Xylem 6308DT User Manual

Global Water

800-876-1172 • globalw.com

Global Water

Instrumentation, Inc.

11390 Amalgam Way

Gold River, CA 95670

T: 800-876-1172

Int’l: [phone], F: [phone]

PRODUCT NAME: 6308DT MICROCOMPUTER BASED

DO/ Temperature CONTROLLER

- 1 -

Global Water

800-876-1172 • globalw.com

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

* Copyright © Global Water Instrumentation, Inc. 2006

- 2 -

Global Water

800-876-1172 • globalw.com

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.

- 3 -

Global Water

800-876-1172 • globalw.com

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.

- 4 -

Global Water

800-876-1172 • globalw.com

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.

(c) In Calibration/ Setting mode, pressing this key for 2 seconds will

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.

- 5 -

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

Global Water

800-876-1172 • globalw.com

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.

- 6 -

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

Global Water

800-876-1172 • globalw.com

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.

- 7 -