# Гібридний монітор густини газу з камерою порівняння — GDM-RC-100-T

> З інтерфейсом Modbus ® або аналоговим сигналом 4 ... 20 mA

- Код каталогу: gdm_rc_100_t
- Модель: GDM-RC-100-T
- Категорія: Рішення для газу SF6 › Gas density sensors
- Сторінка товару: https://avigan.com.ua/wika/uk/products/gdm_rc_100_t
- Ціна: за запитом
- Постачальник: AVIGAN (ТОВ «ВІКА Прилад»), офіційний партнер WIKA в Україні

## Опис

Густина газу є критично важливим параметром експлуатації для високовольтного комутаційного обладнання. Якщо необхідна густина газу не забезпечена, безпечна робота установки не може бути ...

## Застосування

- High-voltage switchgear
- Gas density monitoring of closed insulating gas compartments
- Remote monitoring of the insulating gas condition
- Raising an alarm when defined limit values have been reached

## Особливості

- Ideally suited for smart grid or modernisation projects
- Modbus ® delivers measured values for pressure, temperature and gas density as a digital signal
- The 4 ... 20 mA version outputs the absolute pressure at 20 °C [68 °F] or the gas density in g/l as an analogue signal
- Suitable for SF<sub>6</sub> and alternative insulating gases
- Complete on-site indication of the density and vacuum range on a 100 mm [3.94 in] dial

## Технічні характеристики

| Параметр | Значення |
|---|---|
| model | GDM-RC-100-T |
| product family | GDM |
| short description | Hybrid gas density monitor with reference chamber, Modbus® interface or 4...20 mA output, for SF6 and alternative insulating gases |
| subcategory | Hybrid gas density monitor with reference chamber |
| certifications | RoHS |
| ambient temp | -40 … 80 °C |
| ip rating | IP67 |
| pressure ranges | 0 … 10 bar; 0 … 12.5 bar |
| density referenced to C | 20 |
| process connections | G1/2 B |
| wetted parts material | Stainless steel |
| switching contacts | 4 |
| output signal | Modbus RTU; 4 ... 20 mA |
| has temperature compensation | true |

## Таблиці з даташита

### Basic information

| Measurement principle | Reference gas measurement |
|---|---|
| Nominal size of the optical indication | 100 mm[3.94 in] |
| Self-indication in case of malfunction | Integrated into the instrument, the switch contact is actuated in case of leakage in the reference chamber |

### Measuring element

| Type of measuring element | Bellows measuring system with reference chamber, piezo pressure sensor with temperature compensation |
|---|---|

### Accuracy specifications

| 1 | 2 | 3 |
|---|---|---|
| Switching accuracy Calibration pressure established by means of reference isochore, generated by Prof. Bier |  |  |
| -1 ...+5 bar at 20 °C [-14.50 ... +72.51 psi at 68 °F] | ±70 mbar [±1.01 psi] at calibration pressure at 20 °C [68 °F], gaseous phase ±100 mbar [±1.45 psi] at calibration pressure at -30 ...+50 °C [-22 ...+122 °F], gaseous phase |  |
| -1 ...+9 bar at 20 °C [-14.50 ... +130.53 psi at 68 °F] | ±100 mbar [±1.45 psi] at calibration pressure at 20 °C [68 °F], gaseous phase ±150 mbar [±2.17 psi] at calibration pressure at -30 ...+50 °C [-22 ...+122 °F], gaseous phase |  |
| -1 ... +11.5 bar at 20 °C [-14.50 ... +166.79 psi at 68 °F] | ±150 mbar [±2.17 psi] at calibration pressure at 20 °C [68 °F], gaseous phase ±200 mbar [±2.90 psi] at calibration pressure at -30 ...+50 °C [-22 ...+122 °F], gaseous phase |  |
| Calibration pressure | First switch point below filling pressure |  |
| Indication accuracy |  |  |
| -1 ...+5 bar at 20 °C [-14.50 ... +72.51 psi at 68 °F] | ±70 mbar [±1.01 psi] at calibration pressure at 20 °C [68 °F], gaseous phase ±100 mbar [±1.45 psi] at calibration pressure at -30 ...+50 °C [-22 ...+122 °F], gaseous phase |  |
| -1 ...+9 bar at 20 °C [-14.50 ... +130.53 psi at 68 °F] | ±100 mbar [±1.45 psi] at calibration pressure at 20 °C [68 °F], gaseous phase ±150 mbar [±2.17 psi] at calibration pressure at -30 ...+50 °C [-22 ...+122 °F], gaseous phase |  |
| -1 ... +11.5 bar at 20 °C [-14.50 ... +166.79 psi at 68 °F] | ±150 mbar [±2.17 psi] at calibration pressure at 20 °C [68 °F], gaseous phase ±200 mbar [±2.90 psi] at calibration pressure at -30 ...+50 °C [-22 ...+122 °F], gaseous phase |  |
| Switch hysteresis | Measuring range | Hysteresis level |
| -1 ...+5 bar at 20 °C [-14.50 ... +72.51 psi at 68 °F] | Typically < 90 mbar[< 1.30 psi] 1) |  |
| -1 ... +7.5 bar at 20 °C [-14.50 ... +108.77 psi at 68 °F] | Typically < 150 mbar[< 2.17 psi] 1) |  |
| -1 ... +11.5 bar at 20 °C [-14.50 ... +166.79 psi at 68 °F] | Typically < 220 mbar[< 3.19 psi] 1) |  |
| Lower switch hysteresis on request |  |  |

### Measuring range

| 1 | 2 | 3 |
|---|---|---|
| Measuring range | ■ 0 ... 10 bar abs. at 20 °C [0 ... 145.03 psi abs. at 68 °F] SF₆ gas ■ 0 ... 12.5 bar abs. at 20 °C [0 ... 181.29 psi abs. at 68 °F] SF₆ gas |  |
| Maximum overpressure | 1.43 times the measuring range |  |
| Minimum bursting strength | 30 bar [435.11 psi] |  |
| Dial |  |  |
| Scale range | End of measuring range | 1.3 bar or 1.8 bar [18.85 psi or 26.10 psi] above the first switch point and below the filling pressure |
| Scale graduation | ■ Single scale (divided into sections of different colours) ■ Double scale (divided into sections of different colours) ■ Triple scale (divided into sections of different colours) |  |
| Material | Aluminium |  |

### Process connection

| Standard | EN 837 |
|---|---|
| Thread size | G1/2 B |
| Connection | Axial or radial |
| Spanner flats | 22 mm[0.86 in] |
| Material | Stainless steel |

### Switch contacts

| Switch model | Potential-free change-over contact |
|---|---|
| Number of switches | ■ 1 x switch contact ■ 2 x switch contact ■ 3 x switch contact ■ 4 x switch contact Up to four switch contacts possible as change-over contacts |
| Switching function | Change-over contact |
| Switching direction | ■ Falling density ■ Rising density |
| Switch point setting | In accordance with customer specification, max. difference of lowest to highest contact: 4 bar [58.01 psi] |
| Maximum switching cycles | 10,000 mechanical and electrical |
| Insulation resistance of contact | > 100MΩ |
| Min. switching current | 10mA |
| Min. switching voltage | 12V |
| Circuits | Galvanically isolated |
| Monitoring functions |  |
| Self-monitoring | Integrated into the instrument, the switch contact is actuated in case of leakage in the reference chamber |

### Electrical characteristics

| Auxiliary power [V] | Resistive load [A] | Inductive load [A] |
|---|---|---|
| ≤ DC 30 | 5 1) | 3 1) |
| ≤ DC 50 | 1 | 1 |
| ≤ DC 75 | 0.75 | 0.75 |
| ≤ DC 125 | 0.5 | 0.03 |
| ≤ DC 250 | 0.25 | 0.03 |
| ≤ AC 125 | 5 1) | 2 1) |
| ≤ AC 250 | 5 1) | 2 1) |

### Electrical connection

| Connection type | 12-pin TTI plug-in terminal |
|---|---|
| Wire cross-section | ■ Min.0.25mm 2 ■ Max.2.5mm 2 |
| Grounding | In cable socket |

### Material

| 1 | 2 |
|---|---|
| Material (wetted) |  |
| Reference chamber (pressure element) | Stainless steel, filled with reference gas |
| Process connection | Stainless steel |
| Material (in contact with the environment) |  |
| Case and cover | Aluminium die-casting, powder-coated |
| Cable gland of the switch contacts | → For cable glands, see &#x27;Versions of cable glands for model GDM-RC-100-T with integrated gas density sensor&#x27; |
| Movement | Brass |
| Pointer | Aluminium, black |
| Window | Laminated safety glass |
| Dial | Aluminium |

### Operating conditions

| Place of use | Indoor/Outdoor |
|---|---|
| Altitude | Up to 2,000 m[6,562 ft] above sea level |
| Medium temperature range | -40 ...+80 °C [-40 ...+176 °F], gaseous phase |
| Operating temperature | -40 ...+80 °C [-40 ...+176 °F], gaseous phase |
| Ambient temperature range | -40 ...+80 °C [-40 ...+176 °F], gaseous phase |
| Storage temperature | -40 ...+70 °C [-58 ...+158 °F] |
| Humidity | ≤ 95 %relative humidity |
| Condensation | Non-condensing Compensating diaphragm against condensation |
| Helium leak test | ≤ 1 x 10 -8 mbar x l/s |
| Vibration resistance | 4g at 50 mbar [0.72 psi] distance from the switch point, no contact bounce (20 ...80 Hz) |
| Shock resistance | ■ 50g / 11 ms, no contact bounce with 200 mbar [2.90 psi] distance from the switch point ■ 150g without damage |
| Ingress protection of the complete instrument | ■ IP65, IP67 for versions with integrated gas density sensor ■ IP67 for versions with attached gas density sensor |
| Permissible pollution degree | 2 (per EN 61010-1) |
| Weight in kg | On request (depending on configuration) |

### Packaging and instrument labelling

| Product label | Lasered onto the reference chamber, highest weather resistance |
|---|---|

### Dielectric strength test

| Electric strength | ■ 2 kV pin on grounding (case) ■ 2 kV pin on pin (switch contact to switch contact) ■ 1 kV pin on pin within the switch contact - 1 minute |
|---|---|

| Compensated pressure range in bar abs. at 20 °C [psi abs. at 68 °F] (g/l SF₆) | Pressure in bar abs. [psi abs.] | Temperature | Output parameters | Output signal |
|---|---|---|---|---|
| 0 …2(12.28) [0 ... 29.00] | 0 …2.4 [0 ... 34.80] | -40 …+80 °C [-40 ...+176 °F] | ■ Density ■ Pressure at 20 °C [68 °F] ■ Pressure ■ Temperature | Modbus ® RTU |
| 0 …3(18.65) [0 ... 43.51] | 0 …3.7 [0 ... 53.66] |  |  |  |
| 0 ... 6 (38.87) [0 ... 87.02] | 0 ... 7.5 [0 ... 108.77] |  |  |  |
| 0 …8(53.4) [0 ... 116.03] | 0 …10.1 [0 ... 146.48] |  |  |  |
| 0 …10(68.96) [0 ... 145.03] | 0 …12.9 [0 ... 187.09] |  |  |  |
| 0 …12(85.79) [0 ... 174.04] | 0 …15.7 [0 ... 227.70] |  |  |  |
| 0 …16(124.64) [0 ... 232.06] | 0 …21.3 [0 ... 308.93] |  |  |  |

### Accuracy specifications

| 1 | 2 | 3 |
|---|---|---|
| Accuracy 1) |  |  |
| Compensated pressure ranges in bar abs. at 20 °C [psi abs. at 68 °F] (g/l SF₆) 0 …2(12.28) [0 ... 29.00] 0 …3(18.65) [0 ... 43.51] 0 ... 6 (38.87) [0 ... 87.02] | For -40 ... -20 °C [-40 ... -4 °F] For -20 ...+80 °C [-4 ...+176 °F] | ■ ±2% ■ ±1.5% ■ ±1.25% ■ ±0.75% |

### Accuracy specifications

| Compensated pressure ranges in bar abs. at 20 °C [psi abs. at 68 °F] (g/l SF₆) 0 …8(53.4) [0 ... 116.03] 0 …10(68.96) [0 ... 145.03] 0 …12(85.79) [0 ... 174.04] 0 …16(124.64) [0 ... 232.06] | For -40 ...+80 °C [-40 ...+176 °F] | ■ ±1.25% ■ ±0.6% |
|---|---|---|
| Pressure accuracy | ■ ±1 %at 20 °C [68 °F] ■ ±0.2 %at 20 °C [68 °F] |  |
| Temperature accuracy | ±1.5 K |  |
| Reference conditions | Per IEC 61298-1 |  |

| Compensated pressure range in bar abs. at 20 °C [psi abs. at 68 °F] (g/l SF₆) | Accuracy 1) | Output parameters | Output signal |
|---|---|---|---|
| 0 …2(12.28) [0 ... 29.00] | ■ ±2% ■ ±1.5% | Absolute pressure at 20 °C [68 °F] | 4 ...20mA |
| 0 …3(18.65) [0 ... 43.51] |  |  |  |
| 0 ... 6 (38.87) [0 ... 87.02] |  |  |  |
| 0 …8(53.4) [0 ... 116.03] |  |  |  |
| 0 …10(68.96) [0 ... 145.03] |  |  |  |
| 0 …12(85.79) [0 ... 174.04] |  |  |  |
| 0 …16(124.64) [0 ... 232.06] |  |  |  |

| Density range in g/l SF 6 (compensated pressure range in bar abs. at 20 °C [psi abs. at 68 °F]) | Accuracy 1) | Output parameters | Output signal |
|---|---|---|---|
| 0 …10(1.64) [0 ... 145.03] | ■ ±2% ■ ±1.5% | SF₆ gas density in g/l | 4 ...20mA |
| 0 …16(2.59) [0 ... 232.06] |  |  |  |
| 0 ... 25 (3.97) [0 ... 362.59] |  |  |  |
| 0 …40(6.16) [0 ... 580.15] |  |  |  |
| 0 …60(8.87) [0 ... 870.22] |  |  |  |
| 0 …80(11.33) [0 ... 1,160.3] |  |  |  |

| Compensated pressure range in bar abs. at 20 °C [psi abs. at 68 °F] (g/l SF₆) | Overload safety in bar abs. [psi abs.] | Burst pressure in bar abs. [psi abs.] |
|---|---|---|
| 0 ... 2 (12.28) [0 ... 29.00] | 6.2 [89.92] | 10 [145.03] |
| 0 ... 3 (18.65) [0 ... 43.51] | 14.5 [210.30] | 24 [348.09] |
| 0 ... 6 (38.87) [0 ... 87.02] | 14.5 [210.30] | 24 [348.09] |
| 0 ... 8 (53.4) [0 ... 116.03] | 31 [449.61] | 52 [754.19] |
| 0 ... 10 (68.96) [0 ... 145.03] | 31 [449.61] | 52 [754.19] |
| 0 ... 12 (85.79) [0 ... 174.04] | 31 [449.61] | 52 [754.19] |
| 0 ... 16 (124.64) [0 ... 232.06] | 62 [899.23] | 103 [1,493.89] |

### Case

| Case material | 316L |
|---|---|
| Case options | ■ Cable outlet ■ Metal cable outlet, shield optionally connected (heavy-duty version) |

| 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 |

## Документація

- [ds_sp6080_en_co_7c8968](https://avigan.com.ua/wika/docs/wika/ds_sp6080_en_co.pdf) — PDF, 935 KB, en