Contech Engineers, Turbhe
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Gas & Liquid Analysis

Manufacturer & Supplier of a wide range of products which include Gas & Liquid Analysis such as Liquid Analysis, Transmitter Controller and H2O Sensor.
Liquid Analysis

Liquid Analysis

Our product-array includes an extensive range of Liquid Analysis. Procured from the established manufacturers these products comply with the elucidated quality benchmarks of the industry. Furthermore, our clients can avail the offered products in both customized and standard form from us. The offered products are a compact, modular instrument, that has the flexibility (with 3 slots and optional boards) to accomplish a wide range of tasks. Pt100 or Pt1000 resistance thermometers, NTC/ PTC or 0(4) to 20 mA and 0 to 10 V standard signals can be connected to the main input of the JUMO dTRANS AS 02. The two binary inputs can be used as the initiators for actions (such as HOLD and keyboard inhibit). The high-contrast, graphic display allows the input signals to be visualized by numbers or as a bar graph. Parameters are displayed in plain text for easily comprehensible and secure operation. The offered products can be used as a two-point or three-point controller, a three-point modulating controller and as a continuous controller. All controller outputs can be configured for P, PI, PD or PID action. The controller software includes parameter set selection and a math module.A setup program is available for convenient configuration via a PC. The instrument can be integrated into a data network by means of an RS422/RS485 or Profibus-DP interface. Screw terminals on the back are used for the electrical connection.




  • Display: mg/l, pH, mV, μS/cm
  • Display visualization options: large numbers, bar graph or trend display
  • Integrated 1-point and 2-point calibration routines
  • Math and logic module
  • Calibration logbook
  • Integrated washing timer to control the cleaning equipment
  • 12 integrated user languages
  • Setup program features convenient programming and system documentation
  • RS422/RS485 interface (option)
  • PROFIBUS-DP interface (option)
  • Data logger with real-time clock (option)
  • Optional boards can be retrofitted




  • Displaying, measuring and controlling:
  • Free chlorine, hydrogen peroxide, peracetic acid, chlorine dioxide and ozone in conjunction with sensors as per data sheet 202630
  • The pH value or redox potential with 2-wire transmitters as per data sheet 202701
  • Hydrostatic liquid levels with 2-wire transmitters (level and pressure measuring instruments) as per data sheet 40.2090 or data sheet 40.4390
  • Flow rate in conjunction with relevant transmitters
  • Two temperature measuring points

Transmitter Controller

Transmitter Controller

Available with us is a consummate gamut of Transmitter Controllers. Manufacture by making use of supreme quality required basic material and components at our vendors' end. Furthermore, our clients can avail these products in different specifications as per their requirements. These offered products are being demanded owing to their significant attributes such as longer service and excellent performance. These offered products are provided with Separate Operating Unit. The JUMO TRANS O2 01 2-wire transmitter serves to measure dissolved oxygen in watery solutions. It provides an electrically isolated output signal 4 to 20mA according to the oxygen content. The device can be configured via a setup program or an optionally available connection and operating unit. The temperature of the medium to be measured can be detected and further processed (from the standard version also as 2-wire signal 4 to 20mA) via a Pt 1000 in the 2-wire transmitter. Measurements are carried out with an electrochemical probe covered by a membrane. The microprocessor circuit installed in the 2-wire transmitter considers temperature, air pressure and salinity (salt content). These offered products are designed as a module and can be easily maintained and replaced.




  • Measurement of dissolved oxygen (DO) in aqueous solutions
  • Safe 1-point calibration
  • 2-wire transmitter (for basic and standard version)
  • Electrical isolation of measurement signal (DO) and output signal (mA)
  • Easy connection to an existing system (PLC)
  • Can be used as stand-alone system in maximum version
  • Compensation of temperature, atmospheric pressure and salinity
  • Further processing of the temperature of the medium is possible (separate Pt 1000
  • or 2-wire transmitter)
  • Setup program for comfortable transmitter configuration / documentation
  • Easy, safe service by replacement of modules
  • Background lighting (for maximum version)




  • Communal and industrial waste water treatment plants
  • Drinking water monitoring
  • Protection of water bodies
  • Fish keeping/hatchery plants
  • Technical processing plants

H2O Sensor

H2O Sensor

JUMO tecLine H2O2 and PAA, Sensor for Hydrogen Peroxide and Peracetic Acid. These membrane-covered amperometric sensors are used to measure the concentration of hydrogen
peroxide or peracetic acid in aqueous solutions.

  • Typical areas of application are galvanizing plants, the pharmaceutical field, the food and beverage industry, dairies, the swimming pool industry, and the chemical industry.
  • The sensors are not suitable for detecting the absence of hydrogen peroxide or peracetic acid.
  • The integrated electronics of the sensors provide a temperature-compensated current signal of 4 to 20 mA. Calibration is carried out in a downstream device (indicator, controller, recorder, PLC, etc.).
  • The sensors can be connected directly to a suitable display and control device.
  • The display/control device JUMO dTRANS AS 02 (data sheet 202553) or the JUMO AQUIS 500
  • AS (data sheet 202568) are especially suitable for the combination with these sensors. They provide the voltage required for the supply of the sensors and allow for easy calibration of the measuring system.

Features :

  • Detection of peracetic acid or hydrogen peroxide concentration in the mg range
  • Two-electrode principle
  • Easy calibration
  • Integrated temperature compensation
  • Proven measuring system
  • The membrane is insensitive to chemicals and surfactants.


Contech Engineers, Turbhe
Yogesh Joshi
C - 107 A, Punit Industrial Estate, M. I. D. C. Opposite, Turbhe Railway Station, Thane Belapur Road
Navi Mumbai - 400705, Maharashtra, India

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