# مقياس ضغط تفاضلي — 736.51

> لضغوط تفاضلية منخفضة جدًا، بدءًا من 2.5 mbar، مع عنصر كبسولي

- رمز الكتالوج: 736_51
- الطراز: 736.51
- الفئة: قياس الضغط › Pressure gauges
- صفحة المنتج: https://avigan.com.ua/wika/ar/products/736_51
- السعر: عند الطلب
- المورد: AVIGAN (TOV VIKA Prylad)، الشريك الرسمي لشركة WIKA في أوكرانيا

## نظرة عامة

مقياس ضغط كبسولي الطراز 736.51 يعتمد على نظام القياس الكبسولي المثبت والمستخدم، وهو مناسب للضغوط المنخفضة جدًا. عند تطبيق الضغط، فإن ...

## التطبيقات

- Differential pressure measurement at measuring locations with very low differential pressures, for transparent, gaseous, dry, clean, oil- and grease-free media, also in aggressive environments
- ⊕ media chamber also suitable for corrosive media
- Process industry: Chemical industry, petrochemical industry, on/offshore
- Filter monitoring in ventilation and heating systems or in overpressure and clean rooms
- Differential pressure controlled monitoring of ventilator and blast pressures

## المزايا

- Differential pressure measuring ranges from 0 … 2.5 mbar
- Ingress protection IP66
- Case and wetted parts from stainless steel
- Version with switch contact for PLC applications

## المواصفات الفنية

| المعيار | القيمة |
|---|---|
| model | 736.51 |
| product family | 736 |
| short description | Differential pressure gauge for very low differential pressures, from 2.5 mbar, with capsule element |
| subcategory | Differential pressure gauge |
| certifications | CE; RoHS; CRN; EAC |
| ambient temp | -20 … 60 °C |
| ip rating | IP66 |
| weight kg | 1.7 |
| languages in datasheet | en; de |
| pressure ranges | 0 … 2.5 mbar; 0 … 4 mbar; 0 … 6 mbar; 0 … 10 mbar; 0 … 25 mbar; 0 … 40 mbar; 0 … 60 mbar; 0 … 100 mbar; 0 … 16 mbar; 0 … 160 mbar; 0 … 25 inH2O; 0 … 0.5 kPa; 0 … 1 kPa; 0 … 1.6 kPa; 0 … 2.5 kPa; 0 … 4 kPa; 0 … 6 kPa; 0 … 10 kPa; 0 … 1000 mmH2O; 0 … 5 inH2O; 0 … 10 inH2O; 0 … 15 inH2O; 0 … 20 inH2O; 0 … 30 inH2O; 0 … 40 inH2O; 0 … 600 mbar; 0 … 1000 mbar; 0 … 25 mm H2O; 0 … 40 mm H2O; 0 … 60 mm H2O; 0 … 100 mm H2O; 0 … 160 mm H2O; 0 … 250 mm H2O; 0 … 400 mm H2O; 0 … 600 mm H2O; 0 … 1000 mm H2O; 0 … 5 in H2O; 0 … 10 in H2O; 0 … 15 in H2O; 0 … 20 in H2O; 0 … 25 in H2O; 0 … 30 in H2O; 0 … 40 in H2O; 0 … 0.5 mbar; 0 … 1 mbar; 0 … 1.6 mbar; 0 … 250 inH2O; 0 … 400 inH2O; 0 … 25 mmH2O; 0 … 40 mmH2O; 0 … 60 mmH2O; 0 … 100 mmH2O; 0 … 160 mmH2O; 0 … 250 mmH2O; 0 … 400 mmH2O; 0 … 600 mmH2O |
| accuracy class | 1.6 |
| accuracy standard | EN 837-1 |
| process connections | G ½ B; ½ NPT; EN 837-1; ANSI/B1.20.1; 2xG1/2B; 2x1/2NPT |
| case material | Stainless steel 1.4571 (316 Ti); Stainless steel 1.4571 (316Ti) |
| wetted parts material | Stainless steel 1.4571; Aluminium; Laminated safety glass; PUR; PTFE; NBR |
| sealing material | PTFE; NBR |
| dial size mm | 100 |
| process temp | -20 … 60 °C |
| output signal | Magnetic snap-action contact; Electronic contact (PNP transistor); Reed switch; Reed contact |
| power supply | DC 10 ... 30 V |
| electrical connection | Cable socket, M20 x 1.5 |
| switching function | Normally open, Normally closed, Change-over |
| switching contacts | 3 |

## جداول ورقة البيانات

| 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|
| Pressure gauge | Switch contact |  |  |  |
|  | Without | Magnetic snap-action contact (model 821) | Electronic contact (model 830 E) | Reed contact (model 851) |
| Model 736.51, with capsule | x |  |  |  |
| element |  | x |  |  |
|  |  | x |  |  |
|  |  |  | x |  |

### Basic information

| Nominal size | ■ Ø100mm ■ Ø160mm |
|---|---|
| Window | Laminated safety glass |
| Case |  |
| Design | Safety level 'S1' per EN 837-1:With blow-out device |
| Material | Stainless steel 1.4571 (316 Ti) |
| Ring | Bayonet ring, stainless steel |
| Mounting | ■ Without ■ Panel mounting flange, stainless steel ■ Panel mounting flange, polished stainless steel ■ Triangular profile ring with mounting bracket, polished stainless steel ■ Surface mounting flange, stainless steel |
| Case filling | ■ Without ■ Silicone oil |
| Movement | Stainless steel |

### Measuring element

| Type of measuring element | Capsule element |
|---|---|
| Material | Stainless steel 1.4571 |
| Leak tightness | Helium tested, leakage rate: < 5∙10 -3 mbar l/s |

### Accuracy specifications

| Accuracy class | ■ 1.6 ■ 1.0 |
|---|---|
| Temperature error | On deviation from the reference conditions at the measuring system: max. ±0.6 %/10 K of full scale value |
| Zero point setting | Via adjustment appliance at case circumference at 12 o&#x27;clock, stainless steel (wetted) |
| Reference conditions |  |
| Ambient temperature | +20 °C |

| Scale range | 2 | 3 | 4 | 5 |
|---|---|---|---|---|
| mbar |  |  |  |  |
| 0 ... 2.5 | 0 ... 4 | 0 ... 6 | 0 ... 10 | 0 ... 16 |
| 0 ... 25 | 0 ... 40 | 0 ... 60 | 0 ... 100 |  |
| 0 ... 0.5 0 ... 6 | 0 ... 1 0 ... 10 | 0 ... 1.6 | 0 ... 2.5 | 0 ... 4 |
| 0 ... 25 | 0 ... 40 | 0 ... 60 | 0 ... 100 | 0 ... 160 |
| mmH 2 O |  |  | 0 ... 1,000 |  |
| 0 ... 250 in H 2 O | 0 ... 400 | 0 ... 600 |  |  |
| 0 ... 5 | 0 ... 10 | 0 ... 15 | 0 ... 20 | 0 ... 25 |
| 0 ... 25 | 0 ... 30 | 0 ... 40 |  |  |

### Output signal: Contact model 821, magnetic snap-action contact

| Connection method | Magnetic snap-action contact |
|---|---|
| Switching technology | ■ No control unit and no supply voltage required ■ Direct switching up to 250 V, 1 A |
| Number of switch contacts |  |
| Span ≥ 25 mbar ...< 40 mbar 1) | Max. 2 switch contacts |
| Span ≥ 40 mbar | Max. 3 switch contacts 2) |
| Switching function | ■ Separate circuits with ≥ 2 switches ■ Cable break monitoring with parallel resistance (47 kΩ or 100 kΩ) The switching function of each switch is indicated by index 1, 2 or 3 |
| Model 821.1 | Normally open (clockwise pointer motion) |
| Model 821.2 | Normally closed (clockwise pointer motion) |
| Model 821.3 | Change-over; one contact breaks and one contact makes simultaneously when pointer reaches set point |
| Switch point setting | Set pointers of the contact pressure gauges are freely adjustable over the full scale range |
| Setting range (recommended) | 25 ... 75 %of span (0 ... 100 %onrequest) |
| Distance between switch points | Recommended minimum distance between 2 contacts: 20 %of span |
| Switch hysteresis | 2 ... 5 %(typical) |
| Switching current | 0.02 ... 0.3 A (resistive load) Permissible switch-on and switch-off current: ≤ 0.5 A |
| Switching voltage | AC/DC 24 ...250V |
| Switching power |  |
| Unfilled instruments | ≤ 30 W, ≤ 50VA |
| Filled instruments | ≤ 20 W, ≤ 20VA |
| Contact material | ■ Silver-nickel, gold-plated |

| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|
| Switching voltage | Unfilled instruments | Filled instruments |  |  |  |  |
|  | Resistive load | Inductive load | Resistive load | Inductive load |  |  |
|  | Direct cur - rent | Alternating current | cos ϕ>0.7 | Direct cur - rent | Alternating current | cos ϕ>0.7 |
| DC 220 V / AC 230 V | 100mA | 120mA | 65mA | 65mA | 90mA | 40mA |
| DC 110 V / AC 110 V | 200mA | 240mA | 130mA | 130mA | 180mA | 85mA |
| DC 48 V / AC 48 V | 300mA | 450mA | 200mA | 190mA | 330mA | 130mA |
| DC 24 V / AC 24 V | 400mA | 600mA | 250mA | 250mA | 450mA | 150mA |

### Output signal: Contact model 830 E, electronic contact

| Connection method | Electronic contact (PNP transistor) |
|---|---|
| Switching technology | ■ For direct triggering of a programmable logic controller (PLC) ■ Long service life due to non-contact sensor ■ Low influence on the indication accuracy ■ Fail-safe switching at high switching frequency ■ Insensitive to corrosion |
| Number of switch contacts |  |
| Span ≥ 25 mbar | Max. 3 switch contacts |
| Switching function | Contact versions: ■ 2-wire system ■ 3-wire system The switching function of each switch is indicated by index 1 or 2 |
| Model 830 E.1 | Normally open (clockwise pointer motion) |
| Model 830 E.2 | Normally closed (clockwise pointer motion) |
| Setting range (recommended) | 10 ... 90 %of span (0 ... 100 %onrequest) |
| Distance between switch points | Up to 2 contacts can be set to an identical set point. For a version with 3 contacts this is not possible.The left (1st) or right (3rd) contact may not be set to the same set point as the oth- er 2 contacts.The required displacement is approx. 30°, optionally to the right or to the left. |
| Switching current | ≤ 100mA |
| Switching voltage | DC 10 ...30V |

### Output signal: Contact model 851, reed switch

| Connection method | Bistable reed switch |
|---|---|
| Switching technology | ■ No control unit and no supply voltage required ■ Direct switching up to 250 V, 1 A ■ For direct triggering of a programmable logic controller (PLC) ■ Free from wear as without contact |
| Number of switch contacts |  |
| NS 100 | Max. 2 switch contacts |
| NS 160 | 1 switch contact |
| Switching function | ■ Separate circuits with ≥ 2 switches ■ Cable break monitoring with parallel resistance (47 kΩ or 100 kΩ) The switching function of each switch is indicated by index 1, 2 or 3 |
| Model 851.3 | Change-over; one contact breaks and one contact makes simultaneously when pointer reaches set point |
| Switch point setting | Set pointers of the contact pressure gauges are freely adjustable over the full scale range |
| Setting range (recommended) | 10 ... 90 %of span |
| Distance between switch points | When using two contacts, these cannot be set to the same point. Depending on the switch- ing function, a minimum clearance of 15 ... 30° is required. |
| Switch hysteresis | 3 ...5% |
| Switching current | AC/DC 1 A |
| Switching voltage 1) | AC/DC 250V |
| Switching power | 60 W, 60VA |
| Contact material | Rhodium |
| Transport current | AC/DC 2 A |
| Inductive load cosϕ | 1 |
| Contact resistance (static) | 100mΩ |
| Insulation resistance | 109Ω |
| Breakdown voltage | DC 1,000V |
| Switching time incl. contact chatter | 4.5 ms |

### Electrical connections 1)

| Connection type | ■ Cable socket, black PerVDE 0110 insulation group C/250V Cable gland M20 x 1.5 ■ Connector (instead of cable socket) |
|---|---|
| Wire cross-section | 6 screw terminals + PE for 2.5 mm² |
| Cable diameter | →See dimensions |
| Pin assignment | Connection details are given on the product label of the instrument. Connection termi- nals and ground terminals are appropriately marked. |
| Material | PA 6 (polyamide) |

### Operating conditions

| Medium temperature | +60 °C [+140 °F] maximum |
|---|---|
| Ambient temperature | -20 ...+60 °C [-4 ... 140 °F] |
| Storage temperature | -20 ...+60 °C [-4 ... 140 °F] |
| Pressure limitation |  |
| Steady | Full scale value |
| Fluctuating | 0.9 x full scale value |
| Ingress protection of the complete instrument | IP66 per IEC/EN 60529 |

| Logo | Description | Region |
|---|---|---|
|  | EU declaration of conformity | European Union |
|  | EMCdirective |  |
| - | CRN Safety (e.g. electr. safety, overpressure, ...) | Canada |

| Logo | Description | Region |
|---|---|---|
|  | EAC (option) Pressure equipment directive | Eurasian Economic Community |
|  | GOST Metrology, measurement technology | Russia |
|  | KazInMetr Metrology, measurement technology | Kazakhstan |
| - | MTSCHS Permission for commissioning | Kazakhstan |
|  | BelGIM Metrology, measurement technology | Belarus |
|  | UkrSEPRO Metrology, measurement technology | Ukraine |
|  | Uzstandard Metrology, measurement technology | Uzbekistan |

### Certificates

| Certificates | ■ 2.2 test report per EN 10204 (e.g. state-of-the-art manufacturing, indication accuracy) ■ 3.1 inspection certificate per EN 10204 (e.g. indication accuracy) |
|---|---|
| Recommended calibration interval | 1 year (dependent on conditions of use) |

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| NS | Dimensions in mm[in] | Weight in kg [lb] |  |  |  |  |  |  |  |  |  |
|  | a | b | D 1 | D 2 | d | e | G | h ±1 | X | SW |  |
| 100 | 15.5 [0.61] | 49.5 [1.95] | 101 [3.98] | 99 [3.90] | 133 [5.24} | 17.5 [0.69] | G½B | 170 [6.69] | 37 [1.46] | 22 [0.87] | 1.70 [3.75] |
| 160 | 15.5 [0.61] | 49.5 [1.95] | 161 [6.34] | 159 [6.26] | 133 [5.24} | 17.5 [0.69] | G½B | 200 [7.87] | 37 [1.46] | 22 [0.87] | 2.20 [4.85] |

| Model | 2 | Description | Order number |
|---|---|---|---|
|  | 910.17 | Sealings →See data sheet AC 09.08 | - |
|  | IV3x, IV5x | Valve manifold for differential pressure measuring instruments →See data sheet AC 09.23 | - |
|  | - | Diaphragm seal | On request |

## المستندات

- [ds_pm0708_en_co_ce8064](https://avigan.com.ua/wika/docs/wika/ds_pm0708_en_co.pdf) — PDF, 626 KB, en