Dwyer ASG Analog Signal Generator, Ramp Function, Bar Graph LED, 0-20mA/0-10Vdc

The Dwyer ASG Analog Signal Generator is a professional-grade field instrument engineered for HVAC technicians and building automation specialists who need reliable, portable signal simulation for commissioning, calibration, and troubleshooting analog control systems. With selectable output modes and flexible power options, the ASG delivers the versatility demanded by today’s complex mechanical systems.

Dual Analog Output

The ASG simultaneously provides two industry-standard output signals, allowing technicians to drive and test a wide range of controllers, actuators, and transmitters without swapping equipment.

• 0 to 20 mA current loop output
• 0 to 10 Vdc voltage output

Ramp Function & Bar Graph LED Display

The built-in ramp function enables smooth, continuous signal sweeps across the full output range — ideal for verifying actuator travel, valve stroke, and control loop response. The intuitive bar graph LED display provides an at-a-glance visual indication of the current output level, reducing the need for a separate meter during testing.

• Ramp function for continuous signal sweep across output range
• Bar graph LED display for instant output level indication
• Easy one-hand operation in the field

Selectable Auto Shut-Off

The selectable auto shut-off feature conserves battery life during extended service calls, automatically powering down the unit when not in active use — a practical advantage for technicians working across multiple systems in a single day.

• Selectable auto shut-off to extend battery life
• Reduces risk of accidental battery drain on the job

Flexible Power Options

The ASG is designed for both bench and field use, accepting power from two convenient sources to match any work environment.

• 9 Volt battery operation for portable, cord-free field use
• 120 Vac power input for bench or panel room applications

Ideal Applications

• Commissioning and calibrating DDC and pneumatic-to-electric control systems
• Testing actuators, variable frequency drives (VFDs), and modulating valves
• Verifying analog input/output cards on building automation controllers
• Troubleshooting 4-20 mA and 0-10 Vdc control loops
• HVAC system startup and preventive maintenance