Portable Multifunction Calibrator

Q1: What is a Process Calibrator?
A1: A process calibrator is a device used to test, calibrate, and troubleshoot process instrumentation such as temperature sensors, pressure transmitters, and electrical signal sources. By simulating and measuring various signals, process calibrators enable engineers and technicians to validate system performance.

Q2: What are the types of process calibrators?
A2: Multifunction Calibrators - Capable of handling multiple types of signals including voltage, current, resistance, and frequency. Temperature Calibrators - Used specifically for thermocouples and RTDs to ensure precise temperature measurements. Pressure Calibrators - Designed for testing pressure-based instruments and ensuring accuracy in fluid systems. Loop Calibrators - Primarily used for 4-20 mA control loops in industrial automation systems.

Q3: How does a process calibrator work?
A3: A process calibrator is a multifunctional test tool used in industrial settings to simulate, measure, and source various process signals to calibrate and troubleshoot instruments.

• Simulation (Sourcing Mode): The calibrator mimics a sensor or transmitter: For example, it can output a 4-20 mA signal to test a control system input. It can simulate a thermocouple or RTD to test temperature controllers.
• Measurement Mode: The calibrator measures signals coming from sensors or transmitters: It can measure the output of a 4-20 mA transmitter. Or it can read thermocouple or RTD signals to verify temperature readings.
• Loop Power Supply: Many calibrators can provide loop power (usually 24V DC) to power a 2-wire transmitter during testing—handy when you’re not connected to the control system.
• Documentation and HART/Fieldbus Communication (in advanced models): Some calibrators support automatic documentation of calibration results. Others can communicate with smart transmitters (e.g., HART protocol) to adjust or troubleshoot them.

Tips: What types of signals can the portable multifunction calibrator generate?

The portable multifunction calibrator can generate a wide range of standard process calibration signals used in industrial instrumentation and control systems, including:

• DC Voltage Output: Supports both millivolt (mV) and volt (V) ranges for calibrating indicators, transmitters, and control modules.
• DC Current Output: Provides precise milliamp (mA) output, commonly used for 4–20 mA loop calibration and testing of current-driven devices.
• Simulated Resistance: Actively simulates resistance values to test resistance-based sensors and measurement circuits without the need for external resistors.
• Frequency Output: Generates a TTL-level square wave signal for calibrating frequency inputs, pulse counters, and digital control systems.
• 24 V DC Loop Power: Includes a built-in 24 V power supply to directly power and test two-wire transmitters during calibration.

Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.

What is covered?

SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.

What is not covered?

• Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
• Expendable parts.
• Routine cleaning or normal cosmetic and mechanical wear.
• Damage from misuse, abuse or neglect.
• Damage from use of parts other than SISCO approved.
• Damage from use outside the product’s usage or storage parameters.
• Damage from use of parts not sold by SISCO.
• Damage from modification or incorporation into other products.
• Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
• Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.