How to choose between electromagnetic, vortex, thermal mass, and differential-pressure flowmeters — and which of our models fits your medium, range, and accuracy.如何在电磁式、涡街、热式质量与差压流量计之间做选择——以及我们的哪款型号契合您的介质、量程与精度。Cara memilih antara flowmeter elektromagnetik, vorteks, massa termal, dan diferensial-tekanan — serta model mana yang cocok untuk medium, rentang, dan akurasi Anda.Cách chọn giữa lưu lượng kế điện từ, xoáy, khối lượng nhiệt và chênh áp — cũng như model nào phù hợp với môi chất, dải đo và độ chính xác của bạn.วิธีเลือกระหว่างโฟลว์มิเตอร์แบบ electro-magnetic วนกลับความร้อนและ difference-pressure — รวมถึงโมเดลใดที่เหมาะกับสื่อ ช่วงวัด และความแม่นยำของคุณCara memilih antara flowmeter elektromagnetik, vorteks, jisim terma dan perbezaan-tekanan — serta model mana yang sesuai untuk medium, julat dan ketepatan anda.Paano pumili sa pagitan ng electromagnetic, vortex, thermal mass, at differential-pressure flowmeter — at alin sa aming mga model ang babagay sa iyong medium, range, at accuracy.
The first question is always: what are you measuring, and what do you need from the measurement?第一个问题永远是：您在测量什么，又需要从测量中获得什么？Pertanyaan pertama selalu: apa yang Anda ukur, dan apa yang Anda butuhkan dari pengukuran?Câu hỏi đầu tiên luôn là: bạn đang đo gì, và bạn cần gì từ phép đo?คำถามแรกเสมอคือ: คุณกำลังวัดอะไร และคุณต้องการอะไรจากการวัดSoalan pertama sentiasa: apa yang anda ukur, dan apa yang anda perlukan daripada pengukuran?Ang unang tanong ay laging: ano ang sinusukat mo, at ano ang kailangan mo sa pagsukat?
| Technology技术TeknologiCông nghệเทคโนโลยีTeknologiTechnology | Best for适用场景Terbaik untukTốt nhất choเหมาะสำหรับTerbaik untukBest for | Key limits主要限制Batas utamaGiới hạn chínhข้อจำกัดสำคัญHad utamaKey limits | Models型号ModelModelโมเดลModelModels |
|---|---|---|---|
| Electromagnetic | Conductive liquids (≥1–5 uS/cm), water & wastewater, slurries, clean water | Cannot measure gases, steam, or non-conductive liquids | SE11E · SE10A · SE11H · SE13E · SEB600S |
| Vortex | Steam, gas, and liquid — one meter for all three; low maintenance | Accuracy affected by vibration; needs reasonable flow velocity | SV21 · SV23 · SVH |
| Thermal mass | Direct gas mass flow — no separate temperature/pressure compensation | Gas applications only; not for liquids | ST51 · ST54 |
| Differential pressure | Budget large-pipe measurement, high-temp/high-pressure, dirty or viscous media | Lower accuracy, higher permanent pressure loss (except SD41/SD42) | SD40 · SD41 · SD42 · SD43 · SD45 |
| Variable area (rotameter) | Simple, cost-effective local indication of liquid/gas/steam flow | Manual reading; needs transparent line or indicator | SR41 |
Once you know the technology, the remaining decisions are pipe size, accuracy class, and process conditions.确定技术路线后，剩下的决策就是管径、精度等级与工艺条件。Setelah mengetahui teknologinya, keputusan berikutnya adalah ukuran pipa, kelas akurasi, dan kondisi proses.Khi đã biết công nghệ, các quyết định còn lại là kích thước ống, cấp chính xác và điều kiện quy trình.เมื่อทราบเทคโนโลยีแล้ว การตัดสินใจที่เหลือคือขนาดท่อ ระดับความแม่นยำ และเงื่อนไขกระบวนการSetelah mengetahui teknologi, keputusan seterusnya ialah saiz paip, kelas ketepatan dan keadaan proses.Kapag alam mo na ang technology, ang natitirang desisyon ay pipe size, accuracy class, at process conditions.
| Model型号ModelModelโมเดลModelModel | Technology技术TeknologiCông nghệเทคโนโลยีTeknologiTechnology | Pipe range管径范围Rentang pipaDải ốngช่วงขนาดท่อJulat paipPipe range | Accuracy精度AkurasiĐộ chính xácความแม่นยำKetepatanAccuracy | Fluid temp流体温度Suhu fluidaNhiệt độ chất lưuอุณหภูมิของไหลSuhu bendalirFluid temp |
|---|---|---|---|---|
| SE11E | Electromagnetic | DN3–2000 | ±0.2 / ±0.3 / ±0.5% | -25~200°C |
| SE10A | Electromagnetic (24V DC) | DN10–300 | ±0.5% | -25~180°C |
| SE11H | Electromagnetic (slurry) | DN3–2000 | ±0.2 / ±0.3 / ±0.5% | -25~200°C |
| SE13E | Electromagnetic (sanitary) | clamp connection | ±0.5% | food/pharma grade |
| SEB600S | Electromagnetic (battery) | DN15–300 | ±0.5% | no power line needed |
| SV21 | Vortex | DN15–300 | liq ±0.75% · gas ±1.0% | -40~350°C |
| SV23 | Vortex (sanitary) | clamp connection | liq ±1.0% · gas ±1.5% | food/pharma/steam |
| SVH | Vortex (digital) | DN15–300 | liq ±0.75% · gas ±1.0% | -40~260°C |
| ST51 | Thermal mass | flange/thread/insert | ±1.0% (gas mass) | up to 100:1 turndown |
| SD41 | Balanced (DP) | DN25–1000 | liq ±0.5% · gas ±1.0% | 0.5D–2D straight run |
| SR41 | Variable area | DN15–150 | 1.5 / 2.5 class | -40~250°C |
Send us medium, temperature, pressure, pipe size, and required accuracy — we'll recommend a model and quote within 24 hours.告诉我们介质、温度、压力、管径与所需精度——我们将推荐型号并在 24 小时内报价。Kirimkan medium, suhu, tekanan, ukuran pipa, dan akurasi yang dibutuhkan — kami akan merekomendasikan model dan memberikan penawaran dalam 24 jam.Gửi cho chúng tôi môi chất, nhiệt độ, áp suất, kích thước ống và độ chính xác yêu cầu — chúng tôi sẽ đề xuất model và báo giá trong 24 giờ.แจ้งสื่อ อุณหภูมิ แรงดัน ขนาดท่อ และความแม่นยำที่ต้องการ — เราจะแนะนำโมเดลและเสนอราคาภายใน 24 ชั่วโมงHantar medium, suhu, tekanan, saiz paip dan ketepatan diperlukan — kami akan cadangkan model dan sebut harga dalam 24 jam.I-send sa amin ang medium, temperature, pressure, pipe size, at required accuracy — ire-recommend namin ang model at magququote within 24 hours.
From benchtop spectrophotometers to portable multi-parameter meters and online monitors. Match lab needs, field needs, and budget to the right analyzer family.
Read Guide →阅读指南 →Baca Panduan →Đọc Hướng dẫn →อ่านคู่มือ →Baca Panduan →Basahin ang Gabay →Industrial syringe pumps, vertical syringe pumps, plunger pumps, and peristaltic pumps — precision, pressure, capacity, and longevity compared side by side.
Read Guide →阅读指南 →Baca Panduan →Đọc Hướng dẫn →อ่านคู่มือ →Baca Panduan →Basahin ang Gabay →pH, ORP, dissolved oxygen, conductivity electrodes and online fluorescence sensors for water analysis. Matching electrode chemistry to your application.
Read Guide →阅读指南 →Baca Panduan →Đọc Hướng dẫn →อ่านคู่มือ →Baca Panduan →Basahin ang Gabay →Vietnam discharge limit A/B/C by flow rate — size and choose the right online COD monitor.按流量分档的越南 A/B/C 排放限值——据此选对在线 COD 监测仪。Batas pembuangan Vietnam A/B/C menurut laju alir — pilih monitor COD online yang tepat.Giới hạn xả thải A/B/C của Việt Nam theo lưu lượng — chọn đúng máy đo COD trực tuyến.ค่าปล่อย A/B/C ของเวียดนามตามอัตราการไหล — เลือกเครื่องวัด COD ออนไลน์ให้ถูกต้องHad pelepasan Vietnam A/B/C mengikut kadar alir — pilih monitor COD dalam talian yang betul.Limitasyon sa paglabas ng Vietnam A/B/C ayon sa daloy — piliin ang tamang online COD monitor.
Read the full guide →阅读完整指南 →Baca panduan lengkap →Đọc hướng dẫn đầy đủ →อ่านคู่มือเต็ม →Baca panduan penuh →Basahin ang buong gabay →Total Nitrogen cap under QCVN 40:2025 — match the method to your ammonia and organic load.QCVN 40:2025 的总氮上限——按氨氮与有机负荷匹配监测方法。Batas Total Nitrogen QCVN 40:2025 — sesuaikan metode dengan beban amonia dan organik Anda.Trần Total Nitrogen theo QCVN 40:2025 — chọn phương pháp phù hợp tải lượng amoni và hữu cơ.เพดานไนโตรเจนรวมตาม QCVN 40:2025 — เลือกวิธีให้เหมาะกับแอมโมเนียและภาระอินทรีย์Had Total Nitrogen QCVN 40:2025 — padankan kaedah dengan beban ammonia dan organik anda.Takda ng Total Nitrogen sa QCVN 40:2025 — itugma ang metoda sa amonia at organic load.
Read the full guide →阅读完整指南 →Baca panduan lengkap →Đọc hướng dẫn đầy đủ →อ่านคู่มือเต็ม →Baca panduan penuh →Basahin ang buong gabay →pH discharge band and how electrode and online pH transmitters keep you inside it.pH 排放区间，以及电极与在线 pH 变送器如何稳定保持在区间内。Rentang pH pembuangan dan bagaimana elektroda serta transmitter pH online menjaganya tetap terjaga.Dải pH xả thải và cách điện cực, bộ truyền pH trực tuyến giữ giá trị luôn trong dải.ช่วง pH ที่อนุญาต และขั้วไฟฟ้ากับตัวส่งสัญญาณ pH ออนไลน์ช่วยให้ค่าอยู่ในช่วงJulat pH pelepasan dan bagaimana elektrod serta pemancar pH dalam talian mengekalkannya.pH discharge band at kung paano pinapanatili ng electrode at online pH transmitter ang pagiging sumusunod.
Read the full guide →阅读完整指南 →Baca panduan lengkap →Đọc hướng dẫn đầy đủ →อ่านคู่มือเต็ม →Baca panduan penuh →Basahin ang buong gabay →Total Suspended Solids limit by flow class — pick gravimetric or optical TSS monitoring.按流量档位的 TSS 限值——选重量法还是光学法 TSS 监测。Batas TSS menurut kelas aliran — pilih pemantauan TSS gravimetri atau optik.Giới hạn TSS theo cấp lưu lượng — chọn giám sát TSS trọng lượng hay quang học.ขีดจำกัด TSS ตามระดับการไหล — เลือกเฝ้าวัด TSS แบบ gravimetric หรือแบบ opticalHad TSS mengikut kelas aliran — pilih pemantauan TSS gravimetri atau optik.Limitasyon ng TSS ayon sa klase ng daloy — piliin ang gravimetric o optical na pagsubaybay.
Read the full guide →阅读完整指南 →Baca panduan lengkap →Đọc hướng dẫn đầy đủ →อ่านคู่มือเต็ม →Baca panduan penuh →Basahin ang buong gabay →Magnetic flowmeters measure conductive liquids such as water, wastewater and slurry with no moving parts and work down to very low flow. Vortex flowmeters suit steam, gas and clean liquids or vapors and handle higher temperatures and pressures. Choose magnetic for conductive fluids, vortex for gas/steam or where a wider fluid range is required.电磁流量计可测量水、污水、浆液等导电液体，无活动部件，下限流量很低也能工作。涡街流量计适用于蒸汽、气体及清洁液体或蒸汽，并能承受更高温度与压力。导电液体选电磁，气体/蒸汽或需要更宽流体范围时选涡街。Flowmeter elektromagnetik mengukur cairan konduktif seperti air, air limbah, dan lumpur tanpa bagian bergerak, dan dapat bekerja pada laju alir sangat rendah. Flowmeter vortex cocok untuk uap, gas, serta cairan atau uap bersih, dan menahan suhu serta tekanan lebih tinggi. Pilih elektromagnetik untuk cairan konduktif, vortex untuk gas/uap atau bila rentang cairan lebih luas diperlukan.Lưu lượng kế từ tính đo chất lỏng dẫn điện như nước, nước thải và bùn loãng không có bộ phận chuyển động, và hoạt động tốt ở lưu lượng rất thấp. Lưu lượng kế xoáy phù hợp với hơi, khí và chất lỏng sạch hoặc hơi, chịu được nhiệt độ và áp suất cao hơn. Chọn từ tính cho chất lỏng dẫn điện, xoáy cho khí/hơi hoặc khi cần dải chất lỏng rộng hơn.โฟลว์มิเตอร์แม่เหล็กไฟฟ้าวัดของเหลวนำไฟฟ้าเช่น น้ำ น้ำเสีย และสแลอรี โดยไม่มีชิ้นส่วนเคลื่อนที่ และทำงานได้แม้ที่อัตราไหลต่ำมาก ส่วนโฟลว์มิเตอร์แบบ vortex เหมาะกับไอน้ำ ก๊าซ และของเหลวหรือไอน้ำที่สะอาด รวมถึงทนอุณหภูมิและความดันสูงขึ้น เลือกแม่เหล็กสำหรับของเหลวนำไฟฟ้า และแบบ vortex สำหรับก๊าซ/ไอน้ำหรือเมื่อต้องการช่วงของเหลวกว้างขึ้นFlowmeter elektromagnetik mengukur cecair pengalir seperti air, air sisa dan lumpur tanpa bahagian bergerak, dan berfungsi pada aliran sangat rendah. Flowmeter vortex sesuai untuk stim, gas, dan cecair atau wap bersih, serta menahan suhu dan tekanan lebih tinggi. Pilih elektromagnetik untuk cecair pengalir, vortex untuk gas/stim atau apabila julat cecair lebih luas diperlukan.Ang magnetic flowmeter ay sumusukat sa mga conductive liquid tulad ng tubig, wastewater, at slurry nang walang moving parts, at gumagana kahit sa napakababang flow. Ang vortex flowmeter ay angkop para sa steam, gas, at malinis na liquid o vapor, at kayang tumagal sa mas mataas na temperatura at pressure. Piliin ang magnetic para sa conductive fluids, vortex para sa gas/steam o kung kailangan ang mas malawak na fluid range.
Yes. Plan for about 5xDN straight pipe upstream and 2xDN downstream to stabilize the flow profile; use a flow conditioner if space is tight. Vortex meters also need straight runs (roughly 10-20xDN upstream) so the shedder frequency is measured accurately.需要。上游宜预留约 5 倍管径（5×DN）、下游约 2 倍管径（2×DN）的直管段以稳定流态；空间紧张时可用流整器。涡街流量计同样需要直管段（上游约 10–20×DN），才能准确测量旋涡频率。Ya. Sediakan sekitar 5xDN pipa lurus di hulu dan 2xDN di hilir untuk menstabilkan profil aliran; gunakan peredam aliran bila ruang sempit. Meter vortex juga memerlukan pipa lurus (sekitar 10-20xDN di hulu) agar frekuensi vortex terukur akurat.Có. Bố trí khoảng 5×DN ống thẳng phía thượng lưu và 2×DN phía hạ lưu để ổn định dòng chảy; dùng bộ hiệu chỉnh dòng nếu chật chội. Đồng hồ xoáy cũng cần đoạn ống thẳng (khoảng 10-20×DN thượng lưu) để đo tần số xoáy chính xác.ต้อง โดยวางท่อตรงประมาณ 5xDN ฝั่งเหนือน้ำและ 2xDN ฝั่งปลายน้ำเพื่อให้โปรไฟล์การไหลเสถียร หากพื้นที่แคบให้ใช้ตัวปรับสภาพการไหล โฟลว์มิเตอร์แบบ vortex ก็ต้องการท่อตรงเช่นกัน (ประมาณ 10-20xDN ฝั่งเหนือน้ำ) เพื่อวัดความถี่ vortex ได้แม่นยำYa. Sediakan kira-kira 5xDN paip lurus di hulu dan 2xDN di hilir untuk menstabilkan profil aliran; gunakan penyepadu aliran jika ruang sempit. Meter vortex juga memerlukan paip lurus (kira-kira 10-20xDN di hulu) supaya frekuensi vortex diukur dengan tepat.Oo. Maglaan ng humigit-kumulang 5xDN na straight pipe sa upstream at 2xDN sa downstream upang patatagin ang flow profile; gumamit ng flow conditioner kung masikip ang space. Kailangan din ng straight runs ang vortex meters (humigit-kumulang 10-20xDN sa upstream) upang tumpak na masukat ang vortex frequency.
Yes. With no obstructing parts, magnetic flowmeters handle dirty water, sludge and slurry well. The only requirements are that the liquid is conductive (conductivity above about 5 uS/cm) and the liner is compatible with the fluid.能。由于无阻碍部件，电磁流量计可很好地处理脏水、污泥和浆液。唯一要求是液体导电（电导率高于约 5 µS/cm）且衬里与流体兼容。Ya. Tanpa bagian penyumbat, flowmeter elektromagnetik menangani air kotor, lumpur, dan slurry dengan baik. Syaratnya hanya cairan konduktif (konduktivitas di atas sekitar 5 uS/cm) dan liner kompatibel dengan cairan.Có. Không có bộ phận cản trở, lưu lượng kế từ tính xử lý tốt nước bẩn, bùn và bùn loãng. Chỉ cần chất lỏng dẫn điện (độ dẫn điện trên khoảng 5 uS/cm) và lớp lót tương thích với chất lỏng.ได้ เนื่องจากไม่มีชิ้นส่วนอุดตัน โฟลว์มิเตอร์แม่เหล็กไฟฟ้าจัดการน้ำสกปรก ตะกอน และสแลอรีได้ดี เงื่อนไหนเดียวคือของเหลวต้องนำไฟฟ้า (ค่าความนำไฟฟ้าสูงกว่าประมาณ 5 uS/cm) และตัวบุผนังเข้ากันกับของเหลวBoleh. Tanpa bahagian sekatan, flowmeter elektromagnetik mengendalikan air kotor, lodak dan slurry dengan baik. Syaratnya hanya cecair mesti pengalir (kekonduksian melebihi kira-kira 5 uS/cm) dan liner serasi dengan cecair.Oo. Dahil walang obstructing parts, mahusay na hinahawakan ng magnetic flowmeter ang maruming tubig, sludge, at slurry. Ang tanging hinihingi ay conductive ang liquid (conductivity na higit sa humigit-kumulang 5 uS/cm) at compatible ang liner sa liquid.
Further reading延伸阅读Bacaan lebih lanjutĐọc thêmอ่านเพิ่มเติมBacaan lanjutKaragdagang pagbasa