BS 3166:1959

This standard BS 3166:1959 Specification for thermographs (liquid-filled and vapour pressure types) for use within the temperature range -20°F to 220°F ( -30°C to 105°C) is classified in these ICS categories:

• 17.200.20 Temperature-measuring instruments

This British Standard relates to thermographs of the liquid-filled and vapour pressure types, suitable for general and marine use in the measurement of temperatures within the range – 20 °F to 220 °F (– 30 °C to 105 °C).

The instrument comprises a single or twin-pen recorder with one or two capillary tubes and bulbs respectively. When one bulb is used as a wet bulb, a container for distilled water is provided. A louvred screen may be used to house the bulbs, but the screen is not specified in this British Standard.

Design, construction, use, limits of accuracy.