ProductPRODUCT
Featured products
Contact Us
- Honeywell
- 621-6550 6216550
- Output Module
- USA
- 152 × 82 × 66 mm
- 1.02kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 9
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| [email protected] | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Honeywell 621‑6550 (6216550) Pressure Sensor — Comprehensive Overview, Specifications, Applications, Advantages, Related Models, Popular Brand Models, and FAQ
1. Product Name and Introduction
Product Name: Honeywell 621‑6550 / 6216550
The Honeywell 621‑6550 is a high-performance industrial gauge pressure sensor designed for extreme high-pressure applications. Part of the 621 Series Industrial Pressure Sensors, it is engineered to provide precise, reliable, and stable pressure measurements across a broad range of industrial environments.
Built with rugged construction and robust sensing technology, the 621‑6550 ensures long-term operational reliability, even under harsh conditions such as vibration, shock, high temperature, and exposure to dust or moisture. Its high-pressure range capability makes it ideal for hydraulic systems, process control, power generation, heavy machinery, and fluid power applications where safety and accuracy are critical.
The sensor integrates seamlessly with industrial control systems such as PLC, SCADA, and automated monitoring units, offering standard analog output options.
2. Brand and Series
Brand: Honeywell
Series: 621 Series Industrial Pressure Sensors
The 621 Series is well-known in the industrial sector for:
-
Rugged construction for high-reliability in harsh conditions
-
Wide pressure ranges from low to extreme high pressures
-
Analog output flexibility (4–20 mA or 0–10 VDC)
-
Consistent long-term accuracy with minimal drift
-
Standardized mechanical and electrical interfaces for simplified installation
The 621‑6550 stands out as one of the highest-pressure members of this series.
3. Product Specifications
| Parameter | Specification |
|---|---|
| Model | 621‑6550 |
| Pressure Type | Gauge pressure |
| Pressure Range | 0–6550 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 | Sealed industrial 3-pin connector |
| Dimensions (L × W × H) | 152 × 82 × 66 mm |
| Weight | 1.02 kg |
| Housing Material | Reinforced stainless steel |
| Seal Material | Viton or Buna-N elastomer |
| Environmental Protection | IP67 |
| Vibration Resistance | 15 g |
| Shock Resistance | 60 g |
4. Product Applications
The 621‑6550 is designed for high-pressure industrial applications, including:
1. Industrial Automation
Used in automated machinery for actuator, valve, and pressure loop monitoring, ensuring safe and precise control.
2. Heavy Machinery & Mobile Equipment
Suitable for construction, mining, and agricultural machinery where hydraulic pressures reach extreme levels.
3. Hydraulic Systems
Supports high-pressure hydraulic circuits, pumps, and fluid control systems to prevent component damage and maintain efficiency.
4. Energy & Power Generation
Applied in turbines, generator systems, and high-pressure auxiliary circuits where accurate pressure measurement ensures safe operation.
5. Water & Wastewater Management
Used in high-pressure pumping stations and distribution networks to monitor and maintain pressure stability.
6. Chemical & Petrochemical Processes
Provides reliable pressure measurement in process control loops, supporting safety, efficiency, and regulatory compliance.
5. Product Advantages
-
High Accuracy Across High Pressure Range: ±0.5% FS accuracy ensures precise readings.
-
Selectable Output Signals: 4–20 mA or 0–10 VDC for flexible integration.
-
Rugged Construction: Stainless steel housing and elastomer seals ensure durability.
-
Wide Operating Temperature: –40°C to +125°C allows use in extreme environments.
-
IP67 Environmental Protection: Resistant to dust and temporary water immersion.
-
Vibration and Shock Tolerance: 15 g vibration and 60 g shock rated.
-
Standard Industrial Interfaces: 1/4″ NPT mechanical connection and sealed connector simplify installation.
6. Recommended Models — Same Series or Related Types
| Model | Pressure Range | Output | Accuracy | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 621‑6500 | 0–6500 PSI | 4–20 mA / 0–10 V | ±0.5% FS | 150 × 80 × 65 | 0.99 |
| 621‑6550R | 0–6550 PSI | 4–20 mA / 0–10 V | ±0.5% FS | 152 × 82 × 66 | 1.03 |
| 621‑6350 | 0–6350 PSI | 4–20 mA / 0–10 V | ±0.5% FS | 150 × 80 × 65 | 0.98 |
| 621‑6300R | 0–6300 PSI | 4–20 mA / 0–10 V | ±0.5% FS | 150 × 80 × 65 | 0.95 |
| 621‑6250RC | 0–6250 PSI | 4–20 mA | ±0.5% FS | 150 × 80 × 64 | 0.96 |
7. Popular Models — Other Strong Choices from the Same Brand
| Model | Sensor Type | Key Feature | Output | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| PX90 | Pressure Transducer | High industrial pressure accuracy | 4–20 mA / 0–10 V | 92 × 50 × 45 | 0.33 |
| SCX Series | Differential Pressure Sensor | ΔP measurement | 4–20 mA | 80 × 40 × 30 | 0.21 |
| ABP Series | Compact Board-Mount Sensor | OEM integration | Analog / Digital | 30 × 20 × 12 | 0.05 |
| TCR700 | Temperature Sensor | Wide temperature range | 4–20 mA | 65 × 22 × 15 | 0.14 |
| RH700 | Humidity & Temperature Sensor | Combined humidity & temperature | Digital | 48 × 48 × 16 | 0.11 |
8. Frequently Asked Questions (FAQ)
Q1: What type of pressure does the 621‑6550 measure?
A1: It measures gauge pressure, which is pressure relative to atmospheric pressure.
Q2: What is the pressure range of this sensor?
A2: It covers 0–6550 PSI, suitable for very high-pressure systems.
Q3: What output signal options does it offer?
A3: It provides selectable 4–20 mA current or 0–10 VDC voltage outputs.
Q4: How accurate is the 621‑6550?
A4: Accuracy is ±0.5% FS, ensuring stable and reliable measurement.
Q5: What operating temperature can it handle?
A5: Operating range is –40°C to +125°C.
Q6: What media is compatible?
A6: Compatible with air, inert gases, and non-corrosive hydraulic fluids.
Q7: What mechanical connection is used?
A7: Standard 1/4″ NPT male connection for easy installation.
Q8: What environmental protection does it have?
A8: Rated IP67, resistant to dust and temporary water immersion.
Q9: Is it factory calibrated?
A9: Yes, it comes factory-calibrated with high precision.
Q10: Which industries commonly use this sensor?
A10: It is widely used in industrial automation, hydraulic systems, heavy machinery, power generation, water/wastewater management, and chemical/petrochemical applications.