Legal regulations and standards:
• Laws, regulations and technical standards referring to occupational safety must be followed during installation.
• Electrical connection ofthe detector may only
be
carried out by a competent person with electrician qualification who
is familiarized with the "Instruction Manual" in detail.
• The Instruction Manual is part
of
the product and it is necessary to keep itfor the entire service life ofthe product.
• The Instruction Manual must be transferred to any other owner
or
user ofthe product.
• The disposal must be performed in compliance with the Directive 2008/98/ES of the European Parliament and of the
Council -on waste and the Directive 2012/19/ES ofthe European Parliament and ofthe Council -on waste electrical
and electronic equipment (WEEE).
• The sensors are delivered in packages, which guarantee resistance to mechanical influences and that meet the
conditions with the European Parliament and Council Directive 94/62/ES on packaging and packaging waste.
• All SENSIT s.r.o. products are checked for their function and the compliance with their specifications usually by
comparison with reference measuring instruments. These reference instruments are traceable to the Czech national
standards and the measurement uncertainty is considered for the measuring processes.
Application:
The temperature sensors TG68 are designed for measuring temperatures
of
gaseous and liquid substances. The
temperature range for application of the sensor is -40 °C to
12S
°C and it must not be exceeded even for a short term.
The sensors may be used for all control systems compatible with the DALLAS
OS
18B20 temperature sensor. They
meet the ingress protection IP68
HSm
according to the
EN
60
S29
standard and sensors can be immersed permanently
in
the liquid up to depth of S
m.
The sensors are suitable for temperature measurement in chemically non-aggressive
environments, the using must be chosen with regard to temperature and chemical resistant housing and a cable.
Recommended
use
and l
ocation
of
sensors:
• Operati
ng
position is arbitrary
• The recommended minimum immersion ofthe sensor in the medium is 80
mm
• The whole sensorincluding cable can be immersed into liquid up to a depth
of
Sm
Warnings and restrictions:
The
sensors
must
not
be
used
for
measuring
in
locations:
• Where the specified technical parameters and operating conditions are not adhered
• Where the sensor is exposed to mechanical action
• With explosion hazard (the supply cable is not resistant to flame propagation)
• For measuring temperatures ofsubjects under voltage
•
Wrth
chemically aggressive environment
• Where the sensor is exposed to permanent immersion
in
the liquid to a depth greater than
Sm
It is
no
t
suitable
to
use
the
sensors
for
measuring temperature
in
locations:
• Where sufficient contact with the measured fluid is not secured (low submersi
on
of the sensor, effects of the
surroundings).
• Where the supply cable might
run
parallel to mains cables (risk of interference signal induction and the measurement
results may be influenced), the safe distance from mains power cables when cables run parallel can be as much
as
O,S m according tothe nature of interfering fields.
• Where the sensor might be exposed to effects of strong organic and inorganic acids with medium and strong
concentrations
at
high temperatures, weak organic acids with high concentrations and high temperatures, chlorinated
hydrocarbons, and undiluted alkaline substances.
Failure to follow the said recommendations will negatively affect measurement accuracy, reliability and service life ofthe
temperature sensor.
Declaration
of
conformity
SENSIT s.r.o. provides the product with the
EU
Declaration
of
Conformity
issued according to Act No. 22/1997 Coll.,
as
subsequently amended. The product is in accordance with the following directives:
Directive 2011/6S/EU
of
the European Parliament and of the Council of 8 June
2011
on the restriction of the use of
certain hazardous substances
in
electrical and electronic equipment, as amended (current version 1.9.2020)
Product safety and technical parameters were evaluated accordi
ng
to the following standards and norms, as amended:
•
EN
6b7S1,
EN
60S29
•
EN
60730-1,
EN
60730-2-9
Sensor description:
The sensor consists of a metallic housing with the sensing element inside and a supply cable. The sensor housing is
made
of
stainless steel -DIN 1.4301. The sensors can be connected as two-wire or three-wire probes. The supply cable
has external silicone insulation and is shielded. The shielding is not connected with the housing
or
with the temperature
element. The length ofthe housing can be chosen from 60 up to 200
mm
.
Sensor installation:
1. Install the sensor in the measured location
or
insert it in the thermowell and ensure
fl)(
installation
of
the sensor to
prevent its movement
2. Connect the wires of the supply cable to the evaluation unit according the wiring diagram. The
supply
cable
shielding
is
not
conductively
connected
with
the
external
housing
of
the
sensor
or
with
the
temperature
el
ement
3. After installation and connection to the consequential electrical measuring device, the sensor is ready for operation.
The sensor does not require any special manipulation
or
maintenance.
Wir
ing
diagram:
Technical parameters:
Tvoe
of
element
Accuracy class ofelement
DALLAS
18820
GNDDQVOO
red
I I white
Two-wire
Temperature element wirina
Measuring range
Power suoolv
Sensor
IP
code
Response time
Housing material
Housinq diameter
Housina lenath
Dielectric strength
Insulation resistance
Supply cable type
Suoolv cable lenath
Pressure resistance
(Efect on the stem with the medium)
Weight
Operating conditions:
DALLAS
18820
GNODQVOO
~1
~
3:
Li
'
.,,
~6
three-wire
Dallas DS18B20
± o,s0c in
ranQe
-1
oto
80
°C
Two-wire confiauration
-40 °C to
12S
°C
3 to
SV
SELVor
PELV
IP 68
HSm
accordina to
EN
60
S29
Tos
< 12 sec (in flowinq water> 0,2 m.s-
')
60mm
: stainless steel
DIN
1.4404
Other lengths: stainless steel
DIN
1.4301
6.
0±
0,1
mm
60mm
soo
voe according to
EN
60730-1
> 200
Mn
at
SOOVDC
,
2S
± 3 °C
Two-wire: silicone shielded 2 x 0,34
mm
2
Three-wire: silicone shielded 3 x 0,22
mm
2
2m
Without thermowell
2,S
MPa
Wrth
thermowell
6,3MPa
O,
OSS
kg/
1 m for lenath 60
mm
and cable 1 m
• temperature round the supply cable:
• relative humidity ofthe surroundings: -40 °C to
10S
°C
10to100%
• atmospheric pressure: 70 to 106 kPa
Sto
rage:
• Ambient temperature Sto 40 °C
• Humidity Sto
8S%
