Chemical Injection Skid Monitoring (Methanol & Inhibitors) — ATEX

Ensures consistent dosing, prevents corrosion and plugging

Pressure

Valve position

Quick Overview

Problem

Chemical injection skids are critical for flow assurance and asset protection, yet failures often go undetected between inspections. Blocked lines, pump malfunction, or empty tanks can compromise corrosion control, hydrate prevention, and production safety — especially in ATEX-classified areas.

Solution

SENSAiO’s ATEX-certified pressure and temperature sensors provide continuous, wireless monitoring of chemical injection skids, enabling early detection of injection loss, blockage, or abnormal operating conditions.

Value

Improved flow assurance • Reduced integrity risk • Early fault detection • Lower OPEX

ATEX

Zones 0–2 • Ex ia IIC T4 Gb certified pressure & temperature sensors

The Operational Challenge

Chemical injection systems deliver methanol, corrosion inhibitors, scale inhibitors, and hydrate inhibitors to critical upstream assets such as flowlines, wellheads, and separators.

Despite their importance, injection skids often suffer from:

  • Blocked or partially blocked injection lines
  • Pump degradation or failure
  • Frozen or waxed injection points
  • Empty or depleted chemical tanks
  • Incorrect injection pressure or temperature

Typical monitoring practices rely on:

  • Periodic manual checks
  • Local gauges with no remote visibility
  • Reactive maintenance after failure

This leads to:

  • Undetected loss of chemical protection
  • Increased corrosion, scaling, or hydrate risk
  • Unplanned shutdowns or asset damage
  • Frequent personnel exposure in ATEX zones

Without continuous monitoring, operators lack confidence that chemicals are being injected as designed.

Why Continuous Skid Monitoring Matters

Injection pressure and temperature provide direct insight into skid health and injection effectiveness.

Continuous monitoring enables operators to:

  • Detect blocked or restricted injection lines
  • Identify pump performance degradation
  • Confirm injection pressure is within design range
  • Detect freezing or thermal anomalies at injection points
  • Verify continuous chemical delivery between site visits

A sudden pressure increase may indicate blockage, while pressure loss can signal pump failure or empty tanks. Temperature trends help identify freezing risk or abnormal operating conditions. Together, pressure and temperature data transform chemical injection from assumption-based to verified.

SENSAiO Solution

SENSAiO delivers a wireless, intrinsically safe monitoring solution tailored for upstream chemical injection skids.

Core Components

Pressure Sensor (ATEX Ex ia IIC T4 Gb)

Monitors injection line pressure to detect blockage, pump failure, or abnormal operation.

Pressure Sensor (ATEX Ex ia IIC T4 Gb)

Monitors skid, line, or injection point temperature to detect freezing, wax risk, or abnormal thermal behaviour.

Wireless Communication

Supports LoRaWAN, Modbus, and MQTT for integration with SCADA and chemical management systems.

Installation & Power

Battery-powered, retrofit-friendly installation with no cabling or production interruption.

Operational Benefits

  • Verified chemical injection continuity
  • Early detection of skid and line faults
  • Reduced chemical-related flow assurance incidents
  • Lower inspection and maintenance effort

Results and ROI

Metric Before After
Injection visibility Intermittent Continuous
Fault detection Late Early
Flow assurance risk Higher Reduced
Site visits Frequent Reduced

ATEX Compliance and Safety

All sensors used for chemical injection skid monitoring comply with:

  • Ex II 2 G Ex ia IIC T4 Gb (Zones 0–2)
  • IECEx certification
  • ATEX Directive 2014/34/EU

Intrinsically safe design enables installation on live injection skids without shutdown.

Integration and compatibility

Protocols

LoRaWAN, Modbus RTU/TCP, MQTT, REST API

Systems

SCADA, DCS, chemical management platforms

Vendors

Honeywell, ABB, Emerson, Schneider

Cybersecurity

AES-128 encrypted communication with secure transport

FAQ - Common Questions

Are Sensa.io sensors compatible with any gateway or network?

Yes, they connect to any LoRaWAN or MQTT infrastructure (Kerlink, Cisco, Milesight, MultiTech, etc.) for flexible integration with existing SCADA systems.

What ATEX certifications apply to Sensa.io devices?

All hazardous-area models are certified Ex II 2 G Ex ia IIC T4 Gb and IECEx approved for Zones 0–2.

What is the typical battery life?

Up to 10 years at 15-minute intervals, depending on signal strength and environment.

How are the sensors integrated into existing systems?

Through standard protocols — LoRaWAN, Modbus, MQTT, REST API — no proprietary middleware needed.

How does predictive maintenance reduce OPEX?

Early anomaly detection reduces emergency interventions by 30–40 %, extends equipment life and lowers energy costs.

What does the Sensa.io Valve Position Sensor actually measure?

The device detects real-time valve position states—open, closed, or intermediate—with high accuracy. It continuously sends this information wirelessly to your monitoring dashboard.

Can this sensor detect partial valve movement or stuck valves?

Yes. The sensor identifies irregular patterns such as partial movement, delayed response, or stuck valves, enabling early maintenance before failure occurs.

Is this sensor suitable for manual, motorized, and actuated valves?

Yes. It supports a wide range of valve types including ball, gate, butterfly, actuator-driven, and manual valves.

How fast does it update the valve position?

You can configure the reporting interval—from seconds to minutes—depending on your operational and battery needs.

How long does installation take?

Most installations take under 10 minutes. The sensor mounts using brackets or clamps without modifying existing valves.

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