소개
The Metrel MD 9040 is a True RMS (TRMS) industrial digital multimeter designed for demanding applications in the industrial sector. It features a CAT IV / 1000 V overvoltage category rating, ensuring safety and reliability for measurements on power supply sources. This device offers high accuracy, a 2-line LCD display, and various measurement functions for versatile use.
그림 1: The Metrel MD 9040 TRMS Industrial Digital Multimeter, showcasin견고한 디자인과 선명한 디스플레이가 특징입니다.
주요 특징
The MD 9040 incorporates several features designed for precision and user convenience:
- TRMS: Provides accurate readings for both sinusoidal and non-sinusoidal AC signals.
- Lead Alert: An audible and visual warning system for incorrect test lead connections, enhancing safety.
- 자동 범위 지정: Automatically selects the appropriate measurement range, with an option to switch to manual ranging.
- Relative Zero Mode: Allows for comparison of signal differences or removal of background noise by setting a reference point.
- 데이터 보유 : Freezes the current measurement on the display for convenient recording.
- PC 링크: Enables connection to a personal computer for data logging and analysis using optional software and interface.
- 안전: Rated CAT IV / 1000 V for high-level overvoltage protection, suitable for industrial environments.
- 표시하다: Features a large, bright 4-digit, 9999 counts dual LCD display for clear readability.
그림 2: 오버view highlighting the key features, measuring functions, and typical applications of the MD 9040 multimeter.
설정
배터리 설치
The MD 9040 is powered by a 9V battery. To install or replace the battery, locate the battery compartment on the rear of the device. Open the compartment, insert the 9V battery ensuring correct polarity, and then securely close the cover. Always replace the battery when the low battery indicator appears on the display to maintain measurement accuracy.
테스트 리드 연결
Connect the test leads to the appropriate input jacks on the multimeter's front panel. The device features a lead alert system to indicate incorrect connections, enhancing user safety. Refer to the following guidelines:
- 을 위한 권tage, resistance, capacitance, diode, and continuity measurements, connect the red test lead to the VΩHz 잭 앤 블랙 테스트는 다음으로 이어집니다. 코. 잭.
- 을 위한 current measurements (mA µA), connect the red test lead to the mA µA 잭 앤 블랙 테스트는 다음으로 이어집니다. 코. 잭.
- 을 위한 high current measurements (up to 10A), connect the red test lead to the 10A 잭 앤 블랙 테스트는 다음으로 이어집니다. 코. 잭.
그림 3: 클로즈업 view of the MD 9040's front panel, showing the rotary switch, display, and input jacks for test lead connections.
작동 지침
전원 켜기/끄기
To power on the MD 9040, rotate the central function switch from the 끄다 position to the desired measurement function. To power off the device, rotate the switch back to the 끄다 위치.
측정 기능
The MD 9040 offers a comprehensive range of measurement capabilities:
- 권tage (AC/DC): 선택하다 V~ AC 볼륨tag또는 V- DC 용tag측정.
- 전류(AC/DC): 선택하다 A~ for AC current or A- for DC current measurements. Ensure the test leads are connected to the appropriate current input jacks (mA µA or 10A).
- 저항(Ω): 선택하세요 오메가 position for resistance measurements.
- 정전용량(F): 선택하세요 F position for capacitance measurements.
- 다이오드 테스트: Select the diode symbol for testing diodes.
- 연속성 테스트: Select the continuity symbol for checking circuit continuity, indicated by an audible tone.
- 주파수(Hz): 선택하세요 Hz position for frequency measurements.
Auto-Ranging and Manual Ranging
The multimeter defaults to auto-ranging, which automatically selects the most suitable measurement range. To switch to manual ranging, press the RANGE button. In manual ranging, press RANGE repeatedly to cycle through available ranges. To return to auto-ranging, press and hold the RANGE 단추.
상대적 제로 모드
를 누르세요 렐 button to activate relative zero mode. This function subtracts the current displayed reading from all subsequent measurements, which is useful for comparing values or nulling out background noise. Press 렐 다시 눌러 이 모드를 종료합니다.
데이터 보류
를 누르세요 잡고 있다 button to freeze the current reading on the display. This allows for convenient recording of measurements. Press 잡고 있다 again to release the display and resume live readings.
유지
배터리 교체
When the low battery indicator appears on the display, replace the 9V battery promptly to ensure continued accurate operation. Refer to the 'Setup' section for detailed battery installation instructions.
청소
To clean the multimeter casing, 부드러운 것을 사용하세요, damp cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the device. Ensure the multimeter is powered off and disconnected from any electrical circuits before cleaning.
저장
Store the MD 9040 in a dry, cool environment, away from direct sunlight, extreme temperatures, and high humidity. If the device will not be used for an extended period, it is recommended to remove the battery to prevent potential leakage and damage.
문제 해결
This section addresses common issues you might encounter with your MD 9040 multimeter.
- 디스플레이/전원 없음: Check the battery charge level and ensure the 9V battery is correctly installed with proper polarity.
- 부정확한 판독: Verify that the correct measurement function is selected on the rotary switch. Ensure test leads are properly connected to the correct input jacks and that the battery is not low.
- Lead Alert Warning: If the lead alert activates, recheck all test lead connections to ensure they are inserted into the appropriate input jacks for the selected measurement function.
- 디스플레이에 "OL"(과부하)이 표시됩니다. This indicates that the measured value exceeds the currently selected range. Switch to a higher measurement range or ensure the input signal is within the device's specified limits.
기술 사양
The Metrel MD 9040 TRMS Industrial Digital Multimeter adheres to the following technical specifications:
| 기능 | 범위 | 정확성 |
|---|---|---|
| AC 볼륨tage (40 Hz - 20 kHz) | 60.00mV - 999.9V | ±(0.5% of reading + 3 digits) to ±(3.0% of reading + 4 digits) |
| DC 볼륨tage | 60.00mV - 999.9V | ±(0.06% of reading + 2 digits) to ±(0.1% of reading + 2 digits) |
| 직류 전류 | 600.0 µA - 10.00 A | ±(판독값의 0.2% + 4자리) |
| TRMS AC 전류 | 600.0 µA - 10.00 A | from ±(0.6% of reading + 3 digits) to ±(1.0% of reading + 3 digits) |
| 다이오드 테스트 | 2.000V(XNUMXV) | ±(1.0% of reading + 1 digit) |
| 저항 | 600.0 Ω - 60.00 MΩ | from ±(0.1% of reading + 3 digits) to ±(1.0% of reading + 5 digits) |
| 주전원 주파수 | 15.00Hz - 50.00Hz | ±(판독값의 0.04% + 4자리) |
| Frequency of digital equipment | 5.00Hz - 1.000MHz | ±(판독값의 0.004% + 4자리) |
| 정전 용량 | 60.00 nF - 29.99 mF | from ±(1.0% of reading + 5 digits) to ±(5.0% of reading + 5 digits) |
- 전원: 9V Battery (NEDA1604C, JIS006P, or IEC6F22)
- 오버볼tage 카테고리: CAT IV / 1000V
- 치수: 207 x 96 x 55mm
- 무게: 635g
그림 4: Detailed technical specifications table for the Metrel MD 9040, including functions, ranges, and accuracy.
보증 및 지원
보증 정보
The Metrel MD 9040 TRMS Industrial Digital Multimeter is covered by a 2-year (24-month) manufacturer's warranty from the date of purchase. Please retain your original purchase receipt as proof of purchase for any warranty claims. The warranty covers defects in materials and workmanship under normal use.
고객 지원
For technical assistance, service, or further information regarding your MD 9040 multimeter, please contact Metrel customer support. You can find contact details and additional resources on the official Metrel website. When contacting support, please have your product model and serial number available.
