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The Yokogawa ALR121-S01 is a high-performance pressure transmitter designed to meet the needs of a wide range of industrial applications. Known for its superior accuracy and rugged build, it is part of Yokogawa’s ALR series, a range of devices built for precision pressure measurement in demanding environments. The ALR121-S01 features an advanced strain gauge sensing technology that ensures reliable and repeatable pressure readings in critical systems, such as those in the oil and gas, chemical, and power generation industries. This model offers a wide measurement range, excellent temperature stability, and long-term durability, making it a valuable tool for process control and monitoring.
Here are the detailed parameters of the Yokogawa ALR121-S01:
| Parameter | Value |
|---|---|
| Model | Yokogawa ALR121-S01 |
| Measurement Principle | Strain Gauge (Piezo-resistive) |
| Pressure Range | 0 – 2500 bar |
| Accuracy | ±0.1% of full scale |
| Operating Temperature | -40°C to +85°C |
| Output Signal | 4-20 mA, HART Protocol |
| Power Supply | 24 V DC |
| Electrical Connection | M12, 5-pin |
| Process Connection | 1/2 NPT, G 1/2, Flange |
| Material | Stainless Steel 316L |
| Ingress Protection | IP67 |
| Dimensions (L x W x H) | 140 x 70 x 60 mm |
| Weight | 1.6 kg |
The Yokogawa ALR121-S01 is designed for use in various industries that require accurate pressure measurement in tough environments. Some typical applications include:
Oil and Gas: The ALR121-S01 is often used in wellhead pressure monitoring, pipeline systems, and offshore platforms, where high-pressure accuracy is critical for safety and efficiency.
Chemical Industry: In chemical plants, the transmitter monitors pressure in reactors, piping systems, and storage tanks, helping to ensure safe and controlled chemical reactions.
Power Generation: The device is used to measure steam pressure, water pressure, and gas pressure in power plants, contributing to the efficient operation of turbines, boilers, and other critical equipment.
Water Treatment: The ALR121-S01 is used in water and wastewater treatment plants, monitoring pressure in filtration systems, pumps, and treatment processes.
Pharmaceuticals: In pharmaceutical manufacturing, the pressure transmitter ensures the integrity of processes such as sterilization, where precise control is required.
High Accuracy: The ALR121-S01 offers an accuracy of ±0.1% of full scale, ensuring precise and reliable measurements in a wide range of applications.
Wide Temperature Range: With a wide operating temperature range of -40°C to +85°C, it is suitable for use in both cold and hot environments.
Corrosion-Resistant Design: The stainless steel 316L construction ensures that the transmitter can handle harsh chemical environments, providing durability and longevity.
HART Communication Protocol: The ALR121-S01 supports the HART protocol, enabling easy integration into modern control systems and providing real-time diagnostics.
IP67 Protection: With an IP67 ingress protection rating, the ALR121-S01 is dust-tight and water-resistant, making it suitable for outdoor applications or environments with exposure to harsh elements.
Flexible Installation Options: It offers multiple process connections, such as NPT, G 1/2, and flange, for easy integration into different systems.
Brand: Yokogawa
Series: ALR Series (Pressure Transmitters)
Here are 5 other related models from the Yokogawa ALR Series, with their specifications:
| Model | Pressure Range | Accuracy | Dimensions (L x W x H) | Weight |
|---|---|---|---|---|
| ALR111-S10 | 0 – 400 bar | ±0.075% of full scale | 140 x 70 x 60 mm | 1.4 kg |
| ALR112-S00 | 0 – 2000 bar | ±0.1% of full scale | 150 x 75 x 65 mm | 1.6 kg |
| ALR113-S10 | 0 – 1500 bar | ±0.075% of full scale | 145 x 72 x 62 mm | 1.5 kg |
| ALR115-S20 | 0 – 2500 bar | ±0.1% of full scale | 155 x 80 x 70 mm | 1.8 kg |
| ALR116-S50 | 0 – 500 bar | ±0.075% of full scale | 142 x 71 x 60 mm | 1.4 kg |
Here are 5 other popular models from Yokogawa, with their specifications:
| Model | Range | Accuracy | Max Pressure | Dimensions (L x W x H) | Weight |
|---|---|---|---|---|---|
| EJA510E | 0 – 1000 kPa | ±0.055% of span | 70 MPa | 120 x 90 x 55 mm | 1.2 kg |
| EJA530E | 0 – 2000 kPa | ±0.1% of span | 70 MPa | 125 x 95 x 58 mm | 1.3 kg |
| EJA460A | 0 – 3500 kPa | ±0.075% of span | 70 MPa | 140 x 100 x 65 mm | 1.4 kg |
| EJA418E | 0 – 4000 kPa | ±0.1% of span | 70 MPa | 130 x 95 x 60 mm | 1.5 kg |
| DPharp EJA110 | 0 – 5000 kPa | ±0.075% of span | 70 MPa | 140 x 100 x 65 mm | 1.6 kg |
Q1: What is the pressure range of the Yokogawa ALR121-S01?
A1: The ALR121-S01 has a pressure range of 0 to 2500 bar, suitable for high-pressure applications.
Q2: What is the accuracy of the ALR121-S01 pressure transmitter?
A2: The ALR121-S01 offers an accuracy of ±0.1% of full scale, ensuring precise pressure measurements.
Q3: What is the operating temperature range of the ALR121-S01?
A3: The operating temperature range is from -40°C to +85°C, allowing it to function in both cold and hot environments.
Q4: What types of process connections are supported by the ALR121-S01?
A4: The ALR121-S01 supports NPT, G 1/2, and flange process connections, providing flexibility in installations.
Q5: Can the ALR121-S01 be used in harsh environments?
A5: Yes, the ALR121-S01 is built to withstand harsh conditions with a corrosion-resistant stainless steel housing and an IP67 ingress protection rating.
Q6: Does the ALR121-S01 support modern communication protocols?
A6: Yes, the ALR121-S01 supports the HART communication protocol for easy integration into modern control systems.
Q7: What materials are used in the construction of the ALR121-S01?
A7: The transmitter is made from stainless steel 316L, ensuring durability and resistance to corrosion.
Q8: What industries typically use the ALR121-S01?
A8: The ALR121-S01 is commonly used in industries like oil and gas, chemical processing, power generation, and water treatment.
Q9: What is the power supply requirement for the ALR121-S01?
A9: The ALR121-S01 operates with a 24 V DC power supply, which is standard for industrial instrumentation.
Q10: Is the ALR121-S01 suitable for high-pressure applications?
A10: Yes, with a pressure range of up to 2500 bar, the ALR121-S01 is ideal for high-pressure systems, including reactors and pipelines.
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