Products / Services : NK Instruments Pvt. Ltd.

The simple construction of Flow Gauges / Indicator, without any power supply or, battery. PELTON WHEEL FLOW INDICATOR, WHEEL FLOW INDICATOR, SIGHT GLASS TUBE- these few types are available with us. SIGHT GLASS TUBE is just a transparent tube, through which we can see the fluid passing through it. But in case of PELTON WHEEL FLOW INDICATOR & WHEEL FLOW INDICATOR through the transparent window we can see the rotating Wheel, which confirms the availability of Flow. Max. Working Pressure : 10 to 20 bar depending on the model we select Max. Working Temperature : -15 up to 100 degree C depending on the model we select End Connections : BSP or, NPT threaded ends, Flanged ends and Swivel type ends Applications : These type of Flow Gauges are perfectly suitable to take an idea of the liquid flow rate through the pipe line. These are very commonly used in Oil Extrusion Machines, Plastic Molding Machines, Casting Industries, Cement Industries, Vacuum Pump Cooling Systems, Mechanical Seal Manufacturing units etc. applications where unidirectional flow is possible. These Flow Gauges can be used for Hard Water as well as various oils of 12 up to 110 cst viscosity.

The simple construction of Flow Gauges / Indicator, without any power supply or, battery. PELTON WHEEL FLOW INDICATOR, WHEEL FLOW INDICATOR, SIGHT GLASS TUBE- these few types are available with us. SIGHT GLASS TUBE is just a transparent tube, through which we can see the fluid passing through it. But in case of PELTON WHEEL FLOW INDICATOR & WHEEL FLOW INDICATOR through the transparent window we can see the rotating Wheel, which confirms the availability of Flow. Max. Working Pressure : 10 to 20 bar depending on the model we select Max. Working Temperature : -15 up to 100 degree C depending on the model we select End Connections : BSP or, NPT threaded ends, Flanged ends and Swivel type ends Applications : These type of Flow Gauges are perfectly suitable to take an idea of the liquid flow rate through the pipe line. These are very commonly used in Oil Extrusion Machines, Plastic Molding Machines, Casting Industries, Cement Industries, Vacuum Pump Cooling Systems, Mechanical Seal Manufacturing units etc. applications where unidirectional flow is possible. These Flow Gauges can be used for Hard Water as well as various oils of 12 up to 110 cst viscosity.

The simple construction of Flow Gauges / Indicator, without any power supply or, battery. PELTON WHEEL FLOW INDICATOR, WHEEL FLOW INDICATOR, SIGHT GLASS TUBE- these few types are available with us. SIGHT GLASS TUBE is just a transparent tube, through which we can see the fluid passing through it. But in case of PELTON WHEEL FLOW INDICATOR & WHEEL FLOW INDICATOR through the transparent window we can see the rotating Wheel, which confirms the availability of Flow. Max. Working Pressure : 10 to 20 bar depending on the model we select Max. Working Temperature : -15 up to 100 degree C depending on the model we select End Connections : BSP or, NPT threaded ends, Flanged ends and Swivel type ends Applications : These type of Flow Gauges are perfectly suitable to take an idea of the liquid flow rate through the pipe line. These are very commonly used in Oil Extrusion Machines, Plastic Molding Machines, Casting Industries, Cement Industries, Vacuum Pump Cooling Systems, Mechanical Seal Manufacturing units etc. applications where unidirectional flow is possible. These Flow Gauges can be used for Hard Water as well as various oils of 12 up to 110 cst viscosity.

DO2 Indicator with Electrode

DO2 Indicating Controller with Electrode

We have Smart type DP Transmitters with magnetic key. These Smart Differential Pressure Transmitters are available in wide range from Absolute till 1000 bar in IP 67 enclosure. SMART DP Transmitters has LCD display for local indication for measured DP value.

We have various type of DP Transmitters. DP Transmitters are very commonly used in Industrial applications like DP measurement across Filters, DP Measurement across Strainers, for Level measurement in Pressurized Tanks and also for Flow Measurement through Orifice Plates. DP Transmitters are available in Blind type and with Digital Indication.

We have Diaphragm type Differential Pressure Switches. These gauges are more in demand for DP control applications in HVAC / across Heat Exchangers / across Pumps / across Filters / across Strainers, Level Control applications in pressurized tanks, Ranges : from 0 to 150 mm WC up to 0 to 7 bar Differential : Fixed 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 or, Two. Type of Switches : Micro Switches - SPDT, 5 A 250 V AC Enclosure class : IP 54, IP 65, IP 66 or, Flameproof Pressure Housing : MS or, SS Sensing Diaphragm : Neoprene or, Teflon Process Connection : ¼” BSP-F (Standard)

Diaphragm type DP Switches with Adjustable On-Off Differential facility are used normally for automatic filter cleaning system or, for Level Control application in pressurized tanks. Various ranges and options for their selection are available. DP Ranges : varies from 0 to 150 mm Wc up to 0 to 7 bar Differential : Field Adjustable Accuracy : +/- 1% FS Migration : Impossible No. of Switches : One or, Two nos. Type of Switches : Micro Switches - SPDT, 5 A 250 V AC Enclosure class : IP 54, IP 65, IP 66 or, Flameproof Pressure Housing : MS or, SS Sensing Diaphragm : Neoprene, Teflon Process Connection : ¼” BSP-F (Standard) Temperature Range : -10 to 80 Degree C (for high-temperature use of impulse tube is advisable)

Various DP Ranges : from 0.1 to 1 Bar up to 0.2 to 3.6 Bar Stage Difference (Dead Band between two switches) : Fixed Temperature Range : -10 to 80 Degree C (for high temperature use of impulse tube is advisable) Accuracy : +/- 1% to 2% FS No. of Switches : Two nos. Type of Switches : Micro Switches - 2 SPDT (5A 250 V AC or, 0.2 A 250 V DC.) Sensing Element : Diaphragm (PTFE, Neoprene or, SS 316L) OR, Piston Enclosure : Weatherproof (IP 54), Weatherproof (IP 65), Weatherproof (IP 66) or, Flameproof Pressure Housing : Aluminium, Brass, SS 316 or, special on request Process Connection : ¼” BSP (F) or, special on request

We have Orion brand DP Switches. The DP Switches are also known as PD Switches, Differential Pressure Switches, Pressure Difference Switches.

We have Differential Pressure Gauge with Switches, which are useful in industrial applications like Automatic cleaning systems for Heat Exchangers and various type of expensive Filters. We have few options in the same : Differential Pressure Gauge with one Switch, Differential Pressure Gauge with Duel Switches or, Differential Pressure Gauge with Flameproof Switching contacts. The type of Differential Pressure Gauge with Switches are : Piston type DP Gauge with Switch - These are offered when medium in both the ports are same and slight migration is acceptable. Diaphragm type DP Gauge with Switch - These are recommended where migration of mediums in two ports in not acceptable. & Digital DP Gauge with Switch (Digital DP Indicator with Switching contacts) - For high accuracy applications these are recommended..

Magnetic coupling Piston type Differential Pressure Gauges (CE Certified model) These gauges are suitable for Non-Magnetic Fluids only. Model : 200 DPG Range : various ranges from 0.25 to 10 bar Dial Size : various options like 2”, 2 1/2”, 3 1/2”, 4”, 4 1/2”, 6” dia. Connection : 1/4” NPT - F (Optional BSP) Accuracy : + / - 2% FSD (Ascending) Working Pressure : High static pressure - 100 Kg/cm2 Porting : Options like - In–Line, Back or, Bottom Calibration : Non-Linear, spread over 65 degrees to 75 degrees Arc. Sensing Element : Piston Wetted parts : Aluminium, Brass, SS 316, Buna N, Viton Max. Working Temp.: Max. 80 degree C if Buna N is used, it can be max. 200 degree C if Viton is used. Enclosure : IP 65 Singe or, Duel Reed Switch Contacts can be provided along with DP Gauge, either in IP 65 or, in Flameproof enclosure

We have Diaphragm operated Differential Pressure Gauges which do not have any bourden tube in it. These DP Gauges works on Magnetic Coupling principle. These gauges are suitable for Non-Magnetic Fluids only and more in demand for DP Measurement applications in HVAC / across Heat Exchangers / across Pumps / across Filters / across Strainers, Level Measurement in pressurized tanks, Flow Rate indication across Orifice plate etc. Ranges : Various DP ranges from 15 mm Wc up to 7 bar We can also offer Compound ranges. Sizes : Diaphragm & Piston type Gauges are available in options like 2 1/2”, 3 1/2”, 4”, 4 1/2”, 6” dia. Battery operated Digital DP Gauges are available in 4" dia. External powered Digital DP Gauges are available in Panel mounted or, Wall mounted versions. Connection : 1/4” NPT-F (Standard) Accuracy : + / - 2% FSD (Ascending) Working Pressure : Various options up to 100 bar Porting : Options like In – Line. Back or, Bottom Calibration : Non-Linear, spread over 65 degrees to 75 degrees Arc. Sensing Element : Small Convoluted Diaphragm Wetted parts : Aluminium, Brass, SS 316, Inductrial Plastic, Buna N, Viton Max. Working Temp.: with Buna N as sealants Max. 60 degree C & with Viton max. 200 degree C.. Enclosure : IP 65 Certification : CE Single or, Duel Reed Switch Contacts can be provided along with the Gauge, either in IP65 or, Flameproof enclosure.

We have Digital DP Gauges, which are also known as Digital Differential Pressure gauges or, Digital Differential Pressure Indicators. These Digital DP Gauges are available with Integral Display or, with Remote Display versions. These Digital DP Indicators are available in external power supply version and in Battery power version.. Digital Differential Pressure Indicator / Gauges are available in Flameproof version also. Features of Digital Differential Pressure Indicators : Display : LED or, LCD Power : 230 V AC (Standard) 110 V AC or, 24 V DC Mounting : Field mounted, Panel mounted and Flameproof DP Range : 0 to 10 mm Wc upto 0 to 10 bar

We provide Process Indicators and Process Indicating Controllers as per the clients demand & the process needs. Input can be 4 to 20 mA, 0 to 10 V or, pulses, resistance etc. Output can be Potential Free Contacts (Single / Two or, Four nos.) or, Re-transmitter etc. Display will be LED 7 segment or, LCD Power Supply can be 230 V AC, 110 V AC, 24 V DC or, 12 V DC Mounting types can be Panel mounted, Wall Mounted or, Field mounted Enclosure types can be IP 40, IP 54, IP 65 or, Flameproof

Industrial Control Panels are designed and manufactured as per the actual requirement for plant operations. NK Instruments Pvt. Ltd. design and manufacture various type of Indication and Control Panels, which are used for Automation in industries. Such panels are manufactured in MS with powder coating, SS or, in Flameproof versions. We provide those in enclosures like IP 52, IP 54, IP 65 or, Flameproof.

Online Conductivity Transmitters are used in various industrial applications, where there is a need to check the conductivity of the flowing or, stored liquid. Using the suitable controller and the suitable control valve, conductivity of the liquid can be controlled. Type of enclosure : IP 54, IP 65 or, Flameproof Conductivity Range : 0 to 2000 micros/cm Sensing Electrode : In SS316 construction with PTFE insulation Process Connection : 1/2"BSP (M) or, TC end Temperature Compensation : Can be provided

We are a leading Manufacturer & Supplier of Pressure Switches such as Flameproof Pressure Switches, Adjustable Differential Pressure Switches and Digital Pressure Switches from India.