SENKO SP12C7 User manual

MODEL: SP12C7
(Portable 4 gas detector)
Operating Manual

Guarantee and Repair
Guarantee
and
Repair
Senko Co., Ltd. guarantees the products of SP series for 24 months from the
shipping date and repairs or replaces the defected product during warranty
period at no cost. Nevertheless, Senko is not responsible for the following
cases and would not repair or replace the product at no cost, such cases as the
product has been purchased through the route that Senko does not approve or
product
has
been
purchased
through
the
route
that
Senko
does
not
approve
,
or
as the product has been damaged or deformed mechanically by misuse of the
user, or as the product has not been calibrated or replaced the parts according
to processes in the operating manual.
In the event that any defect or issue of the product occurred during warranty
period, Senko will cover all the expenses except transportation fee. After the
period of warranty the expenses of repair or replacement of the product and
period
of
warranty
,
the
expenses
of
repair
or
replacement
of
the
product
and
transportation will be in principle borne by the user. Senko will not be
responsible for any indirect occurrence or accident and/or damage during the
use of the product, and the guarantee shall be limited to the replacement of
parts and product. The guarantee is applied only to the users who purchased
the product at Senko’s authorized dealers or agents, and the guarantied repair is
to be
p
erformed b
y
the ex
p
ert en
g
ineers of Senko’s authorized aftercare center.
pypg
Introduction
SP12C7 is 4 Gases Alarm Detector that is required to protect users’ safety at
dangerous work environments where an explosion accident can occur. The
apparatus can indicate simultaneously the concentration of 4 gases (Oxygen,
Inflammable Gas, Carbon Monoxide and Hydrogen Sulfide) on a digital LCD
monitor, and the methods of operation and calibration are easy and convenient.
Thi i t t l t t l th l i t t t d
Thi
s
i
ns
t
rumen
t
a
l
er
t
s accura
t
e
l
y
th
e a
l
arm c
i
rcums
t
ances
t
o opera
t
ors an
d
workers for their safety with its functions of loud alarm sound and vibration,
when higher gas concentration than normality is detected. Besides, it is
available for users to check upon occasion and adjust the value of alarm to the
work environment on demand, since it has the function of indicating minimal
and maximal concentration of the gases. It is also possible to prevent in
advance workers from the danger of exposing for a definite period of time to
advance
workers
from
the
danger
of
exposing
for
a
definite
period
of
time
to
such toxic gases as Hydrogen Sulfide (H2S) and Carbon Monoxide (CO) by its
function of STEL (Short Term Exposure Limit) and TWA (Time Weighted Average).
1

Contents of Operating Manual
Product Specification ---------------------------------- 3
Names and Functions of Exterior --------------------- 4
Start of O
p
eration -------------------------------------- 5
p
Operation Method ------------------------------------- 6
Calibration ---------------------------------------------- 7
Method of Alarm Set and Display ------------------- 10
Applicable Battery and External Pump ------------- 15
B&S l
16
B
attery
&
S
ensor rep
l
acement ------------------------
16
Operation Flow Chart --------------------------------- 17
Notice for User -----------------------------------------18
2

Product Specification
MODEL SP12C7
Detecting Gas O2 CO H2S EX
Detecting Range 0~30% 0~500ppm
0~1,000ppm
0~100ppm
0~200ppm 0~100%LEL
Product
Specification
Sensor Type Galvanic Electrochemical Electrochemical Catalytic
Sampling Method Diffusion
Display Digital LCD
Audible Alarm 90dB
Visual
Alarm
Red
LED & White
back light
Visual
Alarm
Red
LED
&
White
back
light
Vibrator Alarm Vibrator
Power Alkaline battery 2ea, Rechargeable NI-MH battery pack
Operating
temp. & Humi. -20℃ ~ +50℃, : 10% ~ 95% RH (non-condensing)
Explosion
proof
EEx
ia
IIC T4 / IP67
Explosion
proof
EEx
ia
IIC
T4
/
IP67
Case Clear polycarbonate with thermal-plasticelastic (TPE) overmold.
Standard
Accessories Belt Clip, Charger
Option Sampling pump
Dimensions
54mm(W) x 135mm(H) x36.5 mm(D)
Dimensions
54mm(W)
x
135mm(H)
x36.5
mm(D)
Weight 240g
Specification of External Pump (Optional)
Power AA size Alkaline batter
y
1ea
y
Operating time More than 5 hours
Operating temp. & Humi. -20°C ~ + 50°C, 0 to 95% RH
Sampling flowrate 0.5 liter / min
Self Checking Low flow alarm, Low battery alarm (Red LED)
Di i
34 (W) 270 (H) 47 (D)
Di
mens
i
ons
34
mm
(W)
x
270
mm
(H)
x
47
mm
(D)
Weight 200g (with battery)
3

Names and Functions of Exterior
1
2
3
6
7
8
4
5
9
10
1. Gas sensor
2. Buzzer
3. LCD display
4. On/Off Key
5. Key
6. Alarm LED
7. Fastening clip
8. Type label
9. Charging contacts
10. Battery pack
LCD display symbols
4

Instrument Power
-
On
Start of Operation
Press Power key for 3 seconds, and power is turned on displaying 3, 2, and
1 in order on the monitor. (Power won’t turned on, if pressing the Power
key is stopped before 3 seconds)
Afterwards during the instrument is being stabilized, it displays consecutively A1 & A2 set values of
LELG A1&A2tl fO2G A1tl fCOG A2tl fCOG tl f
Instrument
Power
-
On
LEL
G
as,
A1
&
A2
se
t
va
l
ues o
f
O2
G
as,
A1
se
t
va
l
ue o
f
CO
G
as,
A2
se
t
va
l
ue o
f
CO
G
as, se
t
va
l
ues o
f
STEL & TWA, A1 set value of H2S Gas, A2 set value of H2S Gas, and set values of STEL & TWA on
the monitor.
When the instrument is stabilized after the display of the above set values, it converts to Gas
Detection Mode displaying the mark At normal status, the mark disappears after 30
seconds, and the concentration of the gas detected of the moment is indicated. In the event that
stabilization of the instrument fails, it would not convert to Gas Detection Mode, blinking the
mark
with alarm sound In this case calibration of the sensor or aftercare of the instrument is
V
X
V
mark
with
alarm
sound
.
In
this
case
,
calibration
of
the
sensor
or
aftercare
of
the
instrument
is
required.
X
Instrument Power-Off
Success Fail
Press Arrow key for 3 seconds at the state of pushing Power Key
simultaneously, and power is turned off displaying 3, 2, and 1 in order on
the monitor with turning on LED Lamp and alarm.
Caution: Appropriate calibration of the instrument is always required prior to the operation at work
sites Make sure if the instrument makes the proper detection response to the pertinent gas and if
sites
.
Make
sure
if
the
instrument
makes
the
proper
detection
response
to
the
pertinent
gas
and
if
the region of the gas detection is not blocked with foreign materials that interfere with the gas
detection
LCD Back Light
At the state of Gas Detection Mode indicating the concentration of 4 kinds of
gases simultaneously, LED Backlight is turned on by the short press on Arrow
kd dffb blh
k
ey, an
d
it is turne
d
o
ff
b
y pressing again once more. It ena
bl
es t
h
e operator
to view the measured value even at dark atmosphere. Backlight will be
automatically turned off after 10 seconds unless the button works.
5

Detection Mode The instrument is converted to Gas Measure Mode as below, when power
is turned on. Gas Measure Mode indicates the concentration of gas and
the remained capacity of battery on LCD, and it displays the gas
tti fO b%Ifl blG b%LELH2S dCO
Operation Method
concen
t
ra
ti
on o
f
O
xygen
b
y
%
,
I
n
fl
amma
bl
e
G
as
b
y
%LEL
,
H2S
an
d
CO
Gas by ppm units.
In the event that the concentration of the specific gas changes, it
indicates the value of concentration in real-time. If it exceeds A1 or A2
Alarm standard (or STEL / TWA), the measured value and A1 or A2 (icon
in case of STEL / TWA) is displayed at one second interval in turn
alerting by alarm sound and vibration.
As of A1, the instrument program will be converted to the original condition and starts the
operation, when the concentration value of the measured gas returns to the normal state.
(LED and LCD Backlight are displayed continuously and the alarm sound stops, if power key is
pressed during the alarm sounds. During the alarm sound, the measured value and A1 or A2
are displayed in turn on LCD.) In case of A2, power should be disconnected in order to stop
the alarm.
When the concentration value of the measured
g
as exceeds the maximum measurin
g
ran
g
e, it
ggg
is indicated as the maximum value. And LED, alarm sound and vibration applicable to A2
Alarm Standard operate together
Indication of Peak Value and TWA & STEL Value
At Gas Measure Mode, Peak value is displayed (Peak values of all 4 sensors) by pressing Arrow
ke
y
for 3 seconds, the value of TWA
(
onl
y
for CO and H2S
)
is shown b
y
p
ressin
g
it a
g
ain, and
y(y)ypgg
that of STEL (only for CO and H2S) is indicated consecutively by pressing it once more.
The program returns to Gas Measure Mode by pressing Power key at the state indicating Peak
3 sec
The
program
returns
to
Gas
Measure
Mode
by
pressing
Power
key
at
the
state
indicating
Peak
,
TWA and STEL. And it reverts automatically to Gas Measure Mode as well without using the
button for 30 seconds at the state of Peak, TWA and STEL.
6

Calibration
Caution: Senko Co., Ltd. performs the initial calibration before the shipment. Incorrectly
calibrated value can reduce the accuracy of the product, as the calibrated value is stored in the
instrument. Calibration is in general to be performed monthly or quarterly, and can be adjusted
according to frequency of the use.
Calibration
Fresh air Calibration
Press Power key for 5 seconds and input password (refer to the way of password input), and Lock icon
will blink. Then press Arrow key to make the icon blink. When Power key is pressed at the state, it
converts to Calibration mode of the standby state.
Calibration will be processed, when Power key is pressed after entering to Calibration mode of the
standby state. Calibration will be completed by 3 time blinking of 4 sorts of gas concentrations,
and the mark OK is displayed.
5 sec Password
When Power key is input at the state of OK after completing the
calibration of standby state, the program returns to the previous
Ca
li
b
r
at
i
o
n
Se
l
ect
m
ode
o
f
t
h
e
sta
n
dby
state.
I
t
r
etu
rn
s
to
Gas
M
easu
r
e
Ca b at o Se ect ode o t e sta dby state. t etu s to Gas easu e
Mode, if Arrow key is pressed twice at Calibration mode of standby
state. Please note that it reverts to Gas Measure mode through
Standard Gas mode.
7

Caution: Fresh Gas Calibration should be performed at the environment of fresh air without any
influence of other gases since the calibration is performed on the assumption that the
Standard Gas Calibration
influence
of
other
gases
,
since
the
calibration
is
performed
on
the
assumption
that
the
concentration of Oxygen is 20.9%, that of Inflammable Gas is 0%LEL, and the concentration of
Toxic Gas is 0ppm in the fresh air. Accordingly it is not recommended to perform Fresh Air
Calibration at the closed space, and it should be avoided to perform the calibration where gases
can be inhaled by operators.
Press Power key for 5 seconds and enter the password (the initial password is 000), then Lock icon
will blink. And press Arrow key to see icon blink. The icon will blink, when the operator
presses again Arrow key once more. Then it enters to Standard Gas Calibration Mode of, as Power
key is pressed.
5sec
Password
5
sec
Password
When the program is converted to Standard Gas Calibration Mode, %LEL Standard Gas
Concentration that has been initially input is displayed. And it moves to each Calibration
M
ode
r
espect
iv
e
l
y,
in
d
i
cat
in
g
t
h
e
v
a
l
ues
o
f
Sta
n
da
r
d
Gas
Co
n
ce
n
t
r
at
i
o
n
o
f
O
2
,
CO
a
n
d
H2
S
ode espect e y, d cat g t e a ues o Sta da d Gas Co ce t at o o O , CO a d S
that have been input by Arrow key.
Concentration of Calibration Gas set at Instrument
Gas Combustible Oxygen Carbon
monoxide
Hydrogen
Sulfide
monoxide
Sulfide
Concentration 20 %LEL 0% 100 ppm 50 ppm
8

The method of Standard Gas is as below. The program enters to %LEL Calibration Mode blinking
the numbers, when Power key is pressed at %LEL Standard Gas Calibration Mode. In case that the
inflammable gas that conforms to %LEL concentration input initially at the instrument is used,
calibration is executed indicating the concentration value connected at the moment by pressing
Power key twice. In case that using Standard Gas of different concentration from that of %LEL
initially input proceed with calibration after changing the concentration to that of the required
Method of Calibration
initially
input
,
proceed
with
calibration
after
changing
the
concentration
to
that
of
the
required
Standard Gas by the same way as the input of password as shown at the diagram below. Then the
concentration value of the calibration gas connected at the moment is indicated with the
countdown of 60 seconds. If there does not occur any problem of calibration for 60 seconds, the
concentration of the calibrated gas is displayed after memorizing the concentration of calibrated
gas as the value of sensor. Methods of the calibration for the sensor of CO, O2 and H2S are to be
proceeded same as the following diagram.
Value
Gas
60 second
Count down
Failure of Calibration
In the event that Gas Calibration fails, the mark --- is displayed at the
value of calibration with the icon of Test Failure. If this occurrence
repeats, please consult a dealer or aftercare center to replace the sensor.
9

Mthd fAl St dDi l
M
e
th
o
d
o
f
Al
arm
S
e
t
up an
d
Di
sp
l
ay
Caution: The value of alarm of the instrument is set according to the alarm standard of each gas
that is required by international standard. Therefore alarm value of the relevant gas can be
changed under the responsibility and approval of the administrator of the work site where the
instrument is used.
Alarm Alarm Standard LCD Display Alarm & Vibration Display
A1 In Exceeding Alarm
Value Set Primarily
Displaying
Icon A1 &
Concentration
Alarm Display
A2 In Exceeding Alarm
Value Set Secondarily
Displaying
Icon A2 &
Concentration
TWA
In Exceeding Exposure
Concentration for 8
hour
Displaying
Icon TWA &
Concentration
In Exceedin
g
Ex
p
osure Dis
p
la
y
in
g
STEL
gp
Concentration for
15 minutes
pyg
Icon STEL &
Concentration
Low
Remained Battery
Capacity is small (one
bar)
Blinking of
Test Fail re
Failure of Sensor Test Displaying
Icon Test
Buzzer
LED, LCD Backlight
Test
Fail
u
re
Failure of Calibration
Icon
Test
Failure
When A1 alarm occurs, and the operator recognizes it and presses Power key, only the sound and
vibration of alarm stop, remaining LED alarm as the operation stale.
When A2 alarm happens, the operator and workers should promptly escape from the work site. The
alarm will stop when power is turned off at the place where the concentration value of gas is normal
alarm
will
stop
,
when
power
is
turned
off
at
the
place
where
the
concentration
value
of
gas
is
normal
after moving to a safe region. (If the instrument is operated again at an abnormal environment, the
warning of test failure is displayed.)
When STEL / TWA alarm occurs, it is indicated with the value of the measured concentration and alerts
alarms of the same sound of alarm and vibration as that of A2 alarm.
When STEL / TWA alarm occurs, the icon can be deleted only by Power Off.
Note: It is available to set the different alarm sound of each gas respectively by requirement of the
user. Please consult Senko Co., Ltd. for further detailed information.
10

Primary battery alarm sounds repeatedly at 5 minute intervals when only a bar of battery icon is
remained.
Alarm Set Point (TWA, STEL)
Secondary battery alarm starts right before the end of power, and the power source finishes after 10
seconds from the outbreak of alarm.
In the event of failure of test or calibration, the icon of Test Failure is displayed with the sound of
alarm.
Gas Combustible Oxygen Carbon
monoxide Hydrogen Sulfide
A1 20 %LEL 19% 30 ppm 10 ppm
A2 40 %LEL 23% 60 ppm 20 ppm
TWA
30
ppm
10 ppm
TWA
30
ppm
10 ppm
STEL 200 ppm 15 ppm
Alarm Set
When Lock icon blinks after entering password, approach to A1 Alarm Value Set Select Mode by
p
ressin
g
Power ke
y
. Note: If Arrow ke
y
is
p
ressed durin
g
blinkin
g
of Lock icon, the
p
ro
g
ram
pg y
yp g g pg
moves to Calibration Select Mode likely Sensor Calibration Mode. Please pay attention to this
point.
A1 icon blinks, when Power key is pressed at Lock Blink Mode. It will be converted to A1 Alarm Mode
by pressing Power key, and the blinking icon will be alternated in the sequence of A2, TWL, STEL and
Password. If you want to approach to each Alarm Value Set Mode, enter it by pressing Power key.
Please use Arrow key in order to escape to Gas Calibration Mode.
A1 setting mode
Caution: Changing alarm value of TWA and STEL can be applied onl
y to Carbon Monoxide and Hydrogen Sulfide. The change of alarm
standard of TWA and STEL can cause the fatal influence to the lives
of operators and workers; therefore it must be set in accordance wit
h the regulations of the relevant country and the standard of exposu
re at work site, if it is inevitably changed.
11

Alarm Set of Each Gas
Alarm
Set
of
Each
Gas
A1 icon blinks by pressing Power key at Lock Blink Mode. And it is converted to %LEL Alarm Value Set
Mode by pressing Power key again.
After moving to %LEL Alarm Value Set Mode, Alarm Value of %LEL, that has been input initially,
blinks. And the Alarm Value can be changed by the same method as password input. Changing
sequence of Alarm Value is %LEL, %vol, Oxygen, Carbon Monoxide and Hydrogen Sulfide, and it
ttA1StMdhthh fAlVlfhi ltd
re
t
urns
t
o
A1
S
e
t
M
o
d
e w
h
en
th
e c
h
ange o
f
Al
arm
V
a
l
ue o
f
eac
h
gas
i
s comp
l
e
t
e
d
.
Note: In case of Inflammable Gas, it is determined by Alarm Set Mode to display %LEL or %VOL.
When %LEL Alarm Value is changed, %LEL is displayed at Calibration Mode. In the event
that %VOL Alarm Value is changed, %VOL is indicated at Calibration Mode. If you don’t want
the display by %VOL, move to the next step without changing the value at %VOL Alarm Value
Chan
g
e Mode.
A1 setting mode
g
At Alarm Value Set Mode, Arrow key represents the increase (change) of
‘Number’ in lieu of Move. In other words, the number increases by
pressing Arrow key, and it moves to the next number with blinks by
pressing Power key. Program returns to the initial A1 Set Mode, after
changing A1 Alarm Values in sequence of the gases. As mentioned on
page 12 the program converts to A2 Alarm Set Mode by pressing
A1 setting mode
page
12
,
the
program
converts
to
A2
Alarm
Set
Mode
by
pressing
Arrow key at A1 Set Mode, and it approaches again to %LEL Alarm
Value Set Mode by pressing Power key. Please refer to Operation Flow
Chart for the detailed moving path.
12

Password Input
Password input screen appears by pressing Power key for 5 seconds.
Number changes from far left to the right side.
It moves upward by each 1 step and blinks by pressing Arrow key, and
the blinking 2nd number moves the position by pressing Power key. If
you press Arrow key, the number moves upward, and the 3rd number
blinks and moves the position by pressing Power key After
Password
Input
blinks
and
moves
the
position
by
pressing
Power
key
.
After
completing the change of the last number and enter the Power key,
Lock icon blinks with 0.5 second alarm sound if the password is correct.
As previously explained, the program moves to Calibration Mode by
pressing Move key, and moves to Alarm Set Mode by Power key.
If the password is incorrect, it returns to Gas Measure Mode altering
the alarm sound.
Changing Password
Caution: The initial password is set as 000. It is impossible to enter Calibration or Alarm Set
Mode, if the operator can’t remember the new password after changing it. Please be sure not
to forget the password
A1 setting mode
to
forget
the
password
.
password
When password icon blinks by moving as the above drawings, press Power key. Then the existing
password is displayed blinking from the first digit. If the new password is entered, the existing
password is deleted and the new password appears. When the same password is put repeatedly at RE,
the password will be changed and the program will return Password Change Mode where Lock icon is
blinking. If further change of password is not required, return to Gas Measure Mode by using Arrow
key.
13

Applicable Battery
Caution: It is absolutely prohibited to replace battery at potential explosion areas or dangerous
regions. And the charger should be always used at the safe place, since it is not an explosion-
proof product.
- The applicable batteries that are tested and are allowed in Ex zones are as below.
- It is a condition of safe use that the instrument should be used only with one of
the below applicable batteries.
- If the battery of other specification use, It is not permitted to use it for the
instrument at dangerous regions
Warning: Followings may cause the danger of explosion; to use the old battery and the new one
to
g
ether, to use different manufacturer’s batter
y
; or to use the batteries of different s
p
ecification.
- Disposable Alkaline Battery: Energizer No. E91, Energizer No.EN91
- Rechargeable Ni-H Battery: GP BATTERY GP210AAHCB
gyp
In order to avoid an accident, please use only the applicable batteries as specified above
Warning: Explosion can occur, when a battery is thrown into fire or disassembled with force.
Disposal of the used battery should be performed according to the guide of the pertinent
country or the work site.
When the unit is connected to battery charger, power source should be turned
off without fail before charging. The state of charging is indicated on LED
display of the charger. Red lamp indicates the state of charging, and Green
lamp shows the state of the completion of charging. Charging time of
rechargeable battery is 5 hours, and it can be used for 12 hours at the state of
general measuring.
External Pump (Optional)
key has the function of On/Off, and the state of
operation or trouble of the instrument can be
operation
or
trouble
of
the
instrument
can
be
recognized by LED lamp.
When the leakage measurement or the measurement of
concentration by inhalation of gas is required, it is
available to measure gas concentration and leakage at
the pertinent place by connecting the pump to the
instrument. Prior to use, make sure that the instrument
is tightly attached to the probe cover which is
is
tightly
attached
to
the
probe
cover
which
is
connected to the sensor.
Please note that External Pump is the optional product
that can be provided by the separate order.
14

Battery & Sensor replacement
When you replace the Battery and sensors of SP12C7, you need some instrument and components as
below.
- Tool : - Phillips screw driver, Tip size : M2 x 20mm, M2 x 6mm
- wrench(hexagon) M3 x 12mm
- Battery : Energizer No.E91, EN91 or GP rechargeable Battery GP210AAHCB
- Sensors for replacement : SENKO SS series
-
Filters for replacement
Warning :
- It is a condition of safe use that the instrument should be used only with one of the applicable
batteries.
- It is absolutely prohibited to replace battery at potential explosion areas or dangerous regions.
-Unauthorized repair of this device invalidates the type of Ex protection and is prohibited by law. A
defective device should be sent to SENKO for repair or replacement.
Th id d b SENKO h ld b d f l t U it bl f ti ld b
Filters
for
replacement
-
Th
e sensors prov
id
e
d
b
y
SENKO
s
h
ou
ld
b
e use
d
f
or rep
l
acemen
t
.
U
nsu
it
a
bl
e
f
unc
ti
on cou
ld
b
e
shown if another sensors are used for replacement.
-Disassembly should be necessary only for sensors & battery replacement. After the sensor
replacement, the span gas calibration should be done.
Disassembly
- Turn off the power.
Replace the sensor and battery please refer to below drawing
2 3 456
6
7 6
-
Replace
the
sensor
and
battery
,
please
refer
to
below
drawing
.
- After replacement, check the sensor fail and battery working.
1
168
1. Label(Membrane)
2. Front Cover
3
Sensor
5. Rear Cover
6. Machine Screw
7 Belt clip
9
3
.
Sensor
4. PCB
7
.
Belt
clip
8. Bolt(hexagon)
9. Battery
15

O
p
eration Flow Chart
Calibration & Configuration Flow
16

Notice for User
Please use the instrument in the range of the applicable temperature, humidity and
pressure that are appropriate for the specification of the product. Using the
instrument beyond this range may cause malfunction or glitch of the instrument. .
Notice
for
User
Gas concentration measurement value by the sensor or the instrument can vary
Gas
concentration
measurement
value
by
the
sensor
or
the
instrument
can
vary
according to the environment at site (temperature, pressure and humidity). Therefore
the calibration of the instrument should be performed at the same or similar
environment as that of the instrument use (temperature, pressure and humidity),
If temperature changes sharply during use of the instrument (for instance, using the
instrument at places of far different temperatures between indoor and outdoor), the
value of the measured gas concentration can be changed suddenly. Please use it
after the gas concentration value is stabilized. .
Severe vibration or shock to the instrument may cause the sudden change of value
of the measured
g
as concentration. Please use it after the value of
g
as concentration
gg
is stabilized. Excessive shock to the unit can lead to trouble of the sensor or the
instrument.
18

Notes on Approval(Label)
CE marking: Electromagnetic Compatibility
(Directive 2004/108/EEC)
Explosion Protection
(Directive 94/9/EEC)
KS marking: Korean Gas Safety for Explosion
Protection
This Ex marking means that this device is an intrinsically safe apparatus of ATEX category
1 according to directive 94/9/EC, the certificate number is DNV 10 ATEX ------X. It can
be operated in non-mining locations (II) with potential explosive gas atmospheres (G) in
zone 0, 1 and 2 with gas group C, B or A. The temperature classification is T4 (135 °C) for
ambient temperatures up to +50 °C. It can not be operated in explosive dust
Protection
atmospheres.
The X in the certificate number means that there are special conditions for safe use and
that the user should check the ATEX certificate. In this case it is the following:
It is a condition of safe use that the instrument should be used only with one of the
following lithium manganese dioxide batteries: Panasonic or Duracell type CR2
S
/
N: Serial Number
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Certificates