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Honeywell 621‑2200RC / 621‑2200R Pressure Sensor — In‑Depth Product Overview, Specifications, Applications, Advantages, Related Models, Popular Brand Models, and FAQ
1. Product Name and Introduction
Product Name: Honeywell 621‑2200RC / 621‑2200R
The Honeywell 621‑2200RC (often also referred to as 621‑2200R in industry catalogs) is a reinforced, corrosion‑resistant industrial pressure sensor engineered for demanding environments and heavy‑duty applications. This sensor belongs to a robust series designed to deliver stable, accurate gauge pressure measurements with analog outputs suitable for integration into industrial control systems, data acquisition units, and programmable logic controllers.
It is built to withstand mechanical shock, vibration, moisture, and temperature extremes while maintaining long‑term stability and performance. The RC/R designation indicates enhanced resistance to corrosive elements, extended protection against dust and water ingress, and a reinforced enclosure compared with standard versions.
The Honeywell 621‑2200RC is ideal for systems where pressure measurement is critical for safety, control, diagnostics, and performance optimization across industrial, mobile, and process automation settings.
2. Brand and Series
Brand: Honeywell
Series: 621 Series Industrial Pressure Sensors
The 621 Series is a family of industrial pressure transducers known for rugged design, selectable electronic outputs, wide operating temperature ranges, standardized industrial connections, and long‑term reliability. These sensors are widely used in automation, fluid power systems, HVAC/R equipment, heavy machinery, water treatment, and other industrial applications where precise pressure monitoring is required.
3. Product Specifications
| Parameter | Specification |
|---|---|
| Model | 621‑2200RC / 621‑2200R |
| Pressure Type | Gauge pressure |
| Pressure Range | 0–2200 PSI |
| Accuracy | ±0.5% of Full Scale (FS) |
| Output Signal | Selectable: 4–20 mA or 0–10 VDC |
| Supply Voltage | 10–30 VDC |
| Response Time | ≤ 5 ms |
| Operating Temperature Range | –40°C to +125°C |
| Media Compatibility | Air, inert gases, non‑corrosive hydraulic fluids |
| Mechanical Connection | 1/4″ NPT Male |
| Electrical Connector | Industrial sealed 3‑pin connector |
| Dimensions (L × W × H) | 105 × 58 × 48 mm |
| Weight | 0.43 kg |
| Housing Material | Stainless steel with reinforced corrosion‑resistant finish |
| Seal Material | Viton or Buna‑N elastomer |
| Environmental Protection | IP68 |
| Vibration Resistance | 10 g |
| Shock Resistance | 50 g |
4. Product Applications
The Honeywell 621‑2200RC / 621‑2200R pressure sensor is suitable for numerous demanding industrial applications where accurate pressure measurement and robust performance are crucial.
Industrial Automation and Control Systems
Used in manufacturing lines to monitor pneumatic and hydraulic system pressures. Accurate feedback enables consistent control of actuators, valves, cylinders, and safety interlocks, improving efficiency and reliability.
Hydraulic and Pneumatic Systems
Applies to mobile and static hydraulic systems, pumps, compressors, and fluid power circuits. Pressure monitoring prevents system overload, protects components, and supports predictive maintenance.
Heavy Machinery and Mobile Equipment
Installed on construction, mining, and agricultural equipment to measure system pressures under vibration, load variation, and field conditions. Reinforced sensor design ensures longevity and resistance against mechanical abuse.
HVAC and Refrigeration Systems
Used to monitor refrigerant pressure, duct pressure, and compressor output. Reliable measurement supports efficient heating and cooling, prevents overpressure damage, and protects system components.
Water & Wastewater Treatment
Pressure measurement in pump stations, distribution networks, filtration systems, and treatment tanks ensures correct flow rates, protects against overpressurization, and enhances energy efficiency.
Energy Production and Power Systems
Used in steam, turbine, and auxiliary fluid circuits to monitor critical pressures for safety interlocks, system diagnostics, and operational reliability.
5. Product Advantages
The 621‑2200RC / 621‑2200R offers a range of performance and durability advantages suited for industrial use.
High Accuracy and Repeatable Performance
With a typical accuracy of ±0.5% of full‑scale, the sensor delivers consistent and reliable pressure readings, essential for feedback control and process stability.
Reinforced Corrosion Resistance
Reinforced housing and corrosion‑resistant materials ensure reliable performance in environments with moisture, chemical exposure, and airborne contaminants that would degrade standard sensors.
Selectable Output Compatibility
Selectable analog outputs such as 4–20 mA or 0–10 VDC allow compatibility with a broad range of industrial controllers, PLCs, and data acquisition systems without extra converters.
Wide Operating Temperature Range
Designed to function in temperatures ranging from –40°C to +125°C, the sensor is suitable for outdoor installations and high‑temperature industrial enclosures.
Robust Environmental Protection
With an IP68 rating, the sensor resists dust ingress and continuous immersion in water, reducing the risk of field failure in harsh environments.
Compact and Easy to Install
Despite its rugged construction, the compact dimensions and standard 1/4″ NPT connection allow easy installation in tight spaces without requiring large fittings.
High Shock and Vibration Tolerance
Designed to withstand vibration up to 10 g and shock up to 50 g, it is suitable for mobile equipment and heavy machinery operating under dynamic conditions.
6. Recommended Models — Same Series or Related Types
The following five models are related to the 621‑2200RC / 621‑2200R in the 621 Series or provide similar industrial pressure measurement capabilities.
| Model | Pressure Range | Output | Accuracy | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 621‑1500RC | 0–1500 PSI | 4–20 mA / 0–10 V | ±0.5% FS | 100 × 55 × 45 | 0.36 |
| 621‑2100RC | 0–1000 PSI | 4–20 mA / 0–10 V | ±0.5% FS | 95 × 52 × 42 | 0.34 |
| 621‑2150RC | 0–1500 PSI | 4–20 mA / 0–10 V | ±0.5% FS | 100 × 55 × 45 | 0.38 |
| 621‑2500RC | 0–2000 PSI | 4–20 mA | ±0.5% FS | 105 × 58 × 48 | 0.41 |
| 621‑3000RC | 0–3000 PSI | 4–20 mA | ±0.5% FS | 110 × 60 × 50 | 0.47 |
7. Popular Models — Other Strong Choices from the Same Brand
Below are five widely used sensor models from the same brand, selected for their performance and relevance in industrial measurement tasks.
| 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 | Measures differential pressure | 4–20 mA | 80 × 40 × 30 | 0.21 |
| ABP Series | Board‑Mount Pressure Sensor | Compact OEM integration | Analog / Digital | 30 × 20 × 12 | 0.05 |
| TCR700 | Temperature Sensor | Wide temperature sensing range | 4–20 mA | 65 × 22 × 15 | 0.14 |
| RH700 | Humidity & Temperature Sensor | Dual humidity and temperature | Digital | 48 × 48 × 16 | 0.11 |
8. Frequently Asked Questions (FAQ)
Q1: What type of pressure does the 621‑2200RC measure?
A1: It measures gauge pressure, which is pressure relative to ambient atmospheric pressure.
Q2: What is the pressure range of this model?
A2: The 621‑2200RC is designed to measure pressures from 0 to 2200 PSI, suitable for high‑pressure industrial systems.
Q3: What makes the “RC” version different from non‑reinforced models?
A3: The “RC” (Reinforced Corrosion‑resistant) version has enhanced housing materials and seals to withstand corrosive environments, moisture, and contaminants better than standard variants.
Q4: What output options are available?
A4: Users can select between 4–20 mA current loop and 0–10 VDC voltage outputs depending on the needs of their control system.
Q5: What accuracy can be expected from this sensor?
A5: This model provides an accuracy of ±0.5% of full scale, giving consistent and reliable pressure measurement.
Q6: Can this sensor be used outdoors?
A6: Yes. With an operating temperature range from –40°C to +125°C and IP68 protection, it is suitable for outdoor or harsh industrial environments.
Q7: What media can be measured with this sensor?
A7: It is compatible with air, inert gases, and non‑corrosive hydraulic fluids. Always confirm media compatibility for specific installations.
Q8: What mechanical connection standard does it use?
A8: It uses a standard 1/4″ NPT male threaded mechanical connection for easy installation.
Q9: Does this sensor require calibration before use?
A9: The sensor is factory calibrated. Periodic verification or calibration may be recommended for mission‑critical applications.
Q10: Which industries commonly use this model?
A10: The 621‑2200RC is widely used in industrial automation, hydraulics, HVAC/R systems, water/wastewater treatment, mobile machinery, and energy systems where accurate pressure measurement is essential.