The Omega HH506RA is a portable dual-input digital thermometer engineered for precise temperature measurement across industrial, laboratory, and field applications. It accommodates seven thermocouple types (K, J, T, E, R, S, N) with measurement ranges spanning −210 to 1767 °C and delivers 2.5 readings per second. The instrument features a 4½-digit LCD display with triple-parameter visibility (T1, T2, and differential/time), settable backlight, and standard functions including MAX, MIN, AVG, relative measurement, and HOLD mode.
Technical Specifications
• Input Channels: 2 independent thermocouple inputs
• Thermocouple Types: K, J, T, E, R, S, N
• Temperature Range (by type):
– K Type: −200 to 1372 °C (−328 to 2501 °F)
– J Type: −210 to 1200 °C (−346 to 2192 °F)
– T Type: −200 to 400 °C (−328 to 752 °F)
– E Type: −210 to 1000 °C (−346 to 1832 °F)
– R Type: 0 to 1767 °C (32 to 3212 °F)
– S Type: 0 to 1767 °C (32 to 3212 °F)
– N Type: −50 to 1300 °C (−58 to 2372 °F)
• Resolution: 0.1 °C / 1 °C or 0.1 °F / 1 °F selectable
• Accuracy (K/J/T/E): ±(0.05% of reading + 0.3 °C)
• Accuracy (R/S): ±(0.1% of reading + 1 °C)
• Accuracy (N): ±(0.05% of reading + 0.7 °C)
• Sampling Rate: 2.5 samples/second
• Display: 4½-digit LCD, maximum reading 19999
• Data Logging: Up to 1024 values in 16 groups of 64 records; logging interval 1 second to 24 hours
• Manual Save Capacity: 128 timestamped samples
– Key Features
• RS232C interface with included Windows-compatible software (98/NT/2000/XP)
• Optional USB connectivity
• IP65 ingress protection—water and splash resistant, dustproof
• Automatic power-off function
• °C/°F unit switching
• 9 V battery powered (100 hours typical runtime)
– Physical & Environmental
• Dimensions: 192 mm × 91 mm × 53 mm
• Weight: 255 g
• Protection Rating: IP65
– Typical Applications
Thermocouple-based temperature monitoring in HVAC commissioning, furnace control verification, process validation, and environmental chamber monitoring.

















