2768 Precision Wheatstone Bridge

Brand: Yokogawa Electric Corporation

Model 2768 is a Precision Bridge used for exact deter­mination of resistance in the 100 MilliOhms to 110 MegaOhms range with accuracy of 0.01 to 0.05%.

Since this instrument includes a high-sensitivity transistorized galvanometer and bridge power source, no auxiliary device is required.
Features
  • Superior resistor aliment
  • Minimized contact resistance
  • Guarding and shielding
    • Materials of high insulation resistance and low absorption are employed. Guard circuits are provided to insure stable operation even In highly humid atmospheres. The instrument is housed in a {grey} metal case to assure -to operator of excellent shielding.
  • Heat-insulated pushbutton keys
    • If the operator's body temperature were carried to the galvanometer sensitivity control keys, a temperature difference would arise at the contact point and produce thermal EMF resulting in measurement error. To eliminate this effect, the pushbutton keys for the galvanometer sensitivity control are heat-insulated with phenol resin.

Specifications

Accuracy

  • ± (0.02 % of Setting + 0.5 Milliohm)
  • ± 0.01 to ± 0.05 % of Setting

Battery Life

  • Approximately 300 Hours

Enclosure, Body Material

  • Grey Metal Case with Plastic feet & Carrying Handles

Input

  • 0.2 W - Max.

Insulation Resistance

  • 1,000 megaohms at 250 Vdc at Ambient Humidity of < 75 % between Electric Circuit & Case

Measuring Range

  • 0.10000 to 111.110 megaohms

Power

  • 1.5 / 3 / 6 / 15 V - Bridge

Power Requirement

  • Four 1.5 V Batteries (JIS R20P, ANSI D, Mono 1.5 V or Equivalent) - Bridge
  • Single 9 V Battery (JIS 6F22, ANSI 6F22, Energieblock 9 V or Equivalent) - Bridge

Resistance

  • 100 milliohms to 110 megaohms

Sensitivity

  • Maximum

Supply Voltage

  • 500 Vac for One Minute between Electric Circuit & Case - Dielectric Strength
show more