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Field Mount Controllers

Field Mount Controllers, designed to be installed directly in the field near the process or equipment they are controlling, serve similar functions to Panel Mount Controllers but are engineered to withstand harsh industrial environments. These controllers feature rugged construction, weatherproof and explosion-proof housings, and capabilities to operate effectively across a wide range of temperatures and other challenging environmental conditions. Additionally, Field Mount Controllers reduce the distance between the measuring point and the controller, resulting in more accurate and faster responses. This feature makes them particularly useful in large facilities where the control room and the process equipment are located at considerable distances from each other. Therefore, Field Mount Controllers are a crucial component of process control and automation systems, bringing data collection and decision-making directly to the field, making them an ideal choice for operations that require robust, reliable, and efficient process control in demanding environments.


Multi-Channel Controllers

Multi-Channel Controllers are versatile devices capable of measuring a variety of parameters, including PH/ORP, DO, CL, Ozone, and more. This multi-functionality makes them suitable for complex industrial applications that require monitoring and controlling multiple factors simultaneously.

  • PH/ORP range: 014pH,-1999+1999mV
  • DO range: 0~20mg/L
  • CL range: 0~20mg/L
  • Ozone range: 0~20mg/L
  • Flowing sensor range: 010NTU,020NTU,0100NTU,0500NTU
  • Submersible sensor range: 01000NTU,05000NTU,0~10000NTU
  • SS range: 0~10000mg/L
  • MLSS range: 0~50g/L
  • Conductivity range: 020mS/cm, Range customizable maximum 0300mS/cm


  1. PH ORP Controllers

These devices are essential tools for managing and regulating the pH and ORP (Oxidation Reduction Potential) in various industrial processes. They are characterized by their accuracy and stability, able to measure within a range of 014pH and -1999+1999mV. These controllers are critical for industries like water treatment, chemical production, and various laboratory applications.

  • Measuring Range: 014pH,-1999+1999mV
  • Resolution: 0.01pH,1mV,0.1°C
  • Accuracy: ±0.02pH,±1mV,±0.3°C
  • Stability: ≤0.01pH/24h
  • PH Standard Liquid: 6.86/4.00/9.18


  1. DO (Dissolved Oxygen) Controllers

DO controllers play a vital role in industries like aquaculture, wastewater treatment, and brewing. They accurately measure Dissolved Oxygen levels in various water bodies. These devices have an automatic temperature compensation feature, ensuring accurate readings across different environmental conditions.

  • Measurement Range: 0200μg/L, 020mg/L
  • Resolution: 0.01μg/L,0.01mg/L,0.1°C
  • Accuracy: ±1%FS
  • Temp Compensation: Automatic


  1. TUR SS MLSS Controllers

These controllers are specifically designed to measure parameters like turbidity (TUR), suspended solids (SS), and mixed liquor suspended solids (MLSS). They are fundamental in water quality monitoring in water treatment facilities and in beverage production, where water clarity is a critical factor.

  • Measurement Range: Flowing sensor: 010,050,0200NTU, Submersible sensor: 0500,02000,010000NTU, Suspension solid: 010000mg/L, Sludge concentration:050g/L
  • Resolution: 0.1%
  • Accuracy: ±2%FS


  1. EC TDS SAL Controllers

These devices measure Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Salinity (SAL), providing essential data for industries such as aquaculture and wastewater treatment. Their precise measurements are vital in maintaining optimal water conditions.

  • Measurement Range: EC: 0300mS/cm, TDS: 010000ppm, SAL: 0~300‰, Range customizable
  • Resolution: 2%FS
  • Accuracy: ±2%FS
  • Temp Compensation: NTC10K
  • Measuring Method: Conductometric method


  1. CL O3 Controllers

These controllers are designed to measure the concentration of free Chlorine (CL) and Ozone (O3) in water. They are fundamental in water and wastewater treatment processes, ensuring the safety and quality of water through efficient disinfection processes.

  • Measurement Range: 0~20mg/L, ppm
  • Resolution: 0.01mg/L, 0.01pH
  • Accuracy: ±2%
  • Features: No need to replace the membrane and reagents


Application Features:

  • Flexibility: These devices can measure a variety of parameters, making them adaptable to different field requirements.
  • Accuracy: High measurement accuracy ensures reliable data for maintaining optimal conditions in various applications.
  • Durability: Built for harsh field conditions, these controllers are housed in rugged enclosures to protect the electronics from elements.
  • Ease of Use: User-friendly interfaces and digital display screens allow for easy data visualization and quick adjustments when needed.
  • Temperature Compensation: This feature maintains accurate readings across a wide range of environmental temperatures, which is essential in field conditions.
  • Customizability: Many of these controllers allow for customizable measurement ranges, accommodating unique requirements of different applications.
  • Low Maintenance: Certain models are designed to require minimal upkeep, reducing maintenance effort and cost.
  • Multi-functionality: The ability to measure and control multiple factors simultaneously makes these controllers suitable for complex industrial processes.
About Us

Karma Instrumentation & Control is a specialist supplier of process control and automation equipment and SI systems, as well as a manufacturer and designer of process and electrical control panels.

Contact Us

• Address: Block A, Unit 3D, Wild Fig Business Park, 1494 Cranberry Street, Honeydew, 2170

• Email:

• Call us: 011 794 2859

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