APPENDIX B — SPECIFICATIONS
pg. 57
Return to TOC Curtis Model 3301T Digital Instrumentation – September 2021
APPENDIX B — SPECIFICATIONS
Nominal Voltage 12–96VDC
Minimum Voltage 9VDC
Maximum Voltage 120VDC
Minimum Startup Voltage 10VDC
Operating Current • Keyswitch on: 33–209mA
• Keyswitch off: 24–110mA
• LCD Heater On: 463–685mA
Dimensions
136 × 80 × 47.2 mm
Operating Temperature • With the LCD heater: –40°C to + 70°C
• Without the LCD heater: –20°C to + 70°C
Storage Temperature –40°C to + 85°C
Humidity Designed to the following requirements:
• Soak: EN 60068-2-78
• Cyclic: EN 60068-2-30
Ingress Protection Designed to the requirements of EN 60529:
• Face is sealed to IP65.
• Rear is sealed to IP65 for electronic components and to IP40 for the connector.
Optional parts can increase the connector’s protection to IP54.
Salt Spray (Fog) Designed to the requirements of ASTM B 117-73 as per SAE J1810.
Shock Designed to the requirements of EN 60068-2-27.
Vibration Designed to the following requirements:
• General: EN 60068-2-6
• Random: EN 60068-2-64
• Resonance: EN 60068-2-6
Safety Designed to the requirements of EN 61010-1: 2010, Part 1.
CE Designed to the following requirements:
• EMC: EN 12895: 2015.
• RoHS: RoHS directive 2015/863/EU (RoHS 3).
UL UL recognized component as per UL 583.
Model Encodement The model number encodement is 3301T-ZYYY where:
• Z indicates whether the model includes the optional LCD heater:
– 5 = not included
– 7 = included
• YYY is a sequential number code.
Note: Regulatory compliance of the complete system with the 3301T installed is the responsibility of the OEM.
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