Time Electronics 1067 Precision Resistance Box - Manual (Page 3)

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V1.1 P a g e | 3 1067 Technical Manual
2.
Operation
The Time Electronics 1067 precision decade resistance box is suitable for a wide range of
simulation work. It is particularly suitable for simulating and calibrating precision Pt100
sensors and temperature indicators/meters that use resistive sensors.
Special care has been taken in the construction of the 1067 to ensure that the residual end
resistance is as low and as stable as possible. Multiple self- wiping silver alloy contacts are
used for each position to ensure outstanding performance and long life.
Housed in a robust metal case the 1067 is fully screened and low thermal emf terminals are
used. The switch dials have clear markings and in an easy to read in-line format.
Each decade is scaled from 0 to 11 and therefore allows convenient overlap of the set
values. The maximum value settable is 12,222.21 ohms.
Resistance is selected by dialing the value required using the rotary switches. This enables
precise setting with a clear unambiguous indication.
For example - to select 3k83:
• set the 1kΩ bank to 3
• the 100Ω bank to 8
• and the 10Ω bank to 3
The 1067 has low thermal 4mm binding posts allowing connection
via 4mm banana plugs, spades, or bare wires. Two connections red
and black connect to the resistance and the green terminal connects
to the case for screening purposes.
Note: Remember that all resistance boxes have a residual resistance, i.e. when the dials
are set to zero a small resistance remains. If you are making precision measurements or
recalibrating the instrument, this residual value must be subtracted from all measurements.