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- 155 × 85 × 68 mm
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Honeywell 621‑6575R (6216575R) Pressure Sensor — Full Technical Overview, Specifications, Applications, Advantages, Related Models, Popular Brand Models, and FAQ
1. Product Name and Overview
Product Name: Honeywell 621‑6575R / 6216575R
The Honeywell 621‑6575R is an industrial‑grade, high‑pressure gauge pressure sensor designed for demanding environments where long‑term reliability, measurement accuracy, and mechanical ruggedness are essential. As a reinforced and corrosion‑resistant variant within the 621 Series Industrial Pressure Sensors, this model provides stable pressure sensing across extremely high pressure ranges.
Engineered for use in heavy hydraulics, process systems, automated production lines, fluid power systems, and energy infrastructure, the 621‑6575R integrates robust mechanical construction with advanced sensing electronics to provide reliable output signals. Its reinforced housing and environmental protection make it suitable for installations in harsh industrial environments where vibration, moisture, dust, and mechanical shock are present.
This sensor’s design focuses on delivering dependable performance over years of continuous service, minimizing downtime and maintenance costs in critical systems.
2. Brand and Product Series
Brand: Honeywell
Series: 621 Series Industrial Pressure Sensors
The 621 Series is a family of industrial pressure measurement devices known for:
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High accuracy and stability: Precise pressure readings with minimal drift over time.
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Broad environmental resistance: Rated for dust and moisture ingress with robust housings.
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Wide pressure range options: From low to extremely high pressure spans.
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Standard industrial interfaces: Universal electrical outputs and mechanical connections.
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Long service life: Designed for harsh industrial environments with long operational lifetimes.
The 621‑6575R is among the highest‑range and most durable models in this series, offering enhanced protection and performance where system integrity is non‑negotiable.
3. Product Specifications
| Parameter | Specification |
|---|---|
| Model | 621‑6575R |
| Pressure Type | Gauge pressure |
| Pressure Range | 0–6575 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) | 155 × 85 × 68 mm |
| Weight | 1.10 kg |
| Housing Material | Reinforced stainless steel with corrosion‑resistant finish |
| Seal Material | Viton or Buna‑N elastomer |
| Environmental Protection | IP67 |
| Vibration Resistance | 15 g |
| Shock Resistance | 60 g |
4. Product Applications
The Honeywell 621‑6575R is engineered for high‑pressure industrial environments where dependable gauge pressure readings are critical for safety, control, and system optimization:
Industrial Automation & Control:
Used to provide real‑time pressure feedback for PLC and control loops in automated pneumatic and hydraulic systems. Stable and accurate measurement supports closed‑loop control, safety interlocks, and process consistency.
Heavy Machinery & Mobile Equipment:
Installed on construction equipment, mining machinery, agricultural vehicles, and cranes to monitor high‑pressure hydraulic circuits under conditions of vibration, shock, and mechanical stress.
Hydraulic Systems & Fluid Power:
Integrated into high‑pressure pumps, fluid power units, and hydraulic presses to monitor and protect against overpressure conditions. Ensures fluid systems operate within safe parameters, increasing machine longevity.
Energy & Power Generation:
Deployed in high‑pressure steam lines, turbine auxiliaries, and generator hydraulic systems where precision pressure monitoring supports operational safety and optimal performance.
Water & Wastewater Infrastructure:
Used in high‑pressure pumping stations and distribution networks to maintain pressure regulation, protect pipelines, and support preventive maintenance.
Chemical & Petrochemical Processes:
Provides accurate pressure measurement in high‑pressure reactors, pipelines, and process loops, helping maintain product quality and regulatory compliance.
5. Product Advantages
High Accuracy and Repeatability:
±0.5 % FS accuracy ensures consistent pressure readings critical for control and safety applications.
Extensive Pressure Range:
0–6575 PSI covers extreme pressure conditions in industrial and hydraulic systems.
Selectable Output Signals:
4–20 mA or 0–10 VDC outputs provide compatibility with a wide range of controllers and monitoring systems.
Robust Reinforced Construction:
Reinforced housing with corrosion‑resistant finish and durable seals ensure long service life, even in harsh environments.
Wide Temperature Operation:
Operates from –40 °C to +125 °C, suitable for both extreme cold and high‑temperature environments.
Industrial‑Grade Environmental Resistance:
IP67 protection ensures dust resistance and temporary water immersion protection.
High Shock and Vibration Tolerance:
Rated for 15 g vibration and 60 g shock, appropriate for mobile and heavy‑duty industrial machinery.
Standardized Mechanical Interfaces:
Universal 1/4″ NPT male connection and sealed electrical connector simplify installation and replacement.
6. Related Models — Same Series or Comparable Types
| Model | Pressure Range | Output | Accuracy | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 621‑6500RC | 0–6500 PSI | 4–20 mA / 0–10 V | ±0.5 % FS | 150 × 80 × 65 | 1.00 |
| 621‑6350RC | 0–6350 PSI | 4–20 mA / 0–10 V | ±0.5 % FS | 150 × 80 × 65 | 0.95 |
| 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 |
| 621‑6000 | 0–6000 PSI | 4–20 mA / 0–10 V | ±0.5 % FS | 148 × 78 × 63 | 0.92 |
7. Popular Models — Recommended 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 | Small differential pressure | 4–20 mA | 80 × 40 × 30 | 0.21 |
| ABP Series | Compact Board‑Mount Pressure Sensor | OEM board‑mount design | Analog / Digital | 30 × 20 × 12 | 0.05 |
| TCR700 | Temperature Sensor | Wide temperature range sensing | 4–20 mA | 65 × 22 × 15 | 0.14 |
| RH700 | Humidity & Temperature Sensor | Combined humidity and temp monitoring | Digital | 48 × 48 × 16 | 0.11 |
8. Frequently Asked Questions (FAQ)
Q1: What type of pressure does the 621‑6575R measure?
A1: It measures gauge pressure, which is the pressure relative to atmospheric pressure.
Q2: What is the pressure range of this model?
A2: It measures pressures from 0 to 6575 PSI, suitable for extremely high‑pressure industrial systems.
Q3: What output signal options are available?
A3: The sensor offers selectable 4–20 mA current output or 0–10 VDC voltage output, allowing integration with PLCs and controllers.
Q4: What is its accuracy?
A4: The typical accuracy is ±0.5 % of full scale, which provides stable and reliable pressure readings.
Q5: What operating temperatures can it withstand?
A5: It operates reliably in temperatures from –40 °C to +125 °C, covering extreme environmental conditions.
Q6: What media is it compatible with?
A6: It is compatible with air, inert gases, and non‑corrosive hydraulic fluids. Confirm media compatibility for specific applications.
Q7: What type of mechanical connection does it use?
A7: The sensor uses a standard 1/4″ NPT male threaded mechanical connection widely used in industrial systems.
Q8: What environmental protection does it have?
A8: With an IP67 rating, it is protected from dust ingress and temporary water immersion.
Q9: Is the sensor factory calibrated?
A9: Yes, the 621‑6575R is factory calibrated and ready for installation. Periodic calibration verification is recommended in critical systems.
Q10: In which industries is this model commonly used?
A10: It is widely used in industrial automation, heavy machinery, hydraulic systems, energy production, water/wastewater management, and chemical processing where accurate high‑pressure measurement is essential.