1. پیژندنه
This manual provides comprehensive instructions for the safe and effective operation, setup, and maintenance of the Dwyer 477B-3 Handheld Digital Manometer. The 477B-3 is designed for precise measurement of air pressure, offering high accuracy and internal memory for data storage.
2. د خوندیتوب معلومات
د ټپي کیدو مخنیوي او وسیلې ته د زیان رسولو څخه مخنیوي لپاره تل لاندې خوندیتوب احتیاطي تدابیر په پام کې ونیسئ:
- Do not exceed the specified pressure range of the device.
- Ensure proper connection of pressure tubing to avoid leaks or incorrect readings.
- Do not expose the manometer to extreme temperatures, humidity, or corrosive environments.
- Use only the specified battery type for replacement.
- وسیله پاک وساتئ او له کثافاتو څخه پاک وساتئ.
3. محصول ختم شوview
The Dwyer 477B-3 is a robust handheld digital manometer encased in an aluminum housing. It features a clear digital display and intuitive button controls for various functions.
3.1 مخکښ پینل

شکل 1: مخکی view of the Dwyer 477B-3 Digital Manometer, showing the digital display and control buttons.
په مخکینۍ تخته کې شامل دي:
- ډیجیټل ډیزاین: Shows pressure readings and operational indicators.
- د فعال / بند تڼۍ: وسیله چالان یا بندوي.
- ZERO/STORE Button: Zeros the reading or stores data in memory.
- HOLD/MEMORY Button: Holds the current reading or accesses stored data.
- UNITS/LOC Button: Changes measurement units or navigates memory locations.
3.2 شاته پینل

شکل 2: شاته view of the Dwyer 477B-3 Digital Manometer, displaying key operating instructions and specifications.
The back panel provides quick reference operating instructions and device specifications. It also houses the pressure ports at the top and the battery compartment at the bottom.
4. ترتیب کول
4.1 د بیټرۍ نصب کول

شکل 3: View of the battery compartment on the Dwyer 477B-3 Digital Manometer.
- Locate the battery compartment cover on the bottom rear of the manometer.
- Unscrew the retaining screws at the base of the instrument to remove the battery cover.
- Insert a 9V battery (e.g., DURACELL MN 1604, EVEREADY 522, or equivalent), observing correct polarity.
- د بیټرۍ پوښ بدل کړئ او د پیچونو سره یې خوندي کړئ.
4.2 ابتدايي پاور آن
د بیټرۍ نصبولو وروسته، فشار ورکړئ آن/بند button to power on the device. The display will illuminate, indicating the device is ready for use.
5. عملیاتي لارښوونې
5.1 ON/OFF Function
- فشار ورکړئ آن/بند button to toggle the device on and off.
- The device will automatically shut off after 20 minutes of inactivity to conserve battery life.
- To illuminate the display during power-on, hold the آن/بند تڼۍ
۵.۲.۵ صفر فعالیت
- Vent both pressure ports to the atmosphere.
- فشار ورکړئ او ونیسئ ZERO/STORE button until the LCD displays "----", then release it. The manometer is now zeroed.
5.3 UNITS/LOC Function
- فشار ورکړئ UNITS/LOC د سایکل چلولو لپاره تڼۍ کلیک وکړئ او د مطلوب اندازه کولو واحدونه غوره کړئ.
5.4 HOLD/MEMORY Function
- لوستل ودروئ: فشار ورکړئ HOLD/MEMORY button to hold the current reading on the display. Press it again to resume measurement.
- د حافظې دنده:
- To store a reading, press and hold HOLD/MEMORY until "ST01" (or next available location) is displayed, then press ZERO/STORE. If needed, press UNITS/LOC to select another storage location before pressing ZERO/STORE.
- ته view stored data, press and hold HOLD/MEMORY until "LOC" is displayed. If needed, press UNITS/LOC ته view other memory locations.
- To exit memory mode, press HOLD/MEMORY بیا
- To clear all data, press and hold HOLD/MEMORY until "CLR" is displayed, then press ZERO/STORE.
۸۰۰۷۹۲ دAMPING Function
- فشار ورکړئ او ونیسئ HOLD/MEMORY until "DAMP" is displayed, then release the HOLD/MEMORY تڼۍ
- مطبوعاتي ZERO/STORE or UNITS/LOC to adjust the damping level from 1 to 8 (default is 3).
- To exit dampد ing mode، پریس HOLD/MEMORY بیا
6. ساتنه
6.1 پاکول
د مانومیټر بهرنۍ برخه په نرم، d سره پاک کړئamp cloth. Do not use abrasive cleaners or solvents, as these may damage the housing or display.
6.2 د بیټرۍ بدلول
When the "LOW BAT" indicator appears on the display, replace the 9V battery as described in Section 4.1. Prompt battery replacement ensures continued accurate operation.
7. ستونزه حل کول
| ستونزه | احتمالي لامل | د حل لاره |
|---|---|---|
| وسیله فعاله نه ده. | مړ یا په غلط ډول نصب شوی بیټرۍ. | Replace battery, ensuring correct polarity. |
| ناسم یا بدلون موندونکي لوستل. | Manometer not zeroed; pressure leaks; unstable pressure source. | Perform ZERO function; check all tubing connections for leaks; ensure stable pressure source. |
| "LOW BAT" indicator displayed. | بیټرۍ ټیټه ده. | د 9V بیټرۍ ځای په ځای کړئ. |
8. مشخصات
- ماډل: 477B-3
- سلسله: 0 to 200" wc (0 to 49.82 kPa)
- دقت: ±0.1٪ FS
- د کور جوړونې مواد: المونیم
- حافظه: 40 لوستل
- د بریښنا سرچینه: 9V battery (DURACELL MN 1604, EVEREADY 522, or equivalent)
- جوړونکی: ډویر
- UPC: 782568954475
9. تضمین او ملاتړ
Specific warranty information for the Dwyer 477B-3 Digital Manometer is not provided in the product data. Please refer to the official Dwyer website or contact your authorized dealer for detailed warranty terms and conditions.
For technical support or service inquiries, please contact Dwyer Instruments, Inc. directly or consult their official documentation.





