NK Instruments Pvt. Ltd.NK Instruments Pvt. Ltd.

Process Control Equipment
We are the authorised Dealers of reliable manufacturers like Kaustubha Udyog, Hirlekar Precision, Jaycee Technologies, Mahalaxmi Instruments, Multi-Tech Devices, Vatturkar Industrial, Fluidyne Instruments etc. To fulfill customers requirements we always study and understand the clients requirements, their application etc,a nd then only we offer the appopriate instruments. Apart from the standard range of instruments, we also cover Tailor Made Instrumentation like, Programmable Indicators, Programmable Sequential Timers, Programmable Time Totalizers, Multiple Logic Systems, Multiple Input with multiple out put units, Single Input and Multiple Out put units, Bar Graph Indicators, Data Loggers, Process Scanners, Multi Channel Scanners, PID Controllers, On Off Controllers, Circular Chart Recorders with Modbus communication, RS 485 or, RS 232 communications etc. instruments to meet customers specific requirements. We also undertake Turn Key Instrumentation Projects. ??? PLC & SCADA based control system. ??? Design, Detailed Engineering & System Integration Process Automation. Information Systems. Automation of new as well as existing Machines. Sequence and Batch Control. Distributed Control for open Controllers. Product Transfer and Inventory tracking for tank farms. Autoclave monitoring & control of necessary parameters. DG set automation Reactor / Vessel automation, Water Treatment Plant automation Effluent Treatment Plant automation Induction Heating Machine, Furnace Automation CIP/SIP Systems -Door interlock systems for clean rooms Application software development for various types of SCADA software viz. Wonderware, - PCIM, ASPIC, VijeoLook etc. Application software development for various types of PLC???s viz. Modicon (Telemechanique), Allen Bradley, Siemens etc. ??? We provide the entire range of IO modules, Controllers, Scanners, Remote Terminal Units, Signal Isolators, Signal Converters, Data Highway Communication Products, Man-Machine Interface Devices and Software, as well as engineered solutions. ??? Supply of instruments, erection hardware & Accessories ??? Erection & Commissioning of Control Instrumentation ??? Annual maintenance contracts


Pressure & Vacuum Switches
Pressure & Vacuum Switches

a) Adjustable Differential Switches
b) Fixed Differential Pressure & Vacuum Switches
c) 2 SPDT Adjustable Stage Differential Switches
d) 2 SPDT Fixed Stage Differential Switches

Range : 0 to 760 mm Hg Vacuum or, from 0 to 1 Bar up to 0 to 400 Bar
Differential (Dead Band) - Adjustable
Temperature Range : -10 to 80 Degree C (for high temperature use of impulse tube is advisable)
Accuracy : +/- 1% to 2% FS
No. of Switches : one no.
Type of Switches : Micro Switches - SPDT
Switches of Range 1 Bar upto 400 Bar & Vacuum 5 A 250 V AC or, 0.2 A 250 V DC.
15 mm Wc upto 2500 mm Wc 2 A 250 V AC.
Sensing Element : Diaphragm (PTFE or Neoprene) or Piston
Enclosure : Dust Proof (IP 40), Weather Proof (IP 54), Water Proof (IP 65), Flameproof to group IIA/IIB or Flameproof to group IIC
 
Pressure Housing Aluminium, Brass, SS 316 or, special on request
Process Connection ¼” BSP (F), Line Mounting, Surface Mounting, Vertical Stacking or, special on request.
Diaphragm Sealed Switches : Available. As per the given below details.
Set Point Indicating Scale : Optional
Applications : When the precise gap is required between ON and OFF of the Pressure / Vacuum Switch, Adjustable Differential Switches are necessory. Mainly in the applications of Compressors etc.



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Differential Pressure Switches/Differential pressure gauges

a)    Pressure Difference Switches With Fixed Differential
 
DP Switch (Single Diaphragm Type), DP Switch (Two Diaphragm Type)

Range from 0 to 1 Bar up to 0 to 25 Bar
Accuracy : +/- 1% FS
Temperature Range : -10 to 80 Degree C (for high temperature use of impulse tube is advisable)
Migration : Impossible
No. of Switches : one no.
Type of Switches : Micro Switches - SPDT
5 A 230 V AC or, 0.2 A 250 V DC
Housing IP 54 or, Flameproof
Pressure Housing Aluminium, Brass, SS 316 or, special on request
Process Connection ¼” BSP (F) or, special on request
Application : For Filter, Heat exchanger healthiness indication & auto cleaning systems For safety interlocks on Air, Gases, Liquids, Steam etc. lines. Diaphragm Sealed DP Switches
can be used for differential pressure measurement of Pest and Slurry's also.

b)  Adjustable Differential Type DP Switch (Single DiaphragmType)
 
Range:- 100 to 500 mm Wc
Adjustable Differential Range :- 100 to 400 mm Wc
Accuracy : +/- 1% FS
Temperature Range : -10 to 80 Degree C (for high temperature use of impulse tube is advisable)
Migration : Impossible
No. of Switches : one no.
Type of Switches : Micro Switches - SPDT
1 A 230 V AC or, 2 A 250 V AC, 5 A 250 V AC
Housing IP 54 or IP 65
Pressure Housing Plastic, MS, Aluminium or, SS 316
Sensing Diaphragm : Nitrile, Teflon or Neoprene
Process Connection hose fitting or, ¼” BSP (F)
Application : For Filter, Heat exchanger healthiness indication & auto cleaning systems. Air,
 
Gases, Liquids, Steam etc. services


Differential Pressure Switches/Differential pressure gauges
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Flow Switches
Flow Switches

Flow Switches for Liquid & Gases

Range : 0.4 to 150 LPM
Max. Working Tem : 100 degree C
Max. System pressure : 10 kg/cm²
No. of Switches in one unit : one no. or two nos.
Type of Switches : Reed Switches - SPDT or SPST
Sensing Element : Piston or, Paddle
Wetted Parts : Brass or SS 316
Enclosure : Dustproof, Waterproof or Flameproof
Sizes : ¼” up to 20"
Electrical Terminal Housing : PG 9 connector, Terminal strip, flameproof housing
LED Indicator : Optional
Set Point : Prefixed at factory or adjustable
Applications : For Interlocking purpose if fluid flow is not sufficient or if its more than the process requirement.




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Level Switches

Level Switches for Liquid

1) Vibrating Fork Type Level Switches  
2) RF Admittance Type Level Switches
3) Rotating Paddle Type Level Switches  
 
4) Diaphragm Type Level Switches   

Level Switches for Solids



1) Float Type Level Switches
2) Cable Float Type Level Switches
3) Capacitance Type Level Switches
4) Conductivity Type Level Switches
5) Vibrating Fork Type Level Switches
6) Diaphragm Type Level Switches    

 


Level Switches for Slurry & Pastes
 1) RF Admittance Type Level Switches
 
Service : For all types of liquids, Solida & Slurries
Application : For interlocks for Level in the vessels

Level Switches
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Flow Meters
Flow Meters

PD type Flow Meters

Range : 6 to 24000 LPH
Pipeline Size : 8 mm up to 80 mm
Accuracy : 0.5% of full flow capacity
Type of Sensor : Osscilating Piston
MOC of Sensing Element : PEEK
Flow Indication/Totalizer : Digital
Indicator unit : Field Mounted Or, Panel Mounted Or, Wall Mounted
Power Supply : 230 V AC, 24 V DC or, Inbuilt Battery operated
Applications : Accurate Flow Measurements of costly liquids. Fuel consumption measurements of Burners / Generators / Furnaces etc.


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Flow Rate Indicators

1) Mechanical Flow Gauge
2) Turbine Type
3) Mini Flow Meter (FLOREDO)
4) Glass Tube Rota meter
5) Orifice Type Flow Indicators
6) Metal Tube Rota meter
7) Electromagnetic Type
 
8) Ultrasonic Type (For Liquid through the pipeline)
9) Ultrasonic Type (For Liquid through open channel)


We offer varieties of flow meters and depending on the application and client's application suitabilities,w e select and offer the suitable one.

Flow Rate Indicators
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Level Transmitters
Level Transmitters

 
1) Capacitance Type Level Transmitter
2) Float Type Level Transmitter
3) Ultrasonic Type Level Transmitter
4) Radar Type Level Transmitter


Wide range of Level Sensors, Indicators and Transmitters for Liquids, Solids, Pallets and granules etc.

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Level Indicators

Mechanical Level Indicators/Digital Level Indicators


Service : For all types of liquids
Mounting : Side mounted
Bypass assembly : Not required
Indication : Through a clear transparent glass
Range : 1 foot up to 2 meters
Scale : 2 nos. provided on either side of the indicator (one in mm & other in inches)
Wetted parts : Transperent Glass, MS, SS 304, SS 316 or, special
Max. Temperature : up to 150 degree C
Max. Pressure : 5 Kg/cm2
Application : Level indication of any type of liquid in open or, pressurized tank. Chances of invisibility of level because of formation of layer of liquid on the inner side of the indicating tube.




Level Indicators
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Conductivity & PPM Instrument
Conductivity & PPM Instrument

Advantage : Digital Indication of conductivity is possible online.
Service : For all types of liquids
Working principle : Conductivity
Accuracy : 1% FSD
Mounting : Inline
Indicator Mounting : Online
Conductivity Indication : Digital through Head Mounted Indicator
Range of Conductivity measurement : 0 to 4, 0 to 40, 0 to 100, 0 to 2000 µS/cm
Sensor MOC : SS 316
Sensor Rod MOC : PP
MOC of Inline fitting : ABS
Process connection: Hose Connection
Indicator Housing : Weather proof IP 65
Power Supply : 230 V AC
Max. Fluid Temp. : up to 60 degree C
Max. Fluid Pressure : 4 Kg/cm2
Application : For accurate indication of conductivity of fluid passing through the pipeline.
 

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Density Meter

Service : For all types of liquids and slurrys Working principle : Online density measurement by Gama rays
Accuracy : 0.5% FSD Mounting : Online Non contact type
Detector Housing : Rugged steel enclosure  IP 67 connects to control unit with instrumentation cable
Scientillation Detector : Sodium Iodide with integral photo multiplier
Power Supply : 110 V AC or 230 V AC
No loss of Power with power failure
Communication Port : RS 422 Link
Output of the transmitter : 4 to 20 mA
Temperature Drift : +0.00003 SG units per degree C
Repeatability : 0.0001 SG units typical and 0.0002 SG units maximum
Max. Fluid Temp. : up to 50 degree C
Vibration : 2 G at 100 Hz
Humidity : 5 to 95 % RH, non condensing
Application : For online density measurement of fluid passing through the pipe line. Mainly used in pharmaceutical and food industries, Steel Plants etc.

Density Meter
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Tailor Made Instrumentation
Tailor Made Instrumentation

 Other than standard range of Process Control Instruments, we also deal in to Tailor made Electronic Instrumentation. Depending of the process requirements, requirements of user’s changes and those becomes specific, in certain cases. We design and develop the Instruments as per the client’s requirements. Those are mainly in to demand at Building Automation Systems, Dosing Systems, Batching Systems, Smoke Analysis etc.

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System Automation

. Intelligent Plant Solutions.
. System Integration.
. Turnkey Automation.
. Design and Detailed Engineering.
. Erection and Commissioning.
. Application Software Development.
. PLC and SCADA based Systems

System Automation
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What We Offer
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