Pressure Data Loggers

What is a pressure recorder and a pressure logger?

In industrial, municipal, and scientific sectors, accurate and continuous pressure monitoring is a critical requirement to ensure the safety, efficiency, and reliability of technological processes and networks. The primary tool for this task is a pressure recorder, also known as a pressure logger or datalogger.

A pressure recorder is a standalone measuring device designed for continuous measurement, recording, and storage of pressure values of the measured medium (gas, liquid, steam) in its own non-volatile memory over a specified time interval. Unlike a traditional manometer, which shows pressure at a moment in time, a pressure logger creates a detailed chronological profile of parameter changes.

Key features of recorders:

• Autonomy: Most models are equipped with a built-in rechargeable battery or battery, allowing them to operate independently of an external power source for extended periods (from several months to several years).
• Built-in memory: Provides storage for thousands or even millions of measured values with time stamps.
• Pressure sensor: The device is based on a high-precision pressure sensor that converts the physical quantity into an electrical or digital signal.
• Software: Used to configure measurement cycles, read accumulated data, and perform subsequent analysis (graph plotting, reports).

Application areas: Where is a pressure measuring recorder needed?

The use of pressure data recorders covers a wide range of industries where even slight fluctuations or deviations from the norm can lead to accidents, inefficient resource use, or quality standard violations.

1. Housing and communal services and water supply

Pressure control in water supply systems is one of the most common tasks for a water pressure recorder.

• Leak detection in pipelines: A sharp drop or abnormal pressure spikes recorded by the pressure logger often indicate hidden damage or illegal taps.
• Optimization of pumping station operation: Continuous data recording allows engineers to optimize equipment operating modes, reducing wear and electricity consumption.
• Network water supply monitoring: Ensuring stable water pressure at remote points in the network.

2. Industry and energy

In these fields, the pressure sensor recorder ensures safety and compliance with technological regulations:

• Pipeline monitoring: Control of working, absolute, or gauge pressure in gas pipelines, steam pipelines, and mains with aggressive media (depending on device configuration).
• Process control: Validation of sterilization, pasteurization, and lyophilization processes in the food and pharmaceutical industries, requiring ultra-precise pressure and temperature control.
• Leak testing: Accurate recording of minimal pressure changes over a long period to confirm the integrity of closed systems.

3. Scientific research and special applications

• Hydrological studies: Measurement of hydrostatic pressure to determine water levels in wells, reservoirs, or rivers.
• Clean rooms: Recording pressure differentials to control air exchange and prevent contamination.

Choosing a pressure and temperature logger: key technical specifications

To buy a suitable pressure measuring recorder, it is necessary to carefully evaluate operating conditions and required measurement accuracy.

Main technical parameters

1. Type of measured pressure:
   • Absolute pressure (P_abs): Measurement relative to absolute vacuum (e.g., vacuum system monitoring).
   • Gauge pressure (P_gauge): Measurement relative to atmospheric pressure (most commonly used in pipelines).
   • Differential pressure: Measurement of the pressure difference between two points.
2. Measurement range: Should correspond to the maximum possible operating pressure in the system with a margin. The range of recorders includes models for low pressure (e.g., 0–10 bar) and high pressure (up to 600 bar).
3. Accuracy (Error): Expressed as a percentage of the upper measurement limit (% FSO). The smaller the value (e.g., ±0.05% FSO), the higher the device accuracy.
4. Enclosure protection rating (IP code): Critically important for field conditions. For underground installation or outdoor use, high protection such as IP68 (completely dust-tight and capable of prolonged water immersion) is required, while IP54 is sufficient for dry indoor environments.
5. Memory and recording frequency: Memory size determines how much data the pressure recorder can store before reading. Recording frequency (measurement interval) can be set from once per second to once per hour or longer.
6. Logger multifunctionality: Many modern models are multichannel and can simultaneously record several parameters, such as pressure, temperature, and humidity, which is convenient for comprehensive monitoring.

Data transmission and software

Modern pressure data loggers offer flexible options for data reading:

• Wired connection: USB, RS-232/RS-485.
• Wireless communication: Bluetooth, Wi-Fi for local reading or data transfer to a mobile device (Android/iOS).
• Telemetry (IoT): Use of cellular networks (NB-IoT, LTE-M) for remote real-time data access, which is standard for monitoring large distributed networks.

Advantages of standalone pressure data loggers

A standalone pressure logger is more practical compared to traditional control methods:

• Documentary confirmation: Provides accurate, human error-free data for audits, dispute resolution, and regulatory compliance.
• Cost-effectiveness: Early detection of anomalies (leaks, excessive pressures) allows prompt problem resolution, reducing medium losses and preventing costly accidents.
• Installation flexibility: Small size and autonomous power supply allow installation in hard-to-reach places (wells, shafts, underground chambers) where laying power cables is impossible or impractical.
• Reduced operating costs: Long battery life and durable housing minimize the need for frequent maintenance.

How to choose and buy a pressure logger: Price and Cost

When purchasing a pressure measuring logger, it is important to evaluate not only the base price of the device but also the total cost of ownership, including calibration, software, and accessories.

1. Define the task: It is necessary to clearly understand which parameter and in what range need to be measured (for example, absolute pressure up to 10 bar, gauge pressure up to 600 bar).
2. Operating conditions: For immersion, a pressure logger with IP68 protection class and resistance to aggressive environments is required (for example, a stainless steel housing).
3. Need for additional measurements: If simultaneous temperature monitoring is required, a combined pressure and temperature logger is chosen.

The company «Izmerkon» offers a wide range of high-quality pressure loggers. The catalog includes both compact standalone pressure-temperature gauges (for example, DCX-22, LEO-Record) and high-temperature solutions. Our specialists are ready to provide expert consultation to help select the optimal device that meets technical requirements and budget.