Honeywell PPT-R Intrinsically Safe Pressure Transmitter (CE Certified)

Overview

The Honeywell PPT-R Intrinsically Safe Pressure Transmitter is an engineered solution for continuous, high-fidelity pressure monitoring in hazardous locations where ignition sources must be rigorously controlled. Built upon Honeywell’s legacy of industrial sensor reliability, the PPT-R operates on piezoresistive silicon sensing technology, delivering stable and repeatable measurements across demanding process environments. Its intrinsic safety design eliminates the risk of thermal or spark-induced ignition in atmospheres containing flammable gases, vapors, or combustible dusts—making it suitable for deployment in upstream oil & gas wellheads, chemical reactor vessels, refinery manifolds, and solvent-handling facilities. The transmitter complies with international explosion protection standards including ATEX Directive 2014/34/EU (Zone 1 and Zone 21), IEC 60079-0 and -11, UL 913 (Class I, Division 1), and carries CE marking under the EU Machinery and EMC Directives. Its full-scale accuracy of ±0.05% FSO over a wide operating temperature range (–40 °C to +85 °C) ensures minimal thermal drift and supports simplified system calibration protocols in field-deployed instrumentation architectures.

Key Features

• Intrinsically safe certification per FM, CSA, UL 913, and IECEx standards—validated for use in Class I, Division 1; Zone 1; and Zone 21 classified areas.
• Piezoresistive silicon pressure sensing element with stainless steel (316L) wetted parts for long-term stability and corrosion resistance in aggressive chemical media.
• Hermetically sealed, IP67-rated housing with integrated armored cable—eliminates potential ingress points and reduces field wiring complexity.
• Dual-output capability: configurable 0–5 VDC analog signal for PLC/DCS integration, plus optional RS232 or RS485 digital interface supporting Modbus RTU protocol for remote diagnostics and configuration.
• Low power consumption (< 1.5 W typical), enabling compatibility with intrinsically safe barriers commonly deployed in distributed control systems.
• Zero and span adjustment via external potentiometers or digital command—no disassembly required for routine field recalibration.

Sample Compatibility & Compliance

The PPT-R is designed for compatibility with non-corrosive and mildly corrosive process media—including hydrocarbons, water-based fluids, compressed air, nitrogen, and common solvents—when used with appropriate wetted material selection (standard 316L SS diaphragm and housing). It meets the mechanical and environmental requirements of IEC 61298-2 (industrial pressure transmitters) and conforms to electromagnetic compatibility standards per EN 61326-1 (industrial environment) and EN 61000-6-2/-4. For regulated industries, its traceable calibration documentation supports GLP and GMP-aligned validation workflows. While not explicitly FDA 21 CFR Part 11–compliant as a standalone device, its digital output enables secure data logging when integrated with compliant SCADA or MES platforms featuring audit trail and electronic signature functionality.

Software & Data Management

Configuration and diagnostics are performed using Honeywell’s proprietary PPT Configuration Utility (Windows-based), which communicates via RS232/RS485 to adjust damping, output scaling, linearization tables, and fault reporting thresholds. The utility generates calibration certificates with NIST-traceable reference data and supports export of configuration files for version-controlled backup. When interfaced with enterprise-level asset management systems (e.g., Emerson DeltaV, Siemens Desigo CC, or OSIsoft PI System), the PPT-R provides real-time pressure telemetry with timestamped values, diagnostic status flags (e.g., sensor saturation, open-circuit detection), and configurable alarm thresholds—enabling predictive maintenance analytics and regulatory compliance reporting.

Applications

• Downhole and surface wellhead pressure monitoring in oil & gas production, including hydraulic fracturing and ESP pump control loops.
• Continuous pressure surveillance in chemical synthesis reactors, distillation columns, and batch mixing tanks subject to explosive vapor atmospheres.
• Overpressure protection and feedstock flow regulation in pharmaceutical clean utility systems (e.g., purified steam, compressed air) where Zone 21 dust hazards exist.
• Environmental emissions monitoring stacks requiring certified pressure input for mass flow calculations under EPA Method 2 or ISO 5167.
• Offshore platform hydraulic control systems where compact size, seawater resistance, and intrinsic safety are mandatory.

FAQ

Is the PPT-R certified for use in Zone 21 dust environments?
Yes—the PPT-R holds IECEx and ATEX certification for Zone 21 (combustible dust) per IEC 60079-11, with temperature class T4 (max surface temp ≤135 °C).
Can the analog and digital outputs operate simultaneously?
Yes—both 0–5 VDC analog and RS485 Modbus RTU outputs are active concurrently without signal degradation or timing conflict.
What is the maximum allowable supply voltage for intrinsically safe operation?
When connected through an approved IS barrier (e.g., Pepperl+Fuchs KFD2-STC4), the maximum loop voltage is 28 VDC with current limited to ≤100 mA.
Does Honeywell provide NIST-traceable calibration certificates with shipment?
Standard units ship with factory calibration data; NIST-traceable certificates (with uncertainty budget) are available as a configurable option at order entry.
Is firmware upgrade supported in-field?
Firmware updates require connection via RS232 and execution of Honeywell’s signed update package using the Configuration Utility—no hardware modification is needed.