Section 1
Getting Started
The Chromalox 3101 is a compact 1/4 DIN program-
mable high/low limit controller with two independent
alarms. While designed to be low-cost, the 3101 has
many features of high-end limit controllers:
• Universal Sensor Input
• Switching Power Supply allows universal AC
voltage input (100 to 230 Vac)
• U. L. and U. L. (Canadian) Listed
as an Overtemperature Controller
• FM High/Low Limit Controller
• High Impact Plastic Bezel and Housing
• One high/low limit output and two independent
alarm outputs
• Time over/under setpoint display
• Max/Min process variable display
• One programmable Digital Input
• Isolated Serial Communications (optional)
• Analog Process Output (optional)
• Security protection
• 32°F to 149°F Operating Temperature
• ±0.2% Accuracy Specifi cation
• VIEW DATA key on front panel for a quick ac-
cess to Display Page
• Power Down Recovery feature retains limit and
alarm status when power is restored
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