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- 621-2150R 6212150R
- Output Module
- USA
- 102 × 56 × 46 mm
- 0.38kg
- Xiamen, China
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Honeywell 621-2150R Pressure Sensor — Complete Product Overview, Specifications, Applications, Advantages, Model Recommendations, and FAQ
1. Product Name and Product Introduction
Product Name: Honeywell 621-2150R / 6212150R
The Honeywell 621-2150R is a rugged industrial pressure sensor developed for high-pressure measurement in harsh operating environments. It belongs to a mature industrial sensor platform designed to deliver stable, repeatable, and accurate pressure feedback for control and monitoring systems. The “R” designation indicates a reinforced version, offering enhanced mechanical strength and environmental resistance compared to standard models.
This sensor is built to handle demanding industrial conditions such as vibration, pressure shock, temperature fluctuation, and exposure to moisture or contaminants. Its analog output allows easy integration into automation systems, PLCs, and industrial controllers, making it a reliable choice for long-term pressure monitoring applications.
2. Brand and Product Series
Brand: Honeywell
Product Series: 621 Series Industrial Pressure Sensors
The 621 Series is a well-recognized family of industrial pressure sensors designed for versatility and durability. Sensors in this series are commonly used in automation, hydraulic systems, HVAC equipment, and industrial process control. The series is known for standardized interfaces, wide pressure ranges, selectable outputs, and compact yet robust construction.
3. Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 621-2150R |
| Pressure Type | Gauge pressure |
| Pressure Range | 0–1500 PSI |
| Accuracy | ±0.5% of Full Scale (FS) |
| Output Signal | 4–20 mA or 0–10 VDC |
| Supply Voltage | 10–30 VDC |
| Response Time | ≤ 5 ms |
| Operating Temperature | –40°C to +125°C |
| Media Compatibility | Air, inert gases, non-corrosive hydraulic oils |
| Mechanical Connection | 1/4″ NPT Male |
| Electrical Interface | Sealed industrial connector |
| Dimensions (L × W × H) | 102 × 56 × 46 mm |
| Weight | 0.38 kg |
| Housing Material | Stainless steel, reinforced design |
| Environmental Protection | IP68 |
| Shock Resistance | 50 g |
| Vibration Resistance | 10 g |
| Seal Material | Viton / Buna-N |
4. Product Applications
The Honeywell 621-2150R is designed for industrial environments where high-pressure measurement reliability is critical.
Industrial Automation and Control
In automated manufacturing systems, this sensor provides real-time pressure data for pneumatic and hydraulic components. Accurate pressure feedback ensures consistent actuator movement, system safety, and stable process control.
Hydraulic and Fluid Power Systems
The sensor is widely used in hydraulic circuits to monitor pump pressure, system load, and return-line pressure. This helps prevent overpressure damage and supports predictive maintenance strategies.
Mobile Machinery and Heavy Equipment
Installed in construction, mining, and agricultural machinery, the 621-2150R withstands vibration and shock while delivering reliable pressure readings under continuous operation.
HVAC and Refrigeration Equipment
Used to measure refrigerant line pressure, compressor pressure, and system pressure stability. Accurate measurement improves efficiency and protects critical components.
Water Treatment and Pumping Systems
The sensor monitors pressure in pipelines, pump stations, and filtration systems, supporting energy efficiency, flow stability, and system protection.
Industrial Process Monitoring
Applied in production lines and process vessels where pressure conditions must be controlled to ensure product quality and operational safety.
5. Product Advantages
The 621-2150R offers multiple practical advantages for industrial users and system designers.
High Accuracy and Long-Term Stability
With ±0.5% full-scale accuracy, the sensor ensures precise pressure readings and maintains calibration stability over long service periods.
Reinforced Rugged Design
The reinforced stainless-steel housing enhances resistance to mechanical stress, vibration, and pressure spikes, making it suitable for harsh industrial environments.
Flexible Output Compatibility
Selectable 4–20 mA or 0–10 VDC outputs allow easy integration with most industrial control systems without the need for additional signal conditioning.
Wide Temperature Operation
Reliable performance across a wide temperature range allows the sensor to be used both indoors and outdoors, even in extreme climates.
High Environmental Protection
IP68 protection ensures resistance to dust ingress and prolonged exposure to water, reducing failure risks in wet or contaminated environments.
Compact Industrial Form Factor
Despite its rugged construction, the sensor maintains a compact footprint for easy installation in tight or space-limited systems.
6. Recommended Models from the Same Series or Related Types
| Model | Pressure Range | Output | Accuracy | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 621-1201R | 0–200 PSI | 4–20 mA | ±0.5% FS | 80 × 45 × 35 | 0.23 |
| 621-1500R | 0–500 PSI | 0–10 VDC | ±0.5% FS | 90 × 50 × 40 | 0.30 |
| 621-2100R | 0–1000 PSI | 4–20 mA | ±0.5% FS | 95 × 52 × 42 | 0.34 |
| 621-2500R | 0–2000 PSI | 4–20 mA | ±0.5% FS | 105 × 58 × 48 | 0.42 |
| 621-3000R | 0–3000 PSI | 4–20 mA | ±0.5% FS | 110 × 60 × 50 | 0.48 |
7. Popular Models from the Same Brand
| Model | Sensor Type | Key Feature | Output | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| PX90 | Pressure Transducer | Industrial high accuracy | 4–20 mA / 0–10 V | 92 × 50 × 45 | 0.33 |
| SCX Series | Differential Pressure Sensor | Low differential pressure | 4–20 mA | 80 × 40 × 30 | 0.22 |
| ABP Series | Board-Mount Pressure Sensor | Compact integration | Analog / Digital | 30 × 20 × 12 | 0.05 |
| TCR700 | Temperature Sensor | Wide temperature range | 4–20 mA | 65 × 22 × 15 | 0.14 |
| RH700 | Humidity Sensor | Combined humidity & temperature | Digital | 48 × 48 × 16 | 0.11 |
8. Frequently Asked Questions (FAQ)
Q1: What type of pressure does the 621-2150R measure?
A1: It measures gauge pressure, meaning the pressure is referenced to ambient atmospheric pressure.
Q2: What is the maximum pressure range of this model?
A2: The 621-2150R is designed to measure pressures up to 1500 PSI.
Q3: What makes the “R” version different?
A3: The “R” version features reinforced construction and enhanced environmental protection for harsher operating conditions.
Q4: What output signals are available?
A4: The sensor supports 4–20 mA current output or 0–10 VDC voltage output.
Q5: Can the sensor be used outdoors?
A5: Yes, its wide temperature range and IP68 protection allow reliable outdoor operation.
Q6: Is the sensor compatible with hydraulic oil?
A6: Yes, it is suitable for non-corrosive hydraulic oils, air, and inert gases.
Q7: What is the recommended mounting method?
A7: The sensor should be mounted using the 1/4″ NPT thread with appropriate sealing and minimal vibration exposure.
Q8: Does the sensor require regular calibration?
A8: While factory-calibrated, periodic verification is recommended for critical applications.
Q9: Can this sensor handle vibration and shock?
A9: Yes, it is designed to withstand industrial vibration and shock levels typical of heavy equipment.
Q10: Which industries commonly use this model?
A10: Manufacturing automation, hydraulics, HVAC, water treatment, mobile machinery, and general industrial process control.