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1

Description and specifications

1.1

Description

The Rosemount 222 toroidal flow through conductivity sensor measures conductivity in
highly conductive liquids up to 2 S/cm (2,000,000 

μ

S/cm). A noninvasive flow through

design allows for in-line installations without any obstruction to sample and makes these
sensors ideal for use with viscous or fibrous liquids.

1.2

Unpacking and inspection

Complete the following steps when you unpack your instrument.
1.

Inspect the shipping container. If there is damage, contact the shipper immediately
for instructions.

2.

If there is no apparent damage, and remove the sensor.

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 reused to return the sensor to the factory in case of damage.

1.3

Sensor Specifications

Sensor specifications

Table 1-1:   

Sensor specification

Description

Wetted materials

Body materials either glass-filled PEEK, glass-filled Tefzel,
or unfilled Tefzel. Option -20 has EPDM gasket

Process connection

-20: 5/8 in. 11 UNC, -21: 3/4 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)

Maximum operating temperature and pressure

Table 1-2:   

Body material option

Maximum temperature

Maximum pressure

Maximum pressure (for
CRN registration only)

-02 (Glass-filled PEEK
(standard temperature))

248 °F (120 °C)

295 psig (2135 kPa)

220 psig (1618 kPa [abs])

Description and specifications

Rosemount 228 Sensor

1

Содержание Rosemount 228

Страница 1: ...Reference Manual LIQ MAN 228 Rev V April 2018 Rosemount 228 Toroidal Conductivity Sensors ...

Страница 2: ......

Страница 3: ...re to 0 psig and cool down the process temperature Failure to reduce the pressure and temperature may cause serious injury to personnel CAUTION EQUIPMENT DAMAGE The wetted sensor materials may not be compatible with process composition and operating conditions Application compatibility is entirely your responsibility ...

Страница 4: ......

Страница 5: ...ion Assembly PN 23311 00 12 2 2 3 Replacing Seals in Manual and Mechanical Retraction Assemblies 15 Chapter 3 Wiring 19 3 1 Wiring the Sensor 19 Chapter 4 Calibration 23 4 1 Sensor calibration 23 4 2 Calibrating against a Standard Solution 23 4 3 Calibrating against a Referee in Process 25 4 4 Calibrating against a Referee Grab Sample 26 Chapter 5 Maintaining and Troubleshooting 29 5 1 Maintaining...

Страница 6: ...Contents ii Reference Manual ...

Страница 7: ...esent If items are missing contact your local Customer Care representative 4 Save the shipping container and packaging They can be reused to return the sensor to the factory in case of damage 1 3 Sensor Specifications Sensor specifications Table 1 1 Sensor specification Description Wetted materials Body materials either glass filled PEEK glass filled Tefzel or unfilled Tefzel Option 20 has EPDM ga...

Страница 8: ...th option 21 1 1 2 in MNPT 316 stainless steel glass filled PEEK Viton 392 F 200 C 295 psig 2135 kPa 220 psig 1618 kPa abs 3 lb 4 lb 1 5 kg 2 0 kg 23242 03 For use with option 20 1 1 2 in MNPT 316 stainless steel glass filled PEEK Viton 392 F 200 C 295 psig 2135 kPa 220 psig 1618 kPa abs 3 lb 4 lb 1 5 kg 2 0 kg 2001990 For use with option 21 2 in MNPT CPVC Viton 100 F 38 C 100 psig 791 kPa abs N A...

Страница 9: ... 5 kg 7 0 kg 23311 01 manual re traction assembly 266 F 130 C 35 psig 343 kPa abs 12 0 in 305 mm 9 lb 12 lb 4 5 kg 5 5 kg Ball valve specifications sold separately Table 1 6 Specification Description Part number 9340065 Wetted materials 316 stainless steel Teflon TFE Process connection 1 1 2 in FNPT Weight shipping weight 4 lb 5 lb 2 0 kg 2 5 kg Ball valve pressure and temperature Description and ...

Страница 10: ...unting adapter This option comes standard with an EPDM gasket Viton and Kalrez gaskets are also available 4 Not available with option 62 5 Cable may be extended using the remote junction box PN 23550 00 sold separately and extension cables 6 Recommended for use with transmitter models 1054 and 2054 May be used with transmitter models 1055 1056 1066 54C 54eC 81T 2081T 3081T 4081T 5081 and XMT but n...

Страница 11: ...nsor in place Ensure that the sensor is completely submerged in liquid Mounting the sensor in a vertical pipe run with the flow from bottom to top is best If the sensor must be mounted in a horizontal pipe run orient the sensor in the 3 o clock or 9 o clock position Rosemount 228 dimensional drawing Figure 2 1 Install Rosemount 228 Sensor 5 ...

Страница 12: ...Insertion adapter 23242 02 for use with 3 4 in MNPT threaded process connection 21 option Figure 2 2 Install 6 Reference Manual ...

Страница 13: ...Insertion adapter 23242 03 for use with 5 8 in 11 UNC threaded process connection 20 option Figure 2 3 Install Rosemount 228 Sensor 7 ...

Страница 14: ...nsor in the 3 o clock or 9 o clock position 4 Ensure that the sensor is completely submerged in liquid 2 2 Insertion Retraction Assembly Installation Requirements Insertion Retraction Assembly Installation Requirements Table 2 1 Requirement Description Process connection 1 1 2 in Larger openings may keep the sensor from inserting far enough into the process liq uid Line size 3 in 2 in line require...

Страница 15: ...vide 1 8 in valves in inlet and outlet flush ports Position flush ports so that the retraction chamber can be drained 2 2 1 Manual Retraction Assembly Installing a Manual Retraction Assembly 1 Loosen the collet nut and retract the sensor tube into the retraction chamber See Figure 2 5 Install Rosemount 228 Sensor 9 ...

Страница 16: ... 1 1 2 in NPT full port valve mounted on the process line or vessel 4 Thread the sensor cable through the tube into the junction box Screw the sensor into the tube Hand tighten the sensor an additional half turn once the gasket is seated 5 Connect the sensor and interconnecting cable leads to the terminal strip in the junction box See Figure 2 6 Install 10 Reference Manual ...

Страница 17: ... 3 and Figure 3 4 For cable PN 23294 00 follow the wiring for the 228 54 sensor For cable PN 23294 05 follow the wiring for the 228 56 sensor with the following exception Refer to the wire function diagram for the 228 56 option in Figure 3 1 and identify the RTD wire bundle Connect the RTD wires to the transmitter as follows Green RTD in Black No connection Clear RTD common or RTD return White RTD...

Страница 18: ...e retraction assembly Tighten the 3 in hex union nut Verify that the 1 8 in flush ports are closed NOTICE With the ball valve closed and the retraction chamber 1 8 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 WARNING HIGH PRESSURE Retraction chamber contents may be under pressure Before opening th...

Страница 19: ...7 Mechanical retraction assembly Figure 2 7 2 Terminate the sensor wiring in the junction box See Figure 2 6 for wiring details 3 Connect the other end of the cable to the transmitter Install Rosemount 228 Sensor 13 ...

Страница 20: ...en the union nut 7 Open the ball valve and check for leaks 8 Using a 1 2 in 13 mm socket wrench inser the sensor into the process line or vessel 9 Position the sensor at least 1 2 in 13 mm away from any wall of the vessel or pipe Set the travel stop collar A net to the nut housing WARNING HIGH PRESSURE Do not loosen cap screws or collar when pressurized Failure to reduce pressure may cause a loose...

Страница 21: ...nto the retraction chamber and fully close the ball valve 2 Drain the retraction chamber contents using the 1 8 in flush ports WARNING HIGH PRESSURE Retraction chamber contents may be under pressure Reduce pressure to 0 psig before opening the retraction chamber Failure to reduce pressure may cause a loose part to disengage and cause injury to personnel 3 For mechanical retraction assemblies mark ...

Страница 22: ...flon cup seal 13 Replace all damaged parts with replacement parts from Figure 2 8 or Figure 2 9 Replace the sensor tube if the surface is damaged A rough or uneven surface will prevent the Teflon cup from sealing Mechanical retraction assembly replacement parts Figure 2 8 Install 16 Reference Manual ...

Страница 23: ...eal 16 For manual retraction assemblies slide the 3 in hex union nut collet nut with nut guard junction box compression nut and plastic ferrules onto the sensor tubee 17 For mechanical retraction assemblies slide the 3 in hex union nut retraction stop collar junction box compression nut and plastic ferrules onto the sensor tube 18 Connect the junction box to the sensor tube and wire the sensor lea...

Страница 24: ...r proper location 20 Place the union nut O ring at the bottom of the bushing housing Insert the sensor assembly into the retraction chamber and tighten the 3 in hex union nut 21 For mechanical retraction assemblies install the nut housing cap See Figure 2 8 or previously marked position for proper location Install 18 Reference Manual ...

Страница 25: ... away from ac conductors and high current demanding equipment Do not cut the cable NOTICE For additional wiring information on this product please refer to the Liquid Transmitter Wiring Diagrams Wire functions Figure 3 1 Wiring Rosemount 228 Sensor 19 ...

Страница 26: ...Wiring diagram for Rosemount 1056 and 56 Transmitters Figure 3 2 Wiring 20 Reference Manual ...

Страница 27: ...Wiring diagram for Rosemount 1066 Transmitters Figure 3 3 Wiring diagram for Rosemount 5081 Transmitters Figure 3 4 Wiring Rosemount 228 Sensor 21 ...

Страница 28: ...t the transmitter end refer to the appropriate transmitter wiring diagram For interconnecting cable 23294 00 use the 228 54 wiring diagram For interconnecting cable 23294 04 and 23294 05 use the 228 54 wiring diagram Remote Junction Box PN 23550 00 dimensions Figure 3 6 Wiring 22 Reference Manual ...

Страница 29: ... of Clearance between Sensor and Walls Figure 4 1 4 2 Calibrating against a Standard Solution Calibration against a standard solution requires removing the sensor from process piping This calibration method is practical only if wall effects are absent or if the sensor can be calibrated in a container identical to the process piping Ideally the conductivity of the standard used should be close to t...

Страница 30: ... vessels See Figure 4 2 Calibration installation orientation Figure 4 2 3 Rinse the sensor with water 4 Immerse the rinsed sensor in the standard solution Use a good quality calibrated thermometer to measure the temperature of the standard solution The thermometer error should be less than 1 C Allow adequate time for the solution and sensor to reach thermal equilibrium If the sensor is being calib...

Страница 31: ...ductivity so that it is at least 5000 µS cm Turn off automatic temperature compensation in the transmitter This eliminates error in the cell constant Procedure 1 Connect the process and referee sensors in a series Keep tubing runs between the sensors short and adjust the sample flow to as high a rate as possible Short tubing runs and high flow ensure that the temperature of the liquid does not cha...

Страница 32: ...e the sample is hot corrosive or dirty making handling the waste stream from the referee sensor difficult 1 Take a sample of the process liquid Take the sample from a point as close to the process sensor as possible Be sure the sample is representative of what the sensor is measuring If possible adjust the conductivity of the process liquid so that it is near the midpoint of the operating range If...

Страница 33: ...rocess and referee instruments are accurate ideally to within 0 5 C 3 Place the sensors in the grab sample Wait until the readings are stable before starting the calibration 4 Adjust the reading from the process analyzer to match the conductivity measured by the referee sensor Calibration Rosemount 228 Sensor 27 ...

Страница 34: ...Calibration 28 Reference Manual ...

Страница 35: ...LIQUIDS Be sure the sensor has been cleaned of process liquid before handling Generally the only maintenance required is to keep the opening of the sensor clear of deposits Cleaning frequency is best determined by experience 5 2 Troubleshooting Resistance vs Temperature for Temperature Compensation PT 100 RTD Table 5 1 Temperature Resistance 10 C 50 F 103 9 Ω 20 C 68 F 107 8 Ω 25 C 77 F 109 7 Ω 30...

Страница 36: ...Maintaining and Troubleshooting 30 Reference Manual ...

Страница 37: ... in MNPT insertion 1 in FNPT conduit connec tion PEEK 33081 00 99SQ7091 A Adapter insert Tefzel for 23242 02 33081 00 Adapter insert PEEK for 23242 02 23242 03 Mounting adapter 1 1 2 in MNPT insertion 3 4 in FNPT conduit connec tion PEEK 33080 01 99SQ7091 B Adapter insert Tefzel for 23242 03 23277 01 Mounting adapter Foxboro PEEK 5 8 11 UNC 23277 01 99SQ7182 Mounting adapter Foxboro Tefzel 5 8 11 ...

Страница 38: ...Accessories 32 Reference Manual ...

Страница 39: ...epair and warranty inquiries please contact Rosemount Customer Care to obtain a Return Material Authorization RMA number Drain the sensor of fluids before shipping it back to Rosemount Return of Materials Rosemount 228 Sensor 33 ...

Страница 40: ...Return of Materials 34 Reference Manual ...

Страница 41: ...Return of Materials Rosemount 228 Sensor 35 ...

Страница 42: ...Return of Materials 36 Reference Manual ...

Страница 43: ...Return of Materials Rosemount 228 Sensor 37 ...

Страница 44: ...A Emerson Automation Solutions Emerson FZE Jebel Ali Free Zone Dubai United Arab Emirates P O Box 17033 T 971 4 811 8100 F 971 4 886 5465 liquid csc emerson com ASIA PACIFIC Emerson Automation Solutions 1 Pandan Crescent Singapore 128461 Singapore T 65 777 8211 F 65 777 0947 liquid csc emerson com Linkedin com company Emerson Automation Solutions twitter com rosemount_news Facebook com Rosemount y...

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