1. Inleiding
The ESI 590 Pro Automotive Digital Multimeter (DMM) is a versatile tool designed for automotive diagnostic applications. It offers a wide range of testing capabilities, including specialized functions for automotive systems such as Ms Pulse Width for fuel injector on-time and RPM measurements. This DMM features auto-ranging for ease of use and a large, backlit LCD display for clear readings in various lighting conditions.
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your ESI 590 Pro DMM. Please read it thoroughly before using the device.
2. Veiligheidsinformatie
WARNING: To avoid electric shock or personal injury, and to prevent damage to the meter or the equipment under test, adhere to the following safety guidelines:
- Always ensure the test leads are in good condition, free from cracks or damaged insulation.
- Breng niet meer aan dan de aangegeven hoeveelheidtage, zoals aangegeven op de meter, tussen de aansluitklemmen of tussen een aansluitpunt en aarde.
- Wees voorzichtig bij het werken met voltages boven 30V AC RMS, 42V piek of 60V DC. Deze voltagZe vormen een gevaar voor elektrische schokken.
- Before measuring current, ensure the meter's fuses are intact and correctly rated.
- Schakel de stroomtoevoer naar het circuit uit en ontlaad alle hoogspanningsbatterijen.tage condensatoren voordat u weerstand, continuïteit, diodes of capaciteit test.
- Do not operate the meter with the case open or if the battery cover is not securely closed.
- Vervang de batterij zodra het batterij-indicatielampje gaat branden om nauwkeurige metingen te garanderen.
- Gebruik altijd de juiste functie en het juiste bereik voor metingen.
3. Product voorbijview
3.1 Componenten
The ESI 590 Pro DMM features a robust design with a large digital display, a central rotary function switch, and multiple input jacks for various measurements.

Afbeelding 1: Voorkant view of the ESI 590 Pro Automotive Digital Multimeter. The device features a prominent digital LCD screen at the top, a central rotary switch for selecting measurement functions, and three input jacks at the bottom for test leads. Buttons for various functions like DC/AC, Hz/%, REL, and HOLD are located above the rotary switch. The meter is housed in a red protective casing.
3.2 Meegeleverde accessoires
Your ESI 590 Pro DMM package includes:
- Two sets of test leads
- RPM pick-up (inductive)
- Temperatuursonde
- 9-volt batterij
- Draagtas
4. Instellen
4.1 Batterij installatie
- Zorg ervoor dat de meter UIT staat.
- Zoek het batterijvakje aan de achterkant van de meter.
- Remove the screw(s) securing the battery cover and lift the cover off.
- Connect a new 9-volt battery to the battery clips, observing correct polarity.
- Plaats de batterij in het compartiment en sluit het deksel weer af, waarna u het vastdraait met de schroef/schroeven.
4.2 Testkabels aansluiten
- Voor de meeste voltage, resistance, and temperature measurements, insert the black test lead into the COM (common) jack and the red test lead into the VΩHz krik.
- Voor stroommetingen tot 400 mA, steek de rode meetsnoer in de mA krik.
- For high current measurements up to 20A, insert the red test lead into the 20A krik.
- Zorg ervoor dat alle verbindingen stevig en veilig zijn.
5. Gebruiksaanwijzing
5.1 Algemene werking
- Aan/uit: Rotate the function switch from OFF to any desired measurement function to turn the meter on. Rotate back to OFF to power off. The meter also features an Auto Power Off function to conserve battery life.
- Automatisch bereik: The ESI 590 Pro is an auto-ranging DMM, meaning it automatically selects the appropriate measurement range. This simplifies operation, but some measurements may take a moment to stabilize.
- Achtergrondverlichting: Press the backlight button (often integrated with the HOLD button or a separate button) to illuminate the display for better visibility in low-light conditions.
- Gegevensopslag: Druk op de UITSTEL Druk op de knop om de huidige waarde op het display vast te zetten. Druk er nogmaals op om de weergave te ontgrendelen.
- Relative Change Function (REL): Druk op de REL button to store the current reading as a reference value. Subsequent readings will be displayed as the difference from this reference. Press again to exit relative mode.
5.2 Meetfuncties
Select the desired function by rotating the central switch.
- Deeltage (V DC/AC): Connect leads as described in Section 4.2. Select the V DC or V AC position on the rotary switch. The meter will auto-range.
- Current (A DC/AC, mA DC/AC): Connect leads to the appropriate current jacks (mA or 20A) and select the corresponding current function on the rotary switch. Ensure the meter is connected in series with the circuit.
- Weerstand (Ω): Connect leads to COM and VΩHz. Select the Ω function. Ensure the circuit is de-energized before measuring resistance.
- Capaciteit (CAP): Connect leads to COM and VΩHz. Select the CAP function. Discharge capacitors before testing.
- Frequentie (Hz) / Duty Cycle (%): Connect leads to COM and VΩHz. Select the Hz/% function.
- Temperatuur (°C/°F): Connect the temperature probe to the appropriate jacks (usually COM and VΩHz, or dedicated temperature jacks if present). Select the °C or °F function.
- RPM (omwentelingen per minuut): Use the inductive RPM pick-up. Connect it to the designated RPM input. Select the RPM function. The inductive pick-up features a five-position adjustable sensitivity switch for optimal signal detection.
- Ms Pulse Width: This function is specifically designed to measure the on-time of fuel injectors. Connect the meter according to the specific instructions for pulse width measurement (refer to advanced automotive diagnostics guides if needed). Select the Ms-PULSE function.
- Uitweiden: Select the DWELL function to measure the dwell angle in ignition systems.
6. Onderhoud
6.1 Reinigen
Veeg de behuizing van de meter schoon met adamp cloth and a mild detergent. Do not use abrasives or solvents. Keep the display clean and free from scratches.
6.2 Batterij vervangen
When the low battery indicator appears on the display, replace the 9-volt battery as described in Section 4.1. Prompt battery replacement ensures continued accuracy and proper operation.
6.3 Zekering vervangen
The ESI 590 Pro DMM is protected by internal fuses for current measurement ranges. If the meter fails to read current, the fuse may be blown. Refer to the meter's internal markings for fuse specifications (e.g., 20A fused, 400mA fused) and replace with fuses of identical type and rating. Fuse replacement typically involves opening the meter's back casing, similar to battery replacement, but may require additional steps. Consult a qualified technician if unsure.
6.4 Opslag
When not in use for extended periods, store the meter in its carrying case in a cool, dry environment. Remove the battery if storing for several months to prevent leakage.
7. Probleemoplossing
- Meter gaat niet aan: Controleer de batterijinstallatie en zorg ervoor dat de batterij voldoende is opgeladen. Vervang de batterij indien nodig.
- Onnauwkeurige of onstabiele metingen:
- Zorg ervoor dat de testkabels goed zijn aangesloten en goed contact maken.
- Controleer of de juiste functie en het juiste bereik zijn geselecteerd.
- Check for external electrical interference.
- Allow the auto-ranging function sufficient time to stabilize, especially for initial readings.
- Op het display verschijnt 'OL' (Overload): This indicates the measured value exceeds the selected range. For auto-ranging meters, it means the value is beyond the meter's maximum capability for that function. Ensure the meter is connected correctly and the value is within the meter's specifications.
- Geen actuele meting: Check the fuses as described in Section 6.3. Ensure the test leads are connected to the correct current input jacks (mA or 20A) and the meter is in series with the circuit.
- Tachometer not working correctly: Ensure the inductive RPM pick-up is properly connected and positioned. Adjust the five-position sensitivity switch on the pick-up to optimize signal detection. Verify the engine is running and producing a consistent signal.
8. Specificaties
| Specificatie | Detail |
|---|---|
| Merk | ES |
| Model | 590 |
| Energiebron | 9 Volts (Battery Powered) |
| Artikelgewicht | 2.4 pond |
| Productafmetingen (L x B x H) | 10.7 x 7.1 x 3.4 inch |
| Number of Test Ranges | 48 |
| Number of Test Functions | 15 |
| UPC | 855174001236 |
| Fabrikant | ELEKTRONISCHE SPECIALITEITEN |
9. Garantie en ondersteuning
For warranty information and technical support regarding your ESI 590 Pro Automotive Digital Multimeter, please refer to the documentation included with your purchase or contact ELECTRONIC SPECIALTIES directly. Contact details can typically be found on the manufacturer's official webwebsite of op de productverpakking.