Technical Survey to develop a project of Instrumentation, Sensors and Actuators.
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A technical survey for an instrumentation, sensor, and actuator project is the fundamental field phase where detailed physical and operational information is gathered about an existing process, machine, or infrastructure. The objective is to document the current state ("As-Is") to design, automate, improve, or maintain control loops accurately and safely.
This process consists of the following key stages:
- 1. Definition of Scope and Requirements (AS-IS).
- • Process Identification: Understand the current operation of the machine or process to be automated.
- • Project Objectives: Define whether it is a new installation, sensor upgrade, actuator improvement or controller change (PLC/HMI).
- • Safety Requirements: Identify critical areas, necessary emergency shutdowns, and technical regulations to be met.
- 2. Field Survey of Instrumentation (Sensors).
- • Identification of Variables: Physical measurement of process variables: pressure, level, flow rate, temperature, position, etc.
- • Sensor Selection: Determine the appropriate sensor type (signal type, measurement range, required accuracy).
- • Physical Location: Take measurements, photos, and plans to determine where the sensors will be installed and how they will be connected.
- • Environmental Conditions: Evaluate factors such as extreme temperature, vibration, humidity, presence of dust or corrosive agents.
- 3. Lifting of Actuators and Final Control Elements.
- • Identification of Actuators: Document valves, pumps, motors, speed variators, pneumatic/hydraulic cylinders.
- • Action Requirements: Define whether they require ON/OFF control or proportional control (continuous signal of 4-20mA, 0-10V).
- • Compatibility: Check the force, torque, or flow required for the control action.
- 4. Connectivity and Control Infrastructure.
- • Wiring and Channeling: Mapping of wiring routes from sensors/actuators to the control panel (PLC/HMI).
- • Industrial Networks: Evaluate the existing or required communication network (Profinet, Modbus, Ethernet/IP).
- • Power Supply: Verify available voltages (110V, 220V, 24VDC).
- 5. Final Survey Documentation.
- • Updated Drawings (As-Built): Update of P&ID drawings (Piping and Instrumentation Diagrams) and electrical diagrams.
- • Field Report: Technical reports, high-resolution photographs of the machinery and a preliminary Bill of Materials (BOM).
- • I/O List (Inputs/Outputs): Preliminary count of how many analog and digital inputs and outputs the system will require.
In summary, it is a physical and technical mapping that seeks to convert a physical process into precise data in order to design automation, ensuring that the sensors "see" and the actuators "do" what is necessary within the industrial environment.
- DATA:
To create a robust and functional system of instrumentation, sensors, and actuators, it is necessary to collect detailed data covering both the technical specifications of the components and the environmental conditions in which they will operate. The data can be divided into several key categories:
- 1. Definition of the Process and the Variable (What to measure/act on?).
- • Physical Magnitude: Identify what is to be measured or controlled: temperature, pressure, level, flow rate, humidity, position, speed, vibration, etc.
- • Measurement Range (Span): Minimum and maximum value that the sensor should detect (e.g. -50°C to 150°C).
- • Actuator Action: Define the type of movement or force required (e.g., open/close valve, motor speed, move an arm linearly).
- • Required Accuracy and Precision: What is the maximum acceptable error in the measurement.
- 2. Technical Specifications of the Sensor (Input).
- • Output Signal Type: Analog (0-10V, 4-20mA), Digital (GPIO), or Communication Protocols (I2C, SPI, Modbus).
- • Sensitivity and Resolution: The smallest variation that the sensor can detect.
- • Response Time: How quickly the sensor must react to a change in the variable.
- • Excitation/Power Supply: Voltage and current required to operate (e.g., 5V DC, 24V DC).
- 3. Actuator Technical Specifications (Output).
- • Energy Type: Electrical, pneumatic or hydraulic.
- • Load Capacity/Torque: Force or power required to move the load (e.g., N·m in motors, kg in pistons).
- • Speed of Action: Time required to execute the action.
- • Control Type: All/Nothing (On/Off) or Proportional (PWM, 0-10V).
- 4. Environmental and Assembly Conditions.
- • Operating Temperature Range: The maximum and minimum ambient temperature where the equipment will be located.
- • IP Rating (Ingress Protection): Level of protection against dust, water, or chemical agents (e.g., IP67).
- • Chemical Compatibility: Whether the sensor will be in contact with corrosive or hazardous substances.
- • Mounting Type and Connections: Available space, type of thread or flange for sensors, and size of the actuator.
- 5. Conditioning and Controller (Data Acquisition).
- • Conditioning Stages: Does it require amplification, filtering, linearization or isolation?
- • Logic Controller (PLC/Microcontroller): Define the brain of the system that will receive the data and send the commands.
- • Human-Machine Interface (HMI): If local data visualization is required.
- Summary of Collection Phases.
- 1. Determine objectives: What process to automate.
- 2. Model the system: Block diagram (Input -> Process -> Output).
- 3. Hardware selection: Specific sensors and actuators according to the technical data.
- 4. Connection and Calibration: Define signals and transmission media.
- Additional Requirements:
- List of processes.
- List of procedures.
- List of machinery.
- List of machines.
- List of systems.
- List of departments.
- List of personnel.
- Customer list.
- List of roles.
- List of production lines.
- List of production plans.
- List of main faults.
- List of current problems.
- List of losses.
- List of kpi's main departments.
- If you are not yet convinced about purchasing our product, service, or course, we can conduct a technical assessment at your facility to provide greater clarity and precision regarding the scope of the report we deliver. This assessment costs USD $60,000.00 and will be carried out over two weeks at your location. This fee will be refunded upon purchase of the product, service, or course; otherwise, it will not apply.
- Technical Assessments: Service Description.
- We offer these options to clarify the technologies.
- Courses for:
- Executives.
- Beginners.