Wise R950 Series User manual

C-QIM-2731-T08_EN_Rev.12
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Explosion proof
thermocouple & RTD
ETR10 series
R950 series

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Contents
1. General items...................................................................................................................... 3
1.1 Introduction.........................................................................................................................3
1.2 Application.......................................................................................................................... 3
1.3 Warranty.............................................................................................................................3
2. Warning............................................................................................................................... 4
3. Main specs..........................................................................................................................5
3.1 Explosion-proof...................................................................................................................5
3.2 Protection grade.................................................................................................................5
3.3 Temperature sensor types .................................................................................................5
3.4 Accuracy and tolerances.................................................................................................... 5
4. Design................................................................................................................................. 7
4.1 Structure.............................................................................................................................7
4.1.1 Basic type........................................................................................................................ 7
4.1.2 Spring loaded type ..........................................................................................................7
4.1.3 Remote type.................................................................................................................... 7
4.1.4 Extended lead wire type.................................................................................................. 7
4.2 Head................................................................................................................................... 8
4.3 Detector unit and process connection unit material...........................................................9
4.4 Process connection unit................................................................................................... 10
4.4.1 Sheathed cable (MI cable) type..................................................................................... 10
4.4.2 Remote type.................................................................................................................. 10
4.4.3 Extended lead wire type................................................................................................ 11
4.5 Relationship between process connection unit length and head temperature increase.. 12
4.6 Electric parameters...........................................................................................................13
4.6.1 Increased safety (Ex e) ................................................................................................. 13
4.6.2 Intrinsically safe (Ex ia) .................................................................................................13
5. Installation guide ...............................................................................................................14
5.1 Pre-installation checks and precautions...........................................................................14
5.2 Installation requirement....................................................................................................14
5.3 Installation in explosion proof areas.................................................................................16
6. Wiring ................................................................................................................................17
6.1 Extension & compensation wire....................................................................................... 17
6.1.1 Thermocouple(TC) ........................................................................................................17
6.1.2 Resistance thermometer detector(RTD)....................................................................... 17
6.2 Precaution for wiring.........................................................................................................18
6.3 Terminal block wiring........................................................................................................19
6.3.1 Thermocouple (TC) ....................................................................................................... 19
6.3.2 Resistance thermometer detector (RTD)...................................................................... 20

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6.4 International color code table...........................................................................................21
7. Name plate........................................................................................................................22
7.1 Name plate indications..................................................................................................... 22
8. Repair and maintenance...................................................................................................23
9. Defect................................................................................................................................ 23
10.User’s duties......................................................................................................................24
11.Product return.................................................................................................................... 24

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1. General items
1.1 Introduction
WISE Control Inc. temperature sensors and thermowells are precisely fabricated according to
customer specifications. The ETR10 series(R950) is an explosion-proof product designed to be used
in Zone 1(Ex e), Zone 0(Ex ia) with IECEx and ATEX certification. The product come in a variety of
types –basic, spring-loaded, remote type, extension lead wire type–and can be selected and used
accordingly to the usage environment. The products 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
Temperature sensors are used for temperature measurements in various processes. Measured values
are used for indication, recording and control in control panels or process systems. Depending on the
process situation, an appropriate thermowell may be selected and used, or a temperature sensor may
be inserted directly into a pipe without a thermowell. The thermowell is designed to protect a
thermometer or temperature sensor from fluid flow velocity, pressure and corrosion, etc., inside pipes.
The design prevents leakage of fluid from inside the pipe when a malfunctioning sensor is being
replaced. The user is responsible for selecting the appropriate thermowell for the process at hand.
WISE Control Inc. may provide advice when selecting products, but will not be held liable for mis-
selection of product.
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.
11) When selecting a thermowell for the product, select a thermowell appropriate to the usage
conditions and environment.
12) The customer is responsible for mis-selection of thermowells.
13) Do not grab the head and turn it. Using a tool, hold the hexagonal screw parts to turn it. O-
ring can cause changes over time or characteristics change, and it can lead to a loss of
necessary functions for sealing, thus it requires periodic replacement, and in general, it is
recommended to replace it every 5 years.

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3. Main specs
3.1 Explosion-proof
Model: R950 (ETR10 series)
Explosion-proofing grade:ATEX II 2G Ex e IIC T6…T1 Gb, IECEx Ex e IIC T6…T1 Gb,
KCs Ex e IIC T6…T1, CSA Ex eb IIC T6…T1 Gb
ATEX II 1/2 G Ex ia IIC T6…T3 Ga/Gb, IECEx Ex ia IIC T6…T3 Ga/Gb,
KCs Ex ia IIC T6
Explosion-proofing technology: IEC 60079-0, IEC 60079-7, IEC 60079-11, IEC 60079-26
3.2 Protection grade
IP65
3.3 Temperature sensor types
Thermocouple (TC)
ATEX
IECEx
KCs
CSA
Ex e
K, E, N, J, T, B, R, S
Ex ia
K, E, N, J, T, B, R, S
-
Resistance thermometer detector (RTD): Pt100Ωat 0℃
3.4 Accuracy and tolerances
Thermocouple (TC)
Class 1, Class 2 (DIN/IEC584-2, BS/EN60584-2, JIS C1602)
Special, Standard (ASTM E230, E988, ISA-MC96.1)
Resistance thermometer detector (RTD)
Class A : ± (0.15 + 0.002 l t l)
Class B : ± (0.3 + 0.005 l t l)
Please consult the table below for details.

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1) Thermocouple (TC): Class 1,2,3(IEC/EN 60584-2) or Standard / Special(ASTM E230, ANSI MC 96.1)
Type
Class
Temperature range
Maximum deviation
K
Standard
-200 ~ 0 ℃
The greater of ±2.2 ℃or ±2%
0 ~ 1260 ℃
The greater of ±2.2 ℃or ±0.75%
Special
0 ~ 1260 ℃
The greater of ±1.1 ℃or ±0.4%
E
Standard
-200 ~ 0 ℃
The greater of ±1.7 ℃or ±1%
0 ~ 870 ℃
The greater of ±1.7 ℃or ±0.5%
Special
0 ~ 870 ℃
The greater of ±1.0 ℃or ±0.4%
B
Standard
870 ~ 1700 ℃
±0.5%
Special
870 ~ 1700 ℃
±0.25%
R
Standard
0 ~ 1480 ℃
The greater of ±1.5 ℃or ±0.25%
Special
0 ~ 1480 ℃
The greater of ±0.6 ℃or ±0.1%
S
Standard
0 ~ 1480 ℃
The greater of ±1.5 ℃or ±0.25%
Special
0 ~ 1480 ℃
The greater of ±0.6 ℃or ±0.1%
N
Standard
0 ~ 1260 ℃
The greater of ±2.2 ℃or ±0.75%
Special
0 ~ 1260 ℃
The greater of ±1.1 ℃or ±0.4%
T
Standard
-200 ~ 0 ℃
The greater of ±1.0 ℃or ±1.5%
0 ~ 370 ℃
The greater of ±1.0 ℃or ±0.75%
Special
0 ~ 370 ℃
The greater of ±0.5 ℃or ±0.4%
J
Standard
0 ~ 760 ℃
The greater of ±2.2 ℃or ±0.75%
Special
0 ~ 760 ℃
The greater of ±1.1 ℃or ±0.4%
*Note.
Each model has different certification types. See “3.3 Temperature sensor types” and look up the
certifications for the applicable type in the table.
2) Resistance thermometer detector (RTD): 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 | )

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4. Design
4.1 Structure
4.1.1 Basic type
Explosion proof products are resistance against pressure and explosion. The enclosure is designed to
withstand the pressure of explosive gases or vapors exploding inside, and to prevent combustion due
to explosive gases or vapors outside the enclosure through joints and lead-ins. The basic type of the
products are comprised of a detector unit and process connection unit welded together. An appropriate
process connection unit may be selected and used depending on the installation environment. The
temperature sensor may be installed by inserting directly, or together with a thermowell appropriate to
the use environment.
4.1.2 Spring loaded type
In the spring-loaded type, a spring is installed inside the head, and the load from the spring allows the
sensor to maintain maximum contact. Detection response time is faster compared to the basic type.
Spring-loaded type sensors are not sealed to allow for movement of the detector unit, and are typically
installed together with a thermowell appropriate to the use environment. When installing the
temperature sensor directly, contact between the process fluid and temperature sensor should be
avoided, or a sealed type sensor should be used instead
4.1.3 Remote type
In the remote type, an extension table extends out beneath the head and is connected to a sheathed
cable The actual measuring element is inside the sheathed cable, and the distance between the head
and measuring element can be selected according to the installation location. The extension cable is
typically insulated stainless steel. Depending on the installation environment, a wall-mount bracket or
2” bracket may be used.
4.1.4 Extended lead wire type
The extended lead wire type does not have a head or terminal block, and is comprised of an extension
cable and sheathed cable. The cable may be insulated stainless steel, or sheathed with PVC, Teflon or
copper braid depending on the use environment.

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4.2 Head
Warning: Certified explosion proof 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
(Single/Dual entry
type)
ALDC12.1
(Single entry)
PF 1/2, PF 3/4,
NPT 1/2, NPT 3/4
NPT 1/2, NPT 3/4
M20x1.5P
PT (unavailable)
Brass+Ni.plating
316SS
316SS
PF 1/2
AC4C
(Dual entry)
PF 1/2
Explosion proof
(Single entry)
Explosion proof
(Double entry)

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4.3 Detector unit and process connection unit material
Metal
Material
Usage
temperature
(℃)
Max.
temperature
(℃)
Characteristic
304SS
900
1000
Typically used in thermowells to protect against heat and
corrosion. Direct use in sulfurous environments or
reducing flame is not recommended.
316SS
900
1000
Contains Mo for outstanding heat, acid and alkaline
resistance.
316L SS
950
1050
Less carbon content than 316.
Better acid and alkaline resistance than 316SS.
321SS
900
1000
Weak sulfur and reducing heat resistance. Outstanding
corrosion and heat resistance
310SS
950
1050
High Ni and Cr content, with optimal high-temperature
strength with high heat and oxidation resistance.
347SS
900
1000
Contains Nb-Ta for better corrosion resistance than
304SS. Outstanding resistance to fine surface corrosion.
446SS
1050
1125
High Cr steel with outstanding resistance to oxidizing and
reducing atmospheres containing sulfur. Suitable for salt
baths, castings and other high-temperature
environments.
Inconel600
1180
1250
High Cr and Ni steel with outstanding resistance to
oxidizing and reducing atmospheres at high temperature.
Cannot be used in sulfurous atmospheres.

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4.4 Process connection unit
4.4.1 Sheathed cable (MI cable) type
4.4.2 Remote type

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4.4.3 Extended lead wire type
*Note.
1) The minimum process connection unit length is 100mm.(Sheathed cable (MI cable) type, Extended
lead wire type)
2) The minimum extension cable length is 100mm.(Remote type, Extended lead wire type)
3) Please inquire with the manufacturer if you need a different process connection unit.
4) In the case of the extended lead wire tube (tip) type, only thermocouple (TC) is available, and when
ordering with a resistance temperature detector (RTD), please change the model. (See model : R840)

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4.5 Relationship between process connection unit length and head temperature
increase
1) T: Operating temperature
2) Process extension length: Distance between thermowell or process line to.
/ Lead wire connection length: Length of extension cable or extension & compensating wire.
* The process extension length of units installed in explosion proof areas must be sufficient to keep the
temperature increase at less than 20°C
※Caution: When installing a temperature sensor unit to satisfy the surface temperature condition (T6:
85℃), please proceed according to the figure below.

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4.6 Electric parameters
4.6.1 Increased safety (Ex e)
Ui = 30V, Ii = 100mA, Pi = 750mW, Ci = 0.1nF , Li = 0.01mH
Limiting values - special conditions
∙T6: I = 7mA, U max = 30 V, P < 50mW
∙T5: I = 13mA U max = 30 V, P < 100mW
∙T4: I = 26mA U max = 30 V, P < 200mW
∙T3: I = 66mA U max = 30 V, P < 500mW
∙T2: I = 86mA U max = 30 V, P < 650mW
∙T1: I =100mA U max = 30 V, P < 750mW
4.6.2 Intrinsically safe (Ex ia)
Ui = 30 V, li = 50 mA, Ci = 20 nF, Li = 2 mH(for each sensing element)
Pi = see table above(total power for all sensing elements combined)
External connection facilities for the sensor assembly of non connection head types shall be installed
in an enclosure which affords it a degree of protection of at least IP20 and IP65(e)

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5. Installation guide
5.1 Pre-installation checks and precautions
1) Beware of disconnection of the lead wire during storage and transport.
2) Check for disconnection using a tester prior to installation of the product.
3) Use a Megger (Megohmmeter) to measure and confirm that insulation resistance is within normal
range prior to installation of the product.
4) When transporting the sensor assembly to the tank and attaching to the nozzle, avoid applying
external physical force (compression, impact, etc.) on the sheathed cable (MI cable).
5) Check that the protection cover and thermocouple are free of scratches, cut marks, oil or other
contaminants.
(Even tiny amounts of foreign matter can decrease the accuracy of measurements.)
5.2 Installation requirement
1) Do not pull on or push the sheathed cable (MI cable) when installing or disassembling the product.
2) For products attached to comp’ fittings, do not loosen screws during operation. Attach the comp’
fittings to the temperature sensor prior to installation.
3) For products attached to comp’ fittings, be careful not to pull or turn the sheathed cable (MI cable)
when attaching or detaching components with the product in an assembled state. (Can be the cause
of leaks)
4) When installing a temperature sensor in an existing thermowell, inspect the inside of the thermowell
for obstructions before inserting the temperature sensor to prevent damage to the temperature
sensor or sparks due to friction during installation.
5) When installing in direct contact with the process, check that the external loads applied to not cause
deformation of the instrumentation and welded parts.

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6) Additional load and vibration from other elements of the plant can impact the operation of sensor
components. Load from installation in areas with vibration may damage the operation of the sensor
element.
7) The end user must ensure that the instrumental has been appropriately installed so that the allowed
limits are not exceeded.
*Note.
Please consult the thermowell manual for temperature sensor installation conditions and installation
locations.

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5.3 Installation in explosion proof areas
For intrinsically safe explosion protection, an approved power supply device for explosion proof
category [Ex ia] IIC must be used.
Intrinsically safe circuits shall be earthed at one point only. Temperature sensors and apparatuses
must pass dielectric strength testing, and must be insulated and earthed. (Test voltage: 500VAC,
duration: 1 minute, leakage current: <5mA)
Prevent build-up of static electricity on the temperature sensor in explosion proof areas
For increased safety explosion proof units, a certified terminal block must be used. Insertion port
temperature must not exceed 70°C, and lead-in temperature must not exceed 80°C.
Explosion hazard area ( Ex area )
Zone 0, 1, 2
Explosion hazard area ( Ex area )
Zone 1, 2 Non-hazardous area
( Secure area )
Cable entry
Thermowell
Intrinsically safe power
sources or appropriate
barriers
Intrinsically safe power
sources or appropriate
barriers
Intrinsically safe power
sources or appropriate
barriers
Case Box(User's Scope)
Intrinsically safe power
sources or appropriate
barriers

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6. Wiring
6.1 Extension & compensation wire
This type of cable used for temperature measurement.A wire of the same material (extension) as the
thermocouple(TC) or a material having thermoelectric power characteristics as the thermocouple(TC)
is extended to the terminal of the instrument. A compensation wire provides the same temperature
compensation effect as an extension of the thermocouple(TC). Depending on the use environment
and conditions, different insulation and sheathing materials may be used, including low-temperature,
high-temperature, humidity-resistant, oil-resistant, and flex-resistant materials.
6.1.1 Thermocouple(TC)
The wire is made of the same material as the thermocouple(TC), and indicates the same
temperature measurement as the thermocouple(TC).
Temperature is measured using the change in voltage (㎶) according to temperature changes.
Therefore, sufficient consideration must be given to voltage drop when selecting the unit.
6.1.2 Resistance thermometer detector(RTD)
Temperature is measured using the change in resistance (Ω) according to temperature.
Resistance thermometer detector (RTD) cables are selected as 3-wire or 4-wire, and one end of
the shielding wire must be grounded.
Type
Conductor
Insulator
Shielding
Thermocouple (TC)
By thermocouple
type
Glass braiding
Tinned braided wire
Teflon
Teflon
Vinyl (PVC)
Vinyl (PVC)
Resistance
thermometer detector
(RTD)
Tinned copper wire
Glass braiding
Tinned braided wire
Teflon
Tinned braided wire
Vinyl (PVC)
Vinyl (PVC)
1) Extension & compensation wire having specs appropriate for measuring temperature sensor
signals must be selected and used.
2) Voltage flow must be given consideration when deciding cable thickness.

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3) The external covering material must be selected appropriately for the installation environment.
4) If there are outdoor wiring sections, do not use glass sheathing. Humidity may reduce
insulation resistance and cause measuring errors.
5) Cables shall be protected from damage such as breakage or cutting by the surrounding
environment.
6) Exercise caution to prevent folding or knitting of cable.
6.2 Precaution for wiring
1) Make sure to cut off power before wiring product with an explosion proof grade.
2) Connect thermocouples (TC) after checking polarity (+/-). Wire resistance temperature detectors
(RTD) after disconnecting the A/B/B (3-wire) terminal.
3) Attach the end of the compensation wire and cable to the terminal block using crimp terminals.
Tightly fasten the screws.
4) When wiring to a transmitter, adhere to the wiring instructions given in the user manual for the
transmitter.
5) For equipment with an explosion proof grade, make sure the cover does not open during
operation. Tighten the locking apparatus.
6) Earthing
- Use aluminum earthing terminals to prevent corrosion.
- Use 304SS earthing bolts.
- Use spring washers to prevent loosening of the earthing terminals.
- When using external earthing terminals, check the connectors and use an appropriate earthing line.
7) After making the connections, inspect to ensure that the power supply and signal cables have
been connected properly.

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6.3 Terminal block wiring
6.3.1 Thermocouple (TC)
Intrinsically safe (Ex ia)
1) Material : PBT resin
2) Material : Ceramic
Increased safety (Ex e)
Single (2-Wire)
Double (4-Wire)
Single (2-Wire)
Double (4-Wire)
Single (2-Wire)
Double (4-Wire)
B
B(-)
2
A(+)
A(+) B
13
B(-)
B(+)
A A(+)
5
A A(+)
1
B(+)
3
B(-) B
B(-)
4 6
B(-)
B(-)
2
B