Elapsed time meter: Difference between revisions

Revision as of 07:19, 16 June 2024

Some Tektronix instruments up to the late 1980s contained electrochemical elapsed time meters based on the Mercury coulometer principle.

In case of disposal, this component will need to be handled according to local regulations dealing with parts containing mercury.

Instruments known to contain mercury-based elapsed time meters are

2336YA
490-Series spectrum analyzers Located on the A70 Z-axis & RF interface board
5110 Mod.WP
7503 – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ. Located on rear of main interface board.
7904 SN B010100 -B079999 – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ. Located on rear of main interface board.
7L5 – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ. Located on rear of digital storage and averaging board. Shown as M4770 on p.217 of service manual and p.95 (7-17) in parts list.
...

Tek Component News No.105, May 1969 – Elapsed Time Indicator, TEK PN 149-0030-00

@@ Line 10: / Line 10: @@
 * [[5110|5110 Mod.WP]]
 * [[7503]] – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ.  Located on rear of main interface board.
+* [[7904]] SN B010100 -B079999 – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ.  Located on rear of main interface board.
 * [[7L5]]  – Curtis Indachron, Tek P/N 149-0030-00, run from +5 V via 3.9 MΩ.  Located on rear of digital storage and averaging board. Shown as M4770 on p.217 of service manual and p.95 (7-17) in parts list.
 * ...