# Преобразователь (передатчик) — GDT-20

> Для плотности, температуры и давления газа SF 6 с выходом Modbus ®

- Код каталога: gdt_20
- Модель: GDT-20
- Категория: Решения для газа SF6 › Gas density sensors
- Страница товара: https://avigan.com.ua/wika/ru/products/gdt_20
- Цена: по запросу
- Поставщик: AVIGAN (ООО «ВИКА Прилад»), официальный партнёр WIKA в Украине

## Описание

Модель GDT-20 Трансмиттер ✓Для плотности, температуры и давления газа SF6, с выходом Modbus® ✓Высокое качество ►К информации!

## Применение

- Permanent monitoring of the relevant gas condition parameters in closed tanks
- For internal and external SF 6 -insulated equipment

## Особенности

- High-accuracy sensor technology
- Modbus ® output protocol via RS-485 interface
- Ingress protection IP65
- Very good long-term stability and EMC characteristics
- Compact dimensions

## Технические характеристики

| Параметр | Значение |
|---|---|
| model | GDT-20 |
| product family | GDT |
| short description | Transmitter for gas density, temperature and pressure of SF6 gas with Modbus output |
| subcategory | Transmitter |
| certifications | EAC; CRN; China RoHS; EMC directive |
| ambient temp | -40 … 80 °C |
| ip rating | IP65 |
| weight kg | 0.4 |
| languages in datasheet | en |
| pressure ranges | 0 … 16 bar; 0 … 16 bar abs.; 0 … 16 barabs. |
| density referenced to C | 20 |
| accuracy class | ±0.6 %, ±0.35 g/litre |
| process connections | G ½" B, male thread; G½" B, male thread; G 1/2" B, male thread |
| wetted parts material | Stainless steel |
| output signal | Modbus RTU via RS-485 |
| has temperature compensation | true |

## Таблицы из даташита

### Accuracy specifications

| Accuracy | The specifications only valid for pure SF 6 gas |
|---|---|
| Density | ±0.6 %, ±0.35 g/litre at -40 ...+80 °C [-40 ...+176 °F] |
| Temperature | ±1 K |
| Pressure | -40 ...< 0 °C [-40 ...+32 °F] ±0.2 %, ±32 mbar |
|  | 0 ... 80 °C [32 ... 176 °F] ±0.06 %, ±10 mbar |
| Refresh rate |  |
| Density | 20 ms |
| Temperature | 20 ms |
| Pressure | 20 ms |
| Long-term stability at reference conditions |  |
| Temperature | ≤ ±0.1 %of span/year |
| Pressure | ≤ ±0.05 %of span/year |

### Measuring ranges

| Density | 0 ... 60 g/litre (8.87 bar abs. at 20 °C [68 °F]) |
|---|---|
| Temperature | -40 ...+80 °C [-40 ...+176 °F] |
| Pressure | 0 ... 16 bar abs. |
| Burst pressure | 52 bar abs. |
| Overpressure limit | Up to 30 bar abs. |
| Pressure reference | Absolute |
| Unit | Measured values with alternative units can be retrieved directly in the Modbus  registers |
| Density | g/litre, kg/m³ |
| Temperature | °C, °F, K |
| Pressure | mbar, Pa, kPa, MPa, psi, N/cm², bar (at 20 °C [68 °F]) |

### Process connection

| Thread | G½ " B, male thread |
|---|---|
| Material | Stainless steel |
| Transmission fluid | Synthetic oil |

### Output signal

| Voltage supply U B | DC 17 ...30V |
|---|---|
| Power consumption | Max.0.5W |

### Electrical connection

| Connection type | ■ Circular connector M12 x 1 (5-pin) ■ Modbus  RTU via RS-485 interface |
|---|---|
| Modbus  functionality | ■ Mixture ratio of SF 6 to N 2 or CF 4 (factory setting:100%SF 6 gas) ■ Customer-specific sensor name |

### Material

| Process connection | Stainless steel |
|---|---|
| Case | Stainless steel |

### Operating conditions

| 1 | 2 | 3 |
|---|---|---|
| Permissible temperature ranges |  |  |
| Standard | Operation | -40 ...+80 °C [-40 ...+176 °F] |
| Storage | -40 ...+80 °C [-40 ...+176 °F] |  |
| Option | Operation | -60 ...+80 °C [-76 ...+176 °F] |
| Storage | -60 ...+80 °C [-76 ...+176 °F] |  |
| Permissible air humidity | ≤ 90 %r.h. (non-condensing) |  |
| Ingress protection IP (IP code) per IEC 60529 | IP65, only when plugged in and using mating connectors with the corresponding ingress protection |  |
| Electrical safety | Protected against reverse polarity, protected against overvoltage |  |
| EMC tests | Immunity per IEC 61000-4-3 | 30 V/m (80 MHz ... 2.7 GHz) |
| Burst per IEC 61000-4-4 | 4 kV |  |
| Surge immunity per IEC 61000-4-5 | 2 kV conductor to ground, 1 kV conductor to conductor |  |
| ESD per IEC 61000-4-2 | 8 kV/15 kV, contact/air |  |
| High-frequency fields per IEC 61000-4-6 | 10V |  |

| Logo | Description | Country |
|---|---|---|
|  | EAC | Eurasian Economic Community |
| - | CRN Safety (e.g. electr. safety, overpressure, ...) | Canada |

| Logo | Description |
|---|---|
| - | China RoHS directive |

| Designation | Order number |
|---|---|
| Modbus ® startup kit for configuration, consisting of: ■ Power supply unit for transmitter ■ Cable with M12 x 1 connector ■ Interface converter (RS-485 to USB) ■ USB cable type A to type B ■ Modbus ® tool software on USB stick | 14075896 |

## Документация

- [ds_sp6009_en_co_5835a0](https://avigan.com.ua/wika/docs/wika/ds_sp6009_en_co.pdf) — PDF, 253 KB, en