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Summary of Contents for Auto Meter DM-40
- Page 1 Auto Meter Products Inc. DM-40 T est Equipment Operator’s Manual Automotive Multimeter and Inductive Amp Probe The DM-40 is the auto industry’s answer to pocket portability in a profes- sionally accurate meter.
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Page 2: Table Of Contents
Battery Replacement --------------------------------------2 Battery Replacement --------------------------------------2 Safety ----------------------------------------------------------3 Safety ----------------------------------------------------------3 For service send your product to Auto Meter in a well-packed shipping carton. Please include a note explaining what the problem is along with Maintenance and Cleaning -------------------------------3 Maintenance and Cleaning -------------------------------3 your phone number. -
Page 3: Safety
SAFETY SPECIFICATIONS CONTINUED Indoor Use Carefully read all operating instructions before using the DM-40 Wear eye protection when working around batteries. Conductor Size: 23mm max. (approx.) Keep sparks, flames, or cigarettes away from batteries. Battery Type: Two 1.5V AA Keep hair, hands, and clothing as well as tester leads and cords Display: 3 3/4 LCD with 40 seg. -
Page 4: Features
FEATURES SPECIFICATIONS (23 Accurate AC/DC digital clamp meter for current measurement. DC Current: High resolution readout (10mA to 40A DC/AC range). Range Resolution Accuracy Overload Protection One touch zero for DC Amps adjustment. 10mA 1.0% 2dgts DC 400A 23 mm diameter jaw. Ideal for working under dash or in cable 0-150A 100mA 1.0% 2dgts... - Page 5 650A Data Hold Symbol appears on the LCD when the hold button is pressed. Select DC 200 Amp and zero the DM-40 by pressing the yellow Bar graph has forty segments. It displays segments proportional to button. the actual reading. Each segment represents one count.
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Page 6: Dc/Ac Current Measurements
Make sure the small arrow inside the clamp is pointing in the direction of the current towards the battery. Also make sure the DM-40 is clear of any moving belts, fan blades or anything that 1. Set the rotary switch at 40A~or 200A~. -
Page 7: Dc/Ac Voltage Measurements
Select DC 40 Amps on the DM-40. Read the measured value from the LCD display. Zero the DM-40 by pressing the yellow button. Clamp the DM-40 around the positive (+) battery cable . Make AC VOLTAGE sure it is clamped around all wires. -
Page 8: Resistance Measurement
FREQUENCY AND CONTINUITY TESTS RELATIVE READING MEASUREMENTS ZERO FREQUENCY (Hz) MEASUREMENT Set the rotary switch to Hz. The “ZERO” button also can be used to make a relative measurement. Insert the test leads into the input jacks. Once the button is pushed, the current reading is set to zero and a zero Connect the test probes in PARALLEL to the signal or circuit symbol will be displayed on LCD.
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