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阴极防护/腐蚀控制

首页 > 工程物探测绘-地球物理探测 >  阴极防护/腐蚀控制 > 腐蚀控制与阴极保护仪器 > 防腐层检测仪 > 防腐漏点定位仪


防腐漏点定位仪
防腐漏点定位仪
订货号：MM-80765-00

400-000-1836
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产地：美国
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产品描述：

The Pearson-Type Detector is well known to industry. Tinker & Rasor's Pearson-Type Detector, Model PD, is an all transistor instrument. Its light weight, low battery drain and rugged construction are features that make it highly productive tool. The PD Detector can be used to locate discon minuities in the coating of buried pipelines, to locate electrical contacts on the lines and to effectively locate the lines themselves. All of these findings can take place without the necessity of uncovering the pipeline under test.
A Pearson-type detector can be used successfully only if a pipeline has been carefully backfilled and the soil is compact around it. There also must be some moisture content in the surrounding soil. Cleats are worn by two inspectors walking in tandem. The cleats are terminated by cable connections to a receiver worn on the belt of one inspector. They enable him to accurately find holidays or large discontinuities in pipe coatings. The search coil can locate the pipe or any shorts.,
 
Mark IV Receiver
The New Mark IV Receiver employs a high gain, integrated circuit amplifier that is signal-to-noise optimized by three 750 Hz active filter elements. Modern circuit design insures maximum circuit stability even when operated at ambient temperature extremes. The filter attenuates AC and DC interference. The search coil is contained within the receiver and has low impedance of 2,000 ohms. Although earphones are furnished for operator's optional use, the loudspeaker offers advantages related to safety, convenience, and comfort. Built-in battery test and signal intensity meter of modern full-face design for ease of observation. Multi-directional depth level gauge for accurate (within 1 inch) depth determination.
  
PD-B Oscillator
The oscillator provided with the set has been designed to use the latest developments in this type of instrumentation. A signal of 750 Hz is generated by using a power transistor switching circuit. This arrangement eliminates troublesome vibrators, buzzers or other moving part elements. The transistor oscillator converts low voltage (12 V) DC to stable audio frequency AC directly. By a highly efficient method, the input current to the oscillator is only 1.7 amperes for a full output of fifteen watts, a conversion efficiency of better than 80%.
In order that a maximum of energy can be transferred from the oscillator to the pipe, the output of the oscillator is provided with taps so that voltages of 2.5, 5, 7.5, 15, 50 and 100 Volts are available to match the load. An interrupter is provided to make the signal more easily recognized.
 
Components of PD Short Locator
A. Mark IV Receiver with batteries (1 spare)
B. PD-B Oscillator
C. Head set with cushions
D. Battery cables (set): black for -, red for +
E. 30' black ground cable
F. 6' red oscillator-to-pipe cable
G. Carrying case
X. Instruction manual (not shown)
Optional Accessories for Locating Holidays
H. Shoe cleats (set of 4)
I. Terminal board (single connect)
J. Terminal Board (double connect)
K. 30' connecting cable
L. Cleat Cables (set of 4)
Mechanical
Dimensions (L x W x H): 18-1/4" x 12-1/4''x 9-1/4" (46 x 31 x 23.5 cm).
Shipping weights:
PD Short Locator 22 lbs (10 kg)
PD Detector complete 28 lbs. (13 kg)
Export weight approximate 55 lbs (25 kg)



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