Wise RL Series User manual

C-QIM-2731-T24_EN_Rev.2
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Cool-down and leak detector
(RL series)
R190 Series

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C-QIM-2731-T24_EN_Rev.2
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Contents
1. General items......................................................................................................................2
1.1 Introduction.........................................................................................................................2
1.2 Application..........................................................................................................................2
1.3 Warranty............................................................................................................................. 2
2. Warning...............................................................................................................................3
3. Main specs..........................................................................................................................4
3.1 Explosion-proof...................................................................................................................4
3.2 Protection grade.................................................................................................................4
3.3 Temperature sensor types .................................................................................................4
3.4 Accuracy and tolerances....................................................................................................4
4. Design.................................................................................................................................5
4.1 Installation components......................................................................................................5
4.2 Basic pre-order design requirements.................................................................................5
4.3 Head...................................................................................................................................6
4.4 Sheathed cable (MI cable) .................................................................................................7
4.5 Types of temperature sensor ............................................................................................. 8
4.5.1 Resistance thermometer detector (RTD) ........................................................................8
4.6 Process connection unit................................................................................................... 10
4.6.1 Basic type......................................................................................................................10
4.7 Additional options.............................................................................................................11
4.7.1 Heat transfer block........................................................................................................11
4.7.2 Compression fitting........................................................................................................11
5. Installation guide ...............................................................................................................12
5.1 Pre-installation checks and precautions...........................................................................12
5.2 Installation requirement.................................................................................................... 13
5.3 Storage............................................................................................................................. 14
5.4 Installation order...............................................................................................................14
6. Wiring ................................................................................................................................17
6.1 Extension wire.................................................................................................................. 17
6.2 Precauation for wiring....................................................................................................... 18
6.3 Terminal block wiring........................................................................................................ 19
6.4 International color code table...........................................................................................20
7. Name plate........................................................................................................................ 21
7.1 Name plate indications.....................................................................................................21
8. Maintenance......................................................................................................................22
9. Defect................................................................................................................................22
10.User's duties......................................................................................................................23
11.Product return....................................................................................................................23

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1. General items
1.1 Introduction
The Cryogenic leak detecting temperature sensor manufactured by Wise Co., Ltd. is a product
designed with a pressure-resistant explosion-proof structure. An explosion proof structure means that
explosions due to heat or flame inside a vessel do not affect outside gases. This reduces the risk of
explosion due to electrical sparks or arcs in explosive environments under normal and abnormal
circumstances. This product must be tested and stored in appropriate locations, and the requirements
provided in the documentation, test reports and handling manuals, etc., must be adhered to in order to
maintain optimum state during the duration of use.
1.2 Application
They are used for temperature measurement in cold or cryogenic industrial environments, such as
LNG tanks and oxygen temperature monitoring at pharmaceuticals and biotech R&D facilities.
Cryogenic technologies are widely used throughout various state-of-the-art industries such as food
science, agriculture, raw materials, and vaccine development. Most gases which are in a gaseous
state at room temperature liquefy at temperatures of -40℃or higher, by cryogenic gases such as
helium, hydrogen, neon, nitrogen, oxygen, argon and methane can be liquefied at temperatures of -
150℃or lower. Pt100 Ω sensors are commonly used for cryogenic applications, and are capable of
sensing temperatures from -196 to 600℃. K-type and T-type thermocouples can be used, but while
thermocouples are less expensive, they provide a smaller temperature range and the thin cables often
freeze and snap inside chillers. Use of a Pt100 Ω sensor is therefore recommended. They are used for
temperature measurements in various processes, and measured values are used for indication,
recording and control in control panels or process systems. Units can be designed to suit all
applications in accordance with customer requirements.
1.3 Warranty
If one causes damage to the product due to failures to comply with the user manual, or if one
arbitrarily remodels it, changes or repairs the product, the manufacturer will not be responsible for it,
and the product warranty period will expire.

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2. Warning
Guide on handling for safe use
For the safe and correct use of the product, make sure to read the handling guide carefully before use.
Handling errors can cause device malfunctions, and it can lead to injury, accidents, etc.
Warning !
1) For the safety, only a worker with professional skills in electronics and electrical construction is
allowed to install the product.
2) Make sure to use the product within the rated input/output range set in the specifications.
3) Install the product in the environment of use indicated in the specifications.
4) Install wiring in accordance with the indoor wiring provisions and the Technical Standard for
Electrical Installations.
5) Make sure power has been cut off before performing wiring work.
6) Use wires with a sheath-insulated crimp terminal at the end.
7) Cable glands of the same explosion proof grade or higher.
8) Do not disassemble the product under any circumstances.
9) Use the product in the permissible temperature range.
10) Do not apply excessive loads, vibrations, or impacts.

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3. Main specs
3.1 Explosion-proof
Model: R190 (RC Series)
Explosion-proof grade: Ex d IIC T6 Gb
Explosion-proof technology criteria: IEC 60079-0, IEC 60079-1
3.2 Protection grade
IP 56, 66
3.3 Temperature sensor types
Resistance thermometer detector (RTD): Pt 100Ω at 0 ℃
3.4 Accuracy and tolerances
Class A, B (IEC/EN 60751)
Tolerance
class
Temperature range of validity (°C)
Tolerance value (℃)
For wire wound resistors
For film resistors
A
-100 to +450
-30 to +300
± ( 0.15 + 0.002 | t | )
B
-196 to +600
-50 to +500
± ( 0.3 + 0.005 | t | )
Operating temperature range by type
Type
Operating temperature range(℃)
RTD
Pt 100 Ω
high-temperature
-200~100
medium
temperature
0~350
high-temperature
0~600

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4. Design
4.1 Installation components
Head: Structure protecting electrical signals measured by sensor from external risk
(provided with components such as cable glands, earthing terminal and terminals)
Extension cable: Cable (Teflon(260°C)) for electric connection between sheathed cable(MI
cable) and Head
Sensor unit: Sheathed cable comprising thermocouple or RTD
Process connection unit: The connection between the measuring element and the process is
normally supplied as a flange type assembly.
Compression fittings: Select when process environment conditions require appropriate airtight
seals, according to external environment (vulnerable to contact with heat) temperature,
pressure and fluid medium
Additional accessories: Accessories available as an option for installation
(Clips, pads, spacers, stacking spring, heat shield, heat transmission block, pressure valve, etc)
Tailored design for all applications
4.2 Basic pre-order design requirements
High insulation characteristics are required to ensure that the sheath cable (MI cable) material
is protected from process temperatures.
The type of temperature sensor must be selected carefully depending on requirements.
(Check maximum allowable pressure and load, min./max working temperature, process fluid,
vibration)
The sheath cable (MI cable) material must be selected carefully, checking that the material is
appropriate to the material of the tank or pipe and the process environment.
Number and location of measuring points
Insertion length
Materials and process compatibility
Check that the product is compliant with existing control system requirements
A variety of miscellaneous designs specially engineered to customer applications are provided.

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4.3 Head
Explosion proof head structure protecting against ingress of dust, fine particulate matter and water, etc.
Warning: Certified explosionproof cable glands must be used when installing in hazardous areas.
See the <Table: Head information> below for the types of cables that may be connected
Table : Head information
Head
Head material
Head thread
(Cable entry size)
Conduit adaptor
Conduit adaptor
material
Explosion proof
(Dual entry type)
316SS
PF 1 1/4
PF 1 1/2
NPT 1 1/4
NPT 1 1/2
PT (unavailable)
Brass+Ni.plating
316SS

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4.4 Sheathed cable (MI cable)
A sheathed cable (MI cable) is an insulated cable for protecting an inner wire. The space between a
protection metal tube and inner wire or nickel wire is filled and sealed with the inorganic insulating
material magnesium oxide (MgO) at high temperature and high pressure.
Sheathed cable(MI cable) structure
1) Protection metal tube: Filled with inorganic insulating material to insulate and protect the inner wire
or nickel wire for metal tube
2) Inorganic Insulator: Highly pure magnesium oxide(MgO) powder to electrically insulate the
protection metal tube and inner wires
3) Internal conductor: The resistance temperature detector (RTD) is a nickel wire used for connecting
the resistor element to the terminal.
4) Insulating tube: Ceramic tube used to insulate and prevent short circuit between the resistor
element and the inner wire connection
5) Resistor element:A resistant platinum element for temperature measurement, fixed in place inside
the protection tube
6) The sheathed cable (MI cable) is flexible and mechanically robust. When installing with a curvature,
the minimum radius of curvature must be 5 times the outer diameter of the sheathed cable (MI
cable). (KS C 1616)
7) The sensor portion of a resistance temperature detector (RTD) contains a resistor element, and the
cable must be kept straight within 100mm from the sensor portion. (Do not bend)
8) Cables, plug-in connectors or connector sockets may be connected.

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4.5 Types of temperature sensor
4.5.1 Resistance thermometer detector (RTD)
Resistance temperature detectors (RTD) operate according to the principle of thermal resistance. The
electrical resistance of a metal wire increases with temperature. Typical resistance temperature
detectors(RTD) elements made of copper, nickel or platinum have large variations in resistance
according to temperature change, and can more safety and accurately measure temperatures
compared to thermocouples(TC) However, they have limited temperature range and relatively high
cost. They require current to measure temperature, and heat generated by the resistance temperature
detectors (RTD) themselves may impact the accuracy of temperatures measured. Selecting an
resistance temperature detectors (RTD) appropriate for the location of temperature measurement is
most important to ensure accurate temperature measurement.Accordingly, when selecting a
resistance temperature detectors (RTD), sufficient consideration needs to be given to a structure
resistant to surrounding conditions such as heat, corrosion and mechanical impact, installation method,
resistance temperature detectors (RTD) element and protection tubing, etc.
Types of resistance thermometer detector(RTD)
1) Ceramic type (Pt100Ω): Platinum resistance thermometer detector (RTD) elements using ceramics
are used for measuring temperatures in the range of -196 ~ 600℃, and have superior
reproducibility and stability compared to other elements. These are used broadly for industrial
temperature measurements with margins of error ranging from ClassA and B to DIN IEC751, and
used in most standard resistance thermometer detector (RTD).
2) Film type (Pt100Ω): Allows for maximum exposure of the sensor, giving fast response times. Small
length and thickness allows installation in tight spaces, with high impact and vibration resistance.
Used for measuring temperatures in the range of -50 ~ 500℃, and used broadly for industrial
temperature measurements with margins of error ranging from ClassA and B to DIN IEC751, and
used in most standard resistance thermometer detector (RTD).
Ceramic type Film type

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Inner wires
Nickel wire is typically used for connecting the resistor element to the terminal, and the 3-wire type
connection is standard.
1) 2-wire type: One wire is connected to each of the two terminals of the resistance thermometer
detector (RTD) element. This saves costs, but is subject to the impact of wire resistance and is not
suitable for high accuracy temperature measurements.
2) 3-wire type: Two wires are connected to one terminal of the resistance thermometer detector (RTD)
element, with a single wire connected to the other terminal. This reduces the impact of wire
resistance. Most commonly used for high reliability.
3) 4-wire type: Two wires are connected to each of the resistance thermometer detector (RTD)
terminals to eliminate the impact of wire resistance. Suitable for temperature measurements where
especially high accuracy is required.
4) Typical materials for resistance thermometer detector (RTD) internal wires are pure metals such as
nickel (Ni), copper (Cu), and platinum (Pt),etc