# Датчик густини газу — GD-20

> Для густини газу, температури та тиску ізоляційних газів, із сигналом Modbus ® або аналоговим 4 ... 20 mA

- Код каталогу: gd_20
- Модель: GD-20
- Категорія: Рішення для газу SF6 › Gas density sensors
- Сторінка товару: https://avigan.com.ua/wika/uk/products/gd_20
- Ціна: за запитом
- Постачальник: AVIGAN (ТОВ «ВІКА Прилад»), офіційний партнер WIKA в Україні

## Опис

Постійний моніторинг Для запобігання системним помилкам у розподільчих пристроях і, таким чином, відключенням мережі, необхідний постійний моніторинг густини газу. ...

## Застосування

- Permanent monitoring of the relevant gas condition parameters in closed tanks
- For indoor and outdoor SF6 gas-insulated equipment
- Density measurement of alternative insulating gases in electrical equipment or in the laboratory

## Особливості

- High-accuracy sensing technology
- Digital Modbus ® RTU or analogue 4 ... 20 mA output signal
- IP67 ingress protection, optionally with IP6K9K field case
- Very good long-term stability and EMC characteristics
- Compact design

## Технічні характеристики

| Параметр | Значення |
|---|---|
| model | GD-20 |
| product family | GD |
| short description | Gas density sensor for SF6 and alternative insulating gases with Modbus® or 4...20 mA output |
| subcategory | Gas density sensor |
| certifications | CE; RoHS |
| ambient temp | -40 … 80 °C |
| ip rating | IP67 |
| pressure ranges | 0 … 2 bar; 0 … 3 bar; 0 … 6 bar; 0 … 8 bar; 0 … 10 bar; 0 … 12 bar; 0 … 16 bar |
| density referenced to C | 20 |
| accuracy class | ±1.25% (standard), ±0.75% (optional) depending on range and temperature |
| process connections | G 1/2 B; G 1/4 B; G 3/8 B JIS; 1/4 NPT; DN 6 female via adapter; DN 8 female via adapter; DN 20 female via adapter; Malmquist (M30 x 2) female via adapter; G 1/2 JIS; M20 x 1.5 |
| wetted parts material | Stainless steel 316L |
| output signal | Modbus® RTU; 4...20 mA |
| has temperature compensation | true |

## Таблиці з даташита

### Basic information

| Pressure reference | Absolute |
|---|---|
| Case |  |
| Material | Stainless steel 316L |
| Case options | ■ Field case ■ Cable outlet ■ Metal cable outlet, shield optionally connected (heavy-duty version) |

| Compensated pressure range in bar abs. [psi abs.] at 20 °C [68 °F] (g/l SF₆) | Pressure in bar abs. [psi abs.] | Temperature | Output parameters | Output signal |
|---|---|---|---|---|
| 0 …2[0 ... 29] (12.28) | 0 …2.4 [0 ... 34.81] | -40 …+80 °C [-40 ...+176 °F] | ■ Density ■ Pressure at 20 °C [68 °F] ■ Pressure ■ Temperature | Modbus ® RTU |
| 0 …3[0 ... 43.51] (18.65) | 0 …3.7 [0 ... 53.66] |  |  |  |
| 0 ... 6 [0 ... 87.02] (38.87) | 0 ... 7.5 [0 ... 108.78] |  |  |  |
| 0 …8[0 ... 116.03] (53.4) | 0 …10.1 [0 ... 146.49] |  |  |  |
| 0 …10[0 ... 145.04] (68.96) | 0 …12.9 [0 ... 187.10] |  |  |  |
| 0 …12[0 ... 174.05] (85.79) | 0 …15.7 [0 ... 227.71] |  |  |  |
| 0 …16[0 ... 232.06] (124.64) | 0 …21.3 [0 ... 308.93] |  |  |  |

### Accuracy specifications

| 1 | 2 | 3 |
|---|---|---|
| Accuracy 1) |  |  |
| Compensated pressure ranges in bar abs. [psi abs.] at 20 °C [68 °F] (g/l SF₆) 0 …2[0 ... 29] (12.28) 0 ... 6 [0 ... 87.02] (38.87) 0 …3[0 ... 43.51] (18.65) | For -40 ... -20 °C [-40 ... -4 °F] | ■ ±2 %(standard) ■ ±1.5 %(optional) |
| For -20 ...+80 °C [-4 ...+176 °F] | ■ ±1.25 %(standard) ■ ±0.75 %(optional) |  |
| Compensated pressure ranges in bar abs. [psi abs.] at 20 °C [68 °F] (g/l SF₆) 0 …8[0 ... 116.03] (53.4) 0 …10[0 ... 145.04] (68.96) 0 …12[0 ... 174.05] (85.79) 0 …16[0 ... 232.06] (124.64) | For -40 ...+80 °C [-40 ...+176 °F] | ■ ±1.25 %(standard) ■ ±0.6 %(optional) |
| Long-term stability at reference condi- tions | ±0.1 %per year for the density signal |  |
| Pressure accuracy | ■ ±1 %at 20 °C [68 °F] (standard) ■ ±0.2 %at 20 °C [68 °F] (optional) |  |
| Temperature accuracy | ±1.5 K |  |
| Reference conditions | Per IEC 61298-1 |  |

| Compensated pressure range in bar abs. [psi abs.] at 20 °C [68 °F] (g/l SF₆) | Accuracy 1) | Output parameters | Output signal |
|---|---|---|---|
| 0 …2[0 ... 29] (12.28) | ■ ±2 %(standard) ■ ±1.5 %(optional) | Absolute pressure at 20 °C [68 °F] | 4 ...20mA |
| 0 …3[0 ... 43.51] (18.65) |  |  |  |
| 0 ... 6 [0 ... 87.02] (38.87) |  |  |  |
| 0 …8[0 ... 116.03] (53.4) |  |  |  |
| 0 …10[0 ... 145.04] (68.96) |  |  |  |
| 0 …12[0 ... 174.05] (85.79) |  |  |  |
| 0 …16[0 ... 232.06] (124.64) |  |  |  |

| Density range in g/l SF 6 (compensated pressure in bar abs. [psi abs.] at 20 °C [68 °F]) | Accuracy 1) | Output parameters | Output signal |
|---|---|---|---|
| 0 …10[0 ... 145.04] (1.64) | ■ ±2 %(standard) | SF₆ gas density in g/l | 4 ...20mA |
| 0 …16[0 ... 232.06] (2.59) | ■ ±1.5 %(optional) |  |  |
| 0 ... 25 [0 ... 362.59] (3.97) |  |  |  |
| 0 …40[0 ... 580.15] (6.16) |  |  |  |
| 0 …60[0 ... 870.22] (8.87) |  |  |  |
| 0 …80[0 ... 1160.30] (11.33) |  |  |  |

| Compensated pressure range in bar abs. at 20 °C [68 °F] (g/l SF₆) | Overload safety in bar abs. | Burst pressure in bar abs. |
|---|---|---|
| 0 ... 2 (12.28) | 6.2 | 10 |
| 0 ... 3 (18.65) | 14.5 | 24 |
| 0 ... 6 (38.87) | 14.5 | 24 |
| 0 ... 8 (53.4) | 31 | 52 |
| 0 ... 10 (68.96) | 31 | 52 |
| 0 ... 12 (85.79) | 31 | 52 |
| 0 ... 16 (124.64) | 62 | 103 |

| Name in accordance with IUPAC 2) nomenclature | Abbreviation | Description (CAS no.) |
|---|---|---|
| Sulphur hexafluoride | SF 6 | 2551-62-4 |
| Nitrogen | N 2 | 7727-37-9 |
| Tetrafluoromethane | CF 4 | 75-73-0 |
| Oxygen 3) | O 2 | 7782-44-7 |
| Carbon dioxide | CO 2 | 124-38-9 |
| 2,3,3,3-Tetrafluoro-2-(trifluoromethyl)propanenitrile 4) | C4-FN (fluoronitrile) | 42532-60-5 |
| Helium | He | 7440-59-7 |
| Argon | Ar | 7440-37-1 |

### Output signal

| Voltage supply | DC10…30V |
|---|---|
| Power consumption |  |
| Model GD-20-A | ≤ 0.75W |
| Model GD-20-D | ≤ 0.45W |
| Maximum permissible load R A (model GD-20-A) | R A ≤ (U B - 9.5 V) / 0.023 A with R A in Ωand U B inV |
| Time response |  |
| Settling time 1) | < 10 ms |
| Switch-on time 2) | ≤ 500 ms |

### Process connection

| Thread size | ■ G1/2 B ■ G1/4 B ■ G3/8 B JIS ■ 1/4 NPT ■ DN 6 female via adapter ■ DN 8 female via adapter ■ DN 20 female via adapter ■ Malmquist (M30 x 2) female via adapter ■ G1/2 JIS ■ M20 x 1.5 |
|---|---|

### Electrical connection

| Digital version (model GD-20-D) | ■ Modbus ® -RTU via RS-485 interface ■ Circular connector M12 x 1 metal (5-pin) ■ Circular connector M12 x 1 plastic (5-pin) |
|---|---|
| Analogue version (model GD-20-A) | ■ Circular connector M12 x 1 metal (5-pin) ■ Circular connector M12 x 1 plastic (5-pin) |

### Operating conditions

| Shock resistance | 2 | 3 |
|---|---|---|
| Single shock loads | 500g (1.4 ms, 1 shock, 3 axes) |  |
| Continuous shock | 100g (4 ms, 10,000 shocks, 3 axes) |  |
| Ingress protection (IP code) 1) |  |  |
| M12 x 1 plastic | IP67, with mating connector |  |
| M12 x 1 metal | IP67 2) , with mating connector |  |
| Cable outlet plastic | IP67, with cable |  |
| Cable outlet metal | IP67, with cable |  |
| Field case | IP6K9K, with cable / blind plug |  |
| Electrical safety |  |  |
| Model GD-20-D | Reverse polarity voltage U + vs.U - | DC 30V 3) |
| Model GD-20-A | Reverse polarity voltage U + vs.U - | DC 40V |
| EMC tests |  |  |
| Immunity to EMF | 30 V/m (at 80 MHz to 6 GHz) |  |
| Surge immunity per IEC 61000-4-5 | 2 kV on instrument case (shield connected on both sides) 1 kV, non-symmetrical, lines to ground, RS-485-A to RS-485-B, U + vs.U - |  |
| ESD per IEC 61000-4-2 | 8 kV contact discharge, 15 kV indirect discharge, 8 kV indirect discharge |  |
| Immunity against conducted HF signals per IEC 61000-4-6 | 10V at 150 kHz to 80 MHz |  |
| Immunity against fast transients (burst) per IEC 61000-4-4 | 4 kV |  |

| Logo | Description | Country |
|---|---|---|
|  | EU declaration of conformity | European Union |

| Logo | Description | Country |
|---|---|---|
|  | UL 1) Safety (e.g. electr. safety, overpressure, ...) | USA and Canada |

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

| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|
| Designation | Case ingress protection | Temperature range in °C [°F] | Shield provided by customer | Shield connected on the instrument side | Assignment |  |
| U + | U - |  |  |  |  |  |
| Cable outlet2m [6.56 ft], plastic | IP67 | -40 ...+80 °C [-40 ...+176 °F] | Yes | - | Brown | Blue |
| Cable outlet5m [16.40 ft], plastic | Yes | - |  |  |  |  |
| Cable outlet 10m [32.80 ft], plastic | Yes | - |  |  |  |  |
| Cable outlet2m [6.56 ft], SS | Yes | - |  |  |  |  |
| Cable outlet5m [16.40 ft], SS | Yes | - |  |  |  |  |
| Cable outlet 10m [32.80 ft], SS | Yes | - |  |  |  |  |
| Cable outlet2m [6.56 ft], shield connect- ed, SS | Yes | Yes |  |  |  |  |
| Cable outlet5m [16.40 ft], shield con- nected, SS | Yes | Yes |  |  |  |  |
| Cable outlet 10m [32.80 ft], shield con- nected, SS | Yes | Yes |  |  |  |  |
| Field case | IP6K9K | - | - | 1 | 2 |  |

## Документація

- [ds_sp6077_en_co_645166](https://avigan.com.ua/wika/docs/wika/ds_sp6077_en_co.pdf) — PDF, 760 KB, en

## Конфігуратор

Товар має інтерактивний конфігуратор на сторінці товару.

```
GD-20- - -Z100ZZZZZZZZZZZZZZZZZZZZZ- -C
```