M.C. MILLER SRM Test Box Bedienungsanleitung

MAN470 March 1, 2022

1

Updated March 1, 2022

SRM Text Box Instructions

It is tool to help the field technician diagnose problems encountered when

performing a soil resistivity survey by confirming the soil resistivity meter is

performing properly. By ruling out the meter as a source of an error, the

technician can then troubleshoot the external connections or associated cables to

determine the cause.

Note: All resistance values are ±1.0%

Connections to the 400A / 400D Soil Resistivity Meter (SRM):

Using known good test leads, connect from the resistivity meter to the test box as

follows: P1 to P1, P2 to P2, C1 to C1 and C2 to C2 as per Figure 1 below. This

simulates a Wenner 4 pin resistivity test.

Set the switch on the test box to the desired Ohms position and take a reading

with the SRM. The reading on the SRM should be very close to that indicated by

the test box setting. If a great difference is noted, the meter should be returned

to M. C. Miller Co. for repair and re-certification.

If a 2 pin test is desired, connect the meter’s P1 and P2 leads to P1 and P2

respectively to the test box and place jumper leads on the meter from P1 to C1

and P2 to C2 as per Figure 2 below.

MAN470 March 1, 2022

2

Updated March 1, 2022

In addition to the selectable ranges shown on the label, it is possible to simulate tests up to 30KΩ

byconnecting themeterP1,P2 leadstothetestboxC1, C2jacksandplacing jumpersonthe

meterterminalsbetweenC1,P1andasecond jumperleadbetweenP2 ,C2 asperFigure3

below.

With 0Ω selected on the test box a 2 wire test will be performed at 20KΩ and selecting 10K will

allow a 2 wire test at 30KΩ.

MAN470 March 1, 2022

3

Updated March 1, 2022

MAN470 March 1, 2022

4

Updated March 1, 2022

Notes:

Dieses Handbuch passt für folgende Modelle

1

Inhaltsverzeichnis

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M.C. MILLER

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