MODEL 396P and 396PVP

SECTION 7.0

 

TROUBLESHOOTING

7.2 TROUBLESHOOTING WITHOUT ADVANCED DIAGNOSTICS.

Table 7-2, below, lists common problems, causes and remedies typically encountered in process measurement.

TABLE 7-2. Troubleshooting without Advanced Diagnostics

Problem

Probable Cause

 

Remedy

 

 

 

 

 

Meter reads off scale. (Display

Defective preamplifier

 

Replace preamplifier (for code 02

reads overrange).

 

 

sensors). For code 01, replace sensor.

 

 

 

 

 

T.C. element shorted

 

Check T.C. element as instructed

 

 

 

in Section 6.1 and

 

 

 

replace sensor if defective.

 

 

 

 

 

Sensor not in process. Sample

 

Make sure sensor is in process with

 

stream is low or air bubbles are

 

sufficient sample stream (refer to

 

present.

 

Section 2.0 for installation details).

 

 

 

 

 

Open glass electrode

 

Replace sensor.

 

 

 

 

 

Reference element open - no contact

 

Replace sensor.

 

 

 

 

Display reads between 3 and 6 pH

Electrode cracked

 

Replace sensor.

regardless of actual pH of solution

 

 

 

or sample.

 

 

 

 

 

 

 

Meter or display indication swings

T.C. element shorted

 

Check T.C. element as instructed

or jumps widely in AUTO T.C. Mode.

 

 

in Section 6.1 and replace

 

 

 

sensor if defective.

 

 

 

 

Span between buffers extremely

T.C. element open

 

Check T.C. element as instructed

short in AUTO T.C. Mode.

 

 

in Section 6.1 and replace sensor

 

 

 

if defective.

 

 

 

 

Sluggish or slow meter indication

Electrode coated

 

Clean sensor as instructed in

for real changes in pH level.

 

 

Sections 6.2 or Section 6.3.2.

 

 

 

Replace sensor if cracked.

 

 

 

 

 

Electrode defective

 

Replace sensor.

 

 

 

 

Transmitter cannot be standardized.

Electrode coated or cracked

 

Clean Sensor as instructed in

 

 

 

Sections 6.2 or Section 6.3.2

 

 

 

Replace sensor if cracked.

 

 

 

 

 

Defective preamplifier

 

Replace preamplifier.

 

 

 

 

Transmitter short spans between

Aged glass electrode or high

 

Replace sensor.

two different buffer values.

temperature exposure

 

 

 

 

 

 

 

Electrode coated

 

Clean Sensor as instructed in

 

 

 

Section 6.2 or Section 6.3.2.

 

 

 

Replace sensor if cracked.

 

Air bubbles trapped in sensor end

 

Shake the sensor in solution. See

 

between glass bulb and sensor body

 

Section 2.0 for mounting guidelines.

 

 

 

 

28

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Emerson Process Management 396PVP instruction manual Troubleshooting Without Advanced Diagnostics

396P, 396PVP specifications

Emerson Process Management has established itself as a leader in the automation industry, providing innovative solutions that enhance operational efficiencies and improve process control. Among its notable offerings are the 396PVP and 396P pressure transmitters, designed to meet the needs of various industrial applications.

The 396PVP model is equipped with advanced features that facilitate high-performance measurements in both challenging and standard environments. This pressure transmitter utilizes a piezoresistive sensor, allowing for accurate and reliable pressure readings. It supports a wide range of measurement capabilities, making it suitable for liquids, gases, and vapors across diverse industries. With an impressive pressure range, the 396PVP caters to various applications, from HVAC systems to more demanding scenarios in oil and gas extraction.

In terms of technology, the 396PVP leverages digital communication protocols, including HART and FOUNDATION Fieldbus, enabling seamless integration into existing control systems. This capability not only enhances data transmission but also facilitates remote monitoring and diagnostics, significantly reducing downtime and maintenance requirements. The transmitter is also designed with an intuitive interface, allowing for straightforward configuration and calibration via handheld devices or software.

On the other hand, the 396P model offers exceptional performance for demanding pressure measurement requirements. It features robust construction materials that ensure durability and resistance to harsh environments, making it an ideal choice for applications in chemical processing and power generation. The 396P is designed with a fast response time, ensuring real-time data accuracy, which is critical for maintaining process integrity and safety.

Both models showcase Emerson's commitment to safety and reliability. They are built to meet stringent industry standards, which guarantees quality performance in hazardous locations. Furthermore, the embedded diagnostic features provide real-time health monitoring, alerting operators of any potential issues before they escalate, thereby safeguarding operations.

In summary, the 396PVP and 396P pressure transmitters from Emerson Process Management exemplify cutting-edge technology and high-quality engineering. With their advanced sensing capabilities, robust design, and integration-friendly features, these transmitters are essential tools for optimizing process control and enhancing overall productivity in various industrial settings. Whether it's for precise measurements in a chemical plant or reliable pressure readings in an oil field, the 396 series offers the performance and durability required to thrive in today's demanding operational landscapes.