From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Letter from Cambridge Instrument Company discussing methods for measuring radiator water temperature.
| Identifier | ExFiles\Box 175\4\ img121 | |
| Date | 14th March 1931 | |
| 83987 TELEGRAMS: INSTRUMENT. CAMBRIDGE. CODES: A.B.C. (5TH AND 6TH EDITIONS). WESTERN UNION; BENTLEY'S. TELEPHONE: CAMBRIDGE NO. 615. CAMBRIDGE INSTRUMENT COMPANY, LIMITED. HEAD OFFICE AND SHOWROOMS: 45, GROSVENOR PLACE, LONDON. S.W.1. WORKS: LONDON AND CAMBRIDGE. REGD. TRADE MARK. MANUFACTURERS OF MECHANICAL & ELECTRICAL INSTRUMENTS OF PRECISION. YOUR REF. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}/KT. Expl. Dept. RECEIVED CAMBRIDGE, ENGLAND. IN REPLY PLEASE QUOTE JLC/FB 14th March 1931. Messrs Rolls-Royce, Ltd., DERBY. [Stamp: RECEIVED 16 MAR 1931] Dear Sirs, In reply to yours of the 13th, we thank you for your enquiry for an outfit to measure the temperature of the water inlet and outlet on your radiators, and for the blue prints submitted for our criticism. While we think the method you suggest might be a possible one, we anticipate trouble with the short-circuiting effect of the water between the turns of the nickel wire, unless you are able to insulate this wire in a really effective manner. We suggest that the results you wish to obtain could probably be secured more simply by other means, and should therefore much welcome the opportunity of discussing the matter with the member of your staff interested. In the last year or so we have developed a new form of Quick Acting Resistance Thermometer, which we feel certain would be of interest to you, as it represents a very great advance on methods previously available for measuring the temperatures both of air and of liquid for steam and all lower temperatures. | ||