WK SERIES WK-142K 2-WIRE VIBRATION TRANSMITTER

TRANSMITTER

SPECIFICATIONS Page 1 of 2

SPECIFICATIONS NOTICE
No entry if additional

Current Output 1. CALIBRATION MATERIAL

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

CONFIGURATION

WK Transmitter

WL Sensor WW Extension Cable

Connector

System Cable Length : 5m or 7m

6H17-017 Rev.3
Issued Apr. 2017
Revised Mar. 2021
 WK SERIES WK-142K 2-WIRE VIBRATION TRANSMITTER
TRANSMITTER

SPECIFICATIONS Page 2 of 2

No entry if additional
Model Code / Additional Spec. Code( spec. code is not specified. )

● Transmitter
WK-142K ＊ - ＊ / NB ＊ /DNC

System Cable length Output Range Non-incendive With DIN Mounting Clips
1 5m 1 0 to 100μmpk-pk CSA C/US:
2 7m 2 0 to 125μmpk-pk 1 Class , Division 2, Groups A,B,C and D
3 0 to 200μmpk-pk ATEX:Ex nAⅡT4 Gc
4 0 to 250μmpk-pk 8 KTL:Ex nAⅡT4
5 0 to 400μmpk-pk C TR-CU:2Ex nAⅡT4 Gc X

● Extension Cable

WW-142K ＊ - ＊ /NB ＊

Armor Extension cable length Non-incendive

A With (Without Fluoro resin coating) 1 4.0m CSA C/US:
T With (With Fluoro resin coating) 2 4.5m 1 Class , Division 2, Groups A,B,C and D
L Without 3 6.0m ATEX:Ex nAⅡT4 Gc
4 6.5m 8 KTL:Ex nAⅡT4
C TR-CU:2Ex nAⅡT4 Gc X

● Sensor
WL-142K05 ＊ - ＊＊ ＊＊ ＊＊ ＊ /NB＊

Cable length
Armor Thread size Unthreaded length* (L1) Case length* (L2) Non-incendive
(L3)

With M1 M8 X 1 10mm step, 0 to 230mm 10mm step, 20 to 250mm 1 0.5m CSA C/US:
A (Without Fluoro resin M2 M10 X 1 e.g.) 06=60mm, L1≤L2-20mm e.g.) 25=250mm 2 1.0m Class , Division 2,
1
coating) U1 1/4-28 UNF-2A 0.1 in step, 0 to 9.2in 0.1in step, 0.8 to 9.9in 3 5.0m Groups A,B,C and D
With U2 3/8-24 UNF-2A e.g.) 04=0.4in, L1≤L2-0.7in e.g.) 35=3.5in 4 7.0m ATEX:Ex nAⅡT4 Gc
T (With Fluoro resin * inch for UNF-2A thread 8 KTL:Ex nAⅡT4
coating) mm for M thread TR-CU:
C
L Without 2Ex nAⅡT4 Gc X

WL-142K05R - ＊＊ ＊＊ ＊＊ ＊ /NB＊

Thread size Unthreaded length* Case length* Cable length (L3) Non-incendive

M2 M10×1 05=5mm 30=30mm 1 0.5 m CSA C/US:

Class , Division 2,
U2 3/8-24 UNF-2A 02=0.2inch 12=1.2inch 2 1.0 m 1 Groups A,B,C and D
* inch for UNF-2A thread 3 5.0 m ATEX:Ex nAⅡT4 Gc
mm for M thread
4 7.0 m 8 KTL:Ex nAⅡT4
TR-CU:
C
2Ex nAⅡT4 Gc X

6H17-017 Rev.3
Issued Apr. 2017
Revised Mar. 2021