# مقياس تدفق الهواء — A2G-25

> للتهوية وتكييف الهواء

- رمز الكتالوج: a2g_25
- الطراز: A2G-25
- الفئة: قياس التدفق › Air flow sensors
- صفحة المنتج: https://avigan.com.ua/wika/ar/products/a2g_25
- السعر: عند الطلب
- المورد: AVIGAN (TOV VIKA Prylad)، الشريك الرسمي لشركة WIKA في أوكرانيا

## نظرة عامة

يُستخدم مقياس تدفق الهواء من الطراز A2G-25 لقياس تدفقات الهواء للوسائط الغازية في تطبيقات التهوية وتكييف الهواء.

## التطبيقات

- For measuring the air flows of radial ventilators
- For measuring air flows in ventilation pipes and ducts in conjunction with the model A2G-FM measuring probe
- Measurement of differential pressures

## المزايا

- With analogue output signal (0 … 10 V or 4 … 20 mA) or Modbus ® protocol
- Output signal for air flow and differential pressure in one instrument
- Simple and fast mounting and commissioning
- Maintenance-free
- Maximum operating pressure 20 kPa

## المواصفات الفنية

| المعيار | القيمة |
|---|---|
| model | A2G-25 |
| product family | A2G |
| short description | Air flow meter for ventilation and air-conditioning, measuring air flows up to 200,000 m³/h and differential pressures up to 7,000 Pa. |
| subcategory | differential pressure-based air flow meter |
| certifications | RoHS; WEEE; CE; EAC; GOST; KazInMetr; MTSCHS |
| ambient temp | -40 … 70 °C |
| ip rating | IP54 |
| weight kg | 0.15 |
| languages in datasheet | en; de |
| technology | variable_area |
| flow ranges | 0 … 1000 Pa; 0 … 2000 Pa; 0 … 5000 Pa; 0 … 7000 Pa; 0 … 2500 Pa |
| accuracy percent | 1 |
| process connections | Connecting nozzle (ABS), lower mount, for hoses with inner diameter 4 … 6 mm; Connecting nozzle (ABS), lower mount, for hoses 4…6mm with inner diameter; Connecting nozzle (ABS), lower mount, for hoses with inner diameter 4...6 mm |
| wetted parts material | ABS; PC |
| process temp | -20 … 50 °C |
| process pressure max bar | 0.2 |
| output signal | Modbus RTU; DC 0 … 10 V; 4 … 20 mA; DC 0…10 V; 4…20 mA; DC 0...10 V; 4...20 mA; Modbus® |
| power supply | AC 24 V or DC 24 V ±10 % |

## جداول ورقة البيانات

| Air flow meter, model A2G-25 | 2 | 3 |
|---|---|---|
| Measuring element | Piezo measuring cell |  |
| Measuring range |  |  |
| Analogue output signal (DC 0 …10V/4 …20mA) | ■ 0 ... 1,000 Pa 1) ■ 0 ... 2,000 Pa ■ 0 ... 5,000 Pa ■ 0 ... 7,000 Pa |  |
| Modbus ® version | ■ 0 ... 2,500 Pa ■ 0 ... 7,000 Pa |  |
| Accuracy 2) |  |  |
| Measuring ranges 0 …1,000, 0 …2,000, 0 …2,500 Pa | Pressure < 125 Pa Pressure > 125 Pa | 1 %±2Pa 1 %±1Pa |
| Measuring ranges 0 …5,000, 0 …7,000 Pa | Pressure < 125 Pa | 1.5 %±2Pa |
| Units (adjustable in the menu) |  |  |
| Air flow | ■ m 3 /h ■ m 3 /s ■ l/s ■ cfm |  |
| Differential pressure | ■ Pa ■ kPa ■ mbar ■ inWC ■ mmWC |  |
| Process connection | Connecting nozzle (ABS), lower mount, for hoses 4…6mm | with inner diameter |
| Supply voltage U B | AC 24V or DC 24V | ±10% |
| Electrical connection | Cable gland M16 Cover:PG Screw terminals | max.1.5mm 2 |
| Output signal |  |  |
| Voltage | V OUT P OUT Minimum load | DC0…10V DC0…10V 1 kΩ |
| Current | V OUT P OUT Minimum load | 4…20mA 4…20mA 500Ω |
| Modbus® | See page 3 |  |
| Current consumption |  |  |
| DC0…10V | < 1.0W |  |
| 4…20mA | < 1.2W |  |
| Modbus ® | < 1.3W |  |
| Case | Plastic (ABS) Cover: Polycarbonate | (PC) |
| Mounting | Wall mounting |  |
| Zero point setting | ■ Automatic 3) | button on the printed circuit board |
| Permissible temperatures |  |  |
| Medium | ■ -20 …+50 °C [-4 …+122 °F] ■ -5 …+50 °C [23 …122 °F], with automatic zero point setting |  |
| Ambient | -40 …+70 °C [-40 …+158 °F] |  |
| Ingress protection per IEC/EN 60529 | IP54 |  |
| Weight | 150 g |  |

| Logo | Description | Country |
|---|---|---|
|  | EU declaration of conformity ■ EMCdirective ■ RoHS directive ■ WEEE directive | European Union |
|  | EAC (option) ■ Import certificate ■ EMCdirective | Eurasian Economic Community |
|  | GOST (option) Metrology, measurement technology | Russia |
|  | KazInMetr (option) Metrology, measurement technology | Kazakhstan |
| - | MTSCHS (option) Permission for commissioning | Kazakhstan |

| Description | Order number |
|---|---|
| Measuring hoses |  |
| PVC hose, inner diameter 4 mm, roll at 25m | 40217841 |
| PVC hose, inner diameter 6 mm, roll at 25m | 40217850 |
| Silicone hose, inner diameter 4 mm, roll at 25m | 40208940 |
| Silicone hose, inner diameter 6 mm, roll at 25m | 40208958 |
| Duct connectors for measuringhosesØ4…6mm | 40217507 |
| Measuring probe for air flow measurement with pitot tube Model A2G-FM, see data sheet SP 69.10 | - |

## المستندات

- [ds_sp6904_en_co_70124b](https://avigan.com.ua/wika/docs/wika/ds_sp6904_en_co.pdf) — PDF, 1226 KB, en