Jectse AR925 Digital Contact Tachometer User Manual

1. Prodotto finitoview

The Jectse AR925 Digital Contact Tachometer is an instrument designed for precise measurement of rotating and linear rolling speeds. It utilizes advanced electro-optical technology to provide accurate readings across a wide range of applications. This device is equipped with a clear LCD display and features automatic storage of maximum, minimum, and last measured values for convenient data analysis.

Image 1.1: Jectse AR925 Digital Contact Tachometer in use, showing the display.

Caratteristiche principali:

• Utilizes MCU and electro-optical technology for efficient measurement of rotating and linear rolling speed.
• Wide measuring range of 0.5-19999 RPM with high resolution.
• Large LCD display for clear and easy-to-read measurements.
• Automatically stores the maximum (MAX), minimum (MIN), and last (LAST) measured values.
• Includes convertible accessories for various measurement applications.

2. Contenuto della confezione

Dopo aver disimballato, verificare che tutti gli articoli elencati di seguito siano presenti e in buone condizioni:

• 1 x Jectse AR925 Digital Contact Tachometer
• 1 x Linear Circular Probe
• 1 x Speed Column Probe
• 1 x Speed Large Cone Probe
• 1 x Speed Small Cone Probe
• 1 x Borsa per il trasporto
• 1 x Manuale utente (questo documento)

Image 2.1: The tachometer and its various contact probes and carrying bag.

3. Componenti del dispositivo

Familiarize yourself with the main components and controls of the AR925 Digital Contact Tachometer:

Image 3.1: Labeled diagram of the tachometer's front panel and contact head.

1. Contact Rotate Head: The rotating shaft where different contact probes are attached for measurement.
2. Schermo LCD: Shows measurement readings, units, and stored values.
3. Pulsante di memoria (MEM): Used to access stored MAX, MIN, and LAST values.
4. Measure MAX/MIN Value Button: Toggles between displaying maximum and minimum recorded speeds.
5. Switch/Null Button (ON/NULL): Powers the device on/off and can be used to clear readings or reset.
6. Pulsante Unità (UNITÀ): Changes the measurement unit (e.g., RPM, m/min, ft/min).

4. Specifiche

The following table outlines the technical specifications of the Jectse AR925 Digital Contact Tachometer:

Image 4.1: Visual representation of the tachometer's dimensions and key parameters.

5. Installazione della batteria

The AR925 Digital Contact Tachometer requires three (3) AAA batteries (not included) for operation. Follow these steps to install the batteries:

1. Individuare il coperchio del vano batteria sul retro del contagiri.
2. Per aprire il coperchio del vano batteria, farlo scorrere verso il basso o verso l'esterno.
3. Insert three (3) AAA batteries, ensuring correct polarity (+ and -) as indicated inside the compartment.
4. Richiudere il coperchio del vano batteria facendolo scorrere in posizione finché non scatta in posizione.

Immagine 5.1: View of the open battery compartment, showing where to insert AAA batteries.

6. Funzionamento

This section details how to use your Jectse AR925 Digital Contact Tachometer for various measurements.

6.1 Accensione/Spegnimento

• Per accendere il dispositivo, premere il pulsante ON/NULL pulsante.
• The device will automatically power off after approximately 30 seconds of inactivity to conserve battery life. There is no dedicated 'off' button.

6.2 Attaching Contact Probes

Select the appropriate contact head (Linear Circular, Speed Column, Speed Large Cone, or Speed Small Cone) based on the object to be measured. Gently push and twist the chosen probe onto the Contact Rotate Head until it is securely attached.

Immagine 6.1: Passoview of the multi-sensor probes included with the tachometer.

6.3 Esecuzione delle misurazioni

1. Ensure the correct contact probe is attached.
2. Premere il tasto ON/NULL button to power on the tachometer.
3. Gently press the rotating part of the contact probe against the center of the rotating shaft or surface of the object you wish to measure. Maintain steady contact.
4. The LCD display will show the real-time measurement.
5. To change the measurement unit (RPM, m/min, ft/min), press the UNITÀ pulsante.

Image 6.2: Step-by-step illustration of the contact measurement method.

6.4 Viewing Stored Values (MAX/MIN/LAST)

The tachometer automatically stores the maximum, minimum, and last measured values. To view questi:

• Dopo aver effettuato una misurazione, premere il tasto MEM pulsante.
• Ogni pressione del MEM button will cycle through the MAX, MIN, and LAST recorded values.
• The display will indicate which value is currently shown (e.g., "MAX", "MIN", "LAST").

7. Manutenzione

Proper maintenance ensures the longevity and accuracy of your tachometer.

• Pulizia: Pulire il dispositivo con un panno morbido e asciutto. Non utilizzare detergenti abrasivi o solventi.
• Magazzinaggio: When not in use for extended periods, remove the batteries to prevent leakage. Store the tachometer and its accessories in the provided carrying bag in a cool, dry place, away from direct sunlight and extreme temperatures.
• Cura della sonda: Inspect contact probes regularly for wear or damage. Replace if necessary to maintain measurement accuracy. Avoid exposing rubber tips to high temperatures, as they may melt.

8. Risoluzione Dei Problemi

If you encounter issues with your tachometer, refer to the following common problems and solutions:

9. Garanzia e supporto

Jectse products are designed for reliability and performance. For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official Jectse websito. Conservare la ricevuta d'acquisto come prova d'acquisto per eventuali reclami in garanzia.