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Sperry instrument DM-350A Operating Instruction

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11/02
OPERATING INSTRUCTIONS
MODELS DM-350A, 360A, 370A

DIGITAL MULTIMETER

PLEASE READ THESE OPERATING
INSTRUCTIONS CAREFULLY
Misuse and or abuse of these instruments cannot be prevented by
any printed word and may cause injury and or equipment damage.
Please follow all these instructions and measurement procedures
faithfully and adhere to all standard industry safety rules and
practices.
Form #312
2150 Joshua's Path, Suite 302
Hauppauge, NY 11788
Phone:800-645-5398
www.sperryinstruments.com
WARRANTY RETURN
Refer to Section "Return for Repairs" for complete
instructions. All warranty returns must include a legible
copy or original of the sales receipt clearly identifying the
model number, serial number and date of purchase.
Sec. 1 DESCRIPTION
These DMMs offer a powerhouse of measurement
capability in a small self-contained housing. It is
designed for the professional at work in the field or in the
laboratory, yet simple enough to operate making it
perfect for the hobbyist too.
Safety was a prime consideration in the design of this
DMM. Housed in shock resistant ABS plastic, this
instrument stands up to the use and abuse of everyday
service, and electrically insulates the user from potential
shock hazards. Electronic overload protection against
accidental application of voltage to resistance and

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Summary of Contents for Sperry instrument DM-350A

  • Page 1: Digital Multimeter

    11/02 Form #312 OPERATING INSTRUCTIONS MODELS DM-350A, 360A, 370A DIGITAL MULTIMETER PLEASE READ THESE OPERATING INSTRUCTIONS CAREFULLY Misuse and or abuse of these instruments cannot be prevented by any printed word and may cause injury and or equipment damage. Please follow all these instructions and measurement procedures faithfully and adhere to all standard industry safety rules and practices.

  • Page 2: Specifications

    Sampling Rate: 3 times per second. 25 Range, 7 Function 20 Range, 7 Function 17 Range Operating Environment: 0° to 50°C (32° to 122°F), Function DM-370A DM-350A DM-360A Max RH 80% to 31°C decreasing linear to 50% RH Range 200mV/2/20/ 200mV/2/20/ 200mV/2/20/ at 40°C.
  • Page 3 AC Voltage Instant Continuity 25 Range, 7 Function 20 Range, 7 Function 17 Range For the DM-370A and DM-360A models only. Function DM-370A DM-350A DM-360A Diode Test Range 2/20/200/600V 200/600V 200/600V 25 Range, 7 Function 20 Range, 7 Function 17 Range, Basic 1.5%...

  • Page 4: Battery Replacement

    Sec. 5.1 UNPACKING AND CONTENTS CHECK by referring to sec. 3 Specifications where the ranges The DM-350A comes complete and ready to use. Check are all listed. Refer to the Range and Resolution the following contents list when unpacking. If any pieces columns to compute the decimal point location.

  • Page 5: Fuse Replacement

    damage, contamination (excessive dirt, grease, etc.) and 1. Disconnect the test leads from any energized circuit defects. Examine the test leads for cracked or frayed and then from the instrument. insulation and make sure the lead plugs fit snugly into the instrument jacks.

  • Page 6: Current Measurements

    500V measured to the diode juction to be tested and reading the voltage ground. drop across the diode. Models DM-350A, DM-370A 3. Completely de-energize the circuit in which the CAUTION current is to be measured. Place the DMM in series...

This manual is also suitable for:

Dm-360aDm-370a

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