Model / Part Number: Rosemount 8705 Sensor
Availability subject to quotation and stock confirmationSupplied for maintenance, retrofit and replacement projects. Exact suffix, configuration and condition must be confirmed before ordering.
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The Rosemount 8705 with 8712E/8712EM is a remotely mounted electromagnetic flowmeter system for measuring the volumetric flow of conductive liquids and slurries. The obstructionless flanged sensor generates an induced voltage proportional to fluid velocity, while the wall-mount transmitter converts it into flow outputs and diagnostics. Pipe size, liner, electrode, flange, power supply, communication protocol and the exact transmitter revision must be confirmed before quotation.
Rosemount 8705 مع 8712E/8712EM هو نظام مقياس تدفق كهرومغناطيسي بتركيب بعيد لقياس التدفق الحجمي للسوائل والملاط الموصّل للكهرباء. يولد الحساس ذو الشفتين والخالي من العوائق جهدًا حثيًا يتناسب مع سرعة السائل، بينما يحوله المرسل الجداري إلى إشارات تدفق وتشخيصات. يجب تأكيد قطر الأنبوب والبطانة والأقطاب والشفة والتغذية وبروتوكول الاتصال وإصدار المرسل الفعلي قبل عرض السعر.
The Rosemount 8705 and 8712E/8712EM form a remote-mount electromagnetic flowmeter system for conductive process liquids and slurries. The 8705 is a flanged, obstructionless sensor with a welded and hermetically sealed housing. Its coils establish a magnetic field across the full pipe, and its electrodes detect the voltage induced by the moving conductive liquid.
The remote wall-mount transmitter processes the sensor signal into flow rate, totalized flow and control-system outputs. Depending on the configured revision, available options can include 4–20 mA HART, Modbus RS-485, FOUNDATION Fieldbus, a backlit local display, keypad operation and advanced diagnostics. Exact performance, pressure limits, process temperature, wetted materials, approvals and compatibility depend on both complete order codes.
| Measurement principle / مبدأ القياس | Electromagnetic flow measurement based on Faraday's law — |
|---|---|
| Measured media / الوسط المقاس | Conductive liquids and slurries — |
| System components / مكونات النظام | Rosemount 8705 flanged sensor plus remote 8712E or current 8712EM transmitter — |
| Reference accuracy / دقة المرجع | ±0.25 standard over 40:1; up to ±0.15 over 13:1 with eligible option % of rate |
| Minimum conductivity / أقل موصلية | 5 µS/cm |
| Line size / قطر الأنبوب | 15–900 / 0.5–36 mm / in |
| Maximum flow velocity / أقصى سرعة تدفق | 12 / 39.37 m/s / ft/s |
| Sensor coil resistance / مقاومة ملف الحساس | 7–16 ohm |
| Sensor ambient temperature / درجة حرارة محيط الحساس | -29 to +60 standard; -50 to +60 with SH all-stainless design °C |
| Process temperature / درجة حرارة العملية | Liner-dependent; selected fluoropolymer configurations reach +177 °C |
| Sensor ingress protection / حماية دخول الحساس | Type 4X, IP66 and IP68; IP68 to 10 m for 48 h when correctly prepared — |
| Liner materials / مواد البطانة | PTFE; ETFE; PFA; PFA+; polyurethane; neoprene; Linatex; Adiprene — |
| Electrode materials / مواد الأقطاب | 316L SST; Nickel Alloy 276; tantalum; titanium; 80% platinum/20% iridium — |
| Process connections / وصلات العملية | ASME, EN, AWWA, AS and JIS flange options; configuration-dependent — |
| Sensor calibration data / بيانات معايرة الحساس | 16-digit calibration number entered in the matched transmitter — |
| Transmitter mounting / تركيب المرسل | Remote wall mount — |
| AC power supply / مصدر تغذية التيار المتردد | 90–250, 50–60 VAC / Hz |
| DC power supply / مصدر تغذية التيار المستمر | 12–42 VDC |
| Signal and protocol options / خيارات الإشارة والبروتوكول | 4–20 mA HART; Modbus RS-485; FOUNDATION Fieldbus; configuration-dependent — |
| Transmitter ambient without display / حرارة محيط المرسل بدون شاشة | -40 to +60 °C |
| Transmitter ambient with display / حرارة محيط المرسل مع شاشة | -20 to +60 °C |
| Transmitter humidity / رطوبة المرسل | 0–95 up to +60 % RH / °C |
| Transmitter ingress protection / حماية دخول المرسل | Type 4X, IP66 — |
| Local operator interface / واجهة التشغيل المحلية | Backlit display and 15-button tactile keypad on applicable 8712EM configurations — |
| Diagnostics / التشخيصات | Smart Meter Verification, high process noise, empty pipe, grounding and wiring fault; option-dependent — |
| Straight-run recommendation / توصية الأنبوب المستقيم | 5 upstream and 2 downstream for best accuracy pipe diameters |
| Pressure rating / تصنيف الضغط | Depends on line size, flange, liner and process temperature — |
| Hazardous-area approvals / اعتمادات المناطق الخطرة | Configuration- and region-dependent; verify exact nameplates — |
| Availability & Delivery | Availability subject to quotation and stock confirmation |
|---|---|
| Lead Time | RFQ confirmation required |
| Shipping Options | Air freight, sea freight, express |
| Packaging | Secure export packaging |