Traffic Counter Recorder

1994/012

SYX-RRL TYPE 4A traffic counter recorder

SKU: 1994/012 Categories: ,

Description

SYX-RRL TYPE 4A traffic counter recorder: an electro-mechanical counter with a rubber pneumatic tube detector connected to a sensitive diaphragm air switch which is closed for a short period of time by pulses of air pressure and an electromagnet is energised. In turn each pulse displaces an armature whose motion is registered by a 5 digit tumbler display (“Elmeg” counter unit) in half unit intervals per pulse. The counter is powered by two 6 volt dry batteries. The counter is powered by two 6 volt dry batteries.

This counter was purchased (c.1963) by the City Engineer’s Department of Edinburgh Corporation and was used to count traffic at a number of locations in the city and possibly elsewhere in Lothian Region. This type of counter was not fitted with a clock so the readings on the display had to be manually timed to make sense of the recorded value. They were, therefore, only used for long-term and ad hoc counts where hour-by-hour data were not required.

Additional information

Acquisition Number

1994/012

Item Type

Short Description

SYX-RRL TYPE 4A traffic counter recorder

Manufactured by

Date of Manufacture

c. 1963

Sub-items

None

Supporting Items

None

Makers Number

1154

Marks

None

Dimensions (mm)

183 x 180 x 125 (H)

Donor

Date Donated

November 1994

Materials

Steel

Condition

Fair

Display Location