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Yokogawa YCB146 Product Introduction
The Yokogawa YCB146 is a high-precision, robust, and reliable current-to-pressure (I/P) converter designed for industrial automation and process control applications. It converts electrical signals (4–20 mA) into proportional pneumatic output pressure (3–15 psi or 20–100 kPa), ensuring accurate control of pneumatic actuators, valves, and other devices in harsh environments. The YCB146 is widely used in industries such as oil & gas, chemical, power generation, and water treatment due to its durability and exceptional performance.
Product Parameters
| Parameter | Specification |
|---|---|
| Input Signal | 4–20 mA DC |
| Output Pressure | 3–15 psi / 20–100 kPa |
| Supply Pressure | 20–140 psi / 140–1000 kPa |
| Accuracy | ±0.5% of span |
| Repeatability | ±0.2% of span |
| Ambient Temperature | -40°C to +85°C (-40°F to +185°F) |
| Housing Material | Aluminum alloy (standard) |
| Protection Rating | IP65 (NEMA 4X) |
| Weight | 0.2 kg |
| Dimensions | 22.5 x 100 x 115mm |
| Mounting | Panel or DIN rail |
Product Applications
The YCB146 is ideal for:
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Process Control Systems – Regulating pneumatic valves in chemical plants.
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Oil & Gas – Controlling actuators in pipelines and refineries.
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Power Plants – Managing steam and fuel valves.
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Water Treatment – Adjusting flow control valves.
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Pharmaceuticals – Precise pressure control in sterile environments.
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Food & Beverage – Automation in processing lines.
Product Advantages
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High Accuracy – ±0.5% span ensures precise control.
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Durability – Robust aluminum housing with IP65 protection.
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Wide Temperature Range – Operates in extreme conditions (-40°C to +85°C).
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Easy Installation – Supports panel or DIN rail mounting.
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Low Air Consumption – Energy-efficient design.
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Stable Performance – Minimal drift over time.
Frequently Asked Questions (FAQ)
Q1: What is the operating principle of the YCB146?
A1: It converts a 4–20 mA electrical signal into a proportional pneumatic output (3–15 psi or 20–100 kPa).
Q2: Can the YCB146 be used in explosive environments?
A2: Yes, with optional explosion-proof certifications (e.g., ATEX, IECEx).
Q3: What is the response time of the YCB146?
A3: Typically less than 2 seconds for full-scale output.
Q4: Is the YCB146 compatible with corrosive gases?
A4: Yes, with optional corrosion-resistant coatings.
Q5: How often should the YCB146 be calibrated?
A5: Recommended annually or per process requirements.
Q6: Can the YCB146 be used with higher supply pressures?
A6: Yes, up to 140 psi (1000 kPa).
Q7: What maintenance is required?
A7: Periodic cleaning and air filter checks.
Q8: Does the YCB146 require an external power supply?
A8: No, it is loop-powered (4–20 mA).
Q9: Can the output pressure range be adjusted?
A9: Yes, via internal span adjustment.
Q10: Is the YCB146 suitable for outdoor use?
A10: Yes, with IP65 protection against dust and water ingress.
Recommended Related & Popular Models
Same Series / Related Models
| Model | Description | Key Feature |
|---|---|---|
| YCB141 | Basic I/P converter | Compact design, cost-effective |
| YCB143 | High-performance I/P converter | ±0.25% accuracy |
| YCB145 | Explosion-proof I/P converter | ATEX/IECEx certified |
| YCB147 | Digital I/P converter | HART communication |
| YCB149 | High-flow I/P converter | For large actuators |
| YCB150 | Multi-input I/P converter | Supports multiple signal types |
Popular Yokogawa Models
| Model | Description | Application |
|---|---|---|
| EJA110E | Differential pressure transmitter | Flow measurement |
| DPharp EJX | Multivariable pressure transmitter | High-accuracy process control |
| UTAdvanced | Ultrasonic flowmeter | Liquid/gas flow measurement |
| AXF Series | Magnetic flowmeter | Conductive fluid measurement |
| CENTUM VP | Distributed control system (DCS) | Plant automation |
| F3RS01-0N | Safety relay | Machine safety systems |
