Nagano Keiki KJ16 User manual

TY-KJ16-001A
○
エ
INSTRUCTION MANUAL
FOR
PRESSURE TRANSMITTER
MODEL KJ16
2017.6
7.4

TY-KJ16-001A
Cautions for proper and safe operation
To use this product safely, please read this document and the instruction
manual carefully. Incorrect operation may cause malfunction, damage, or an
accident.
The cautions and warnings in the document are indicated by the following:
Indicates that incorrect use may result in severe injury or loss of life.
Indicates that incorrect use may result in risk of injury or property damage.
･Do not apply pressure greater than the maximum allowable
pressure.
This may cause damage or burst of the pressure element and
result injury or damage to the surroundings.
･Do not use this product to measure the object which causes
gas/liquid contact area to corrode.
This may cause damage or burst of the pressure element and release
of the measurement object. It will result in injury or damage to the
surroundings.
･Do not apply excessive weight, vibration or shock.
This may cause damage or burst of the unit and release of the
measurement object. It will result in injury or damage to the
surroundings.
･Use of a non designated power source may cause a fire or electrical
shock.
･Use this device within the operating temperature range.
･Using outside the range of operating temperature may cause
malfunction or damage of the product and result in injury or damage
to surroundings.
･Perform wire connection according to the wire connection faceplate or the
wire connection instructions of the instruction manual.
Incorrect wire connection may cause injury or a fire.
･Use explosion -proof product where the place with risk of existence of
explosive gas.
It may cause ignition or explosion.
･Where the measurement object is oxygen, use oil-proof product.
In case of ordinary product, there is a possibility that oil remains
inside the product. It may cause ignition or explosion by reaction with
oxygen.
･Perform installation carefully according to the installation instructions
of the instruction manual.
･Do not alter this product. Also, do not remodel this product by adding
new functions.
Contact NKS for repairs.
･Since this product is a precision measuring instrument, keep the product as
far away from noise source as possible.
Also, remove noise from the power source by using noise filter, etc.
* If breakdown or malfunction of this product may directly threaten human life
or it may harm human body, please contact NKS in advance.
Warning
!
Caution
!
Warning
!

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CONTENTS
1．Preface ································································ 2
2．Attention······························································· 2
3．Outline ································································· 3
4．Features······························································· 3
5．Specifications
5－1．Model number configuration················································· 3
5－2．General Specification ························································· 4
5－3．Specification of intrinsic safety explosion-proof construction ······· 6
6．Drawing
6－1．Dimensions/ Standard························································· 8
6－2．Connection thread shape····················································· 8
6－3．Dimensions / Tip diaphragm type··········································· 9
6－4．Tip shape dimension··························································· 9
6－5．User side connection dimension / Tip diaphragm type·············· 10
7．Principle of operation ·························································· 10
8．Installation
8－1．Transmitter ······································································11
8－2．Safety barrier ·································································· 12
8－3．Cable ············································································ 12
8－4．【Terminal box type】Precautions······································· 12
9．Wiring
9－1．Suitable transmission cable of terminal box type····················· 13
9－2．Suitable transmission cable of Connector type ······················· 15
9－3．System configuration ························································ 16
9－4．Connection layout ···························································· 16
(1)-1．Barrier model number：KFD2-STC4-Exl···························· 17
(1)-2．Barrier model number：MTL5541····································· 18
(2)-1．Barrier model number：MTL7787+··································· 19
9－5．About intrinsic safety devices and safety barriers···················· 20
9－6．On the wiring of intrinsic safety devices and safety barriers······· 21
10. Precautions
10－1．Precautions for transportation············································· 22
10－2．Precautions for storage ····················································· 22
10－3．Precautions for opening package ········································ 22
11. Operation (Energization)········································· 22
12. Maintenance & Service
12－1．Maintenance ································································· 23
12－2．About the influence by the noise········································ 23
12－3．Service ········································································ 24
13. Warranty ······························································· 25
14. Others ································································ 25

TY-KJ16-001A 2/25
1. Preface
Thank you very much for purchasing this intrinsic safety explosion-proof construction KJ16
pressure transmitter. In order to utilize this product sufficiently, safely and correctly, please
read these instructions manual well.
2. Attention
We shall have no liability for the failure or trouble of this product, or physical injury
resulting from the following:
Modification and repair performed by any person other than our company's
employee.
Trouble of this product caused by the product of any other company.
Misuse that the instructions, use conditions or methods indicated in this instructions
manual are not observed.
Natural disasters, such as a fire, an earthquake, flood damage, and a thunderbolt.
Please do not implement the use, installation, storage, or the work that may damage the
explosion proof in the following environment:
①Apply repetitive pressure outside the rated pressure range.
②Application of the pressure that exceeds the maximum allowable
pressure.
③Use of gases and liquids to corrode wetted parts.
④Installation which may damage the explosion proof of the
intrinsically safe circuit.
・Places exceeding 60 °C of ambient temperature※1
・Places which receive direct sunlight※1
・Places exposed to liquid such as rainwater※2
・Places of the atmosphere containing humidity, salt, sulfur etc.※2
⑤Places exposed to excessive load, vibration, or shock※3
⑥Wiring which may damage the explosion proof of the intrinsically
safe circuit※4
⑦Maintenance & inspection work for this product in a hazardous area
※5
※1 By receiving direct sunlight, the intrinsically safe allowable temperature of 60°C will be exceeded or
the terminal box made of resin will be deteriorated damaging the intrinsically safe protection
performance.
※2 Under the influences of rainstorm, sea breeze, dew condensation, etc, the container can corrode
damaging the intrinsically safe protection performance or the air humidity can permeate into the
container damaging the intrinsically safe insulation performance. Please install in a place without
those influences.
※3 Please do not give an excessive shock or drop to this product during transportation and installation
etc.
※4 Please refer to "9. Wiring "
※5 When checking up this instrument in hazardous area, do not go further than appearance inspection.
Any maintenance check other than appearance inspection shall be conducted in "non-hazardous
area" and never be conducted in hazardous area.
Please avoid electrostatic charging.
WARNING
！

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3．Outline
This product is a pressure transmitter that uses a semiconductor strain gauge for the
pressure detection part and is an intrinsically safe explosion-proof molded type test
certified in accordance with IEC standards technical standards.
Where a combustible gas or a vapor of a flammable liquid (hereinafter referred to as an
explosive gas) is present at a concentration that may cause an explosion or a fire at a
general factory or any other place including a petrochemical plant, You can use it in the
hazardous areas.
In the tip diaphragm type, by placing a pressure sensor element at the tip of the
connection part, it is possible to measure a wide range of media by suppressing the
volume inside the pressure receiving part and the liquid pool.
4．Features
（1） Since this product has the intrinsic safety explosion-proof construction, it can be
used in the hazardous areas of Zone 0, Zone 1 and Zone 2 where almost all
explosive gases exist.
（2） The pressure sensor is the semiconductor vapor deposition type (SS) sensor,
which has record of achievements in the various industrial fields, and has the
integral structure at the semiconductor strain gauge, sensing and the connection
areas. The pressure sensor is also known for its superior durability and stability.
5．Specifications
5-1．Model number configuration
KJ16-□□□
Wetted parts material
Connection thread
Type
Diaphragm Joint
4 : SUS630(17-4PH) SUS316
6 : Co-Ni SUS316
G : SUS316L SUS316L
2 : G1/4B
3 : G3/8B
4 : G1/4B
6 : R1/8 50MPa or less
7 : R1/4 50MPa or less
8 : R3/8 50MPa or less
9 : R1/2 50MPa or less
F : 9/16-18UNF (Made by Autoclave Engineers ,
Equivalent to F250C)
V : G3/8A Tip diaphragm type*1 1～10MPa
6 : Connecter type with 2m shielded cable
7 : Terminal box type (Small)
9 : Terminal box type (Large)
* 1: The tip diaphragm type wetted part material,
"4: Diaphragm SUS 630 (17 - 4 PH) Joint SUS 316" only.

TY-KJ16-001A 4/25
5-2．General Specification
Item
Specification
Standard Tip diaphragm type
1. Pressure range
-0.1～0.5, 1, 2MPa
0～0.5, 1, 2, 3.5, 5, 10, 20, 35, 50, 70,
100MPa
(KJ16-□□G is 35 MPa or less)
0～1, 2, 3.5, 5, 10MPa
2. Allowable maximum
pressure*1
SUS630
CO-Ni
200%
35, 50MPa：150%
70, 100, 120MPa：120% SUS630 200%
SUS316L 150%
3.5～35MPa：120%
3. Accuracy*2 ±0.5%F.S.（at 23℃）±1.0%F.S.（at 23℃）
4. Temperature coefficient
(ZERO,SPAN)
SUS630
CO-Ni
±0.05%F.S./℃(50MPa or less)
±0.1%F.S./℃(70,100MPa) ±0.1%F.S./℃
SUS316L ±0.1%F.S./℃
5. Connection
G1/4B, G3/8B, G1/2B
R1/8, R1/4, R3/8, R1/2 (50MPa or less)
9/16-18UNF (Made by Autoclave Engineers ,
Equivalent to F250C)
G3/8A
(Recommended tightening torque:
30N.m)
6. Wetted parts
Material
Standard Diaphragm
Joint
:SUS630(17-4PH)
:SUS316 Diaphragm
Joint
O-ring
:SUS630(17-4PH)
:SUS316
:Hard NBR
Corrosion
proof use
Diaphragm
Joint
:SUS316L
:SUS316L(35 MPa or less)
High
corrosion
proof use
Diaphragm
Joint
:Co-Ni
:SUS316 EPDM, Fluororubber ,Neoprene etc.
Available
7. Fluid Gas or liquid (Not corrosive to the wetted material)
8. Power supply 24V DC±10%
9. Output 4～20mA DC (2 wire system)
10. Load resistance 500Ωmax.
275Ωmax. (When using the recommended zener barrier)
11 Case material ADC12
12.Protection class Eguivalent to IP65 ( IEC standard)
13. Type Connector type
Terminal box type (Large, Small)
14. Operating temperature
and humidity －10～60℃, 35～85%RH (No freezing or condensation)
15. Storage temperature
and humidity －20～70℃, 35～85%RH (No freezing or condensation)

TY-KJ16-001A 5/25
*1：The maximum allowable pressure is the maximum pressure that does not affect the accuracy of
the pressure range and the performance as it is applied to the temporary. Therefore, it does not
allow to be subjected to repeated impermissible pressure on the pressure sensor.
*2：Accuracy includes linearity, hysteresis and repeatability.
*3：When using the recommended zener barrier (MTL7787+), please pay attention when using it as
the load resistance that the user can connect is 275 Ω. (Including cable and other line resistance)
16. Insulation resistance 100MΩor more (at 50V DC)
17. Applicable Standard RoHS:EU RoHS compliant
EMC:EN61326/1997, A1/1998, A2/2001, A3/2003
18. Weight
Connector type：Approx. 170g (Excluding cable.)
Terminal box type (Large)：Approx.410g
Terminal box type (Small)：Approx.300g

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5-3．Specification of intrinsic safety explosion-proof construction
■KJ16 Pressure Transmitter（Hazardous Area）
1. Type approval
number
Technology Institution of Industrial Safety (TIIS)
Intrinsically safe explosion-proof construction approved product
Type approval number Pressure range
No. TC17811 0～0.5, 1, 2MPa
-0.1～0.5, 1, 2MPa
No. TC17810 0～3.5, 5, 10, 20, 35, 50MPa
70, 100MPa
2. Intrinsic Safety
Explosion-Proof
Construction type
Ｅｘｉａ ⅡＣ Ｔ４
Temperature class
Gas group
Technological standard intrinsically safe
explosion-proof construction
3. Safety maintenance
Rating
Max. allowable voltage of intrinsically safe circuit (Ui)：28V
Max. allowable current of intrinsically safe circuit (Ii)：93mA
Max. allowable power of intrinsically safe circuit (Pi)：651mW
Internal inductance of intrinsically safe circuit (Li)：10μH
Internal capacitance of intrinsically safe circuit (Ci)：0.065μF
Ambient temperature：60℃
4. External
transmission cable
Max. allowable inductance：2.5mH
Max. allowable capacitance：0.015μF
（Differs depending on the barrier used.）
5.Withstand voltage 500V AC, 1min

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■Isolated barrier （Safety area）
The specifications of recommended Isolated barrier (safety barrier) to be combined with
KJ16 pressure transmitter is shown in the table below. Since the isolated barrier is insulated
from the intrinsically safe circuit, intrinsically safe explosion-proof ground contact is
unnecessary.
※ The safety barrier can be selected by the customer.
■Zener barrier （Safety area）
The specifications of recommended Zener barrier (safety barrier) to be combined with KJ16
pressure transmitter is shown in the table below.
※ The safety barrier can be selected by the customer.
Isolated Type
1．Manufacturer Pepperl + Fuchs
K.K.
Cooper Industries
Japan K.K.
2．Type KFD2-STC4-Ex1 MTL5541
3．Type approval number No.C16232 No.TC19435
4．Intrinsic Safety Explosion-Proof Construction type Exia ⅡC Exia ⅡC
5．Safety
maintenance
Rating
Max. allowable voltage of intrinsically safe circuit (Uo) 25.4V 28.0V
Max. allowable current of intrinsically safe circuit (Io) 86.8mA 93.0mA
Max. allowable power of intrinsically safe circuit (Po) 551mW 650mW
Max. allowable inductance of intrinsically safe circuit
(Lo) 4.6mH 4.2mH
Max. allowable capacitance of intrinsically safe circuit
(Co) 0.093μF 0.083μF
Ambient temperature 60℃60℃
6. Safe-area load resistance
intrinsically safe circuit.
800ΩMAX
(at 20mADC)
450ΩMAX
(at 20mADC)
Zener Type
1．Manufacturer Cooper Industries
Japan K.K.
2．Type MTL7787+
3．Type approval number No.TC16447
4．Intrinsic Safety Explosion-Proof Construction type Exia ⅡC
5．Safety
maintenance
Rating
Max. allowable voltage of intrinsically safe circuit (Uo) 28.0V
Max. allowable current of intrinsically safe circuit (Io) 93.0mA
Max. allowable power of intrinsically safe circuit (Po) 650mW
Max. allowable inductance of intrinsically safe circuit (Lo) 3.05mH
Max. allowable capacitance of intrinsically safe circuit
(Co) 0.083μF
Ambient temperature 60℃
6. Safe-area load resistance
intrinsically safe circuit.
270ΩMAX
(at 20mADC)
When Zener barriers are used, it is necessary to establish a single Class A
grounding work with intrinsically safe explosion default.
！CAUTION

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6. Drawing
6-1. Dimensions / Standard
KJ16-6□□(Connector type)
KJ16-7□□(Terminal box type (Small))
KJ16-9□□(Terminal box type (Large))
6-2. Connection thred shape
(3) 9-16-18UNF(Made by Autclave Engineers, Equivalent to F250C)
(1) Parallel thread
KJ16-□F□
(9/16-18UNF)
KJ16-6□□ h:100
KJ16-7□□ h:153
KJ16-9□□ h:172
*1: Please do not use the side screws for case fixing, for grounding connection.
*2: "LC" is printed by laser marking on one side of the joint hexagon for identification of the joint material (SUS 316L).
*1
*1
*2
*2
KJ16-□2□KJ16-□3□KJ16-□4□
(G1/4B) (G3/8B) (G1/2B)
ａ：16 ａ：18 ａ：20
ｈ：115 ｈ：117 ｈ：119
ａ：16 ａ：18 ａ：20
ｈ：168 ｈ：170 ｈ：172
ａ：16 ａ：18 ａ：20
ｈ：187 ｈ：189 ｈ：191
KJ16-7□□
KJ16-9□□
KJ16-6□□
KJ16-□6□KJ16-□7□KJ16-□8□KJ16-□9□
(R1/8) (R1/4) (R3/8) (R1/2)
b：14 b：16 b：18 b：20
ｈ：110 ｈ：112 ｈ：114 ｈ：116
b：14 b：16 b：18 b：20
ｈ：163 ｈ：165 ｈ：167 ｈ：169
b：14 b：16 b：18 b：20
ｈ：182 ｈ：184 ｈ：186 ｈ：188
KJ16-6□□
KJ16-7□□
KJ16-9□□
*2
(2) Taper thread

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6-3. Dimensions / Tip diaphragm type
KJ16-6V4 (Connector type) KJ16-9V4 (Terminal box type (Large))
KJ16-7V4 (Terminal box type (Small))
*1: Please do not use the side screws for case fixing, for grounding connection.
6-4. Tip shape dimension
(1) 1～2MPa Range
(2) 3.5～10MPa Range

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6-5. User side connection dimension / Tip diaphragm type
Shape and dimensions of parallel thread type joint attachment end part and mating port.
[JIS B2351-1 Excerpt from Annex 1 Appendix 7]
G is class A parallel thread for JIS B 0202 pipe.
The O-ring seat surface shall not have axial scratches or spiral tool marks.
The d2 counterbore surface shall be at right angles to the screw axis and flat.
7. Principle of operation
This instrument has intrinsically safe explosion-proof construction and is mainly placed in
hazardous area such as factory plants. It measures pressure and outputs 4 to 20mA DC
through safety barrier placed in non-hazardous area.
The diaphragm of a pressure receiver converts measured pressure into strain. The
amount of the strain is detected by semiconductor strain gauges which are vapor
deposited on the diaphragm.
The detection circuit is full-bridge type in which four sides of bridges are all constructed
with semiconductor strain gauges.
By these bridge circuits, electric signals which are proportional to the strain are generated.
Then they are transmitted as direct-current output of 4 to 20mA DC by amplifier circuit and
output circuit on the next stage. (See the block figure below)
Voltage reference circuit
A
mplifier circuit
Output circuit
d2DIA
d3DIA
A
Thread d2±0.3 d3L
3(min) L4(max) L5(min) L6O-ring
G3/8 28 18.6 12 2 18 2.5 P14
+0.1
0
+0.4
0
d3DIA
O-ring seat face

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8. Installation
8-1．Transmitter
(1) Where the product is connected to the pressure line, do not tight the main body of the
case with pipe wrench, etc. For installation, make sure to use hexagonal part of
connecting screw.
The recommended tightening torque of the tip diaphragm type is 30 N · m
(2) When installing on the pressure line, please do not install in a state that the piping is
filled with liquid. Because the liquid is incompressible, high pressure is generated
when the connection screw is tightened, resulting in equipment failure. When
replacing the existing pressure line or replacing, remove the liquid on the piping
connection side, leave about 15 to 20 mm of air, screw it in and install it.
(3) Although this product has high vibration resistance, since this product is a measuring
instrument, be careful not to apply severe vibration.
(4) Installation position may be vertical,front to back, side to side, or horizontal.
(5) This product has protection code IP65 (JIS C 0920). However for longer use, select a
location that is not affected by direct sunlight, dump, dust, oil or water.
・Please do not give an excessive impact such as bumping or dropping this product when
installing piping at the time of installation.
・Please maintain enough space around the product to allow for maintenance and
adjustment.
・Please do not insert wires, etc., into the pressure feed port. This may damage the
diaphragm and prevent it from operating normally.
・Taper pipe threads should be wrapped with seal tape and leak-free.
・If using straight pipe threads, please check for debris, dirt, and damage to the washer
and seal face before installation to prevent leaks.
・If there is a danger of surge pressure, please concurrently use a damper and joint with
throttle.
・In case of the terminal box type, please do not turn the ground up so as to prevent water
from entering through the cable.
・Always avoid pulling or severely bending cables. Also, during installation, be careful not
to hang the weight of any cables from this product.
・Since earth grounding from the KJ16 main body (Joint part) is necessary, please install
so as to be grounded through pressure piping.
In the unlikely event that earth grounding from the piping is impossible, please ground
using the earth terminal of this product. (Connector type : Cable shielding wire, Terminal
box type : Terminal block number 3 Ground terminal)
However, when both the KJ16 main body and the earth terminal are grounded, please
be careful not to become a two-point grounding that is a potential difference. (Please
connect to 1 point if possible.)
・When the temperature of the measurement medium exceeds the operating temperature
limit, you are requested to implement heat radiation measures such as using a cooling
system or attaching a pipe siphon without directly introducing the measurement medium
into the main body of KJ16 in order to reduce the temperature impact of the
measurement medium.
In addition, when the temperature of the measurement medium is lower than ambient
temperature (when there is a difference from the temperature of the main body), you are
requested to extend piping or take other measures against dew condensation so that
the temperature of the measurement medium is equal to the ambient temperature of the
main body.
！
CAUTION

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8-2．Safety barrier
For details, please see the instruction manual of the purchased safety barrier.
8-3．Cable
The cable to be connected in hazardous area can be selected freely. However, it must
comply with the rating indicated on the barrier and the requirements written in instruction
manual. Especially, inductance and capacitance (Lo/Co) must be strictly observed. If the
cable inductance / capacitance value which is determined by cable size / length exceeds
the indicated rating of the barrier, the certification of intrinsically safe explosion-proof
construction is invalidated.
8-4．【Terminal box type】Precautions when sprinkling water etc. is assumed for the
transmitter
・In order to prevent water intrusion from the gland part (cable taking-out port), this product
should be attached so that the gland part is in the direction of the under surface as
shown in the drawing below. (Recommended attaching direction for this product) In
addition, fasten the gland enough to prevent water intrusion.
*Please refer to "9-1 Suitable transmission cable "
・In the construction of the cable, lower the cable in the direction of the under surface by
one degree as shown in the drawing below and rotate it several times for wiring in the
direction of the top surface in order to prevent water from entering the cable and
accumulating inside. (Carry out wiring so that the cable is lowered in the direction of the
under surface by one degree, regardless of attaching direction.) Moreover, in the case of
using wireway, water intrusion should be avoided as well.
・Atmospheric pressure is introduced into the instrument by way of cable; when the cable is
pressed by a clamp or bushing or extreme bending in the middle of the cable or when the
cable is long, it takes time to exhaust pressure, possibly causing output error due to the
case internal pressure or any change of temperature. Moreover, carry out wiring so that
the cable end is not sealed with taping and adhesive.
・For a transmission cable used between a terminal box type and a safety barrier, be sure
to choose and use the cable of an appropriate outer diameter according to the gland
size. Using a cable suitable to the gland ensures waterproof performance (IPX5 (Anti-jet
type) equivalent). Note that fastening a terminal box cover and building in a lead-in wire
can affect the waterproof performance. In addition, you are requested to check
waterproof performance when using a commercially available gland or cable conduit
instead of attached gland parts.
* IPX5 ( There is no harmful effect of jet water from all directions):
Sprinkle a current of 12.5L/min discharged by a water nozzle of φ6.3 from every
direction (a distance of 2.5 to 3m) for one minute per shell surface area of 1 m2 or for
more than a total of 3 minutes. Confirm that there is no water intrusion (no adverse
effect).
・Since IPX5 equivalent waterproof performance is only guaranteed when the parts are
correctly attached, you are requested to perform sufficient confirmation.
< Recommended installation direction when watering is assumed >
！
CAUTION

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9. Wiring
9-1．Suitable transmission cable of terminal box type
The transmission cable used between Terminal box type product and the safety barrier
(insulated barrier) should be 2-wire shielded cable and should be selected as suitable for
the conditions below.
①The cable's sheath outer diameter suits the cable ground of the terminal box of this product
and the cable's center conductor sectional area suits the internal terminal block of this product.
Moreover, the cable suits the withstand voltage between the cable's conductors (center
conductors) and the withstand voltage between the conductor and the ground.
Type
(Terminal
box)
Terminal port size
(JIS F 8801)
Gasket
inner
diameter
(mm)
Sheath
outer
diameter
（mm）
Core wire
cross
ectional
area
(mm2)
Withstand
voltage
AC（V）
For 1 minute
KJ16-7□□
(Small) G3/8
10a
(standard) 7 6～7
0.25～1.65
500
Between
conductor and
ground)
10b 8
7～8
KJ16-9□□
(Large) G1/2
15a 9
8～9
15b
(standard) 10 9～10
15c 11
10～11
②The allowable parameters specified for the external wiring of the intrinsically safe circuit
（Refer to paragraph 5-3 Specification of intrinsic safety explosion-proof construction）Use the
following:
Allowable capacitance
（μF）
A
llowable inductance
（mH）
0.015 2.5
③For connection to the KJ16 main unit please process the end of the cable according to the
figure below. Peel the cable sheath a specified length. (Box type small : 60mm , Large : 80mm)
Please use R1.25~4 equivalent ( JIS C 2805) for crimp terminal for M4

TY-KJ16-001A 14/25
・Please attach a crimp terminal that always conforms to the core wire
・Atmospheric pressure is introduced into the instrument by way of cable; when the
cable is pressed by a clamp or bushing or extreme bending in the middle of the
cable or when the cable is long, it takes time to exhaust pressure, possibly
causing output error due to the case internal pressure or any change of
temperature. Moreover, carry out wiring so that the cable end is not sealed with
taping and adhesive.
・In the case of using an insulated barrier, from the body of the KJ 16 (fitting part)
Earth ground is required. Please make it so as to be grounded through piping.
・In case earth grounding by piping is impossible, please use earth shielded wire to
ground. However, if both the KJ16 main body and the shielded wire are
grounded, ground one point so that there is no potential difference between them.
④Open the lid of the terminal box
and insert the cable from the
terminal port all the way to the
gasket.
⑤Tighten the ground and close
the terminal port.
⑥Please connect the wire to the terminal block.
The recommended tightening torque to the terminal block is 1.2N.m
・When using bare crimp terminal, please take necessary insulation distance by
insulation tube etc. to prevent exposure of charging part, to prevent electric
shock, short circuit etc.
・Please do not wire connection with moisture adhering to this product. Moisture
etc. intruding into the inside may cause malfunction.
・Be careful not to lose each part when wiring.
⑦Please tighten the lid of the terminal box and tightly seal the terminal box.
・Fasten the cover of the terminal box enough to prevent water intrusion.
Please pass the cable through the
gasket and securely tighten with
"ground" so that there is no
invasion of water.
！
CAUTION
！
CAUTION
Charging
part
Insulation distance
Insulation
tube
！
CAUTION
！
CAUTION

TY-KJ16-001A 15/25
⑧About the waterproofness of the wiring introduction part
This product ensures waterproof performance by using a cable with an appropriate outer
diameter according to the ground size. Tightening the lid of the terminal box and incorporating
the wiring introduction section will affect the waterproof performance, so please pay close
attention. In addition, when using the supplied ground parts and commercially available ground,
cable conduit, etc., we ask the customer to check the waterproof performance.
・Protection class equivalent to IP65 is guaranteed only when parts are correctly
installed.
9-2．Suitable transmission cable of Connector type
①Cable specification with connector
Specifications of cable with connector for wiring are as follows.
・Common specification
Plug used ： TC1108-12A10-7F(6.3) （TAJIMI ELECTRONICS CO., LTD.）
・Cable specification
When the cable sheath is peeled off, since the inside of the cable body is 4 wires, there are
green and blue wires other than red and white, but green and blue wires are not used. (No
internal connection)
Ambient
temperature
Core wire Cable outer diameter
(mm)
cross-sectional
area (mm2)
Constitution
(Number/mm)
Shield cable (standard) －20～60℃0.2
(AWG25) 7/0.18 φ6.2
Heat resistant cable －20～105℃0.3
(AWG23) 12/0.18 φ6.0
Cold-resistant cable －40～80℃0.3
(AWG23) 12/0.18 φ6.0
②Cable specification with connector
Insert the supplied cable with connector into this product and tighten it until the nut does not
move with your hand. (Tightening torque: 3.92 N · m)
· Insufficient tightening may cause waterproof performance, so tighten enough until
the nut does not move.
* 1: When using an insulation type barrier, it is necessary to earth ground from the
KJ16 main body (joint part), so please install it so that it is grounded through piping.
In the unlikely event that earth grounding from piping is impossible, please use the
shielded wire to ground the earth. However, when both the KJ16 main body and the
shielded wire are grounded, please make one point ground so as not to generate a
potential difference.
！
CAUTION
！
CAUTION

TY-KJ16-001A 16/25
9-3．System configuration
1. Isolated barrier
* 1: It is necessary to earth ground from the KJ16 main body (joint part), so please install it so that it is
grounded through piping.
In the unlikely event that earth grounding from piping is impossible, please use the
shielded wire to ground the earth. However, when both the KJ16 main body and the
shielded wire are grounded, please make one point ground so as not to generate a
potential difference.
2. Zener barrier
9-4．Connection layout
1. Isolated barrier
As shown in the wiring diagrams on the following pages, place the safety device (KJ 16) in
a hazardous place, securely hold the equipment (insulated barrier), general equipment
(supply power, receiver) in a non-hazardous place and connect .
In addition, when purchasing an insulated barrier, it is not necessary to singly provide
Class A grounding for intrinsic safety. For connection details and other details, please
refer to the product instruction manual purchased.

TY-KJ16-001A 17/25
(1)-1. Recommended barrier：Pepperl + Fuchs wiring examples
Barrier model number：KFD2-STC4-Exl
Note）Cable size : AWG14~24
* 1: It is necessary to earth ground from the KJ16 main body (joint part), so please install it so that it is
grounded through piping. In the unlikely event that earth grounding from piping is impossible, please
use the shielded wire to ground the earth. However, when both the KJ16 main body and the shielded
wire are grounded, please make one point ground so as not to generate a potential difference.
Connecter Terminal box
1A(Red)1
3 C (White) 2
Earth E (Shield) 3
7
8
14
15
Terminal number
of barrier
Equipment Equipnement terminal
Power supply Power (+)
Power (-)
KJ16
Receiver gauge Output (-)
Output (+)

TY-KJ16-001A 18/25
(1)-2. Recommended barrier：Cooper Industries Japan K.K. wiring examples
Barrier model number：MTL5541
Note）Cable size : AWG14~24
* 1: It is necessary to earth ground from the KJ16 main body (joint part), so please install it so that it is
grounded through piping. In the unlikely event that earth grounding from piping is impossible, please use
the shielded wire to ground the earth. However, when both the KJ16 main body and the shielded wire are
grounded, please make one point ground so as not to generate a potential difference.
Connecter Terminal box
1 A (White) 2
2C(Red)1
Earth
E (Shield) 3
11
12
13
14
Terminal number
of barrier
Equipment Equipnement terminal
Power supply Power (-)
Power (+)
KJ16
Receiver gauge Output (-)
Output (+)