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Instruction Manual

Alpha DO 500

2.5 Display & Keypad

2.5.1 Display Overview

The Liquid Crystal Display (LCD) of the Alpha DO 500 Transmitter has two
alpha-numerical displays (Upper and a Lower).

Upper display:

Measured dissolved oxygen reading (in % saturation or

ppm or mg/l) is displayed when the Transmitter is in normal operation
(measurement) mode.

Lower display:

Measured temperature value is displayed when the

Transmitter is in normal operation (measurement) mode. In Calibration
mode, calibration points are displayed here.

The two displays indicate function names, options & settings in Setup mode.
Refer ‘Appendix 2 – Abbreviations Used in LCD’ for more details.

The LCD also consists of various mode indicators, status annunciators and
unit of measurement indicators.

SETUP MEAS CAL

Upper Display

Lower Display

ERR

ATC

°C

READY

HOLD

ppm
mg/l

Mode Indicators

MEAS

Measurement mode

(Refer Section 3.1)

SETUP

Setup mode

(Refer Section 5)

CAL

Calibration mode

(Refer Section 4)

Status Annunciators

READY

Appears when the reading is stable

HOLD

Appears in Setup mode and Calibration mode to indicate that the relay function
is frozen

ATC

Appears when Automatic Temperature Compensation (ATC) is enabled.
Not visible when Manual Temperature Compensation (MTC) is enabled.
Flashes if the temperature probe is faulty in its ATC mode.

(Refer Section 5.4)

ERR

Appears when an error occurs

Buffer annunciator. Appears in calibration mode or viewing calibrated point

Electrode annunciator. Appears when viewing electrode properties or during
calibration error

Содержание Alpha DO 500

Страница 1: ...Alpha DO 500 Transmitter Dissolved Oxygen...

Страница 2: ...k ROSS Resolution SAOB SMART AVERAGING Smart CheK SMART STABILITY Stacked Star Navigator 21 Stat Face The Enhanced Lab ThermaSense Triode TRIUMpH Unbreakable pH Universal Access are trademarks of Ther...

Страница 3: ...the use of the transmitter please do not hesitate to contact the nearest Authorized Distributor Thermo Scientific will not accept any responsibility for damage or malfunction to the transmitter cause...

Страница 4: ...play Overview 9 2 5 2 Key Functions 10 3 Normal Operation 11 3 1 Measurement mode 11 3 2 Menu Overview 12 4 Calibration Mode 13 4 1 Entering Calibration Mode 13 4 2 Calibration in mg l or ppm of Oxyge...

Страница 5: ...ion 38 9 1 Warranty 38 9 2 Return of Goods 38 9 3 Guidelines for Returning Unit for Repair 38 9 4 Maintenance and Cleaning 38 10 Appendices 39 10 1 Appendix 1 Salinity vs Temperature 760mmHg 39 10 2 A...

Страница 6: ......

Страница 7: ...ns which are not or insufficiently answered in this instruction manual please contact your authorized supplier They will be glad to assist you 1 2 Intended Use Alpha DO 500 Transmitters are intended s...

Страница 8: ...o modifications to the Alpha DO 500 Transmitter are allowed The manufacturer supplier accepts no responsibility for damage caused by unauthorized modifications The risk is borne entirely by the user 1...

Страница 9: ...re not erased if power supply fails x Menu driven program that simplifies setup x Automatic temperature compensation ATC x Manual temperature compensation setting without the ATC probe with independen...

Страница 10: ...dissolved oxygen sensor with integrated or separate Pt100 temperature sensor x An appropriate measurement cable x An immersion flow or process assembly x A chart recorder Power Adaptor 12 to 24 V DC 4...

Страница 11: ...ow Connectors x SL2 12 to 24 V DC power x SL1 Dissolved Oxygen electrode Temperature probe connections wiring has to be done in the detachable connector SL1 SL2 Figure 1 Outer Side of Back PCBA SL1 Co...

Страница 12: ...Temperature Probe For Automatic Temperature Compensated ATC readings a 100 Pt RTD temperature probe 2 wire or 3 wire can be connected to the Transmitter 3 Wire Probe 1 Connect PT100 compensate wire t...

Страница 13: ...DO 500 7 2 4 Installation 2 4 1 Mechanical Dimensions ENT ESC 2 wire Dissolved Oxygen Transmitter Alpha DO 500 CAL 2 4 2 Wall Mount Pierce through holes at both sides 1 1 Cover the catch slots at bot...

Страница 14: ...asket Prepare panel cut out of 92 0 mm X 92 0 mm Remove back cover of DO Transmitter and slide it through panel cut out Attach catch to both sides of DO Transmitter Insert threaded rods through catch...

Страница 15: ...lso consists of various mode indicators status annunciators and unit of measurement indicators SETUP MEAS CAL Upper Display Lower Display ERR ATC C READY HOLD ppm mg l K Mode Indicators MEAS Measureme...

Страница 16: ...rm calibration in Calibration mode Select a group of settings in Setup mode Select parameters and increment decrement numerical values in Setup and Calibration modes When pressed continuously speed of...

Страница 17: ...cal display shows the measured dissolved oxygen value while the lower display shows the temperature value The indicator ppm or mg l at the upper right side of the display indicates the current measure...

Страница 18: ...2 3 2 Menu Overview MEAS C ATC READY ENT SETUP HOLD SETUP HOLD ENT SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD ENT ENT ENT ENT ENT ENT ENT SETUP HOLD CAL ENT ENT ENT ENT ENT ENT ENT ENT SETUP HOLD SET...

Страница 19: ...l ppm Calibration Mode See Section 4 3 See Section 4 4 CAL HOLD CAL To quit Calibration Mode ENT MEAS C ATC READY NOTES x To exit calibration mode at any time during calibration press and keys simult...

Страница 20: ...ement mode press CAL key to enter calibration mode as described in section 4 1 The LCD shows CAL Do Press ENT key to begin calibration 2 Select 1 point calibration The display shows 1Pt CAL If 2Pt CAL...

Страница 21: ...d be 10 of high point Calibration error occurs if measured value is 10 of high point during 1st point calibration or if measured value is not within 50 of high point during 2nd point calibration 2 CAL...

Страница 22: ...Transmitter allows adjusting up to r50 of the measured value Press ENT key to confirm the reading NOTE The transmitter does not accept the calibration and shows calibration error if the displayed meas...

Страница 23: ...D 1 ENT ENT ENT CAL HOLD 2 CAL HOLD 2 CAL HOLD 3 MEAS C ATC READY 4 CAL HOLD READY ERR 1 1 From measurement mode press CAL key to enter calibration mode as described in section 4 1 The LCD shows CAL D...

Страница 24: ...oxygen saturation Measured value should be 10 of high point Calibration error occurs if measured value is 10 of high point during 1st point calibration or if measured value is not within 50 of high p...

Страница 25: ...le Press ENT key to confirm the reading NOTE The transmitter does not accept the calibration and shows calibration error if the displayed measured value is not with 50 to 150 5 5 The calibration is co...

Страница 26: ...CD shows SETUP mode indicator and the first page of setup OFS offset settings Press or key to access other pages of the setup mode To exit from setup mode any time press and keys simultaneously escape...

Страница 27: ...ment for dissolved oxygen Press or key to select the desired unit of measurement or ppm or mg l Press ENT key to confirm your selection If ppm or mg l is selected for unit of measurement 3 Setting sal...

Страница 28: ...rement selected in the step 4 Press or key to set the required pressure value Press ENT key to confirm the value The Transmitter reverts to COF screen Press or key to access other setup screens or pre...

Страница 29: ...urement mode press ENT key to enter setup mode as described in section 5 1 The LCD shows the first screen of setup mode COFS Press or key to select offset settings screen OFS Press ENT key to access o...

Страница 30: ...500 24 If nO was selected The existing offset value if any is unaffected and the Transmitter reverts to OFS screen Press or key to access other setup screens or press and key simultaneously escape to...

Страница 31: ...mperature settings screen SEt C Press ENT key to access temperature settings SEt C 2 Enable disable ATC The upper display shows AtC The lower display shows the last configured ATC selection On or OFF...

Страница 32: ...temperature Press or key to adjust the upper display to desired process temperature Allowable range 0 0 to 100 0 C Press ENT key to confirm the process temperature 6 Setting calibration temperature Th...

Страница 33: ...tup mode as described in section 5 1 The LCD shows the first screen of setup mode COF Press or key to select range settings screen SEt rng Press ENT key to access range settings SEt rng 2 Select lower...

Страница 34: ...st screen of setup mode COF Press or key to select hold settings screen SEt HLd Press ENT key to access hold settings SEt HLd 2 The upper display shows HLd and the lower display shows the last configu...

Страница 35: ...COF Press or key to select out of range settings screen SEt org Press ENT key to access out of range settings SEt org 2 The upper display shows org and the lower display shows the last configured out...

Страница 36: ...Press ENT key to view calibration settings CAL 2 The buffer annunciator appears in the LCD The upper display shows the value of the high point at which the calibration has been carried out The corres...

Страница 37: ...enter setup mode as described in section 5 1 The LCD shows the first screen of setup mode COF Press or key to select viewing electrode condition screen ELE Press ENT key to view electrode condition EL...

Страница 38: ...display shows rSt The lower display shows CAL Press or key to select CAL to reset calibration values to factory defaults when confirmed by pressing ENT key FCt to reset all the parameters including ca...

Страница 39: ...s b Temperature Offset Adjustment 10 C Compensation Temperature Compensation Automatic or Manual 0 to 50 o C Pressure Compensation 0 74 to 3 00 BAR 550 mmHg to 2250 mmHg 225 cmHg 10 7 to 43 5 PSI Manu...

Страница 40: ...a DO 500 34 Other Power Input 12 to 24 VDC Dimensions W x H x D 96mm x 96mm x 66 mm Weight Estimated 210g Ambient Temp operating range 0 to 40 o C Maximum Relative Humidity 80 up to 31 o C decreasing...

Страница 41: ...length tinned open ended ECDOGEN S Special Purpose Epoxy body Low Dissolved Oxygen Electrode with PT100 range 0 03 20 ppm 5m cable length tinned open ended ECDOTPII S Set of 5 O rings membranes DOGEN...

Страница 42: ...ed oxygen electrode with Pt100 temperature sensor 0 20 ppm 10 foot cable length tinned open ended 35201 50 DO probe maintenance kit Includes 2 Teflon membranes 2 membrane O rings 1 body seal O ring 12...

Страница 43: ...ibrate Oscillating temperature readings a Electrical noise interference a Ensure shield wire is properly connected to pin 7 Slow response a Dirty Oily electrode a Clean electrode Blinking ATC a No tem...

Страница 44: ...fore returning items for any reason A Return Goods Authorization RGA form is available through our authorized distributor Please include data regarding the reason the items are to be returned For your...

Страница 45: ...0 10 4 9 8 9 2 10 50 0 11 3 10 7 10 1 9 6 9 0 11 51 8 11 0 10 5 9 9 9 4 8 8 12 53 6 10 7 10 3 9 7 9 2 8 6 13 55 4 10 5 10 1 9 5 9 0 8 5 14 57 2 10 3 9 9 9 3 8 8 8 3 15 59 0 10 1 9 7 9 1 8 6 8 1 16 60...

Страница 46: ...ter of mercury C C Calibration Temperature ELE Electrode condition FCt Factory defaults Hg Pressure in millimeter of mercury HI High limit HLd Hold LO Low limit OFS Offset Or Reading is over range Org...

Страница 47: ......

Страница 48: ...Fax 978 232 6031 Europe P O Box 254 3860 AG Nijkerk Wallerstraat 125K 3862 CN Nijkerk Netherlands Tel 31 033 2463887 Fax 31 033 2460832 Asia Pacific Blk 55 Ayer Rajah Crescent 04 16 24 Singapore 13994...

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