Earphone output

- MAX: this is a peak-hold function allow­ing the operator to compare the maximum
gas signal in two different places.

- SEARCH (default): this is the normal
mode where the signal follows the gas con­centration. The detector always starts in this

INFICON - Maintenance manual Sensistor XRS9012

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1.1.2 Battery charger

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The voltage range for charging is 9 ­15VDC. To operate on mains voltage
a voltage converter is connected to the
power input at the back of the unit.
There is also a possibility to connect
the unit to the car cigarettelighter,
which enables the unit to be charged
in the car.

1.1.3 Probe attachment

All probes are attached to the Leak
Detector Sensistor XRS9012 via cable
C21 to the socket at the back of the
unit.

INFICON - Maintenance manual Sensistor XRS9012

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1.2 Changing batteries

Before reading this section, please
see picture on page 11 to get an over­view of the assembly.

We recommend changing batteries
every three years (batteries will nor­maly last for several more years but
operation time is shortened).
Follow the procedure described
below. The batteries are placed inside
the Leak Detector.

Remove the four screws holding the
back cover

Remove the cover carefully

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Disconnect the exible cable

from the probe connector
circuit board (see next page)

INFICON - Maintenance manual Sensistor XRS9012

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1.2.1 Removing ex

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cable

Be very careful when removing the

exible cable in order not to demage

the rivet, the cable or the circuit
board. Read the whole section 1.2.1
before commencing work.

- First remove the rivet by carefully
pulling it upwards.

- Thereafter pull the holder the same
way.

Figure 1, Rivet and holder in place

Figure 2, Rivet is removed holder
still in place

Figure 1

Rivet

Holder

Flexible cable

Circuit board

Connector

Figure 2

Figure 3, Rivet and holder removed

Next step before pulling out the exi­ble cable is opening the circuit board

Figure 3

connector (see next page).

INFICON - Maintenance manual Sensistor XRS9012

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To open the connector, pull the
locking mechanism away from the
connector body

Pull the cable straight out of the
connector

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Locking mechanism

Closed Open

The interior of the Leak Detector is
now accessible. It is now possible to
loosen the front cover.

INFICON - Maintenance manual Sensistor XRS9012

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1.2.2 Removing

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front cover

Remove the four front panel screws
from inside and the front cover care­fully.
NB: the power supply cable from
the back cover is still attached to the
circuit board on the front cover

Diconnect the power supply cable
from its connector on the circuit
board

Front and back covers removed

INFICON - Maintenance manual Sensistor XRS9012

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Disconnect the cables attached to
the batteries, one battery at the time.
Remove the screws holding the bat-

tery (see gure).

NB: there are two screws holding
each battery.

Screw holding battery

Cables

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Replace the battery, connect the
cables and tighten the screw. Repeat
this for all three batteries

Re-assemble the Leak Detector

The new batteries should be charged
for >12 hours to be fully charged.
The Sensistor XRS9012 Leak
Detector is ready for use.

INFICON - Maintenance manual Sensistor XRS9012

Battery

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1.2.3 Replacing the

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circuit board

Open the detector following the
instruction in section 1.2

Loosen and remove the screws
holding the circuit board to the front
cover. Disconnect the speaker and
earphone connector. Lift the circuit
board carefully so that there is access
to the connector from the circuit
board to the touch pad panel. Loosen
the connector carefully. Replace the
circuit board.

Circuit board front side

Front cover without circuit board

Circuit board backside

INFICON - Maintenance manual Sensistor XRS9012

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1.3 Product
information

Touch pad keyboard

Front cover

Rubber seal

Loudspeaker

Circuit board

Battery

Battery holder

Front panel screw

Rubber seal

Back cover

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Serial number label

Product facts:

Sensitivity: 0,7ppm H2 in air

Response time: < 1sec

Start-up time: 6 sec

Outputs:

- Display 10 level LED bar

graph

- Speaker 5-1600 Hz

- Earphones std earphones, 3,5mm

jack, > 8ohm

Power Supply: Rechargeble lead

batteries

Battery capacity: 13h @ 20o C

Protection: IP55

Size & weight: 250x120x85 mm, 1,9kg

260x220x95 mm, 2,5 kg

(incl. carrying case)

INFICON - Maintenance manual Sensistor XRS9012

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1.4 Spare part list

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Part no.
Battery 591-294
Earphones 591-443
Carrying case 591-304
Charger AC (591-300) 591-301 SV, 591-302 USA, 591-303 UK
Charger car 591-361
Hand Probe H21 590-200
Cable C21 590-150
Circuit board 591-293

1.5 Function check

Action Result

Connect charger The instrument starts
Disconnect The instruments turns off
Change sensitivety The LED’s indicates corresponding sensitivity
Adjust the volume The volume should change
Press “Battery Check” button The LED should indicate Battery status

Disconnect Hand Probe The ON LED should ash red and an audio

signal appear

1.6 Sensitivity check

Action Result

Start XRS9012 The instruments starts and indicates sensitivity 5

Adjust the sensistivity to 10 The no. 10 LED is ashing

Apply 10ppm Hydrogen Signal should indicate: minimum LED 1

INFICON - Maintenance manual Sensistor XRS9012

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