Monroe-electronics Resistivity Meter - Surface - model 262A Manuel d'utilisateur télécharger pdf (Page 5)

BATTERY OPERATION:

Model 262A-1 was designed to operate continuously for 4 to 8 hours on its internal battery

when fully charged. An LED on the panel indicates LOW BATTERY when the battery

needs recharging. The charger furnished with the unit will renew full charge within 14

hours.

The instrument may be operated with the charger connected; however, if erroneous

readings are suspected, the charger should be removed.

MODEL 262A-1 SHOULD BE SHUT OFF WHEN NOT IN USE.

CONFIDENCE CHECK:

A quick test for proper operation of the Model 262A-1 in the resistivity (OHMS/SQUARE)

mode is as follows:

1. Stand the instrument on its end so that the panel is facing you and the contact rails

protrude away from you.

2. Be sure that the function selector switch is in the OHMS/SQUARE position and that the

grounding lead is not connected to the GND jack.

3. Switch power on. If the LOW BATTERY LED flashes more than once or twice, the

battery requires charging.

4. The rightmost (10

) LED should light after a few seconds and remain on.

5. Switch power off. Bend the leads of a two megohm, ±5% resistor into a "U" shape and

wedge this between the metal electrode rails so that each lead makes contact with one

of the rails and the resistor stays in place. Switch power on. The LED labeled "10

should light.

To test the grounding lead and the basic operation of the resistance (OHMS) test mode:

1. Shut power off and remove resistor installed above.

2. Stand the instrument on end(as above), set the function switch to "OHMS" and apply

power. Within a few seconds, the 10

LED should light and remain on.

3. Insert the small banana plug of the grounding lead into the jack marked "GND". Hold

the other end of the lead by the insulated portion only. (Remember this leads has

100V applied to it!!!)

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Monroe-electronics Resistivity Meter - Surface - model 262A Manuel d'utilisateur Page 5