Signal Generator Accuracy 0.2% DC mV (110mV), DC V (10V) DC mA (0–22mA) thermocouple sourcing 71A / 71B/ 71C

1. Three Models, One Reliable Signal Generator

The 71A, 71B, and 71C form a complete family of signal generators designed for professionals who need portability without sacrificing functionality. Whether you are working with DC voltage, current, or thermocouples, there is a model in this signal generator series to match your specific requirements. All three share the same rugged design, orange-and-black color scheme, and intuitive operation.

2. Source & Measure in One Handheld Device

Each signal generator combines sourcing and measurement functions. On the source side, all models output DC mV (110mV), DC V (10V), and DC mA (0–22mA) with a solid accuracy of 0.2%+4. Sink current capability (0–22mA) is also included. The 71B and 71C add thermocouple sourcing with 8 types (R, S, K, E, J, T, B, N), making them ideal for temperature simulation. For measurement, these signal generators handle DC mV (-10~110mV), DC V (-5~30V), DC mA (0~22mA), switch (close/open), and loop power supply (24V at 10% accuracy). The 71B and 71C also measure 8 thermocouple types, turning the signal generator into a complete temperature calibrator.

3. Smart Output: Manual Step & Auto Waveform

All three models of this signal generator series come standard with manual step output and auto waveform output. Manual stepping allows quick 0%, 25%, 50%, 75%, and 100% jumps for fast loop checks. Auto waveform output includes automatic stepping, sawtooth wave, and triangular wave, enabling the signal generator to simulate real-world process variations without constant operator intervention.

4. Built for the Field – Practical Features You’ll Actually Use

This signal generator is designed with the field technician in mind. Key practical features include:

• Flashlight built right into the device for working in dark panel cabinets or outdoor environments.
• LCD display with backlight for clear reading in low light.
• Auto power-off to preserve battery life when the signal generator is accidentally left on.
• Low battery indication so you never run out of power without warning.

Powered by 3×1.5V AAA batteries, this signal generator is always ready to go. Standard accessories include a manual, test leads, alligator clips, a fuse, and a protective pouch.

5. Loop Power Supply & 24V Detection

The built-in 24V loop power supply (10% accuracy) allows this signal generator to power a transmitter while simultaneously measuring current. No external power supply is needed, turning the device into a standalone loop diagnostic tool. This makes the 71A, 71B, and 71C more than just a signal generator – they are complete loop testers.

6. Compact, Lightweight, and Professional

With a product size of 151mm × 75mm × 42mm and a weight of only 500g, this signal generator fits comfortably in one hand or a tool belt. The black and orange design is both professional and easy to spot on a cluttered workbench.

7. Thermocouple Capability (71B & 71C Models)

For temperature applications, the 71B and 71C models are the signal generators to choose. Supporting 8 thermocouple types (R, S, K, E, J, T, B, N) for both sourcing and measurement, they eliminate the need for separate temperature simulators. This makes the 71B/71C a true multifunction signal generator for HVAC, refinery, and process automation work.