Fischer & Porter 698B179U01 – Electromagnetic Flow Transmitter Signal Converter Board | 70B Series Platform
Engineering Background: The Fischer & Porter 698B179U01 is a signal converter/transmitter board designed for the 70B series electromagnetic flowmeter system — one of the most widely deployed mag-flow platforms in process industries worldwide. Fischer & Porter, now integrated into ABB’s measurement portfolio, established the 70B series as an industry benchmark for accuracy and reliability in conductive liquid flow measurement across chemical, water treatment, and industrial process applications.
Product Positioning: This unit serves as the core signal processing and output conditioning board within the 70B series transmitter enclosure. It converts the low-level millivolt signals generated by the flow sensor’s electromagnetic coil into standardized process outputs (4–20 mA / frequency / pulse) suitable for direct integration with PLCs, DCS controllers, SCADA systems, and data acquisition platforms. Procurement engineers sourcing replacement or spare transmitter electronics for existing 70B series installations will find this board a direct, verified-compatible solution.
Complete Technical Specifications
| Part Number | 698B179U01 |
| Manufacturer | Fischer & Porter (ABB) |
| Series / Platform | 70B Series Electromagnetic Flowmeter System |
| Module Type | Signal Converter / Transmitter PCB Assembly |
| Output Signal | 4–20 mA analog; frequency/pulse output |
| Input | Electromagnetic flow sensor (70B series coil signal) |
| Supply Voltage | Per 70B series transmitter specification (typically 85–265 V AC or 24 V DC) |
| Enclosure Compatibility | Fischer & Porter 70B series transmitter housing |
| Approvals / Compliance | CE marked; designed to IEC/EN process instrumentation standards |
| Weight (unit) | Approx. 3.0 kg (packaged) |
| Condition | Surplus / Refurbished — tested and verified |
| Country of Origin | USA / Germany (Fischer & Porter / ABB manufacturing) |
Proven Application Environments
- Water & Wastewater Treatment: Municipal flow metering, effluent monitoring, pump station control
- Chemical Processing: Acid, alkali, and slurry flow measurement in corrosive media pipelines
- Food & Beverage: CIP-compatible flow monitoring in hygienic process lines
- Pulp & Paper: Stock flow and consistency measurement in wet-end processes
- Mining & Minerals: Slurry and tailings flow quantification
- Power Generation: Cooling water and demineralized water flow control loops
Engineering Advantages
- Direct Drop-In Replacement: Exact OEM part number — no re-engineering or recalibration of the sensor required when replacing the transmitter board
- Proven Signal Integrity: Fischer & Porter’s 70B signal processing architecture delivers stable, low-noise 4–20 mA output even in electrically noisy industrial environments
- Extended Platform Longevity: Enables continued operation of installed 70B series flowmeters without full system replacement, protecting capital investment
- Universal PLC/DCS Compatibility: Standard analog and pulse outputs interface directly with Siemens, Allen-Bradley, Honeywell, Yokogawa, and all major automation platforms
- Reduced Downtime: Stocked surplus unit available for immediate dispatch — critical for unplanned maintenance scenarios
System Architecture & Signal Flow
In the 70B series architecture, the electromagnetic flow sensor generates a small AC millivolt signal proportional to fluid velocity via Faraday’s law of electromagnetic induction. The 698B179U01 converter board receives this raw sensor signal, applies gain and zero-point conditioning, performs analog-to-digital conversion, and outputs a linearized 4–20 mA current loop signal and/or scaled frequency/pulse train. The board also manages coil excitation drive signals and provides diagnostic status outputs. This closed-loop signal chain ensures measurement accuracy is maintained across the full flow range without external signal conditioning hardware.
Sourcing & Quality Verification
- All units sourced from documented industrial surplus channels or decommissioned plant equipment
- Each board undergoes visual inspection, cleaning, and functional bench-test verification prior to listing
- Part number 698B179U01 verified against Fischer & Porter / ABB documentation
- Packaged with anti-static protection and foam cushioning for safe international transit
- Certificate of conformance available upon request for regulated procurement processes
Procurement Process
- Confirm compatibility: Verify your existing transmitter housing is a Fischer & Porter 70B series unit and that the board form factor matches 698B179U01
- Request a quote: Contact support@konmask.com for volume pricing, lead time confirmation, and documentation packages
- Place order: Secure checkout via Konmask.com with HKD/USD pricing; wire transfer and PayPal accepted for B2B orders
- Shipping: DHL / FedEx international express with full tracking; export documentation provided for customs clearance
- After-sales support: 30-day return window for verified non-functional units; technical support available via email
Technical FAQ
Q: Is the 698B179U01 compatible with all 70B series flowmeter sizes?
A: Yes — the transmitter board is common across the 70B series platform regardless of pipe diameter or liner material. The sensor calibration data is stored separately in the sensor itself.
Q: Can this board be used with ABB-branded 70B series transmitters?
A: ABB acquired Fischer & Porter and continued the 70B series under the ABB brand. Compatibility should be verified against the specific ABB model number on your transmitter housing.
Q: Do you provide calibration certificates?
A: Functional test reports are available. Full NIST-traceable calibration can be arranged at additional cost — please enquire at time of order.
Q: What is the lead time for this part?
A: Units in stock ship within 1–3 business days. Contact us to confirm current availability before placing a time-critical order.
Q: Can I return the unit if it does not resolve my fault?
A: Yes — we offer a 30-day return policy for units confirmed non-functional upon receipt, subject to our standard returns procedure.
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