Elsist SENSIT TG68 DS 18B20 Руководство по эксплуатации - Страница 2
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Печатать страницуLegal regulations and standards:
• Laws, regulations and technical standards referring to occupational safety must be followed during
installation.
• Electrical connection of the 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 it for the entire service life of the
product.
• The Instruction Manual must be transferred to any other owner or user of the 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 of the European Parliament and of the 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 location of sensors:
• Operating position is arbitrary
• The recommended minimum immersion of the sensor in the medium is 80 mm
• The whole sensor including cable can be immersed into liquid up to a depth of S m
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 of subjects 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
not
suitable to use the sensors for measuring temperature in locations:
•
Where sufficient contact with the measured fluid is not secured (low submersion 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 to the 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 of the
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 according 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 of the 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
element
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.
Wiring diagram:
Technical parameters:
Tvoe of element
Accuracy class of element
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,s
0
c
in ranQe -1
o
to 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 of the surroundings:
-40 °C to 10S °C
10to100%
• atmospheric
pressure:
70 to 106 kPa
Storage:
• Ambient temperature S to 40 °C
• Humidity S to 8S%