Xylem 3675 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: 3675 & 3676 1/4 DIN pH/ORP

CONTROLLER

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Global Water

800-876-1172 • globalw.com

The models 3675 & 3676 are precise instruments for the measurement and control of pH
and mV (ORP).

Two output relays are provided for ON/OFF control. The isolated 4-20 mA current output
covers the input control range of 0 to 14 pH and 0 to 1400 mV.

Both models are housed in a rugged 1/4 DIN plastic case. This allows the meters to fit
into standard panel cutouts, while providing industrial weatherproof and environmental
housings.

Table of Contents

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

II) The Meter................................................................................................................ 3

II) Temperature Compensation.................................................................................... 4

III) Rear Panel Connection............................................................................................ 4

IV) Mounting Procedure................................................................................................ 5

V) pH Calibration......................................................................................................... 5

VI) Isolation Voltage..................................................................................................... 6

VII) Output Load ............................................................................................................ 7

VIII) Controller Output Features ..................................................................................... 7

IX) Alarm Relay And Led Formats............................................................................... 7

X) Isolated 4-20 mA Output ........................................................................................ 8

XI) Trouble Shooting .................................................................................................... 8

XII) Warranty ................................................................................................................. 9

* Copyright © Global Water Instrumentation, Inc. 2006

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Global Water

800-876-1172 • globalw.com

I) Inspection

a) Your 3675 and/or 3676 1/4 DIN pH/ORP 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.

II) The Meter

a) LCD (Model 3675) Or LED ((Model 3676) Display
b) High Alarm Set Point Switch
c) High Alarm Set Point Led
d) High Alarm Set Point Control
e) pH Standardiation Tion Control
f) pH Slope Control
g) Low Alarm Set Point Switch
h) Low Alarm Set Point Led
i) Low Alarm Set Point Control

a) pH/mV Electrode BNC Input
b) ATC Probe Input
c) Isolated 4-20 mA Output
d) Reference Electrode Input
e) Earth Ground
f) AC Power Input
g) High Alarm Output Relay
h) Low Alarm Output Relay

a) pH/mV Input BNC Connector
b) Mounting Bracket
c) pH/mV Select Switch

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