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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
