TQC 針腳，SS，每個5/16“×24”，（需要4個） - 當土壤框沒買時，與SR-2連用

該型號SR-2是一個非常準確的電阻儀用數字顯示。 按鈕操作，容易改變的范圍，使操作簡單。 使用在野外或實驗室用大頭針或土壤框。

產品特點： 

即讀數字表

按下按鈕操作 

耐候性/影響情況 

量程范圍內輕松調整 - 0.1歐姆~3兆歐

該儀器可用于與任何兩（2）或四（4）針，它們以相等的距離被設置在土壤里成一條直線上。 該引腳被命名為C1，P1，P2和C2。 電壓是C1和C2之間驅動，而阻力降P1和P2（4針法）之間測得的。 在兩針法，電阻壓降測量C1和C2之間。 引腳之間的距離是相等的土壤阻力的深度。

四（4）針法已被標準化為ASTM標準G 57-95（a）和該方法是在NACE國際得到認可。

The Model SR-2 is a very accurate resistance meter with a digital display. Push button operation and easy to change ranges make operation simple. Use in the field or lab with pins or soil boxes.

Features:

Digital meter readout

Push button operation

Weather/Impact resistant case

Easily move between ranges - 0.1 Ohm to over 

3 MegOhms

The instrument may be used with either two (2) or four (4) pins, which are set into soil in a straight line, at equal distances. The Pins are named C1, P1, P2 and C2. Voltages are driven between C1 and C2, while resistance drop is measured between P1 and P2 (4 pin method). In the two pin method, the resistance drop is measured between C1 and C2 only. The distance between the pins is equal to the depth of the soil resistance.

The four (4) pin method has been standardized by ASTM as Standard G 57-95(a) and this method is also described in NACE Internationals。