Hoyt MW38 Instruction Manual
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Hoyt MW38 Instruction Manual

Digital milliohm meter
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DIGITAL MILLIOHM METER
INSTRUCTION MANUAL

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Summary of Contents for Hoyt MW38

  • Page 1 DIGITAL MILLIOHM METER INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    INDEX PAGE 1. INTRODUCTION......2. SAFETY NOTES......3. FEATURES........4. SPECIFICATIONS......5. GENERAL........6. INSTRUMENT LAYOUT....7. MEASUREMENT......8-12 8. MAINTENANCE......9. FUSE REPLACEMENT....

  • Page 3: Introduction

    1. INTRODUCTION NOTE This meter has been designed and tested According to CE Safety Requirements for Electronic Measuring Apparatus, IEC / EN 61010-1 and other safety standards. Follow all warnings to ensure safe operation. WARNING READ "SAFETY NOTES" (NEXT PAGE) BEFORE USING THE METER.

  • Page 4: Safety Notes

    2. SAFETY NOTES ● Read the following safety information carefully Before attempting to operate or service the meter. ● Use the meter only as specified in this manual. Otherwise, the protection provided by the meter may be impaired. ● Rated environmental conditions : (1) Indoor Use.

  • Page 5: Features

    3. FEATURES ● Protection class: IP65 (Lid closed) ● 4-Wire method for mΩ measurement. ● Measures down to 100µΩ (0.1mΩ). ● Maximum resolution of 100µΩ. ● 4 Lines × 20 Characters large LCD. ● 200 measurement results can be saved in the memory and recalled on the display.

  • Page 6: Specifications

    4. SPECIFICATIONS 0~200.0mΩ in steps of 100uΩ 0~2000mΩ in steps of 1mΩ Measuring ranges 0~20.00Ω in steps of 10mΩ (mΩ) 0~200.0Ω in steps of 100mΩ 0~2000Ω in steps of 1Ω ±0.8% of reading ±4 digits over the operating temperature range, Accuracy 0°C ~ 40°C, with the supplied test leads...

  • Page 7: General

    5. GENERAL ● Protection fuse: 200mA/600V × 1 ● Low Battery Indication : " LoBAT " message appears on the right lower part of the display when the battery voltage drops below accurate operating level. ● Accessories : Instruction manual Test leads Shoulder belt Batteries...

  • Page 8: Instrument Layout

    6. INSTRUMENT LAYOUT ① ③ ④ ⑪ ⑫ ② CAT III 300V ⑥ ⑬ MAX / MIN 2000Ω ENTER / 200.0Ω SAVE 20.00Ω 2000mΩ DIGITAL HOLD 200.0mΩ MILLIOHM TEST/ ⑭ METER STOP ⑦ ⑧ ⑨ ⑩ ⑤ ● Test Leads...
  • Page 9 ① LCD: 4 Lines × 20 Characters large LCD ② ▲ Button ③ ▼ Button ④ SEL Button For 3 different functions: ⑴ Date / Time ADJ ⑵ Record display ⑶ Record clear ⑤ ESC Button ⑥ ENTER / SAVE Button ⑦...

  • Page 10: Measurement

    7. MEASUREMENT 1. Power On : Rotate the function switch to keep it from staying in the "OFF" position. The system will be auto off when it has no operation after 3 minutes. 2. Before testing, you must make sure that the resistance under test does not have any voltage.
  • Page 11 3. Select scale range : There are 5 scale range "200.0mΩ", "2000mΩ", "20.00Ω" , "200.0Ω" and "2000Ω" could be selected by rotating the function switch. 2000Ω scale uses the 1mA to test. 200.0Ω & 20.00Ω scales use the 10mA to test. 2000mΩ...
  • Page 12 5. Record saving function When the measurement is finished, press "SAVE/ ENTER" button to save the result of measurement. At the same time, the last line will display the number of record. The memory can record up to 200 records. 6.
  • Page 13 ● Date / Time ADJ Press "ESC/SEL" button to leave the Date/Time ADJ. Press "UP" or "DOWN" button to set the correct number. Press "TEST/STOP" button to switch to the next unit of date or time, and go on the required adjustment.
  • Page 14 ● RECORD DISPLAY Press "UP" or "DOWN" button to reach the record that you want to look up. Press "ESC/SEL" button to return back to the minor function menu. ● RECORD CLEAR Press "SAVE/ENTER" button to clear all records in the memory. Press "ESC/SEL"...

  • Page 15: Maintenance

    8. MAINTENANCE Battery replacement : When " LoBAT " message appears on the right lower part of the display, change new batteries as follows : (1) Disconnect the test leads from the instrument and turn off the power. (2) Unscrew the battery cover and replace with new batteries(1.5V "C"...

  • Page 16: Fuse Replacement

    9. FUSE REPLACEMENT Open the meter case, replace with a new fuse which has the same specification 200mA/600V, 5×20mm. Fuse 200mA / 600V (5 × 20 mm) Due to our policy of constant improvement and development, we reserve the right to change specifications without notice. -14-...

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