מָבוֹא
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.
איור 1: The Metrel MD 9040 TRMS Industrial Digital Multimeter, showcasinהעיצוב החזק והתצוגה הברורה שלו.
תכונות מפתח
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.
- טווח אוטומטי: 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.
- החזקת נתונים: Freezes the current measurement on the display for convenient recording.
- קישור למחשב: Enables connection to a personal computer for data logging and analysis using optional software and interface.
- בְּטִיחוּת: Rated CAT IV / 1000 V for high-level overvoltage protection, suitable for industrial environments.
- לְהַצִיג: Features a large, bright 4-digit, 9999 counts dual LCD display for clear readability.
איור 2: מעלview highlighting the key features, measuring functions, and typical applications of the MD 9040 multimeter.
הגדרה
התקנת סוללה
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.
חיבור עופרת בדיקה
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:
- עֲבוּר כרךtage, resistance, capacitance, diode, and continuity measurements, connect the red test lead to the VΩHz מוביל הבדיקה של ג'ק והשחור אל COM ג'ֵק.
- עֲבוּר current measurements (mA µA), connect the red test lead to the mA µA מוביל הבדיקה של ג'ק והשחור אל COM ג'ֵק.
- עֲבוּר high current measurements (up to 10A), connect the red test lead to the 10A מוביל הבדיקה של ג'ק והשחור אל COM ג'ֵק.
איור 3: תקריב view of the MD 9040's front panel, showing the rotary switch, display, and input jacks for test lead connections.
הוראות הפעלה
הפעלה/כיבוי
To power on the MD 9040, rotate the central function switch from the כבוי position to the desired measurement function. To power off the device, rotate the switch back to the כבוי מַצָב.
פונקציות מדידה
The MD 9040 offers a comprehensive range of measurement capabilities:
- כרך ידtage (AC/DC): לִבחוֹר V~ עבור AC voltagה או V- עבור DC כרךtage מדידות.
- זרם (AC/DC): לִבחוֹר A~ עבור זרם חילופין או A- for DC current measurements. Ensure the test leads are connected to the appropriate current input jacks (mA µA or 10A).
- התנגדות (Ω): בחר את Ω position for resistance measurements.
- קיבול (F): בחר את F position for capacitance measurements.
- בדיקת דיודה: Select the diode symbol for testing diodes.
- מבחן המשכיות: Select the continuity symbol for checking circuit continuity, indicated by an audible tone.
- תדר (הרץ): בחר את 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 טווח button. In manual ranging, press טווח repeatedly to cycle through available ranges. To return to auto-ranging, press and hold the טווח לַחְצָן.
מצב אפס יחסי
הקש על REL 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 REL שוב כדי לצאת ממצב זה.
החזקת נתונים
הקש על לְהַחזִיק button to freeze the current reading on the display. This allows for convenient recording of measurements. Press לְהַחזִיק again to release the display and resume live readings.
תַחזוּקָה
החלפת סוללה
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.
ניקוי
To clean the multimeter casinז, השתמש בבד רך, דamp 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.
אִחסוּן
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.
פתרון בעיות
This section addresses common issues you might encounter with your MD 9040 multimeter.
- אין תצוגה/כוח: Check the battery charge level and ensure the 9V battery is correctly installed with proper polarity.
- קריאות לא מדויקות: 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.
- התצוגה מציגה "OL" (עומס יתר): 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.
מפרט טכני
The Metrel MD 9040 TRMS Industrial Digital Multimeter adheres to the following technical specifications:
| פוּנקצִיָה | לָנוּעַ | דִיוּק |
|---|---|---|
| AC כרךtage (40 Hz - 20 kHz) | 60.00 mV - 999.9 V | ±(0.5% of reading + 3 digits) to ±(3.0% of reading + 4 digits) |
| DC כרךtage | 60.00 mV - 999.9 V | ±(0.06% of reading + 2 digits) to ±(0.1% of reading + 2 digits) |
| זרם DC | 600.0 µA - 10.00 A | ± (0.2% מהקריאה + 4 ספרות) |
| זרם AC AC TRMS | 600.0 µA - 10.00 A | from ±(0.6% of reading + 3 digits) to ±(1.0% of reading + 3 digits) |
| בדיקת דיודה | 2.000 וולט | ±(1.0% of reading + 1 digit) |
| הִתנַגְדוּת | 600.0 Ω - 60.00 MΩ | from ±(0.1% of reading + 3 digits) to ±(1.0% of reading + 5 digits) |
| תדר רשת | 15.00 הרץ - 50.00 הרץ | ± (0.04% מהקריאה + 4 ספרות) |
| Frequency of digital equipment | 5.00 הרץ - 1.000 מגהרץ | ± (0.004% מהקריאה + 4 ספרות) |
| קיבול | 60.00 nF - 29.99 mF | from ±(1.0% of reading + 5 digits) to ±(5.0% of reading + 5 digits) |
- מקור כוח: 9V Battery (NEDA1604C, JIS006P, or IEC6F22)
- Overvoltage קטגוריה: קטגוריה IV / 1000V
- מידות: 207 x 96 x 55 מ"מ
- מִשׁקָל: 635 גרם
איור 4: Detailed technical specifications table for the Metrel MD 9040, including functions, ranges, and accuracy.
אחריות ותמיכה
מידע על אחריות
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.
תמיכת לקוחות
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.
