Xylem 6308DT User Manual

Global Water

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Global Water

Instrumentation, Inc.

11390 Amalgam Way

Gold River, CA 95670

T: 800-876-1172

Int’l: (916) 638-3429, F: (916) 638-3270

PRODUCT NAME: 6308DT MICROCOMPUTER BASED

DO/ Temperature CONTROLLER

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Table of Contents

I) Inspection................................................................................................................ 3

II) General Introduction ............................................................................................... 3

III) Mounting Procedure................................................................................................ 3

IV) Using The Global Water Model 6308DT ............................................................... 5

V) Model 6308DT Modes............................................................................................ 9

VI) Controlling The Relays......................................................................................... 15

VII) 4 - 20 mA Output .................................................................................................. 18

VIII) Rs485 Interface Operation .................................................................................... 19

IX) Error Displays And Troubleshooting.................................................................... 19

X) Specifications........................................................................................................ 20

XI) Warranty ............................................................................................................... 21

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I) Inspection

a) Your 6308DT MICROCOMPUTER BASED DO/ TEMPERATURE

CONTROLLER unit was carefully inspected and certified by our Quality Assurance Team before shipping. If any damage has occurred during shipping, please notify Global Water Instrumentation, Inc. and file a claim with the carrier involved.

I) General Introduction

a) The Global Water Model 6308DT (DO and Temperature) System, is a rugged

microprocessor based instrument assembled in a watertight ¼ DIN case, designed for use in laboratories and process control applications.

The model 6308DT microprocessor allows the user to easily recalibrate the parameters for the probes. The DO system requires only a single calibration, regardless of which dissolved oxygen display you use. The microprocessor also performs a self-diagnostic routine every time you turn on the unit providing you with basic information about the stability of the instrument.

The system simultaneously displays DO, Temperature, Relay status, and current output in one LCD graphic screen. The LCD also includes a backlight for badly lit environments. This system uses a "polygraphic clark" membrane for the DO and a precise thermistor for temperature, providing you with accurate readings for all your measurements.

The model 6308DT is equipped with 5 relays (2 active Low and 2 active High relays for DO and one programmable high or low relay for temperature); all relays are hysteresis driven and configurable to CENTER or EDGE mode. The system also has an isolated 4-20mA analog output, offset and span configurable for the DO display.

The model 6308DT comes with a RS485 interface that can easily let the user log all data (from multiple models 6308 or 6309) with an IBM© PC/AT compatible computer.

II) Mounting Procedure

a) Make a cutout on any panel, with a thickness of 1/16 in. (1.5 mm) to 3/8 in.

(9.5mm).

b) Remove the mounting assembly from the controller and insert the controller into

the cutout.

c) Replace the mounting bracket assembly onto the controller and secure the

controller to the mounting panel.

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Warning: If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

d) Cleaning the instrument :

1. Be sure to remove the power before attempting to clean the meter.

2. Use a lint free cloth and clean water or neutral detergent.

3. Wipe the outer surface of the instrument only.

4. Wipe dry the instrument before power again.

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III) Using the Global Water Model 6308DT

a) Front Panel

1. The [MODE/-] key. (a) In Normal mode, this key will change the DO display to DO % or

DO ppm.

(b) In Calibration / Setting mode, this key will move to the next digit of

the current active parameter.

move you back to the previous parameter.

2. The [CAL/VIEW] key. (a) In Normal mode, the display will go to Calibration / Setting mode if

you press this key for about 2 seconds

(b) During Calibration/Setting mode, this key will switch to the next

available Calibration/Setting page. Pressing this key at the last Calibration / Setting page will return the user to the Normal mode.

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3. The [ ] UP key. During Calibration/Setting mode, this key will

increment the current blinking digit of the active parameter.

4. The [ ] DOWN key. During Calibration/Setting mode, this key will

decrement the blinking digit of the active parameter.

5. The [ ] ENTER key. During Calibration/Setting mode, this key will

save the current modified parameter and move to the next parameter on the page. If the parameter is the last one in the page then it will move to first parameter on the next available page.

6. The [ ] LIGHT key. This key will turn on or turn off the backlight of

the LCD. The backlight will automatically turn off if there is no key activity for about two minutes.

7. LCD screen.

b) NORMAL MODE DISPLAY

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1. S:, P: - Salinity and Pressure settings.

2. CURRENT OUT - this will display the actual reading of the 4-20 mA

output. At POWER-ON, this will show "OFF." for about 3 seconds before going to main display mode. After exiting the Calibration /Setting pages, a "FROZEN" message will be displayed for about 3 seconds if the unit is not password locked.

3. annunciator - This will be displayed if Calibration/Setting pages are

password locked meaning the user cannot change the values unless the correct 4 digit number has been entered.

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4. H1 annunciator - this is the status of DO Relay 1. If this is displayed, then

the relay is ON.

5. H2 annunciator - this is the status of DO Relay 2. If this is displayed, then

the relay is ON.

6. L3 annunciator - this is the status of DO Relay 3, if this is displayed the

Relay is ON.

7. L4 annunciator - this is the status of DO Relay 4. If this is displayed, then

the Relay is ON.

8. H5 or L5 annunciator - this is the status of the Temperature Relay 5, if this

is displayed then the Relay is ON. H5 means the relay action is HIGH while L5 means the relay action LOW.

9. Dissolved oxygen (% or ppm) display.

10. Temperature display.

c) REAR CONNECTORS

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Before wiring the probes, relays, analog output, RS485, and power cord be sure that you are connecting to the right terminal as shown above. Remember that the unit is ON once the user plugs in the power cord to an AC power supply.

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