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Rosemount 228
Quick Start Guide
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Emerson Rosemount 228 Quick Start Guide

Quick Start Guide
00825-0100-3228, Rev AA
May 2020
Rosemount™ 228 Toroidal Conductivity Sensors
Quick Start Guide May 2020
Safety information
High pressure and temperature hazard
Failure to reduce the pressure and temperature may cause serious injury to personnel.
Before removing the sensor, reduce the process pressure to 0 psig and cool down the process temperature.
CAUTION
Equipment damage
The wetted sensor materials may not be compatible with process composition and operating conditions.
Application compatibility is entirely the operator's responsibility.
Physical access
Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end users’ equipment. This could be intentional or unintentional and needs to be protected against.
Physical security is an important part of any security program and fundamental to protecting your system. Restrict physical access by unauthorized personnel to protect end users’ assets. This is true for all systems used within the facility.
Contents
Overview......................................................................................................................................3
Install........................................................................................................................................... 4
Wire........................................................................................................................................... 23
Calibration................................................................................................................................. 30
Maintaining and troubleshooting............................................................................................... 36
Accessories................................................................................................................................ 37
Return of materials.....................................................................................................................39
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May 2020 Quick Start Guide

1 Overview

1.1 Description

The Rosemount 228 Toroidal Conductivity Sensor uses flow-through technology to measure conductivity in highly conductive liquids up to 2 S/cm (2,000,000 µS/cm). This sensor works in dirty and corrosive applications where metal electrode sensors would otherwise fail. A robust sensor design makes the Rosemount 228 ideal for measuring concentrations of acid, base, and salt solutions.
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Quick Start Guide May 2020

2 Install

2.1 Unpack and inspect

Procedure
1. Inspect the shipping container(s). If there is damage, contact the shipper immediately for instructions.
2. If there is no apparent damage, unpack the container(s).
3. Ensure that all items shown on the packing list are present. If items are missing, contact your local Customer Care representative
4. Save the shipping container and packaging. They can be used to return the instrument to the factory in case of
damage.
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2.2 Install the sensor

Figure 2-1: Insertion Adapter 23242-02 for use with ¾-in. MNPT Threaded Process Connection (-21 Option)
A. Cable B. 1-in. FNPT C. Adapter ¾-in. FNPT thread
D. 2-135 Viton® O-ring
E. Nut, hex union 2 inch F. Neck, union fitting
G. 1½-in. MNPT
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Quick Start Guide May 2020
Figure 2-2: Insertion Adapter 23242-03 for use with ⅝-in. 11 UNC Threaded Process Connection (-20 Option)
A. Cable B. ¾-in. FNPT C. Adapter ⅝-in.-11 UNC-2B x ¾-in. NPT
D. 2-135 Viton O-ring
E. Nut, hex union 2 inch F. Neck, union fitting
G. 1½-in. MNPT
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Figure 2-3: Insertion Adapter 2001990 for use with ¾-in. MNPT Threaded Process Connection (-21 Option)
A. Cable B. ¾-in. FNPT C. 1-132 Viton O-ring
D. 2-in. MNPT
Procedure
1. Mount the sensor in the pipe.
2. Keep at least 1 inch (25 mm) between the sensor and pipe wall. If the clearance is too small, calibrate the sensor in place.
3. Mount the sensor in a vertical pipe run with flow from top to bottom. If the sensor must be mounted in a horizontal pipe run, orient the
sensor in the 3 o'clock or 9 o'clock position.
4. Ensure the sensor is completely submerged in liquid.
2.3

Install the insertion/retraction assembly

2.3.1 Installation considerations Requirements

Process connection
Quick Start Guide 7
1½-in. Larger openings may keep the sensor from inserting far enough into the process liquid.
Quick Start Guide May 2020
Line size
• 2-in. line (requires in-place calibration)
• 3-in. line or larger
Valve
Retraction
1½-in. NPT full port valve (PN 9340065)
2 ft. (0.6 m)
clearance
Excess vibration
Provide mechanical support if excess vibration is expected.
Flush water
Provide ⅛-in. valves in inlet and outlet flush ports. Position flush ports so the retraction chamber can be drained.
Installation specifications
Table 2-1: Sensor Specifications
Specification Description
Wetted materials Body materials either glass-filled PEEK, glass-
Process connection -20: ⅝-in. 11 UNC, -21: ¾-in. MNPT
Cable length 20 ft. (6.1 m)
Maximum cable length 200 ft. (61.0 m)
Weight/shipping weight 2 lb./3 lb. (1.0 kg/1.5 kg)
filled Tefzel, or unfilled Tefzel. Option -20 has EPDM gasket
Table 2-2: Maximum Operating Temperature and Pressure
Body material option
-02 (Glass-filled PEEK [standard temperature])
-03 (Glass-filled PEEK [high temperature])
-04 (Glass-filled Tefzel)
-05 (Unfilled Tefzel) 248 °F (120 °C) 200 psig (1480 kPa) 150 psig (1135 kPa
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Maximum temperature
248 °F (120 °C) 295 psig (2135 kPa) 220 psig (1618 kPa
392 °F (200 °C) 295 psig (2135 kPa) 220 psig (1618 kPa
248 °F (120 °C) 200 psig (1480 kPa) 150 psig (1135 kPa
Maximum pressure Maximum pressure
(for CRN registration only)
[abs])
[abs])
[abs])
[abs])
May 2020 Quick Start Guide
Table 2-3: Insertion Adapter Specifications
Specification 23242-02 23242-03 2001990
Sensor compatibility
Process connection
Wetted materials 316 stainless
Maximum temperature
Maximum pressure
Maximum pressure (for CRN registration only)
Weight/shipping weight
Option -21 Option -20 Option -21
1½-in. MNPT 1½-in. MNPT 2-in. MNPT
steel, glass-filled PEEK, and Viton
392 °F (200 °C) 392 °F (200 °C) 100 °F (38 °C) 185 °F (85 °C)
295 psig (2135 kPa [abs])
220 psig (1618 kPa [abs])
3 lb./4 lb. (1.5 kg/2.0 kg)
316 stainless steel, glass-filled
®
PEEK, and Viton
295 psig (2135 kPa [abs])
220 psig (1618 kPa [abs])
3 lb./4 lb. (1.5 kg/2.0 kg)
CPVC and Viton
100 psig (791 kPa [abs])
N/A
1 lb./2 lb. (0.5 kg/1.0 kg)
45 psig (412 kPa [abs])
Table 2-4: Retraction Assembly Specifications
Specification Description
Sensor compatibility The retraction assemblies are used with
Wetted materials 315 stainless steel, ethylene polypropylene
Process connection 1½-in. MNPT
Maximum operating condition 392 °F (200 °C), 295 psig (2135 kPa [abs])
Rosemount 228 - [ ]-20-54-62 only
(EP), unfilled PTFE, carbon-filled PTFE
Table 2-5: Maximum Retraction/Insertion Conditions
Condition 23311-00, mechanical
retraction assembly
Maximum temperature 392 °F (200 °C) 266 °F (130 °C)
Maximum pressure 295 psig (2135 kPa [abs]) 35 psig (343 kPa [abs])
Maximum insertion travel 10.5-in. (267 mm) 12.0-in. (305 mm)
Weight/shipping weight 12 lb./15 lb. (5.5 kg/7.0 kg) 9 lb./12 lb. (4.5 kg/5.5 kg)
Quick Start Guide 9
23311-01, manual retraction assembly
Quick Start Guide May 2020
Table 2-6: Ball Valve Specifications (Sold Separately)
Specification Description
Part number 9340065
Wetted materials 316 stainless steel, PTFE
Process connection 1½-in. FNPT
Weight/shipping weight
4 lb./5 lb. (2.0 kg/2.5 kg)
Figure 2-4: Ball Valve Pressure and Temperature
Options (manual or mechanical retraction assemblies)
Retract manual retraction assembly
Prerequisites
Ensure the system pressure is less than 35 psig (342 kPa [abs]).
Procedure
1. Push in on the sensor using the top of the junction box. Slowly loosen the collet nut.
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High pressure
Failure to reduce pressure may cause a loose collet nut to disengage and cause injury to personnel.
Reduce pressure to 0 psig. Do not loosen collet nut until pressure is 0 psig.
2. When the collet nut is loose enough, slowly ease the sensor back so that it clears the ball valve. Close the valve to the process line.
3. Drain the retraction chamber contents using the ⅛-in. flush ports.
4. Loosen the 3-in. hex union nut. Remove the sensor and tube assembly.
5. Replace the 3-in. hex nut O-ring. Place the sensor and tube assembly back in the retraction assembly. Tighten the 3-in. hex union nut. Verify that the ⅛-in. flush ports are closed.
Note
With the ball valve closed and the retraction chamber ⅛-in. flush ports open, some residual process fluid may leak from the 3 in. hex union nut female ACME threads. This leakage is normal and to be expected.
High pressure
Failure to reduce pressure may cause a loose collet nut to disengage and cause injury to personnel.
Retraction chamber contents may be under pressure. Before opening the ball valve, make sure that the process pressure is less than 35 psig (342 kPa [abs]).
6. Open the ball valve and check for leaks. Insert the sensor into the process. Tighten the collet nut.
Retract mechanical retraction assembly
Prerequisites
Ensure the system pressure is less than 295 psig (2135 kPa [abs]) before retracting the sensor.
Procedure
1. Retract the sensor using a ½-in. (13 mm) socket wrench. When the sensor clears the ball valve, close the valve.
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Quick Start Guide May 2020
Retraction chamber contents may be under pressure.
Failure to reduce pressure may cause a loose part to disengage and cause injury to personnel.
2. Drain the retraction chamber using ⅛-in. flush ports.
3. Loosen the 3-in. hex union nut and remove the retraction stop collar and orange clamp top. Remove the sensor and tube assembly.
4. Replace the 3-in. hex nut O-ring. Place the sensor and tube assembly back in the retraction assembly. Replace the retraction stop collar about ½-in. in front of the clamp. Tighten the clamp screws, retraction stop collar, and 3-in. hex union nut. Verify that the ⅛-in. flush ports are closed.
Note
With the ball valve fully closed and the retraction chamber ⅛-in. flush ports open, some residual process fluid maay leak from the 3 in. hex union female ACME threads. This leakage is normal and to be expected.
5. Before opening the ball valve, make sure that the process pressure is less than 295 psig (3135 kPa [abs]). Open the valve, check for leaks, and insert the sensor into the process.
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