SATO SK-RHG (7450-00) nhiệt ẩm kế kiểu Assmann (0 ~50°C/±0.2°C)

SATO Keiryoki; Japan

Assmann Psychrometer, Mercury Type

Model: SK-RHG ( No. 7450-00)

The Sato Keiryoki SK-RHG (7450-00) Assmann-type aspirated psychrometer is available in several configurations, primarily distinguished by their measurement range and the type of liquid used in the thermometers.

• Dual Thermometer Method: It contains two identical thermometers—one "dry bulb" (ambient temperature) and one "wet bulb" (covered by a moistened cloth).
• Aspirated Ventilation: A built-in fan draws air over the thermometers at a constant speed (3–5 m/s), ensuring consistent evaporation and more accurate readings than "sling" psychrometers, which must be manually swung.
• Mercury and Alcohol Options: Available in mercury-filled versions for high precision or alcohol-filled versions for environmental protection (mercury-free).
• Reliability: It uses Sprung’s formula to convert the temperature difference between the two bulbs into a relative humidity percentage

Assmann psychrometer: a user-friendly and reliable choice Among the aspirated psychrometers, mercury thermometer type is the most popular one. This type consists of glass tube thermometers filled with mercury and a ventilator to offer a stable wind to the sensing part of the thermometers. Easy to carry and install, free from complicated maintenance, capable of stable and reliable measurement for a long period of time—Assmann psychrometer is the ultimate choice for those who need to measure humidity.

Specifications

Cat. No.: 7450-00 / Model name: SK-RHG Product name: Assmann Psychrometer, Mercury Type, 0 to 50°C Measuring range: 0 to 50°C Accuracy: ±0.2°C (0 to 30°C), ±0.3°C (other) Minimum scale: 0.2°C Airflow speed: 3 to 5 m/s Dimensions :80 (W) x 450 (H) x 110 (D) mm Weight :740 g including batteries Power: D battery x2 or attached AC adapter Standard accessories: D zinc-carbon battery x2, AC adapter x1, wick for wet bulb x20, water supply bottle x1, dustproof cover x1, humidity conversion rule x1, carrying case x1, test result, instruction manual

• Meteorological Observations: Used for official weather monitoring to determine precise ambient conditions.
• Calibration Standard: Because of its high reproducibility and stability, it is frequently used as a master tool to check or calibrate other electronic humidity sensors.
• Controlled Environments: Used in laboratories, semiconductor factories, and pharmaceutical warehouses where exact humidity control is critical for preserving specimens or protecting equipment

Optional Accessories: