1. Продукт бүтүп калдыview
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.
Негизги өзгөчөлүктөрү:
- 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. Пакеттин мазмуну
Таңгактан чыгаргандан кийин, төмөндө көрсөтүлгөн нерселердин бардыгы бар экенин жана жакшы абалда экендигин текшериңиз:
- 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 Ташуу сумкасы
- 1 х Колдонуучунун колдонмосу (бул документ)

Image 2.1: The tachometer and its various contact probes and carrying bag.
3. Аппараттын компоненттери
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.
- Contact Rotate Head: The rotating shaft where different contact probes are attached for measurement.
- LCD дисплей: Shows measurement readings, units, and stored values.
- Эстутум баскычы (MEM): Used to access stored MAX, MIN, and LAST values.
- Measure MAX/MIN Value Button: Toggles between displaying maximum and minimum recorded speeds.
- Switch/Null Button (ON/NULL): Powers the device on/off and can be used to clear readings or reset.
- Unit Button (UNIT): Changes the measurement unit (e.g., RPM, m/min, ft/min).
4. Техникалык шарттар
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.
| Параметр | Нарк |
|---|---|
| Өлчөө диапазону | 0.5-19999 RPM, 0.05-19999.9 m/min, 0.2-6560 Ft/min |
| Резолюция катышы | 0.1 RPM, 1 RPM, 0.01 m/min, 0.1 m/min, 1 Ft/min |
| Measure Error | ±(0.05%+1 digit) |
| Sampling Frequency | 0.8 сек |
| Measure Method | Байланыш |
| Иштөө температурасы | 0~50°C |
| Сактоо температурасы | -20~70°C |
| Күч | 3 * 1.5V AAA battery (Not included) |
| Салмагы | 132г |
| Өлчөмдөрү (L x W x Y) | 155мм x 55мм x 35мм (6.1 x 2.2 x 1.4 дюйм) |
| Материал | Акрилонитрил бутадиен стирол (ABS) |
5. Батареяны орнотуу
The AR925 Digital Contact Tachometer requires three (3) AAA batteries (not included) for operation. Follow these steps to install the batteries:
- Locate the battery compartment cover on the back of the tachometer.
- Батарея бөлүмүнүн капкагын ачуу үчүн ылдый же сыртка жылдырыңыз.
- Бөлүмдүн ичинде көрсөтүлгөндөй, туура полярдуулукту (+ жана -) текшерип, үч (3) AAA батарейкасын салыңыз.
- Батарея бөлүкчөсүнүн капкагын бекем чыккыча ордуна жылдырыңыз.

Сүрөт 5.1: View of the open battery compartment, showing where to insert AAA batteries.
6. Операция
This section details how to use your Jectse AR925 Digital Contact Tachometer for various measurements.
6.1 Күйгүзүү/өчүрүү
- Аппаратты күйгүзүү үчүн басыңыз ON/NULL баскычы.
- 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.

Сүрөт 6.1: Бүттүview of the multi-sensor probes included with the tachometer.
6.3 Өлчөөлөрдү алуу
- Ensure the correct contact probe is attached.
- басыңыз ON/NULL button to power on the tachometer.
- 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.
- The LCD display will show the real-time measurement.
- To change the measurement unit (RPM, m/min, ft/min), press the UNIT баскычы.

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 булар:
- Өлчөө жүргүзгөндөн кийин, баскычын басыңыз MEM баскычы.
- ар бир басуу 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").
Video 6.3: A demonstration of the Jectse Digital Contact Tachometer in operation, showcasing its features and measurement capabilities.
7. Техникалык тейлөө
Proper maintenance ensures the longevity and accuracy of your tachometer.
- Тазалоо: Аппаратты жумшак, кургак чүпүрөк менен сүртүңүз. Абразивдүү тазалагычтарды же эриткичтерди колдонбоңуз.
- Сактагыч: 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.
- Пробка кам көрүү: 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. Кыйынчылыктарды
If you encounter issues with your tachometer, refer to the following common problems and solutions:
| Көйгөй | Мүмкүн себеп | Чечим |
|---|---|---|
| Түзмөк күйбөйт. | Өлүк же туура эмес орнотулган батарейкалар. | Батареянын полярдуулугун текшериңиз. Жаңы AAA батарейкалары менен алмаштырыңыз. |
| Туура эмес же дал келбеген окуулар. | Loose contact with the rotating object; damaged probe; low battery. | Ensure firm and stable contact. Inspect and replace the probe if damaged. Replace batteries. |
| Display shows '0' or no change during measurement. | No contact or insufficient rotation. | Verify the object is rotating. Ensure the probe is making proper contact with the rotating surface. |
| Rubber tips on probes melt or deform. | Жогорку температуранын таасири. | Avoid using the tachometer on surfaces exceeding the probe's temperature resistance. Consider alternative measurement methods for high-temperature applications. |
9. Кепилдик жана колдоо
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 webсайт. Сатып алуу квитанциясын кепилдик дооматтары үчүн сатып алуунун далили катары сактаңыз.