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Thermo Scientific AquaSensors

™

 AnalogPlus

™

 Dissolved Oxygen Sensor (ppm) User Guide

 

 

6

    

                                                                         

 

2.

 

PRODUCT DESCRIPTION 

2.1.

 

Sensor Description 

The Thermo Scientific AquaSensors 1- inch Dissolved Oxygen sensor uses the amperometric 
measurement technique to maximize lifetime in continuous industrial applications.  The sensor is easily 

maintained and reconditioned by replacing the convenient membrane cap and electrolyte.   The wires in the 
sensor cable are color coded to allow for quick and easy installation into the AV88 Universal Analyzer.  

 

 

 

 

 

Yellow Wire    (Temperature) 
Black Wire     (Ground) 
Red Wire       (Sense) 
Green Wire    (Drive) 
Blue Wire       (+V) 
White Wire     (-V) 
Drain/Shield   (Earth)

 

The wires in the sensor cable are color coded to match the 

terminal strip connection within the AV88 Universal 

Analyzer Controller. 

Figure 2.2: D.O. sensor hook-up 

The sensor body has 1 inch NPT threads for the following 
mounting options: 

 

¾

 

Pipe tee assembly 

¾

 

Immersion mount assembly 

¾

 

Union mount assembly 

Figure 2.1: 1.0 inch D.O. Sensor  

Содержание Thermo Scientific AquaSensors AnalogPlus

Страница 1: ...Thermo Scientific AquaSensors AnalogPlus Dissolved Oxygen Sensor User Guide ...

Страница 2: ... only in the manner specified Only a skilled trained or authorized person should carry out installation setup and operation of the sensor system Before using the sensor make sure that the sensor cable is connected as specified Failure to do so may result in permanent damage to the sensor or controller Protection against electric shock will be achieved only by observance of the corresponding instal...

Страница 3: ...ERSION MOUNT WITH HAND RAIL SWIVEL POSITIONING 12 3 5 IMMERSION MOUNT WITH BALL FLOAT 14 3 6 PIPE TEE MOUNTING 17 3 7 UNION MOUNTING 19 4 DISSOLVED OXYGEN SENSOR MAINTENANCE 21 4 1 CLEANING THE DISSOLVED OXYGEN SENSOR HEAD 21 4 2 D O SENSOR REFURBISHMENT REPLACING THE MEMBRANE CAP AND ELECTROLYTE 22 4 3 DISSOLVED OXYGEN SENSOR TROUBLESHOOTING 23 5 DISSOLVED OXYGEN PART NUMBERS 24 5 1 D O SENSOR AV...

Страница 4: ...for damage that may arise if information in this manual is not followed Therefore the operating instructions and specifications must be read and understood by all persons involved in installation and operation of this equipment This manual identifies safety instructions and additional information by means of the following symbols This symbol draws attention to safety instructions and warnings of p...

Страница 5: ...r mounting hardware analyzer electronics and cabling Observing the prescribed environmental and operational conditions Observing chemical compatibility with all wetted materials 1 3 Safety Instructions The AnalogPlus 1 0 inch Dissolved Oxygen sensor should be installed and operated only by personnel familiar with the sensor and qualified for such work A defective sensor should be returned to Therm...

Страница 6: ...p and electrolyte The wires in the sensor cable are color coded to allow for quick and easy installation into the AV88 Universal Analyzer Yellow Wire Temperature Black Wire Ground Red Wire Sense Green Wire Drive Blue Wire V White Wire V Drain Shield Earth The wires in the sensor cable are color coded to match the terminal strip connection within the AV88 Universal Analyzer Controller Figure 2 2 D ...

Страница 7: ...the process prior to calibration The AV88 analyzer supports both 1 point sample calibration and air calibration The 1 point sample calibration should be done with a measured DO reading that is as high up the scale as possible ideally 8 or 9 ppm With this calibration the current sensor reading can be set to a known value With the Air calibration the sensor is held in air and with atmospheric pressu...

Страница 8: ...rature Black Wire Ground Red Wire Sense Green Wire Drive Blue Wire V White Wire V Drain Shield Earth Maximum Transmission Distance 300 ft 914 m The sensor will arrive with a protective cap that keeps the sensor membrane hydrated For short term storage put several drops of Thermo Scientific AquaSensors D O electrolyte P N RDOK1 on the absorbent material in the protective cap and replace the cap on ...

Страница 9: ...he AV88 as shown on the AV88 wiring chart 3 1 2 Indirect Connection Using a Junction Box 1 Insert the sensor cable and the interconnect cable through a watertight cord grip into the junction box that has a terminal strip designed to make the proper connections 2 Connect both the sensor cable wires and the interconnect wires to the terminal strip 3 Insert the interconnect cable through a watertight...

Страница 10: ... whenever the sensor is removed from service If the sensor does not calibrate refer to Section 4 to review maintenance refurbishment and troubleshooting options The sensor should be positioned at least 15 up from horizontal This will insure that entrained air does not form a pocket around the sensor head Dimensions IN mm DO NOT USE PIPE SEALANT Pipe sealants may not provide adequate sealing or may...

Страница 11: ... laid down on the walkway The pole protects the sensor cable from damage Junction Box for sensor and extension cable wiring to AV88 Universal Analyzer Standard 7 foot PVC pipe extension to place sensor into tank Pipe protects sensor cable from damage Adapter to connect the sensor to the extension pipe This may or may not be needed depending on the type of sensor AnalogPlus sensors are threaded on ...

Страница 12: ...o place insuring that the sensor position will remain fixed in the tank Different pole lengths can be configured on request or easily modified on site To remove the sensor the swivel is unlocked and the pole swings up as shown in the illustration on the next page The pole protects the sensor cable from damage The junction box is used to connect the sensor cable in the pipe and to take an extension...

Страница 13: ...Plus Dissolved Oxygen Sensor ppm User Guide 13 The swivel hardware makes it easy to access the sensor head for service cleaning and calibration as shown below Figure 3 5 Immersion Mount Hardware with Hand Rail Swivel Positioning Retracted ...

Страница 14: ...at the end of the extension pipe to maintain the proper positioning of the float in the water To remove the sensor the swivel is unlocked and the pole swings up as shown in the illustration on the next page The pole protects the sensor cable from damage The junction box is used to connect the sensor cable in the pipe and to take an extension cable to the AV88 analyzer When automatic cleaning of th...

Страница 15: ...lus Dissolved Oxygen Sensor ppm User Guide 15 The swivel hardware makes it easy to access the sensor head and the ball float for service cleaning and calibration as shown below Figure 3 7 Immersion Mount Hardware with Ball Float Retracted ...

Страница 16: ...d in tap water for at least 1 hour prior to calibration c Calibrate the Dissolved Oxygen sensor as explained in the AV88 manual Subsequent calibrations should be scheduled based on process demands d If measurement response time is slow or if the sensor will not calibrate refer to Section 4 for maintenance refurbishment and troubleshooting suggestions 3 Mount Secure the pipe assembly so that the se...

Страница 17: ...mally available pipe tees vary widely in construction dimensions CPVC pipe tees are most generally available with schedule 80 walls Stainless steel tees have thinner walls that change the final position of the sensor Common mounting with a CPVC pipe tee is shown Dimensions IN mm Figure 3 8 Schedule 80 PVC Tee ...

Страница 18: ...move the protective cap from the sensor head and make sure moisture is present and the membrane has not dried out If the protective cap is dry the sensor should be hydrated in tap water for at least 1 hour prior to calibration c Calibrate the Dissolved Oxygen sensor as explained in the AV88 manual Subsequent calibrations should be scheduled based on process demands d If measurement response time i...

Страница 19: ...pact of particulate matter on the sensor head and improve sensor life Union Mounting in a T configuration is also available Union Mount Advantages 9 Optimal positioning of sensing surface 9 Trouble free installation 9 Quick disconnect 9 No cable twisting during installation or removal 9 Easy maintenance Water Flow Union Hardware in T Configuration Part Number MH1042 Union Hardware in Y Configurati...

Страница 20: ...m the sensor head and make sure moisture is present and the membrane has not dried out If the protective cap is dry the sensor should be hydrated in tap water for at least 1 hour prior to calibration c Calibrate the Dissolved Oxygen sensor as explained in the AV88 manual Subsequent calibrations should be scheduled based on process demands d If measurement response time is slow or if the sensor wil...

Страница 21: ...Remove sensor from service and rinse or spray it with warm water to remove heavy deposits 4 1 2 2 Soak the sensor in a container of warm detergent water for one hour Do not use detergents that contain oily skin softeners like aloe or lanolin that can coat the membrane Alconox and Dawn dishwashing liquid work well 4 1 2 3 Rinse the membrane end with clean warm water 4 1 2 4 If deposits are still pr...

Страница 22: ...t counterclockwise Dispose of the old membrane cap and electrolyte using an approved method 4 2 3 Slowly fill the new membrane cap with D O electrolyte and gently agitate to remove trapped bubbles 4 2 4 Place the sensor head into the filled membrane cap Install slowly Screwing on the new membrane cap quickly may cause pressurization of the membrane 4 2 5 Slowly screw the new filled membrane cap cl...

Страница 23: ...ot corroded or loose 4 Make sure all sensor wires are connected to the correct places on the analyzer terminal block Depending on the analyzer 5 The sensor should be immersed in a solution of known D O value 6 Establish that the analyzer electronics are working correctly by verifying operation with another sensor Note Any new sensor that has been in storage for more than a few days should be soake...

Страница 24: ... AV88FB0A1 Mounting Hardware Description Part Number 1 5 Union T Configuration Stainless Steel CPVC MH3041 MH3042 1 5 Union Y Configuration Stainless Steel CPVC MH3041 Y MH3042 Y 1 Tee Schedule 40 Stainless Steel Schedule 80 CPVC MH3011 MH3022 Immersion Assembly 7 ft PVC extension with junction box 1 Sensors MH3083 Immersion Assembly w Swivel Rail Mounting 7 ft PVC extension with junction box 1 Se...

Страница 25: ... with pre stretched membrane Process Flat cap with pre stretched membrane Flat cap o ring with pre stretched membrane Protected cap with pre stretched membrane and protective mask Process Flat cap with pre stretched membrane and protective mask Flat cap o ring with pre stretched membrane and protective mask DMR03 DMR08 DMR04 DMR03M DMR08M DMR04M Membrane Caps ppb Protected Cap Flat Cap Face Seal C...

Страница 26: ...ck of appropriate maintenance alteration accident or improper application or installation 2 Damage caused by any repair or attempted repair not authorized by Thermo Fisher Scientific 3 Any product not used in accordance with the instructions furnished by Thermo Fisher Scientific 4 Damage caused by acts of God natural disaster acts of war declared or undeclared acts of terrorism work actions or act...

Страница 27: ...ms are not valid unless accepted in writing Sales taxes shall be included on the invoice unless a valid tax exemption certificate is supplied Return Material Authorization Contact Thermo Fisher Scientific Customer Service for a Return Material Authorization RMA number Items returned without an RMA number will be rejected All returned merchandise must be in unused resalable condition and must not b...

Страница 28: ...258473 001 Rev A 01 09 ...

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