PIE

PIE

PIE (Practical Instrument Electronics) is a US-based manufacturer specializing in portable process calibration instruments for industrial instrumentation and control systems. The company produces a comprehensive range of calibrators for 4–20 mA current loops, RTD and thermocouple temperature sensors, pressure signals, and multifunction process variables. PIE calibrators are designed for field technicians, instrumentation engineers, and calibration laboratories requiring reliable, easy-to-use tools for maintaining and verifying process instruments.

PIE's product line includes handheld loop calibrators, automated HART-compatible calibrators, pneumatic and hydraulic hand pumps for pressure calibration, and diagnostic RTD and milliamp calibrators. The company's instruments are widely used in process industries where accurate calibration of transmitters, sensors, and controllers is essential for safe and efficient plant operation.

Key Product Lines

• Loop Calibrators: 4–20 mA source, simulate, and measure calibrators for current loop verification and troubleshooting
• Thermocouple and RTD Calibrators: Instruments for sourcing and measuring temperature sensor signals across common thermocouple and RTD types
• Multifunction Process Calibrators: Calibrators supporting multiple signal types including voltage, current, frequency, and resistance
• Pressure Calibration Accessories: Pneumatic and hydraulic scissor hand pumps for generating and applying pressure during calibration

Industries Served

PIE calibration instruments are used in oil and gas, chemical processing, water and wastewater treatment, pharmaceutical manufacturing, food and beverage production, and power generation facilities — wherever accurate process transmitter calibration is required for regulatory compliance and process control reliability.