Sewerin Variotec 9-EX, SR 6 User Manual
Operating
Instructions
EX-TEC® SR 6,
VARIOTEC® 9-EX
103992
Measurable success by Sewerin equipment
You settled on a precision instrument.
A good choice!
Our equipment stands out for guaranteed safety, optimal output and efficiency.
They correspond with the national and international guide-lines.
These operating instructions will help you to handle the instrument quickly and
competently.
Please pay close attention to our operating instructions before usage.
In case of further queries our staff is at your disposal at any time.
Yours
Hermann Sewerin GmbH
Robert-Bosch-Straße 3
D-33334 Gütersloh
: +49 - (0) - 52 41/9 34-0
FAX : +49 - (0) - 52 41/9 34-4 44
www.sewerin.com
info@sewerin.com
EX-TEC SR 6: illustration
See page 15 for an explanation of individual items
1
Brief operating instructions
Brief operating instructions:EX-TEC SR 6, VARIOTEC 9-EX
switches the detector on and off
toggles between GAS-WARNING / GASMEASURING modes
toggles between total and optimum
measuring ranges
zero-point correction
displays the alarm threshold value
acoustic clearance of the alarm signal
switches LC display illumination on and off
(... switches off automatically after about 4
minutes)
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Operating manual
EX-TEC® SR 6,
VARIOTEC® 9-EX
103992 - 04.12.2002
3
For your safety
This product may only be used after the operating instructions have been
read and understood and only by appropriately trained operators.
This product may only be used for its designated purpose, and only in
industry and trade.
Repair work may only be carried out by appropriately trained persons.
Changes and modifications to the product may only be carried out with
the consent of Hermann Sewerin GmbH. Unauthorised modifications to
the product render the warranty null and void.
Only accessories from Hermann Sewerin GmbH may be used with this
product.
Only spare parts approved by us may be used for repairs.
Hermann Sewerin GmbH bears no liability for damage attributable to non-
compliance with these instructions. The terms of warranty and liability of
the conditions of sale and delivery of Hermann Sewerin GmbH are not
extended by the above.
We reserve the right to make technical modifications in the interests of
further development.
Please comply with general safety rules in addition to these instructions!
Symbols used:
CAUTION!
This symbol warns of dangers to the user or product.
Note:
This symbol indicates information and tips that go beyond
actual operation for the product.
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Contents page
1 EX-TEC SR 6, VARIOTEC 9-EX system
1.1 Models.......................................................................................... 7
1.2 Test certificates ............................................................................ 8
1.3 Charging equipment ..................................................................... 9
1. 4 Carrying equipment .................................................................... 10
1.5 Probe systems .............................................................................11
1.6 Test equipment........................................................................... 13
2 Safety
2. 1 Safety instructions ....................................................................... 14
3 Measuring operation
3. 1 Model overview ........................................................................... 15
3. 2 Switching on ............................................................................... 16
3.3 Illumination and contrast ............................................................. 17
3.3.1 Operating hours in measuring operation .................................... 18
3.4 Pump operation .......................................................................... 19
3. 5 Alarm signal and volume ............................................................ 20
3.5.1 Automatic alarm reactivation....................................................... 20
3. 6 Alarm threshold value ................................................................. 21
3. 7 Switching measuring ranges ...................................................... 22
3. 8 Location / gas injection / blanketing............................................ 23
3.9 Delayed-action indicator ............................................................. 24
3.10 Zero-point correction .................................................................. 25
3. 11 Gas-warning mode ..................................................................... 25
3.12 Battery alarm............................................................................... 27
3.13 Switching off............................................................................... 27
4 Charging operation
4. 1 Charging and charge maintenance............................................. 28
4.2 Spontaneous discharge ............................................................. 29
5
Contents page
5 Testing and maintenance
5. 1 Function testing, testing display accuracy.................................. 30
5.2 Test equipment........................................................................... 33
5.3 Test gases.................................................................................. 35
5. 4 Function testing .......................................................................... 36
6 Settings menu
6. 1 Setting the ppm sensor .............................................................. 38
6. 2 Setting the LEL sensor............................................................... 40
6. 3 Setting the VOL sensor.............................................................. 41
6. 4 Setting the measurement unit (%LEL range language).............. 43
6. 5 Setting 10 ppm sensitivity .......................................................... 45
6. 6 Activating the ETHANE box........................................................ 46
6.7 Interface mode ........................................................................... 46
6. 8 Checking the LC display ............................................................. 47
6. 9 Leaving the settings menu ......................................................... 47
7 Technical aspects
7.1 Technical notes ........................................................................... 48
7. 2 Technical data............................................................................. 49
7.3 Error messages.......................................................................... 52
7.4 Wearing parts ............................................................................. 54
Appendix
EC-type-examination certificates ......................................................... 55
Declarations of conformity................................................................... 60
Test report ............................................................................................ 62
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1 EX-TEC SR 6, VARIOTEC 9-EX system
1 EX-TEC SR 6, VARIOTEC 9-EX system
1.1 Models
EX-TEC SR 6 (explosion-proof)
Gas detection
above-ground gas detection for
pipeline monitoring (ppm range)
Interior installations
leak detection for pipelines in
buildings (ppm range)
Gas warning
monitoring proximity to the lower
explosion limit (%LEL range)
Location
concentration measurement in
probe holes (vol.% range)
Gas injection and blanketing
concentration measurement in
pipelines (vol.% range)
VARIOTEC 9-EX (explosion-proof)
Gas detection
above-ground gas detection for
pipeline monitoring (ppm range)
Interior installations
leak detection for pipelines in
buildings (ppm range)
Location
concentration measurement in
probe holes (vol.% range)
Gas injection and blanketing
concentration measurement in
pipelines (vol.% range)
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1 EX-TEC SR 6, VARIOTEC 9-EX system
1.2 Test certificates
Passive explosion protection
The EX-TEC SR 6 and VARIOTEC 9-EX models are explosion-proof
in accordance with European norms (CENELEC):
EC prototype test certificate: PTB 96 ATEX 2166
Identification mark: II 2 G EEx ib d IIB T3
Testing institution: Physikalische-Technische
Bundesanstalt, Brunswick
Active explosion protection
The EX-TEC SR 6 has also been tested for functional safety in the gas-
warning field:
Test report: PFG no. 41300897
Testing institution: DMT - Gesellschaft for Forschung
und Prüfung mbH, Essen
The test certificates can be found on and after page 55.
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1 EX-TEC SR 6, VARIOTEC 9-EX system
1.3 Charging equipment
The EX-TEC SR 6 and the VARIOTEC 9-EX can be charged either in
the workshop or in the standby vehicle:
HS charging adapter
to hold the detector, with a
connection socket for the plug-in
power pack or a vehicle adapter
(not shown)
230V plug-in power pack
to connect the HS HS charging
adapter to a 230-volt mains supply
12V vehicle adapter
to connect the HS charging adapter
to a 12-volt vehicle battery
24V vehicle adapter
to connect the HS charging adapter
to a 24-volt vehicle battery
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1 EX-TEC SR 6, VARIOTEC 9-EX system
1.4 Carrying equipment
TRIANGEL carrying system
a quick and easy way of carrying the detector , consisting of a carrying
strap and neck-pad
front view side view rear view
CROSS-STRAP carrying system
a comfortable way to carry the detector for longer periods, consisting
of 2 carrying straps crossed at the back
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front view side view rear view
1.5 Probe systems
- Pipe-monitoring probes -
1 EX-TEC SR 6, VARIOTEC 9-EX system
Carpet probe
for checking stable surfaces.
The sample is drawn into an
excrescence in a neoprene mat in
contact with the surface with no
extraneous emissions
- Location probes-
Bell probe,
telescopic bell probe
for checking unstable and
overgrown surfaces.
It can be used in confined spaces,
e.g. between parked cars or in front
gardens
Location probe
for measuring concentrations in
probe holes,
with a rigid rubber cone to seal off
the probe hole and
2 different probe tips (length 245
mm or 345 mm)
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1 EX-TEC SR 6, VARIOTEC 9-EX system
- Probes for use in enclosed spaces -
Floater probe
for measuring concentrations in
shafts,
floater with intake orifice and hose
connection
Divisible manual probe
for use with unenclosed pipes or
at inaccessible locations,
measuring concentrations in
containers, overall length 900 mm
- Probes for interior installations -
Flexible manual probes
for use with interior pipework,
grip with flexible swan-neck and
probe hose, overall lengths 360 mm
or 660 mm
Except with the carpet probe, a probe hose should
always be used
with a hydrophobic filter.
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1 EX-TEC SR 6, VARIOTEC 9-EX system
1.6 Test equipment
The following equipment is available for monitoring and testing the
pump power and sensitivity of the EX-TEC SR 6 and VARIOTEC 9-EX:
SPE1 and SPE3 testers
for mobile use including in-vehicle
use,
with connections for SEWERIN
test-gas bottles, flow meter,
release button and connection
hose
Test-gas bottles
for testing and adjusting display
sensitivity,
various test-gas concentrations in
1-litre bottles at pressures of about
12 bar
SPE2 tester
for non-mobile use in the
workshop, with connections for
several SEWERIN pressure
cylinders, pressure and flow meter ,
release button and connection
hoses
(not shown)
Pressure cylinders
for testing and adjusting display
sensitivity, various test-gas
concentrations in 0.4 / 2.0 / 10.0
litre steel cylinders at pressures of
100-150 bar
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2 Safety
2 Safety
2.1 Safety instructions
Always use original SEWERIN accessories with the
EX-TEC SR 6 and VARIOTEC 9-EX
Always use a probe hose with a hydrophobic filter
Observe the permissible operating temperature
range of minus 10 °C to plus 40 °C
The EX-TEC SR 6 and VARIOTEC 9-EX must not be
recharged in areas exposed to the danger of
explosion
Test gases may only be used in well-ventilated
spaces
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The EX-TEC SR 6 and VARIOTEC 9-EX satisfy the
limits of the EMV regulation. When using it near
(mobile) radio equipment please also follow the
instructions in the manuals for that equipment
3 Measuring operation
3.1 Model overview
Fold out the illustration inside the front cover
Item description function
1 alarm lamp optical warning on:
breaching alarm thresholds
display of error messages
2 LC display display of:
gas concentrations
menu items
operating conditions
error messages
3 Measuring operation
3 probe connection connection for:
probe hose
tester
4 keypad detector operation
5 attachment for carrying systems:
Triangel
cross-strap
6 outlet for the gas sample
7 buzzer acoustic warning on:
reaching alarm thresholds
display of error messageses
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3 Measuring operation
3.2 Switching on
hold the on/off button down for
about 2 seconds
or, on the SR 6 only, hold the gas-
warning button down for about
2 seconds to start the detector in
gas-warning mode (see p. 25 ff.)
the optical and acoustic control
signals (items 1 and 7) operate
for about 2 seconds
available operating hours are
displayed in the form of bars (e.g.
5 hours)
the integral pump runs at full power
the software version number
(e.g. 2.0) and detector type
(SR 6) are displayed
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3.3 Illumination and contrast
3 Measuring operation
wait for the zero point to establish
itself in fresh air (approx. 1 minute):
display: 0 PPM
(after flashing stops)
pressing the light button
switches the LC DISPLAY
illumination on and off
the illumination automatically
switches off approx. 4 minutes
after being switched on
simultaneously pressing the light
button
and a cursor button
increases or reduces the contrast
of the LC display
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3 Measuring operation
3.3.1
Operating hours in measuring operation
simultaneously pressing both
this display (battery symbol and
cursor buttons in measuring
operation displays the operating
hours still available (e.g. 5 hours)
bars) disappears automatically
after about 10 seconds
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