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PT300FT Manufacturer Specifications, Descriptions, and Features

Manufacturer Specifications:

• Model: PT300FT
• Type: Pressure Transmitter
• Pressure Range: 0-300 psi (adjustable variants may be available)
• Output Signal: 4-20 mA, 0-5 VDC, or 0-10 VDC (depending on model)
• Accuracy: ±0.5% FS (Full Scale)
• Operating Temperature: -40°C to 85°C (-40°F to 185°F)
• Process Connection: 1/4" NPT (other options may be available)
• Electrical Connection: M12 or flying leads (varies by model)
• Material: Stainless steel housing, wetted parts (316L SS)
• IP Rating: IP67 (dustproof and waterproof)
• Power Supply: 10-30 VDC

Descriptions:

The PT300FT is a rugged pressure transmitter designed for industrial and commercial applications. It provides precise pressure measurement for liquids and gases, with high resistance to environmental factors such as moisture, vibration, and temperature fluctuations. Its compact design allows for easy installation in tight spaces.

Features:

• High Accuracy: ±0.5% full-scale accuracy for reliable measurements.
• Wide Temperature Range: Operates in extreme conditions (-40°C to 85°C).
• Multiple Output Options: Configurable for 4-20 mA, 0-5 VDC, or 0-10 VDC signals.
• Durable Construction: Stainless steel housing and wetted parts for corrosion resistance.
• IP67 Protection: Suitable for harsh environments.
• Zero & Span Adjustments: Allows for field calibration.
• Compact & Lightweight: Easy to integrate into existing systems.
• Long-Term Stability: Minimal drift over time for consistent performance.

For exact specifications, refer to the manufacturer’s datasheet.

# PT300FT: Application Scenarios, Design Considerations, and Implementation

## Practical Application Scenarios

The PT300FT is a high-precision temperature sensor designed for demanding industrial and automotive applications. Its robust construction and wide operating range (-40°C to +125°C) make it suitable for environments where thermal monitoring is critical.

1. Automotive Systems

The PT300FT is widely used in engine control units (ECUs) and battery management systems (BMS) for electric vehicles. Its fast response time (<100ms) ensures real-time temperature tracking, preventing overheating in power electronics and lithium-ion batteries.

2. Industrial Automation

In motor drives and PLCs, the sensor provides reliable thermal feedback, enabling predictive maintenance. Its ±0.5°C accuracy ensures optimal performance in CNC machines and robotic arms, where thermal drift can affect precision.

3. Consumer Electronics

High-end appliances, such as induction cooktops and HVAC systems, leverage the PT300FT for overheat protection. Its low power consumption (<1mA) makes it ideal for battery-operated devices.

## Common Design-Phase Pitfalls and Avoidance Strategies

1. Improper PCB Layout

*Pitfall:* Placing the sensor near heat-generating components (e.g., voltage regulators) introduces measurement errors.

*Solution:* Isolate the PT300FT on a separate PCB section with thermal vias for heat dissipation.

2. Inadequate Calibration

*Pitfall:* Relying solely on factory calibration may lead to drift in extreme conditions.

*Solution:* Implement a two-point calibration routine during system initialization to account for offset/gain errors.

3. Signal Integrity Issues

*Pitfall:* Long trace lengths or noisy power supplies degrade analog output accuracy.

*Solution:* Use shielded cabling for analog signals and decouple the power supply with a 100nF ceramic capacitor.

## Key Technical Considerations for Implementation

1. Thermal Coupling

Ensure direct mechanical contact between the PT300FT and the target surface using thermal epoxy or screws. Poor coupling delays response time.

2. Output Interface

The PT300FT supports both analog (0–5V) and digital (I2C) outputs. Select the interface based on noise immunity requirements—digital for long-distance communication.

3. Environmental Protection

In harsh environments, conformal coating or IP-rated enclosures are recommended to prevent moisture ingress and chemical corrosion.

By addressing these factors, engineers can maximize the PT300FT’s performance while mitigating common integration challenges.