2755 PRECISION WHEATSTONE BRIDGE
Model 2755 measures resistances from 1 Ω to 10 MΩ by operation of dials and switches. Batteries and a galvanometer are self-contained. The front control panel is provided with power and galvanometer circuit selectors, one ratio arm, and four measuring dials.
Model 2755 is also equipped with a Murray and Varley Loop Tester for convenient location of line faults such as "shorts" and "grounds" in power, telephone, telegraph, and signal cables.
|Dimensions||182 x 226 x 128 mm
7 1/4 x 9 x 4 3/4 in.
|Measuring Range||1.000Ω to 10.00MΩ|
|Measuring Arm||x 1mΩ, x 10Ω + 10Ω x 10 + 100Ω x 10 + 1000Ω x10 (min. one step: 1Ω)|
|Ratio Arms||x 0.001 x 0.01, x 0.01, x 0.1, x 1, x 10, 100, x 1000 (M10, M100, M1000 Murray & Varley loop testing)|
|Accuracy||Range, ±0.1% of reading on 100Ω to 100kΩ Range, ±0.3% of reading on 10Ω to 1MΩ Range, ±0.6% of reading on 1Ω to 10MΩ Range|
|Temperature Coefficient of Resistance Elements||±0.5 x 10-5 /°C at ambient temperature of 5 to 35°C (41 to 95°F), ±2 x 10-5 /°C at ambient temperature of 20 to 35°C (68 to 95°F)|
|Galvanometer (Built-In)||Sensitivity 0.9 μA/div, Internal Resistance - Approx. 150Ω, External Critical Damping resistance - Approx. 800Ω, Period - within 1.5 Seconds|
|Galvanometer Power Source||Three 1.5V batteries (built-in)|
|Operating Temperature Range||5 to 35°C (41 to 95°F)|
|Humidity Range||85% Max., Relative Humidity|
|Outer Case||ABS Resin|
|Current Rating||0.01A at x 10 (1000Ω)
0.1A at x 1 (100Ω)
0.3A at x 0.1 (10Ω)
10A at x 0.0001 (0.01Ω)
1A at x 0.01 (1Ω)
3A at x 0.001 (0.1Ω)
|Accessories Supplied at No Extra Cost||Carrying Case|
|Bulletin 2700-E||PRECISION MEASURING INSTRUMENTS||