مقياس ضغط تفاضلي مع جهات تلامس/مفاتيح كهربائية
الوصف
مقياس ضغط كبسولي طراز 736.51 يعتمد على نظام القياس الكبسولي المُثبت ويُناسب الضغوط المنخفضة جدًا. عند تطبيق الضغط، يتم نقل تمدد عنصر الكبسولة، المتناسب مع الضغط الوارد، إلى الحركة ويُشار إليه.
بالنسبة للإصدار المزود بجهة تلامس للتبديل، تتوفر تلامسات قَفْل مغناطيسي سريعة (snap-action) ومفاتيح القصب (reed switches) وتلامسات إلكترونية. ولتفعيل وحدات التحكم المنطقي القابلة للبرمجة (PLC)، يمكن استخدام التلامسات الإلكترونية ومفاتيح القصب.
الشكل يسارًا: الطراز 736.51، NS 100
الشكل يمينًا: الطراز 736.51، NS 160 مع تلامسات التبديل
المزايا
- مدى قياس فرق الضغط من 0 … 2.5 mbar
- حماية من الدخول IP66
- العلبة والأجزاء الملامسة للمائع من الفولاذ المقاوم للصدأ
- نسخة بملامس تبديل لتطبيقات PLC
الأسئلة والأجوبة
ما أدنى مدى قياس متاح لهذا المقياس؟
يبدأ المدى من 0 … 2.5 mbar، مع توفر مدى أصغر مثل 0 … 0.5 mbar و0 … 1.6 mbar، وحتى مدى أعلى يصل إلى 0 … 1000 mbar.
ما دقة القياس؟
فئة الدقة 1.6 وفقًا للمعيار EN 837-1.
ما هي وصلات العملية المتوفرة؟
الوصلات المتاحة هي G ½ B و½ NPT (وفق EN 837-1 أو ANSI/B1.20.1)، كما تتوفر نسخ بوصلتين 2xG1/2B و2x1/2NPT، ونسخة بدون وصلة.
ما الوسائط التي يناسبها هذا المقياس؟
يناسب الوسائط الشفافة الغازية الجافة النظيفة الخالية من الزيت والشحم، وغرفة الوسط صالحة أيضًا للوسائط المسببة للتآكل.
ما حدود درجة الحرارة المسموحة؟
درجة حرارة البيئة والوسط من -20 … +60 °C.
هل يقاوم المقياس الغبار ورشاش الماء؟
نعم، تصنيف الحماية من دخول الأجسام والماء هو IP66.
كيف يتم ربطه بنظام تحكم؟
يتوفر تلامس إلكتروني (ترانزستور PNP) ومفاتيح قصب Reed للتفعيل مع وحدات PLC، بتغذية DC 10 ... 30 V وتوصيل عبر قابس كابل M20 x 1.5.
ما الذي يميز الطراز 736.51 عن المقاييس المجاورة له؟
هو نسخة مزودة بجهات تلامس للتبديل تعمل بعنصر كبسولي لفروق الضغط المنخفضة جدًا، بعلبة وأجزاء مبللة من الفولاذ المقاوم للصدأ 1.4571 (316Ti) وحماية IP66.
| الطراز | 736.51 |
| السلسلة | 736 |
| النوع الفرعي | Capsule element differential pressure gauge |
| نطاق الضغط | 0…2.5 mbar · 0…4 mbar · 0…6 mbar · 0…10 mbar · 0…25 mbar · 0…40 mbar · 0…16 mbar · 0…60 mbar · 0…100 mbar · 0…160 mbar · 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…250 mmH2O · 0…1000 mmH2O · 0…5 inH2O · 0…10 inH2O · 0…15 inH2O · 0…20 inH2O · 0…25 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…30 mbar · 0…25 mmH2O · 0…40 mmH2O · 0…60 mmH2O · 0…100 mmH2O · 0…160 mmH2O · 0…400 mmH2O · 0…600 mmH2O · 0…30 inH2O · 0…40 inH2O |
| فئة الدقة | 1.6 |
| معيار الدقة | EN 837-1 |
| وصلة العملية | G ½ B½ NPTEN 837-1ANSI/B1.20.1Without2xG1/2B2x1/2NPT |
| درجة حرارة العملية | −20…+60 °C |
| إشارة الخرج | Magnetic snap-action contact · Electronic contact (PNP transistor) · Reed switch · Reed contact |
| التغذية | DC 10 ... 30 V |
| وصلة كهربائية | Cable socket, M20 x 1.5 |
| وظيفة التبديل | Normally open, Normally closed, Change-over |
| نقاط التبديل | 3 |
| مادة العلبة | Stainless steel 1.4571 (316 Ti) |
| مادة الأجزاء الملامسة | Stainless steel 1.4571, Aluminium, Laminated safety glass, PUR, PTFE, NBR |
| مادة الإحكام | PTFE, NBR |
| حرارة المحيط | −20…+60 °C |
| تصنيف IP | IP66 |
| الوزن | 1.7 kg |
| الشهادات | CERoHSCRNEAC |
| قطر القرص | 100 mm |
| لغات ورقة البيانات | EN, DE, ES, FR |
| 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 |
| 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 |
| Type of measuring element | Capsule element |
|---|---|
| Material | Stainless steel 1.4571 |
| Leak tightness | Helium tested, leakage rate: < 5∙10 -3 mbar l/s |
| 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'clock, stainless steel (wetted) |
| Reference conditions | |
| Ambient temperature | +20 °C |
عرض الكل (16)
| Scale range | ||||
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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) |
| 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 | ■ 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) |
| 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 | 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 |
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