Shinkawa WK Series User manual

MANUAL NO. 20101E2.6
Published in Jul. 2001
Revised in Aug. 2008
WK SERIES
WK- 142 K 2-WIRE VIBRATION TRANSMITTER
INSTRUCTION MANUAL

SAFETY CONVENTIONS WK
i
For Use in Safety.....
Thank you for your using our WK Series Transmitter.
SHINKAWA Sensor Technology applies strict quality control and inspections to ensure the high reliability of
its products.
The WK Series Transmitter Instruction Manual contains descriptive information , specifications, principle of
operation, installation procedures and field wiring.
Please study contents of this manual and related manuals thoroughly before installing or operating the
equipment, and keep it handy for future reference.
! CAUTION
1. If insulation resistance (Megger) test is made on the signal cable between transmitter and
other equipment, disconnect the cable from transmitter and other equipment.
Be sure to discharge the charged electric load before connecting the cable to the transmitter.
If this caution is not adhered to, the transmitter and other equipment could be damaged.
2. The connector connecting the sensor cable and the extension cable shall be insulated with
the attached insulation sleeve (transparent shrink tube) or fluoro resin insulation tape.
The vinyl-insulating tape shall not be used, which may cause the wiring trouble in the case of
the temperature more than 80°C.
3. Do not measure insulation resistance and withstand voltage other than those at places
specified.
If measured, transmitter damage may result.
4. Before collecting data to check output characteristics, set gap, etc., warm up the transmitter
for more than 5 minutes to stabilize the output after the power is turned on.
5. Do not remodel this unit without permission. Otherwise the guarantee can not be made.
6. This unit is designed for use by specialists or persons thoroughly familiar with the field.
7. Make sure that the end user receives the Instruction Manual delivered with this unit.
8. Imput impedansce of test equipment which is connected to gap out terminal should be more
than 1 MΩ.
9. To connect a grounding type equipment to gap out terminal directly my cause false output.

FOREWORD WK
ii
Make it a rule to follow the instructions given in this manual.
This manual contains important information designed to prevent personal injury and property damage, and
ensure safe operation of the equipment.
Familiarize yourself with the signs and symbols explained below before proceeding to read the manual, and
observe the instructions given.
■Explanation of signs
Symbols Explanation
WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death
or serious injury.
CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury. It may also be used to permit for property-damage-only accidents.
◊"Serious injury" refers to such injuries as loss of eyesight, injuries, burns (due to heat or cold), electric
shock, fractures, and poisoning, that have permanent aftereffects and require hospitalization or long-term
outpatient treatment.
◊"Moderate or minor injury" refers to such injuries as burns and electric shock that do not require
hospitalization or long-term outpatient treatment. "Property-damage-only accidents" refers to
consequential damage related to destruction of property and damage to the equipment.
■Explanation of symbols
Symbols Explanation
Indicates a prohibited action.
Details are given in the text next to the symbol.
Indicates a mandatory action.
Details are given in the text next to the symbol.

FOREWORD WK
iii
To ensure safe use of this equipment, strictly observe the safety precautions provided in this manual, as well
as installation methods and methods of use stipulated by laws and regulations. SHINKAWA Sensor
Technology will not be liable for damage, etc. due to methods of use contravening to the instructions provided
here.
■Safe use
WARNING
Make sure to ground.
May cause electric shock or malfunction.
Make sure to turn the power off before any wiring work.
Will cause electric shock.
CAUTION
Make sure that the supply connected to the Power / Output terminal has
the specified voltage.
Will cause damage and malfunction of the instrument.
The equipment is a precision instrument.
Take care not to expose it to excessive shock or vibration.
Do not change the parameter settings during operation.
May cause unexpected alarm output.
Do not measure insulation resistance and dielectric strength other than
those at places specified.
Will cause damage to the instrument.
Do not remodel this monitor unit without permission.
Otherwise the guarantee can not be made.
PROHIBITION
Connect earth wire
PROHIBITION
MANDATORY
PROHIBITION
PROHIBITION
PROHIBITION

FOREWORD WK
iv
■EMC(Electro-magnetic compatibility)
The EMC of WK series transmitter is evaluated by various noise tests.
However, its characteristics may vary with on environmental conditions such as the magnitude of noise,
ambient temperature, humidity and the arrangement of equipment.
For the above reason, when operating the system, please observe the following CAUTION.
CAUTION
The transmitter should be operated by specialists or people who have its
knowledge.
When a shielded cable is used, the length of the unshielded cable section
should be less than 100mm (3.937in REF.).
For each relay used near this system, devices related to this system or
signal cables connecting the system and these devices, install a surge
killer.
The transmitter should be put into the EMC shield enclosure, if the
transmitter is installed at noisy surroundings. And the enclosure should be
grounded for EMC shield grounding.
The signal transmitter cable, sensor cable and extension cable should be
lay into the metal conduit, if the cable passes through noisy surroundings.
And the conduit should be grounded for EMC shield grounding.
In order to prevent the system from its malfunction when the system fails,
provide the systematic interlock function.
Do not wire signal transmitter cables, sensor cable and extension cable in
parallel with control and power cables.
It is recommended that separated wire ducts be used for these cables.
Do not use any radio equipment near the system.
MANDATORY
MANDATORY
MANDATORY
MANDATORY
MANDATORY
PROHIBITION
PROHIBITION
MANDATORY

FOREWORD WK
v
■Noise filter
Noise transmitted through in each cable may be rejected to some extent by inserting a ferrite core in the cable
(note 1).
If the cable passes through noisy surroundings, it is recommended that such a noise prevention device is used.
(note 1) ZCAT3050-1330 : TDK

TABLE OF CONTENTS WK
vi
FOREWORD
1. GENERAL INFORMATION
1.1 GENERAL -------------------------------------------------------------------------------------- 1
1.2 RECEIVING INSPECTION ------------------------------------------------------------------ 1
1.3 STORING ---------------------------------------------------------------------------------------- 1
2. SPECIFICATIONS
2.1 STANDARD SPECIFICATIONS ---------------------------------------------------------- 2
2.2 OUTLINE DRAWING AND MODEL CODE --------------------------------------------- 3
3. INSTALLATION
3.1 SYSTEM COMBINATION ------------------------------------------------------------------ 5
3.2 SENSOR INSTALLATION CONSIDERATIONS ------------------------------------- 5
3.3 RELATION BETWEENTARBGET SHAPE AND SENSOR ------------------------- 6
3.4 EFFECT OF INSTALLING CONDITIONS ----------------------------------------------- 6
3.5 WK TRANSMITTER INSTALLATION --------------------------------------------------- 8
4. INTERCONNECTION
4.1 INTERCONNECTION OF SYSTEM COMPOSITION PARTS -------------------- 9
4.2 CONNECTOR INSTALLATION ------------------------------------------------------------ 9
4.3 CONNECTION OF SIGNAL TRANSMITTER CABLE-------------------------------- 10
4.4 WIRING------------------------------------------------------------------------------------------- 11
5. CALIBRATION
5.1 CALIBRATION---------------------------------------------------------------------------------- 13
6. MAINTENANCE/INSPECTION
6.1 PERIODIC INSPECTION -------------------------------------------------------------------- 14
6.2 TROUBLESHOOTING------------------------------------------------------------------------ 15
7. CHARACTERISTICS DATA
7.1 STANDARD STATIC CHARACTERISTICS -------------------------------------------- 16

1. GENERAL INFORMATION WK
-1-
1.1 GENERAL
Model WK-142K 2-Wire Vibration Transmitter is most suitable measuring system for shaft vibration of rotating
machinery and the system consists of WL sensor, WW extension cable and WK transmitter.
It detects displacement (gap) between sensor and observed material (target) precisely without physical contact with
target by the eddy current principle, and outputs voltage proportioned to gap from gap out terminal and BNC
connector. Vibration amplitude can be measured by 4 to 20 mA output as consumption of current loop.
1.2 RECEIVING INSPECTION
When the unit is received, inspect it for damage suffered in transport and check whether it is the item you ordered.
In the unlikely event that it was damaged in transport or does not function according to specifications, please
contact the SHINKAWA Office or dealer nearest you.
1.3 STORING
Store the unit under the ambient conditions given in the specification.
Avoid places where it is exposed to high humidity or corrosive gases.

2. SPECIFICATIONS WK
-2-
2.1 STANDARD SPECIFICATIONS
Current Output
4 to 20mA
OUTPUT RANGE
0 to 100µm pk-pk
0 to 125µm pk-pk
0 to 200µm pk-pk
0 to 250µm pk-pk
0 to 400µm pk-pk
4 to 20mA OUTPUT
CONVERSION
ACCURACY
±1.5 % of Full Scale Range
(From test signal input pin to current output)
MAX. LOAD
REGISTANCE
43.5 × (Vps-12) ( (Vps=Power supply voltage)
NOT-OK FUNCTION Current output : 3.6mA or less.
Not-OK condition : Open or short of sensor,
Outside of linear range.
Delay time to resume ; 2 to 3 seconds after
Not-OK condition is removed.
GAP Output
(Wave form output)
CALIBRATION
MATERIAL
JIS SCM440 FLAT (AISI 4140 equivalent )
LINEAR RANGE* 1.4mm (Gap : 0.3 to 1.7mm)
SCALE FACTOR* 7.87mV/µm
SCALE FACTOR
ERROR*
7.87mV/µm±6.5% typ.
(including interchangeability errors)
Step : 200µm, Target : 30 mm dia.
OUTPUT
IMPEDANCE*
10kΩ(It is calibrated load impedance at 10MΩ)
System
1. CALIBRATION MATERIAL
MODEL WK-142K 2-wire Vibration Transmitters are calibrated with
JIS SCM440 (AISI 4140 equivalent) flat surface (more than 15 mm
dia.).
It is not calibrated with any other target.
2. CONNECTOR ISOLATION, etc.
The connector connecting the sensor cable and the extension cable
shall be insulated with the attached insulation sleeve (transparent
shrink tube) or fluoro resin insulation tape.
The vinyl-insulating tape shall not be used, which may cause the
wiring trouble in the case of the temperature more than 80°C.
The connector shall not be located in the oil environment.
The oil penetration to cable through the connector may cause the
sensitivity change, due to the change of the cable capacitance.
3. MEGGER TEST OF SIGNAL CABLE
If megger test is made on the signal cable (2-wire shielded cable), be
sure to discharge the charged electric load before connecting the
cable to transmitter.
If this caution is not adhered the transmitter could be damaged.
4. WIRING BETWEEN GAP OUT TERMINAL AND EQUIPMENT
a). Non-grounding type equipment
Connect directly with coaxial cable within 3 meters long.
b). Grounding type equipment
Use an isolator between the transmitter and the equipment.
Use coaxial cable within 3 meters long between the transmitter
and the isolator.
5. SENSOR INSTALLATION
Not available for rainwater at out door use.
It may cause the sensitivity change and insulation down.
FREQUENCY
RESPONSE*
5Hz to 6,000Hz (+0dB, -3dB) at 900µm Gap
TEMPERATURE
RANGE OF
TRANSMITTER
Operating : 0 to 70°C(32 to 158°F)
Storage : -34 to +100°C(-29 to +212°F)
TEMPERATURE
RANGE OF SENSOR
AND EXTENSION
CABLE
Operating : -34 to +177°C (-29 to +350°F)
(Connector : Max. 125°C (257°F))
Storage : -34 to +177°C (-29 to +350°F)
(Connector : Max. 125°C (257°F))
RANGE OF
TEMPERATURE AT
EXPLOSION PROOF
CONSTRUCTION
CSA,ATEX :
0 to +70°C (Sensor, Ext. Cable &Transmitter)
RELATIVE HUMIDITY 95%RH (non condensing)
POWER SUPPLY
VOLTAGE
12 to 35VDC
SENSOR TIP
DIAMETER
Approx. 5.5mm (0.217 inch) dia.
CABLE DIAMETER Approx. 2.7mm (0.106 inch) dia.
CONNECTOR
DIAMETER
Approx. 7.1mm (0.280 inch) dia.
SYSTEM CABLE
LENGTH
5m or 7m
TRANSMITTER SIZE (L) 100mm × (W) 74 mm × (H) 50 mm
(3.94 in) (2.91 in) (1.97 in)
Mass : Approx. 530g (1.2 lb)
*The above specifications apply at 25°C with 24VDC power supply and
SCM440 (AISI 4140 equivalent) steel flat target.
Other
SPECIFICATIONS NOTICE
CONFIGURATION
WL Sensor WW Extension Cable
WK Transmitter
Connecto
r
System Cable Length : 5m or 7m
30101E1.9

2. SPECIFICATIONS WK
-3-
2.2 OUTLINE DRAWING AND MODEL CODE
2.2.1 WL SENSOR
1) OUTLINE DRAWING
2) MODEL CODE
2.2.2 WW EXTENSION CABLE
1) OUTLINE DRAWING
2) MODEL CODE
WL-142K05 - / NB1
Armor Thread size Unthreaded length* (L1) Case length* (L2) Cable length (L3) Non-incendive
M1 M8 X 1 1 0.5m 1
CSA:Class Ⅰ
Div.2
Gr.A,B,C,D
ATEX:EEx nAⅡ
T6
M2 M10 X 1
10mm step, 0 to 230mm
e.g.) 06=60mm, L1≤L2-20mm
10mm step, 20 to 250mm
e.g.) 25=250mm
2 1.0m
A
With
(Without Fluoro resin
coating)
U1 1/4-28 UNF-2A 3 5.0m
U2 3/8-24 UNF-2A
0.1 in step, 0 to 9.2in
e.g.) 04=0.4in, L1≤L2-0.7in
0.1in step, 0.8 to 9.9in
e.g.) 35=3.5in 4 7.0m
T
With
(With Fluoro resin
coating)
* inch for UNF-2A thread
mm for M thread
L Without
Dimensions : mm (inch)
3.0
L1
3.2
5.0
L2
L3 +30%
- 0%

7.1

5.5
Sensor tip
Jam nut
Thread
Wrench flat.
Flexible armo
r
Coaxial cable

2.7
Coaxial
co
nn
ector
Model code
Serial No.
Sensor side

2.7

6.8

8.0

7.1
Transmitter side
L+30%
- 0%
Coaxial cable
Coaxial connector Coaxial connector
Flexible armor
Dimensions : mm (inch)
(0.22) (0.11) (0.28)
(0.20)
(0.12)
(0.13)
(0.28) (0.27)
(0.31)
(0.11)
WW-142K
Armor Extension cable length
(L) Non-incendive
A With (Without Fluoro resin coating) 1 4.0m 1 CSA:Class ⅠDiv.2 Gr.A,B,C,D
ATEX:EEx nAⅡT6
T With (With Fluoro resin coating) 2 4.5m
L Without 3 6.0m
46.5m
- / NB1

2. SPECIFICATIONS WK
-4-
2.2.3 WK TRANSMITTER
1) OUTLINE DRAWING
2) MODEL CODE
3) NAME PLATE
4) SIDE LABEL
A) Model code
B) 4 to 20mA Output range
C) System length
D) Serial number
E) Tag. Number (Option)
ZER
O
S
PAN
TE
S
T PIN
(Front) (Reverse)
!
GAP OUT
2-wire
Transmitter
Remove label for ZERO and SPAN adjust
CAUTION
Grounded AC powered equipment
can cause false alarm.
Do not connect it to GAP OUT.
SENSOR
74
63.5
Logo
Sensor Input Connector
70 (2.76)
Name plate
Power / Output
Gap out
4- φ 4.3 Model code and Ser.No.
9(0.354)
(2.91) (2.50)
(0.169)
Gap out
100 (3.94)
25.5
50
(1.97)
(1.00)
Insulator Dimensions:mm (inch)
DIN Mounting Clips
(
O
p
tion
)
C)
WK-142K1 - 2
5m system Vibration:0-125µm pk-pk
Ser.No. AV01234 Tag.No. 1234-01
D) E)
A)
B)
/ NB1 /DNC/ CEM
WK-142K
System Cable length Output Range Non-incendive With DIN Mounting Clips CE marking
1 5m 1 0 to 100µmpk-pk 1 CSA:Class ⅠDiv.2 Gr.A,B,C,D
ATEX:EEx nAⅡT6
2 7m 2 0 to 125µmpk-pk
3 0 to 200µmpk-pk
4 0 to 250µmpk-pk
5 0 to 400µmpk-pk
-

3. INSTALLATION WK
-5-
3.1 SYSTEM COMBINATION
WL Sensor WW Ex. Cable System length WK Transmitter
0.5m 4.5m 5m WK-142K1
0.5m 6.5m 7m WK-142K2
1.0m 4.0m 5m WK-142K1
1.0m 6.0m 7m WK-142K2
5.0m None 5m WK-142K1
WK-142K
System Combination
7.0m None 7m WK-142K2
3.2 SENSOR INSTALLATION CONSIDERATIONS
The system provides a linear range of 1.4 mm (a gap of 0.3 to 1.7 mm between sensor and target) and is calibrated
for JIS SCM440 (AISI 4140 equivalent) as a standard target material. The system can measure the gap in the linear
range. Recommended standard setting gap is 0.9 mm.
! CAUTION
1. Install and fix the sensor to keep the gap within the linear range to
prevent contact with target or out of linear range.
2. Be careful not to damage or scratch the sensor tip and target
surface with thickness gauge.
Take care the effect for output characteristics by the relation between target shape and sensor or installing condition
with reference to 3.3 and 3.4.
! CAUTION
1. The existence of other metals than the target near the installed
sensor and/or inadequate sensor installing position may impede
correct measurement.
WL Senso
r
WW Extension WK Transmitte
r

3. INSTALLATION WK
-6-
3.3 RELATION BETWEEN TARGET SHAPE AND SENSOR
a)
b) c)
3.4 EFFECT OF INSTALLING CONDITIONS
a) b)
c) d)
e) f)
g) h)
5 mm
Distance X>8mm
No effect and best installation.
Distance X>8mm
Y>15mm
No effect and best installation.
Same as b). Such
Insulating material as
Resin is filled
in the slant line section.
No effect
Distance X<8mm
There is effect.
When the sensor
Neighborhood is
Countersunk.
There is effect
Distance Y<15mm
There is effect.
Gap X<0.3mm
Too close to measure
because of dead zone.
Gap X1Gap X2
There is effect.
X
Target
Mounting Plate
X
Y
Mounting Plate
Target
Mounting Plate
Target
X
Target
Mounting Plate
Mounting Plate
Target
Y
Mounting Plate
Target
X
Target
Mounting Plate
X2
X1
Mounting Plate
Target
d>15mm no effect
X>7.5mm no effect
Mounting Plate
d
x
d>50mm no effect X>7.5mm no effect
Mounting Plate
X
Casing
Target
d Target

3. INSTALLATION WK
-7-
The installing effect are as shown below.
As the above results show, it is most preferable to install the sensor as shown in a) to c). However if the sensor is
required to be installed as shown in d) to f), calibration in installed conditions is necessary.
Also, the dead zone as shown in the above should be noted.
! CAUTION
The following conditions must be met to ensure accurate vibration detection.
1. The target surface must be more than 3 times the sensor tip diameter (fig.
3.1(a)).
2. There must not be any conductive materials within a range of 3 times the
sensor tip diameter (fig. 3.1(b)).
3. To avoid mutual interference between sensors, a minimum distance
corresponding to 5 times the sensor tip diameter must be maintained
between sensors (fig. 3.1(c)).
4. Use a sufficiently rigid installation method to prevent vibration of the
sensor itself (fig. 3.1.(d))
5mm
25mm
25mm
15mm
(a)
(c)
15mm
(b)
(d)
Fig.3-1
Distance(µm)
d) to f)
a) to c)
h)
Dead zone
Output(V)

3. INSTALLATION WK
-8-
3.5 WK TRANSMITTER INSTALLAION
• Make sure to install and fix the transmitter.
When installing the transmitter, avoid a place with high vibration,
instability, high temperature and much moisture as well as high-density
corrosive materials.
3.5.1 INSTALLATION WITH SCREWS
Install and fix with screws using each hole at the four
corners as shown in dextral figure.
• Do not use screws other than attached as standard
accessories, Or the transmitter may be influenced of
the noise because of grounding the body.
Tightening Torque 1.18N･m (12kgf･cm) or less
3.5.2 DIN Mounting Clips
(When fixing DIN mounting clips by user.)
When user fixes DIN mounting clips before using, screw up and fix the DIN mounting clips on the bottom
surface of WK transmitter with insulation bushings and screws as shown below.
! CAUTION
Use the insulation bushing and washers
to prevent earth fault via DIN rail.
Make sure to use the insulation bushing
and washers.
3.5.3 INSTALLATION ON DIN RAIL
Refer to following figures to mount on and remove from DIN rail.
Screw
1
2
1
2
Mounting on DIN rail Removing from DIN rail
DIN mounting clip
Insulator
Screw
Insulation convexity
bushing
Insulation flat washer

4. INTERCONNECTION WK
-9-
4.1 INTERCONNECTION OF SYSTEM COMPOSITION PARTS
! CAUTION
1. Before tightening the connector, the connector internal should be checked to confirm
that there is no foreign particle, which may cause the bad characteristics due to the
imperfect contact.
2. As the connector needs to be firmly tightened to avoid looseness after being tightened,
it is recommended that the connector be tightened by the following torque.
Tightening torque : 0.92N･m ±0.1N･m (9kgf･cm ±1kgf･cm)
3. Beware not to apply the excessive force on the thread part of the connector, which
may cause the damage.
4. After tightening connector, make sure that the cable torque does not cause the
connector to loosen again.
If the installation conditions cannot be changed to prevent this force acing on the
connector, the force should acts in the tightening direction of the connector.
If the installation direction of the extension cable is such that a force acts in loosening
direction of the connector, twist the extension cable lightly in the direction of that the
resulting repulsive force acts to tighten the connector. Then connect the connector
and tighten.
(SHINKAWA Electric recommends to take up the surplus length of the extension cable by
winding it into a cable box. If the excessive extension cable needs to be accommodated in the
housing for some unavoidable reasons, do not push it forcibly in the housing, and also do not
cut it.)
4.2 CONNECTOR INSTALLATION
When installing sensor and extension cables, cover coaxial connector with insulation sleeve (transparent shrink tube)
for ground insulation and insulation to flexible armor (option).
Step 1) Pass connector through insulation sleeve.
Step 2) Connect connector.
(1) Check that no foreign substance is present in the connector.
(2) Insert connector male connector into female connector.
(3) Tighten the collar by fingers.
Step 3) Cover connector with insulation sleeve.
Step 4) Carefully apply heat to shrink insulation sleeve.
•If insulation sleeve tubing is not available, wrap the connector with
insulating material such as fluoro resin tape.
! CAUTION
The vinyl-insulating tape shall not be used, which may cause the wiring
trouble in the case of the temperature more than 80°C (176°F).
Insulation sleeve

4. INTERCONNECTION WK
-10-
4.3 CONNECTION OF SIGNAL TRANSMITTER CABLE
•For interconnection between the WK transmitter and other equipment,
make sure to use 2-core shielded cables or pair shielded standard
2-wire instrument cables, since the signal transmitted is weak.
! CAUTION
Do not use unshielded cables or non-pair shielded multicore cables as
the measured values could be affected by external noise.
4.3.1 RECOMMENDED CABLES
Cable Recommended Note
2-core shielded cable
EXCELLENT
Normal :
Silver plated braid.
Recommended:
Copper tape shield.
(Core wire : Soft copper wire)
Use conduit pipe (cable rack) for wiring.
Instrument cable
GOOD
Vibration and displacement signals can exit in
one instrument cable.
A high amplitude vibration signal exerts injurious
influence over other displacement and vibration
signals in a common cable.
Therefore, separate cables must be used.
Recommended:
Outside shield of aluminum or copper tape.
! CAUTION
1. For cable wiring for pulse signals (phase marker, revolution) separate them from cables for
vibration transmitter signals.
2. Avoid running signal transmission cables together with control and power cables.
3. Install all cables in conduit pipes or on cable racks.
4. After the megger test of the signal cable, discharge the charged electric load before
connecting the cable.
If this caution is not adhered to, the transmitter and connecting equipment could be
damaged.
Conduit pipe
Shield wire
Conduit pipe
Shield wire
Outside shield

4. INTERCONNECTION WK
-11-
4.4 WIRING
The loop resistance is the total resistance of the
power supply output, the receiver, field wiring, and
any other devices placed in the loop. Use following
equation to determine the maximum loop resistance:
Operation outside of the operating region shown
above may result in erratic system behavior.
Use the following wiring diagrams to connect the field wiring between the transmitter and the monitoring
instruments.
Receiver Receiver
1000
500
0
Maximum Loop Resistance
Power Supply Voltage
353025201512
(VPS)
(Ω)OPERATING REGION
RLOOP = 43.5 x (VPS-12) Ωmax.
+
++
Cable Shield *
Power Supply
VPS = 17 to 35 VDC
Receiver
+
+
+
Cable Shield *
Power Supply
VPS = 17 to 35 VDC
Receiver
+
+
Cable Shield *
+
Power Supply
VPS = 17 to 35 VDC
+
* Recommended wiring is shielded.
Twisted pair. 1.0 mm2(18 AWG) (ordered separately)
Max. length = 1 km (0.62 miles)
Common (Ground)
Common (Ground)
Common (Ground)

4. INTERCONNECTION WK
-12-
Use the following wiring diagrams to connect to the GAP OUT terminals,
Receiver
+
+
Cable Shield *
Common (Ground)
Receiver
+
++
Cable Shield *
Power Supply
VPS = 17 to 35 VDC
Battery Powered Test Equipment
(Non-grounding type equipment)
With 1 MΩMin. Isolated Input.
(Output will drop approximately 1 % down.)
Isolator
Grounding type
Equipment
Common (Ground)
Battery Powered Test Equipment
(Non-grounding type equipment)
With 1 MΩMin. Isolated Input.
(Output will drop approximately 1 % down.)
* Recommended wiring is shielded.
Twisted pair. 1.0 mm2(18 AWG) (ordered separately)
Max. length = 1 km (0.62 miles)

5. CALIBRAION WK
-13-
5.1 CALIBRATION
5.1.1 ADJUST ZERO POTENTIOMETER
1) Set a gap between sensor and target in 1.0 milimeters.
2) Adjust zero potentiometer with no test signal.
5.1.2 ADJUST SPAN POTENTIOMETER
1) Set a gap between sensor and target in 1.0 milimeters.
2) Connect a oscillator output to test signal input pin and COM terminal of output terminal block.
3) Adjust span potentiometer with full scale test signal.
! CAUTION
Oscillator does not connect to ground.
Test Signal
none 4 mA 1 V
F.S. Test signal*
(OSC. Output)
100 µ m 787 mV pk-pk
125 µ m 984 mV pk-pk
200 µ m 1,574 mV pk-pk
250 µ m 1,968 mV pk-pk
400 µ m 3,148 mV pk-pk
20 mA 5 V
SPAN Adjust Potentiometer
Refer to 5.1.2
ZERO Adjust Potentiometer
Refer to 5.1.1
Test Signal Input Pin
Refer to 5.1.2
Do not change.
Manufacturer use only.
Remove name plate.
TARGET
1 mm
V
A
250 Ω
1 mm
TARGET
V
A
250 Ω
OSCILLATOR
A
V
A
V
* Sin. wave =300 Hz