870ITPH-FYFNZ-7 Foxboro pH Transmitter 870IT Series

Foxboro 870ITPH-FYFNZ-7 870IT Series Intelligent pH Transmitter

Foxboro 870ITPH-FYFNZ-7 870IT Series Intelligent pH Transmitter

Availability: 10 left in stock

Foxboro 870ITPH-FYFNZ-7 870IT Series Intelligent pH Transmitter Configured for continuous electro-analytical monitoring and signal conversion in DCS architectures, the Foxboro...

SKU: 870ITPH-FYFNZ-7

Manufacturer: Foxboro
Product No.: 870ITPH-FYFNZ-7
Product Type: pH Transmitters
Product Origin: USA
Payment:T/T, Western Union
Weight: 1905g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Foxboro 870ITPH-FYFNZ-7 870IT Series Intelligent pH Transmitter

Configured for continuous electro-analytical monitoring and signal conversion in DCS architectures, the Foxboro 870ITPH-FYFNZ-7 (870ITPH Intelligent pH Transmitter) provides direct physical/electrical execution. The instrument converts low-impedance glass electrode potential inputs across a pH 0 to 14 scale into a dual digital-analog output interface. Powered via a 2-wire 10.5 to 42.0 VDC loop, the transmitter incorporates local digital processing to evaluate millivolt potentials generated by primary sensor elements, mitigating high-impedance signal degradation across long field cable runs.

Hardware Specifications

Parameter	Specification
Model	870ITPH-FYFNZ-7
Brand	Foxboro
Origin	United States
Weight	4.20 lbs
Dimensions	Standard 870IT Field Mount Enclosure
Operating Temp	-20 to +70 deg C
Power Consumption	1.0 W
Measurement Range	pH 0 to 14
Measurement Accuracy	+/- 0.01 pH
Output Signal	4-20 mA DC (Two-Wire Loop-Powered)
Communication Protocol	HART Protocol
Power Supply Input	10.5 to 42.0 VDC
Temperature Compensation	Automatic via Pt100 / Pt1000 RTD Input
Enclosure Rating	NEMA 4X / IP66 (Corrosion-Resistant Aluminum Alloy)

Process Control & Fieldbus Connectivity

The instrument integrates a 4-20 mA HART loop protocol layer overlaying the primary analog output signal, facilitating continuous multidrop digital telemetry, remote device calibration, and online sensor diagnostic tracking. Internal electronics execute cold junction compensation protocols alongside automatic temperature correction via dedicated Pt100/Pt1000 RTD input networks. Channel-to-channel isolation safeguards signal integrity by suppressing common-mode noise interferences and ground loops between field sensors, local LCD display drivers, and central control system I/O modules.

Frequently Asked Questions

Q: How does the internal signal processing handle sensor drift during continuous operation?

A: The transmitter utilizes automated temperature compensation via Pt100 or Pt1000 RTD inputs, dynamic temperature coefficient corrections, and remote HART offset adjustments to maintain measurement accuracy of +/- 0.01 pH across changing process conditions.

Q: What are the electrical loop-power limitations for field wiring compliance?

A: The device operates over a supply range of 10.5 to 42.0 VDC, drawing up to 1.0 W. The loop voltage drop must account for total field wire resistance, intrinsic safety barriers where applicable, and minimum operating voltage at maximum loop current (20 mA).

Field Installation Guidelines

Mount the NEMA 4X / IP66 enclosure directly on a vertical pipe or flat surface using standard mounting hardware. Route sensor and loop-power cables through specified conduit entries to prevent moisture ingress. Terminate field wiring at the labeled terminal block, ensuring proper polarity for the 10.5 to 42.0 VDC two-wire supply. Connect the Pt100/Pt1000 RTD lines directly to dedicated compensation terminals.

Ground the enclosure to a low-impedance plant earth ground using the external grounding lug. Ensure signal wiring shields are grounded at one end only—typically at the control system rack—to prevent ground loop interference with high-impedance pH signals. Verify conduit seal integrity following wire termination to maintain environmental ratings in harsh installation sites.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.