Supported Applications
The Omega HH374 Series is a handheld, multi-channel data logger thermometer designed for industrial temperature measurement and data logging applications. It features four channels specifically configured for Type K thermocouple inputs.
Operating Conditions & Performance
The series supports a measurement range of -200 to +1372°C (-328 to +2501°F). Resolution is specified as 0.1°C/°F for readings below 1000 and 1°C/°F at or above 1000. Accuracy is rated at ±(0.1% of reading + 0.7°C) or ±(0.1% of reading + 1.4°F), with specifications defined for ambient temperatures between 18°C (64°F) and 28°C (82°F). Outside this range, a temperature coefficient applies: 0.01% of reading + 0.05°C per °C (<18°C or >28°C).
Operating conditions include an ambient temperature range of -10 to 50°C (14 to 122°F) and humidity between 10 to 90%RH. Storage limits are defined as -40 to 60°C (-40 to 140°F) with storage humidity from 10 to 75%RH. The device samples at a rate of 1 time per second.
Configuration Options
The HH374 Series is offered as a handheld unit with the following documented capabilities and configurations:
• Sensor Inputs: Four channels for Type K thermocouples; standard accessories include two K Type Bead Probes.
• Data Storage & Display: Backlit LCD display capable of storing up to 16,000 records. Indicators on the display show battery capacity (MIN MAX AVG), minimum/maximum values, average value, auto power-off status, recording activity, and memory full conditions.
• Power Supply: Operates on a 9V Battery with an approximate lifetime of 80 hours using alkaline batteries. An optional AC adapter is available (9 VDC, max 8-10VDC).
• Data Interface: USB connector for PC interface; compatible with Windows software.
• Housing & Dimensions: Overall dimensions are 197mm(L) x 65mm(W) x 36mm(H); weight is approximately 285g. Includes a carrying case as standard accessory.
Key Product Differences
The series includes the HH374 model, which serves as the primary handheld configuration for Type K thermocouple data logging. The unit features an auto power-off function to conserve battery life and provides a "Data Hold" indication (H) on the display.
| Additional Features 1 | MIN/MAX/AVG/REL/HOLD Functions , Auto Power-Off |
| Data Interface | USB |
| Display Type | LCD |
| Display Type Note | 3 1/2 digit LCD |
| Height | 36 mm |
| Input Protection Voltage | 60Vdc/24Vrms |
| Length | 196 mm |
| Measurement Type | Temperature |
| Number of Measurements | 4 |
| Operating Temperature, Max | 50 °C |
| Operating Temperature, Min | 0 °C |
| Samples,Max | 16000 |
| Series ID | HH374-Series |
| Software Compatibility | Compatable with Windows NT 4.0/NT2000/XP/Vista/Windows 7 |
| Storage Temperature, Max | 60 °C |
| Storage Temperature, Min | -20 °C |
| Storage Temperature Note | 20 to 60ºC (-4 to 140ºF) (<70% RH) |
| Temperature Accuracy | ± 0.7 °C |
| Temperature Accuracy Note | -200 to 1370ºC (-328 to 2498ºF) ± 0.1% rdg + 0.7ºC (± 0.1% rdg + 1.4ºF) |
| Temperature Measurement, Max | 1370 °C |
| Temperature Measurement, Min | -200 °C |
| Temperature Resolution | ± 0.1 °C |
| Temperature Sensor Type | Thermocouple |
| Weight | 285 g |
| Width | 65 mm |