Sewerin HS 680, HS 650, HS 610, HS 660 User Manual
EX-TEC® HS 680/660/650/610
03.06.2019 a – 105734 – en
Operating Instructions
CH4
AL4
VOL%
CH4
0,1
1,0
0
10 100 10
0.90
EX-TEC® HS 680/660/650/610
Connector
Supporting bracket
Buzzer
USB port
ON/OFF key
Connection for
power supply
Fig. 1: EX-TEC HS 680 device overview
Bar display
Signal light
Gas input
Display
Function keys
Jog dial
Connector
Selected
application
Capacity
disposable battery/
rechargeable battery
Fig. 2: EX-TEC HS 680 display
Measurement value
Alarm
Unit
Gas type
Current assignment of
function keys F1 – F3
Esc
0
Display symbols
General
Menu Fault
OK Carry out device inspection
Cancel
Buzzer o
Take sample Purge
Save Stop measurement
Delete Information
Capacity disposable battery/rechargeable battery
Applications
Inspection above ground Structure
Tab (jump to next input
eld)
Set zero point
Open stored comment
Open stored inspector
Plants Gas measuring
Measuring in bar holes Warning %LEL
Ethane analysis Warning ExTox
Information about this document
The warnings and notes in this document mean the following:
DANGER!
A
A
A
Risk of personal injury. Will result in serious injury or
death.
WARNING!
Risk of personal injury. Can result in serious injury or
death.
CAUTION!
Risk of personal injury. Can result in injury or a risk to
health.
Notice!
Risk of damage to property.
Note:
Tips and important information.
Numbered lists (numbers, letters) are used for:
● Instructions that must be followed in a certain order
Lists with bullet points (point, dash) are used for:
● Lists
● Instructions that only involve one step
Numbers between forward slashes /.../ refer to the referenced documents.
Contents Page
1 General .....................................................................................1
1.1 Warranty ....................................................................................1
1.2 Purpose .....................................................................................2
1.3 Intended use .............................................................................3
1.4 General safety information ........................................................4
1.5 Allocation of tasks to applications .............................................5
2 Features ...................................................................................6
2.1 Visual and audible signals .........................................................7
2.2 Sensors .....................................................................................8
2.3 Explosion protection .................................................................. 9
2.3.1 Passive explosion protection ..................................................9
2.3.2 Active explosion protection ..................................................10
3 Operation ............................................................................... 11
3.1 General information on operation ............................................ 11
3.1.1 Keys and jog dial .................................................................. 11
3.1.2 Selecting/exiting menus and menu items .............................12
3.1.3 Switching the device on .......................................................12
3.1.4 Selecting/changing the application .......................................14
3.1.5 Dierences between measuring mode and settings mode ..15
3.2 Measuring mode .....................................................................15
3.2.1 Accessing the menu (measuring mode menu structure) ......16
3.2.2 Zero point ............................................................................. 17
3.2.3 Inspection above ground ...................................................... 18
3.2.4 Plants ...................................................................................19
3.2.5 Measuring in bar holes ......................................................... 20
3.2.6 Ethane analysis ................................................................... 21
3.2.6.1 General information on ethane analysis............................22
3.2.6.2 Purging the detector .......................................................... 24
3.2.6.3 Carrying out an ethane analysis........................................25
3.2.6.4 Evaluating an ethane analysis ..........................................26
3.2.7 Structure ...............................................................................29
3.2.8 Gas measuring ..................................................................... 30
3.2.9 Warning %LEL ....................................................................31
3.2.10 Warning ExTox .....................................................................32
3.2.11 Settings ................................................................................33
3.2.12 Start/stop/save a measurement ...........................................33
3.2.13 Protocols ..............................................................................35
I
Contents Page
3.2.14 Device inspection ................................................................. 36
3.2.15 Gas type CxHy ..................................................................... 36
3.2.16 Device information ...............................................................37
3.3 Settings ...................................................................................37
3.3.1 Opening settings ..................................................................37
3.3.2 Settings menu structure .......................................................39
3.3.3 Adjustment ...........................................................................40
3.3.4 System .................................................................................42
3.3.5 Alarms ..................................................................................44
3.3.6 Date/time .............................................................................. 44
3.3.7 Memory ................................................................................44
4 Power supply .........................................................................46
4.1 Suitable disposable/rechargeable battery types .....................46
4.2 Operation with rechargeable batteries ....................................47
4.2.1 Charging ............................................................................... 48
4.2.2 Rechargeable battery maintenance .....................................49
4.3 Battery alarm ........................................................................... 49
4.4 Replacing disposable/rechargeable batteries .........................50
5 Maintenance ..........................................................................51
5.1 Device inspection ....................................................................51
5.1.1 General information on the device inspection ...................... 51
5.1.1.1 Scope ................................................................................ 51
5.1.1.2 Frequency .........................................................................52
5.1.1.3 Documentation .................................................................. 53
5.1.1.4 Integrated device inspection .............................................53
5.1.1.5 Order .................................................................................54
5.1.1.6 Test gases for the device inspection ................................. 54
5.1.2 Performing the device inspection ......................................... 56
5.1.2.1 Accessing the device inspection ....................................... 56
5.1.2.2 Concluding the device inspection......................................57
5.1.3 Testing the general status ....................................................58
5.1.3.1 Housing ............................................................................. 58
5.1.3.2 Signals ..............................................................................59
5.1.3.3 Probe.................................................................................59
5.1.3.4 Filter ..................................................................................59
5.1.3.5 Pump .................................................................................59
5.1.4 Testing indication accuracy with supply of fresh air .............60
5.1.5 Testing indication accuracy with supply of test gas .............. 60
II
Contents Page
5.2 Adjustment ..............................................................................62
5.2.1 Scope ...................................................................................62
5.2.2 Test gases for the adjustment ..............................................63
5.2.3 Special features of adjustment with gas mixture .................. 64
5.2.4 Preparation ........................................................................... 65
5.2.5 Performing the adjustment ................................................... 65
5.2.5.1 Adjusting the zero point.....................................................66
5.2.5.2 Adjusting the sensitivity ..................................................... 66
5.2.6 Carrying out an oxygen adjustment .....................................68
5.2.6.1 Adjusting the zero point for oxygen ................................... 68
5.2.6.2 Adjusting the sensitivity for oxygen ................................... 69
5.3 Servicing .................................................................................69
6 Faults ......................................................................................70
7 Appendix ................................................................................71
7.1 Specications and permitted operating conditions .................. 71
7.2 Alarms .....................................................................................72
7.2.1 Features ...............................................................................72
7.2.2 Occupational exposure limits (OEL) and excess factors
(STEL and LTEL) .................................................................. 75
7.2.3 Alarm thresholds (factory settings) .......................................75
7.2.4 Setting ranges for gas types ................................................76
7.3 Limit values for the device inspection .....................................77
7.4 Memory capacity .....................................................................78
7.5 Sensors ...................................................................................79
7.5.1 Infrared sensors (IR) ............................................................79
7.5.1.1 Methane CH4, propane C3H8, butane C4H10 for
Warning %LEL and Warning ExTox ..................................79
7.5.1.2 Methane CH4, propane C3H8 for gas measuring ...............80
7.5.1.3 Carbon dioxide CO2 for warning ExTox ............................. 80
7.5.1.4 Carbon dioxide CO2 for measuring in bar holes ................ 81
7.5.2 Electrochemical sensors (EC) .............................................. 81
7.5.2.1 Oxygen O2 ........................................................................ 81
7.5.2.2 Carbon monoxide CO .......................................................82
7.5.2.3 Hydrogen sulphide H2S ..................................................... 83
7.5.3 Gas-sensitive semiconductor ............................................... 83
7.6 Technical information ..............................................................84
7.6.1 Identication sticker (back of device) ...................................84
7.6.2 Cleaning ............................................................................... 84
III
Contents Page
7.6.3 Electrostatic charge ..............................................................84
7.7 Accessories and consumables ................................................ 85
7.8 Declaration of conformity ........................................................86
7.9 Inspection protocols ................................................................87
7.9.1 Test with individual gases .....................................................87
7.9.2 Test with gas mixture ............................................................89
7.10 Advice on disposal ..................................................................91
7.11 Terminology and abbreviations ...............................................92
7.12 Referenced documents ...........................................................93
8 Index .......................................................................................94
IV
1 General
1.1 Warranty
The following instructions must be complied with in order for any
warranty to be applicable regarding functionality and safe operation of this equipment. This product must only be commissioned
by qualied professionals who are familiar with the legal requirements (Germany: DVGW).
● Read these operating instructions prior to operating the product.
● Use the product only as intended.
● Repairs and maintenance must only be carried out by special-
ist technicians or other suitably trained personnel. Only spare
parts approved by Hermann Sewerin GmbH may be used when
performing repairs.
● Use only suitable battery types, otherwise the device will not
be explosion-proof.
● Changes or modications to this product may only be carried
out with the approval of Hermann Sewerin GmbH.
● Use only Hermann Sewerin GmbH accessories for the product.
Hermann Sewerin GmbH shall not be liable for damages resulting
from the non-observance of this information. The warranty con-
ditions of the General Terms and Conditions (AGB) of Hermann
Sewerin GmbH are not aected by this information.
In addition to the warnings and other information in these Operating Instructions, always observe the generally applicable safety
and accident prevention regulations.
The manufacturer reserves the right to make technical changes.
1 General
1
1 General
1.2 Purpose
The EX-TEC HS 680 and the models 660, 650 and 610 are hand-
held measuring devices which can be used for all gas pipeline
testing applications.
The devices are designed for professional industrial use and
require the necessary specialist knowledge for working in gas
pipelines. Sample applications are described in /3/.
All devices are tted with infrared sensors for measuring hydrocarbons CXHY and carbon dioxide CO2 as standard. Models 680
and 660 also feature a gas-sensitive semiconductor.
Models 680 and 660 can be optionally tted with a detector for
ethane analysis to help you safely distinguish between natural
gas and swamp gas.
All devices can also be individually tted with electrochemical
sensors.
The infrared sensors operate on the principle of absorption via
infrared-active gases, and the electrochemical sensors operate
on the electrochemical cell principle. The gas-sensitive semiconductor reacts to changes in conductivity brought about by
reducible gases.
Note:
These operating instructions describe the EX-TEC HS 680 with
all additional equipment (rmware version 2.XXX). All descriptions refer to the device as delivered (factory settings) and apply
to all device versions. The manufacturer reserves the right to
make changes.
2
1.3 Intended use
This device is intended for professional residential and commer-
cial use including small rms and commercial operations. The
appropriate specialist knowledge is required to operate the device.
The device may only be used to measure the following gases
(depending on the device model and additional equipment):
● Methane CH4/propane C3H8/butane C4H
● Carbon dioxide CO
● Oxygen O
● Hydrogen sulphide H2S
● Carbon monoxide CO
The device must not be used for:
● Gas analysis of technical processes
● Monitoring liquids
The device can be used up to a temperature of 40 ºC. However,
high temperatures reduce the lifetime of the sensors and rechargeable batteries.
If a device with an electrochemical sensor is exposed to gas
concentrations above the measuring range limit, this can reduce
the lifetime of the sensor.
1 General
10
2
2
3
1 General
1.4 General safety information
● The device has been tested to ensure that it is explosion-proof
in accordance with European standards (CENELEC).
● The device must only be switched on with fresh air.
● Do not use this device in oxygen-enriched atmospheres, oth-
erwise it will not be explosion-proof.
● Only probe hoses with a hydrophobic lter may be used.
Exception:
If the probe has a built-in hydrophobic lter, the hose does not
require any other lters.
● The device must only be tested and adjusted with test gases
in well ventilated rooms or in the open air. Test gases must be
handled in a professional manner.
● Always carry out a device inspection (see section 5.1) after
the device has suered an impact (for example, if dropped
accidentally).
● The device complies with the limits of the EMC directive. Always
observe the information in the manuals of (mobile) radio equipment when using the device close to (mobile) radio equipment.
Note:
Follow the advice regarding explosion protection (see section 2.3).
4
1.5 Allocation of tasks to applications
The table is designed to help you decide which application to
choose for which activity (in accordance with /3/).
1 General
Gas measuring
Inspection
above ground
– Ground
– Gas line
e.g. when commissioning/decommissioning gas systems)
– Purging (to demonstrate purity or absence of gas,
– Possible leakage points
Warning %LEL
Warning ExTox
Measuring in
bar holes
– Determining gas dispersion (detection limit)
area monitoring
● Distinguishing between natural gas and swamp gas Ethane analysis
● Warning against explosive gas concentrations through work
monitoring
● Warning against explosive and toxic gases through work area
– Classify leaks
Plants
– Locating a probable gas escape (repair point)
– Preventing possible dangers
● Measuring very low gas concentrations
Structure
● Locating the source of gas
● Finding leaks
● Locating the source of gas
● Finding leaks at internal connections
Location Activity Application
Gas lines, gas systems, … ● Measuring the gas concentration
Buried gas lines ● Measuring very low gas concentrations:
Gas lines, gas systems, …
in houses, enclosed spaces
and shafts
In the ground ● Measuring the gas concentration to:
Poorly accessible gas pipes,
systems
In the house ● Measuring very low gas concentrations
5
2 Features
2 Features
The device comes in four models:
EX-TEC HS 680
EX-TEC HS 660
EX-TEC HS 650
EX-TEC HS 610
The models are suitable for the following applications:
Application HS 680 HS 660 HS 650 HS 610
Inspection above ground × ×
Measuring in bar holes
O
2
×
○
×
○
×
○
Plants × ×
Structure
CO
×
○
×
○
Gas measuring × × × ×
Warning %LEL × ×
Warning ExTox
CO
H2S
O
2
×
○
○
○
×
○
○
○
Ethane analysis ○ ○
× standard ○ optional
×
○
6
2.1 Visual and audible signals
The device features two alarms:
● Signal light on top of device (visual signal)
● Buzzer on side of device (audible signal)
The signals indicate alarms and faults. The device also emits
signals when it is switched on and o.
If this symbol appears on the display, the audible signal
can be switched o.
When an audible signal has been switched o it cannot
be switched back on while the concentration level remains above the alarm threshold.
This symbol appears at the top left of the display as soon
as the audible signal has been switched o. It disappears
automatically if the level falls below the alarm threshold.
Operating signal
When using the Warning %LEL and Warning ExTox applications,
the device emits a visual and audible signal at regular intervals.
This indicates that the device is working properly.
2 Features
Alarm
The device can monitor several gases at the same time. If the
measured gas concentration of one or more gases exceeds spec-
ied limit values (alarm thresholds) the device gives a warning. It
emits both audible and visual signals, which are clearly dierent
from the operating signal.
WARNING! Risk to life from dangerous gas concen-
A
There is detailed information on alarms in section 7.2.
trations
An alarm always indicates danger.
● Take all necessary measures for your own safety and
the safety of others immediately.
7
2 Features
2.2 Sensors
The device features three types of sensor:
● Gas-sensitive semiconductor (SC)
● Infrared sensor (IR)
● Electrochemical sensor (EC)
Application Gas Measuring range Sensors
Inspection above
ground
Plants CH41 ppm – 100 % vol. SC, IR
Measuring in bar
holes
Ethane analysis CH4--- Gas chroma-
Structure CH41 ppm – 100 % vol. SC, IR
CH41 ppm – 10 % vol. SC, IR
CH40.0 – 100 % vol. IR
CO20 – 30 % vol. IR
O
0 – 25 % vol. EC
2
C2H
C3H
6
8
tograph, SC
CO 0 – 500 ppm EC
Gas measuring CH40.0 – 100 % vol. IR
Warning %LEL and
warning ExTox
CH40 – 100% LEL IR
CO 0 – 500 ppm EC
CO20 – 5 % vol. IR
O
0 – 25 % vol. EC
2
H2S 0 – 100 ppm EC
8
2.3 Explosion protection
2.3.1 Passive explosion protection
The device is assigned to the following explosion-proof groups:
2 Features
Explosion-proof
group
II2G Ex d e ib IIB T4 Gb – Methane CH
For the following
atmospheres
– Propane C3H
– Butane C4H
4
8
10
– Hydrogen sulphide H2S
When
using
Device
without
carrying
bag TG8
– Carbon monoxide CO
II2G Ex d e ib IIC T4 Gb – Methane CH
– Propane C3H
– Butane C4H
– Hydrogen sulphide H2S
4
8
10
Device
with
carrying
bag TG8
– Carbon monoxide CO
– Hydrogen H
2
EC type-examination certicate: TÜV 07 ATEX 553353 X
DANGER! Risk of explosion from sparks
A
● Only ever open the battery compartment outside of
explosive areas.
● Only ever charge the device outside of explosive areas.
● Only use the USB port outside of explosive areas.
● Use only suitable battery types.
● When working with hydrogen, always use the TG8 car-
rying bag for the device.
9
2 Features
2.3.2 Active explosion protection
The functional safety test applies to:
Applications: Warning %LEL
Gas types: Measuring range:
– Methane CH
– Propane C3H
4
8
Gases: Measuring range: As per:
– Oxygen O
– Carbon dioxide CO
2
2
– Carbon monoxide CO 0 – 500 ppm CO /5/
– Hydrogen sulphide H2S 0 – 100 ppm /5/
Tested accessories: – Test set SPE VOL
Warning ExTox
0 – 100% LEL
0 – 100% LEL
0 – 25 % O
0 – 5 % CO
2
2
– Flexible hand probe, 1 m
– Floating probe 2 m / 6 m
/7/
/5/
10
Type examination
Testing institute: DEKRA EXAM GmbH
Certicates: PFG 08 G 002 X
BVS 09 ATEX G 001 X
The following points were not part of the type examination:
● Saving measurement data (see section 3.2.12)
● Saving protocols from the integrated device inspection (see
section 5.1.1.4)
● Disposable alkaline batteries for the power supply (see sec-
tion 4.1)
3 Operation
3.1 General information on operation
3.1.1 Keys and jog dial
The ON/OFF key is the only control on the device that does not
change its function.
When switched on, the device is operated using the jog dial and
function keys to navigate the display.
Control Action Function
ON/OFF key Press ● Switches the device on
● Switches the device o
Function keys
F1, F2, F3
Jog dial Turn ● Selects functions, settings,
Press ● Variable
● As indicated on the display at
the bottom of the screen
● Function keys may also have
no function assigned in some
cases
measurement data, etc.
● Modies values
Press ● Opens the next program lev-
el (for example, menu item,
function, measurement data,
selectable values)
● Accepts values
3 Operation
11
3 Operation
3.1.2 Selecting/exiting menus and menu items
Functions, applications and settings etc. are selected via the
main menu (for short: Menu). This menu has submenus and
menu items. Refer to section 3.2.1 for information on accessing
the menu.
Selecting submenus/menu items
Submenus and menu items are selected and opened using the
jog dial and/or the function keys.
In measuring mode the name of the selected application is in-
dicated by the symbol at the top left of the display. You can nd
detailed information on selecting and switching applications in
section 3.1.4.
Exiting menus/menu items
There are generally two ways to exit open menus/menu items
and return to the next level up:
● Press Esc
● Select Back from the menu
3.1.3 Switching the device on
Note:
Always switch the device on with fresh air.
1. Press the ON/OFF key. The device switches on.
The switching on process involves an internal check.
Process Test purpose
Buzzer emits audible
signal.
Signal light gives visual
signal.
Display is inverted. Are there pixels missing from the
12
Is the audible signal working?
Is the visual signal working?
display?
3 Operation
The start screen appears on the display.
Display:
– Device type: EX-TEC HS 680
®
EX-TEC HS 680
– User:
Frank Smith
Frank Smith
City Council
Leakage Delivery
V2.000
Fig. 3: Start screen
17.09.2018
13:02
City Council
Leakage Delivery
– Firmware version: V2.000
– Date and time
– Capacity disposable battery/
rechargeable battery
The splash screen for the application set under Autostart
appears (see section 3.3.4).
Display:
CH4
– Gas type: CH
4
– Application as symbol (top left)
Inspection above ground
0 PPM ...10 VOL%
AL 4 3 PPM
and text: Inspection above
ground
– Measuring range:
0 ppm ... 10 % vol.
Fig. 4: Splash screen for
Inspection above
ground application
– Alarm threshold: AL4, 3 ppm
– Symbol for next application that
can be selected via function
key F3: Measuring in bar holes
The device switches to measuring mode. The device warms
up. The reading ashes.
While the device is warming up, the prompt Add fresh air! is
displayed as a reminder.
2. Make sure the device is actually drawing in fresh air. Change
its location if necessary.
3. Wait until the reading stops ashing.
The device is ready for use.
13
3 Operation
0
10 100 10
Fig. 5: Inspection above ground measuring mode
WARNING! Risk to life from using miscalibrated or
A
3.1.4 Selecting/changing the application
A
faulty devices
Gas warning devices must be regularly checked before
use.
WARNING! Risk to life from using miscalibrated or
faulty devices
If the device is used as a gas warning instrument (Warning %LEL and Warning ExTox applications), it must be
regularly checked before use.
0,1
1,0
PPM
CH4
0
● Carry out a device inspection each day before starting
work.
● Carry out a device inspection each day before starting
work.
Display:
– Current reading: zero when
device is switched on with fresh
air
14
Note:
You may only switch applications when the device is drawing in
fresh air.
The current application is indicated by the symbol at the top left
of the display. The symbol at the bottom right shows the next application that can be selected via function key F3. You can specify
3 Operation
which application is activated rst when the device is switched on
in the Settings under System (see section 3.3.4).
● Press Menu. Select the menu item for the application you
want to use.
OR
a) Press function key F3. The device switches to the next ap-
plication.
b) Repeat until the symbol for the application you want to use
appears at the top left.
3.1.5 Dierences between measuring mode and settings mode
The device is operated in two modes:
● Measuring mode (see section 3.2)
Measurements are taken in measuring mode. All functions
needed to take readings can be accessed from one menu.
● Settings (see section 3.3)
The device settings can be changed in settings mode. Information about the device can also be retrieved. Measurements
cannot be taken in settings mode.
Settings are accessed via the menu in measuring mode. The
settings are access-protected by a PIN code.
WARNING!
A
3.2 Measuring mode
When switched on the device is in measuring mode. In meas-
uring mode, the current readings are always displayed (g. 5).
Risk to life due to absence of alarm
The device only issues alarms in measuring mode. As
soon you open the menu, alarms are no longer triggered.
● Only adjust settings in areas where there is no risk of
explosion and where there is no toxic or low-oxygen
atmosphere.
15
3 Operation
Zero point
Exit
3.2.1 Accessing the menu (measuring mode menu structure)
Depending on the application, the measurement will have to be
saved or started and then stopped (see section 3.2.12).
WARNING!
A
Risk to life from operating signal failure
When the device is used as a gas warning device (Warning %LEL and Warning ExTox applications), an operat-
ing signal must always sound in measuring mode. If the
operating signal does not sound, the device is not safe
to operate.
● Stop using the device immediately.
● Leave explosive areas or areas with a toxic or low-ox-
ygen atmosphere immediately.
In measuring mode F1 can be used to access the Menu.
Inspection above ground
Plants
Measuring in bar holes
Ethane analysis
Structure
Gas measuring
Warning %LEL
Warning ExTox
Settings
Start measurement
Protocol
Purge
Device inspection
Gas type CxHy
Device information
Fig. 6: Menu with submenus (menu items)
16
Once you have started a measurement Start measurement in
the menu becomes Stop measurement. In some applications
this menu item is called Save measurement.
You can nd detailed information on starting, stopping and saving
measurements in section 3.2.12.
Protocol does not appear in the menu until you save a protocol
for the rst time.
Purging only appears in the menu in the ethane analysis application.
Gas type CxHy only appears in the menu if the device is equipped
for at least one further gas type apart from methane CH4.
3.2.2 Zero point
The zero point can be manually set under Zero point in the menu.
This is only necessary if the displayed fresh air measurement is
not zero after the end of the warm-up period.
Gas Content in fresh air Correct zero point on device
CH4 0 % vol. 0.0 % vol.
CO 0 ppm 0 ppm
CO20.04 % vol. 0.04 % vol.
O2 20.9 % vol. 20.9 % vol.
3 Operation
The manual zero point setting is not saved. The zero point can be
corrected by adjustment as often as zero point deviations occur
(see section 5.2).
Requirements for correct setting of the zero point
● Device has been switched on with fresh air.
● Device continues to draw in fresh air.
Setting zero point (manual zero point setting)
1. Press Menu.
2. Select Zero point menu item. The values are automatically
adjusted. The device returns to measuring mode.
17
3 Operation
The Setting zero point function can also be accessed using the
relevant symbol in the Inspection above ground, Plants and
Structure applications.
3.2.3 Inspection above ground
The measuring mode can be changed for the Inspection above
ground application via this menu item.
Area of use
– Measuring minimal gas concentrations above the ground, the
gas pipe or possible leakage points
Symbol
Unit
– ppm (parts per million)
– % vol.
Measuring range
18
Gas-sensitive semiconductor 0 to 10,000 ppm
Infrared sensor 1 to 10 % vol.
Measurement data display
0
10 100 10
0,1
1,0
– Digit, for example,
0.90 % vol. CH
– Bar graph with quasi-loga-
AL4
0.90
Fig. 7: Inspection above ground measuring mode
VOL%
CH4
rithmic scale
4
3.2.4 Plants
The measuring mode can be changed for the Plants application
via this menu item.
Area of use
– Measuring minimal gas concentrations in freely accessible
gas pipes and systems (e.g. gas pipes on bridges, above-
ground inverted siphons, biogas plants)
– Locating the source of gas
– Finding leaks
Symbol
Unit
– ppm (parts per million)
– % vol.
Measuring range
3 Operation
Gas-sensitive semiconductor 0 to 10,000 ppm
Infrared sensor 0.1 to 100 % vol.
Measurement data display
0,1
100
0
10
10
1,0
100
– Digit, for example,
8 ppm CH
4
– Bar graph with quasi-loga-
rithmic scale
PPM
8
CH4
Fig. 8: Plants measuring mode
19
3 Operation
3.2.5 Measuring in bar holes
The measuring mode can be changed for the Measuring in bar
holes application via this menu item.
Area of use
– Measuring gas dispersal in the ground
– Locating the possible leakage point and classifying the leak
Symbol
Unit
– % vol.
Measuring range
Infrared sensor
0.0 to 100 % vol.
(hydrocarbons CXHY)
Infrared sensor
0.0 to 30 % vol.
(carbon dioxide CO2)
Electrochemical sensor
0.0 to 25.0 % vol.
(oxygen O2)
Measurement data display
– Digit, for example,
1,0
0
20.9
10
0
VOL% CO2
VOL% O2
100
0 % vol. CO
20.9 % vol. O2
0.60 % vol. CH
0.60
Fig. 9: Measuring in bar holes measuring mode
VOL%
CH4
– Bar display with quasi-logarith-
mic scale (for CH4)
2
4
20
3.2.6 Ethane analysis
Selecting Ethane analysis from the menu opens an overview of
the gases that can be detected. The device automatically returns
to measuring mode.
Note:
The ethane analysis cannot be started with the Ethane analysis
menu item.
Information about carrying out the ethane analysis can be found
in section 3.2.6.3.
Area of use
– Distinguishing between natural gas and swamp gas
Symbol
Unit
3 Operation
– ppm (parts per million)
– % vol.
Measuring range
Infrared sensor
(hydrocarbons CXHY)
Infrared sensor
(carbon dioxide CO2)
Electrochemical sensor
(oxygen O2)
Gas chromatograph /
gas-sensitive semiconductor
0.0 to 100 % vol.
0 to 30 % vol.
0.0 to 25.0 % vol.
1 ppm to 1.2 % vol.
21
3 Operation
Measurement data display
0,1
0
100
10
1,0
20.9
10
VOL% CO2
0
VOL% O2
100
0 % vol. CO2
20.9 % vol. O2
9.0 % vol. CxH
– Digit, for example,
9.0
Fig. 10: Ethane analysis measuring mode
VOL%
CxHy
– Bar display with quasi-logarith-
mic scale (for CxHy)
3.2.6.1 General information on ethane analysis
Ethane analysis is used to demonstrate the presence of natural
gas and to distinguish between natural gas and swamp gas.
This analysis utilises the fact that natural gas contains ethane,
but swamp gas does not. Thus, if ethane is detected, it can be
concluded that natural gas is present.
Note:
Ask the network operator about the composition of natural gas.
Request an analysis certicate.
Ethane can denitely be detected in natural gas at a minimum
concentration of 1 % vol. If the concentration of ethane in natural
gas is less than 0.5 % vol., the gas cannot be detected. If the
concentration falls between these two values, the analysis can
be carried out, but the result must be assessed subsequently.
During the ethane analysis, the gas sample is always analysed
for the presence of the following three gases:
● Methane CH
● Ethane C2H
● Propane C3H
4
6
8
Y
22
Requirement
The ethane analysis only works if the gas sample exhibits a spe-
cic concentration.
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