Appendix B1

Appendix B(1)       Specifications  for Serial Nos. 001 through 032

 

 

 

·         Accuracy: 0.3 percent plus or minus 5 least significant digits

 

·         Switching frequency: 30 Hertz plus or minus 0.01 percent (optional 25 Hertz)

 

·         No mechanical relays

 

·         No nonpolarizing electrodes required for either resistivity or IP modes

 

·         Transmitter maximum compliance voltage: over 400 volts

 

·         Transmitter waveform: square wave with exact 50% duty cycle

 

·         Measurement range: selectable, 0 to 200 ohms or 0 to 20,000 ohms

 

·         Transmitter constant current choices: 0.50 milliamps or 5.0 milliamps 

 

·         Input resistance: 200 Megohms  (s/n 001-014: 20 Megohms)

 

·         Operating temperature range: -10 to +50 degrees Celsius (limited by LCD)

 

·         Storage temperature range: -20 to +75 degrees Celsius

 

·         Housing: water tight, high-impact plastic

 

·         Display device: 4.5 digit LCD Digital Panel Meter

 

·         Dimensions: 36.3 x 27.4 x 15.8 cm (14.3 x 10.8 x 6.2 inches)

 

·         Weight:    4.3 Kilos   (9.5 pounds)

 

·         Impact resistance: will sustain a drop of one meter to a concrete surface

 

·         Power source:  four “D” alkaline batteries

 

·         Readings per set of batteries at room temperature: 20KW range – 2,500 readings

                                                                                                    200W range – 1,250 readings

 

·         Typical resistance mode capability: Provides accurate Wenner Array resistivities with “a” spacings                   up to 200 or more feet.


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