Nunes Instruments

• Can measure CH4, CO2, O2, H2S concentration simultaneously in biogas project Modular sensor design
• Auto correction on drift Available for gas Flow measuring ( Optional) Support blue tooth communication
• Uploading the data by blue tooth or USB port Modular sensor design for individual calibration
• GPS positioning Extension sensors and flow meter

• Land filll site biogas monitoring
• Waste water treatment biogas monitoring
• Anaerobic digestion processing monitoring
• CDM project monitoring Laboratory
• Airbag sampling analysis

• The SMART FLOW 20 is based on the classical method viz. soap film method. The instrument is automated by using micro controller, which provides highly accurate measurement and direct digital read out of gas flow rate. The time required for the soap film to pass through a known fixed volume is measured. The soap film is sensed by IR sensor. When the soap film passes through first sensor, it activates the timer of micro controller. Timer is stopped when the film crosses the second sensor. The flow rate is then calculated by micro controller and instantly displayed in cc/min.

• Direct Digital Readout
• Micro controller Based
• Highly Accurate and Fast
• Useful for measuring any gas flow specially in G.C
• Easy to operate
• Free of personal errors

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. W hy not try once?

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or  Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

These analyzers provide accurate and reliable measurements of key gas components such as methane (CH4), carbon dioxide (CO2), hydrogen sulfide (H2S), and oxygen (O2), among others.

Flue Gas Analyzer, Hydrogen Analyzer, Head space Analyzer, Bio Gas Measurement, Exhaust Gas Measurement, Ambient Air Measurement, 16’ sampling line, Gas flow velocity measurement, Landfill gas probe, Data logging, Combustion gas probe, Biogas Cleaning / H2S Scrubber, Biogas Flare, Biogas Generator / CHP, Petro Chemical Analyzes (Ammonia Production, Hydrogen Production, Direct Iron Reduction, Convertor), Oil & Gas Analyzes ( Natural Gas, Coal Bed Gas), Portable Infrared Syngas, Online Infrared Syngas, Spectroscopy Gas, Laser Process Gas Analyzer, Infrared Natural Gas Analyzer, Online UV-DOAS Biogas Monitoring System

This industrial-grade pressure transmitter is engineered for precise and reliable measurement of gases, liquids, and vapors across a wide range of industrial processes. With pressure ranges extending from vacuum (-100 kPa) up to 40 MPa (400 bar), it is suitable for both low and high-pressure applications. Built with advanced sensing technologies such as stainless steel capacitance, piezoelectric, thin-film, or ceramic sensors, it ensures high stability and repeatable performance.

The transmitter supports multiple output protocols, including traditional analog signals as well as digital communication standards like HART®, FOUNDATION™ Fieldbus, and PROFIBUS® PA, enabling seamless integration into modern process control systems. Many models are equipped with a digital LCD display for on-site monitoring.

Its rugged design, high accuracy (as low as 0.05%), and robust housing make it ideal for harsh industrial environments.

• Wide pressure measurement range: from vacuum (-100 kPa) to 40 MPa (400 bar).

• High measurement accuracy: 0.05% to 0.5% of span.

• Multiple sensor technologies: stainless steel capacitance, piezo, thin-film, or ceramic.

• Variety of output options: Analog, HART®, FOUNDATION™ Fieldbus, PROFIBUS® PA.

• Rugged construction with stainless steel and ceramic components.

• Digital LCD display for easy monitoring (on select models).

• High overload and shock resistance for demanding applications.

• Weatherproof and dustproof housings (IP65–IP68).

• Flexible process connections and mounting options.

• Long-term stability and reliability for industrial operations.

• Process automation in chemical and petrochemical plants.

• Oil & gas exploration, refining, and pipeline monitoring.

• Power generation plants for boiler, steam, and turbine monitoring.

• Water and wastewater treatment facilities.

• Pharmaceutical and food industries requiring sanitary connections.

• HVAC and building automation systems.

• General industrial applications involving gas, liquid, or vapor pressure measurement.

We are suppliers of Carbon Dioxide Detector.

Features:

• Non-Dispersive Infrared sensor
• Internal pump to draw a sample
• Adjustable timer for sample pump
• Quick and accurate response to Carbon-Dioxide
• Easy to operate
• Portable, light weight, with rechargeable batteries and battery charger
• Tincan piecer press & stand available & with hardened needles
• Quick warm-up time, no moving parts in sensor

• Display: 3 ½ digits - 12 mm high LCD
• With backlight and switch

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. W hy not try once?

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or  Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. W hy not try once?

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or  Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

Stand, Bands, Reservoir, Graduated Burette and Wooden cover for protection. Operation manual shall be provided for checking the purity of CO2 gas.

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. Why not try once?

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

Operation:

It consists of a piercing system with pressure gauge,Vent valve and Thermometer. A chart is provided along with Equipment from which Gas content is determined. Bottle is held below piercing device a linear clutch mechanism holds bottle firmly in pierced condition. Gas pressure is indicated and Temperature is measured at same time.

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. Why not try once?

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or  Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

We are suppliers of Methane Gas Monitor.

Features

• Sensor internally mounted in pumped mode Non-dispersive infrared (NDIR) sensor
• Solid State throughout
• Fast warm-up
• Digital readout with LED display
• No effect of background gases
• No moving parts in sensor
• Portable light weight with rechargeable batteries & battery charger

Specifications

• Display: 3 ½ digits - 12 mm high LCD
• With backlight and switch
• Gas: Any one gasz as per table
• Range: Any one range as per table
• Working temp: 5° - 45°C
• Sampling method: By using in-built pump
• Sampling: Intermittent spot checking
• Pump suction: > 4 hg Column
• Flow Indicator: Provided. 0 ??3 l/m
• Calibration: With certified calibration gas
• Low Battery Low battery alarm provided

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. W hy not try once?

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or  Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

• Single color LED display with 6-level leak alarm
• Tricolor display of battery voltage
• RESET key that can provide convenient and fast resetting function
• Real time sensitivity adjustment
• Adopts quality sensors that can detect slightly leaked halogen gases
• 14 inches (35.5 cm) flexible stainless steel probe
• Detects all kinds of halogenated refrigerants

• Easy single-button operation.
• Robust, safe housing.
• Shows real amounts of carbon, TWA, and STEL values.
• Data log: up to two months or more.
• Electronic, acoustic, and vibrating detector. 
• Docking station eligible for fast bump and calibration.

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. W hy not try once?

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or  Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

Carbon monoxide (CO) is a deadly, colorless, odorless, poisonous gas. It is produced by the incomplete burning of various fuels, including coal, wood, charcoal, oil , kerosene, propane, and natural gas. Products and equipment powered by internal combustion engines such as portable generators, cars, lawn mowers, and power washers also produce CO. Carbon monoxide is harmful when breathed because it displaces oxygen in the blood and deprives the heart, brain, and other vital organs of oxygen. Large amounts of CO can overcome you in minutes without warning-causing you to lose consciousness and suffocate.

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. Why not try once?

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or  Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

VT04-003 Ultrasonic Air Water Dust Leak Locator Detector Tester.

Specifications:

• Design to locate leaks in pressure and vaccum systems
• Locate leaks pressure and vaccum systems
• Quick location of air, water, dust leaks
• 2 LED lights

Receiver

• Alarm Indication: The "LEAK" LED lights and the "ticking tone" increases in frequency
• Temperature: 0°C~40°C
• Relative humidity: <80%

Transmitter

• Temperature: 0°C ~ 40°C
• Relative humidity: <80%
• Low battery Indication: "Power" LED can't light

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. W hy not try once?

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or  Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

The Gas Volume Tester is a precision instrument designed for laboratory use, ideal for measuring the volume of gases under controlled conditions. Constructed from high-quality stainless steel, it ensures durability, resistance to corrosion, and reliability even under frequent use. The tester operates at a pressure of up to 100 PSI, allowing for accurate and consistent results in gas volume measurement.

With a sleek polished surface finishing, this device not only offers a high level of aesthetic appeal but also facilitates easy cleaning and maintenance. It is perfect for applications in laboratory settings where precise measurements are crucial for research, experiments, and product testing.

Key Features:

• Material: High-grade stainless steel for long-lasting durability
• Pressure: Capable of handling up to 100 PSI for optimal performance
• Surface Finishing: Polished finish for easy maintenance and a clean appearance
• Application: Designed specifically for use in laboratories, ensuring accurate and reliable results

Sixteen Channel Gas Monitor is an advanced monitoring system designed to continuously measure and display the concentration of various gases in industrial, commercial, or research environments. With the ability to monitor up to sixteen different gas channels simultaneously, this apparatus is ideal for applications in safety, environmental monitoring, and industrial process control. The device provides real-time data on gas levels, offering crucial insights for managing hazardous environments and ensuring regulatory compliance.

• Multi-Gas Monitoring:
  • Capable of measuring up to 16 different gases at the same time, including oxygen, carbon dioxide, carbon monoxide, nitrogen, ammonia, methane, hydrogen sulfide, and more.
• Real-Time Data Display:
  • Continuous, real-time readings of gas concentrations are displayed on a digital screen, offering immediate insight into the gas levels present in the environment.
• Customizable Alarm Systems:
  • Configurable audible and visual alarms alert users when gas concentrations exceed predefined threshold levels, helping to prevent accidents or exposure.
• High Accuracy and Sensitivity:
  • Advanced sensors provide highly accurate readings with a fast response time, ensuring reliability in detecting even low concentrations of gases.

An Eight Channel Gas Monitor is a sophisticated instrument designed to simultaneously monitor up to eight different gases in various environments. It is commonly used in industries such as chemical manufacturing, oil and gas, mining, environmental monitoring, and laboratories. This multi-gas monitor helps ensure the safety of personnel, compliance with regulations, and the effective management of hazardous gases by providing real-time readings and alarms for multiple gas types.

• Simultaneous Multi-Gas Detection:
  • Monitors up to 8 gases at the same time, including oxygen, carbon dioxide, methane, carbon monoxide, hydrogen sulfide, ammonia, sulfur dioxide, and more.
• Real-Time Data Display:
  • Continuously displays real-time gas concentrations, allowing for quick identification of dangerous levels or fluctuations.
• Customizable Alarms:
  • Adjustable alarm thresholds for each channel. Includes both audible and visual alarms that activate when gas concentrations exceed preset limits.
• High Sensitivity and Accuracy:
  • Equipped with advanced sensors that provide high precision in detecting even low levels of gases.

• Personal Gas Monitors Specially designed pocket size instrument for Personal Protection
• Safety from the hazards of combustible and toxic gases
• Highly stable against zero drift and quick to respond to changes in target gas concentration
• Continuously display gas concentration on an LCD display
• Two user settable alarm set points
• Available for SO 2, O 2, CO, NO2, NO, H 2 S, HCN, HCl, Cl 2, H 2, NH 3, PH 3, ETO, Combustible Gases (Explosimeter) and many other gases
• We have a range of Detectors & Monitors for various gases.
• Mail us your query & we will mail you the Best Model & competitive Rate

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. W hy not try once

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or  Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

• Advanced microprocessor based technology
• Audio and visual alarms User defined alarm set points
• Detects methyl Bromide gas in the range of 0 - 200 ppm
• Powerful inbuilt air sampling pump for remote sampling
• Real time clock with provision for setting date and time Alphanumeric display with back light Set touch membrane key board

Ultrasonic Leak Detectors can be used for a wide variety of tests including airborne measurements for gas leaks, compressed air, steam traps, bearings, pump cavitation detection, vehicle windscreen leaks, window and roof leaks etc.

Gas Sensors, Detectors and Monitors with alarms.

Gas leak detectors, Gas Analysers as well as gas sensors interact with a gas to initiate the measurement of its concentration which could be used to sound an alarm. The gas detector of gas sensor then provides output to a gas instrument to display the measurements. Common gases measured by gas detectors and gas sensors include ammonia, aerosols, arsine, bromine, carbon dioxide, carbon monoxide, chlorine, chlorine dioxide, Diborane, dust, fluorine, germane, halocarbons or refrigerants, hydrocarbons, hydrogen, hydrogen chloride, hydrogen cyanide, hydrogen fluoride, hydrogen selenide, hydrogen sulfide, mercury vapor, nitrogen dioxide, nitrogen oxides, nitric oxide, organic solvents, oxygen, ozone, phosphine, silane, sulfur dioxide, and water vapor.

Important measurement specifications to consider when looking for gas detectors and gas sensors include the response time, the distance, and the flow rate. The response time is the amount of time required from the initial contact with the gas to the sensors processing of the signal. Distance is the maximum distance from the leak or gas source that the sensor can detect gases. The flow rate is the necessary flow rate of air or gas across the gas detectors or gas sensors to produce a signal.

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. W hy not try once?

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or  Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

Specifications:

Test gas: Natural gas, gas, methane and other combustible gas

Preheating time : <30 seconds

Sensitivity: Adjustable minimum 5ppm

Reaction time: <1second

Sensor: Semiconductor

Continuous working hours: 8 hours (with a

slight change in the working state)

Working environment: -10 ~ 50

Working status: Continuous, unlimited

Probe telescopic bending: Support

Probe tube length: About 300MM (including probe)

Alarm mode : Sound alarm and light alarm

Power supply : 3 x1.5V AAA battery

Product size : 120 x 65 x 25MM

Product packaging: Color box

Single weight :160G

Product weight : 267G

Nunes Instruments , is  in the field of Instrumentation Sales Service & Repairs with 40 years of experience.  We provide service & repairs to your old high precision instruments and equipment.  We provide cost effective service & Repair to any brand, any make instruments  with service warranty. W hy not try once?

Instruments of Any Type, Any Make, Analog/Digital, Any Condition  Indian or  Imported

• Laboratory Instrument, Test Equipment,
• Scientific, Measuring, Precision Instrument,
• Analytical, Bio Medical, Survey, Electrical,
• Electronic Instruments ,Weather, Metrology.

The Portable oxygen monitor designed to continuously measure and display oxygen concentration in industrial and environmental settings. Equipped with a full-color LCD and bilingual interface (Chinese/English), it allows easy reading and navigation. The device features sound, light, and vibration alarms to alert users to dangerous oxygen levels. It can record up to 120,000 data points, and its rechargeable lithium battery with USB charging ensures reliable field operation.

• Measures Oxygen Concentration in real-time

• Color LCD Display with user-friendly interface

• Bilingual support: Chinese / English

• Three alarm types: Sound, Light, Vibration

• Data recording for 120,000 measurements

• USB rechargeable lithium battery

• Compact and portable design

• Suitable for industrial safety monitoring

• Industrial workspaces and factories

• Confined space safety monitoring

• Environmental monitoring and laboratories

• Medical and research environments

• Storage facilities and warehouses

• Any environment requiring oxygen level supervision

The Stack Gas Analyzer is a precision instrument designed to monitor and analyze flue gases emitted from industrial stacks, chimneys, and exhaust systems. It helps industries comply with environmental regulations by accurately measuring pollutant concentrations and combustion efficiency parameters.

Key Features:

• Gases Measured: Oxygen (O₂), Carbon Monoxide (CO), Carbon Dioxide (CO₂), Nitrogen Oxides (NO, NO₂, NOx), Sulfur Dioxide (SO₂), Hydrocarbons (HC), Hydrogen Sulfide (H₂S) (optional)

• Sensor Types: Electrochemical, Non-Dispersive Infrared (NDIR), Paramagnetic, Zirconia sensors depending on gas type

• Display: Large digital or touchscreen interface with real-time readings

• Sampling System: Heated probe with filters to prevent condensation and particle interference

• Data Logging: Internal memory with timestamp and export options (USB, Bluetooth, Wi-Fi)

• Calibration: Automatic/manual calibration with calibration gas kits

• Power Supply: Rechargeable battery and/or AC adapter

• Portability: Rugged and portable for field and industrial use

• Compliance: Meets EPA, CPCB, ISO 17025, and other local/international standards

Applications:

• Emission monitoring in power plants, chemical factories, cement industries, refineries

• Environmental compliance and reporting

• Combustion process optimization

• Industrial hygiene and safety monitoring

• Research on air pollution and control technologies