Xylem 378 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: 378 TEMPERATURE CONTROLLER

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Global Water

800-876-1172 • globalw.com

The model 378 is a high performance industrial grade digital indicating single set point
PROPORTIONAL /ON - OFF controller for use with type K, J ,T and E thermocouple.
Thermocouple gain and cold junction are automatically compensated by internal
electrode circuits.

An accurate 1 mV per display count analog is provided to interface the instrument with a
recorder, printer, and so on.

Table of Contents

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

II) Specifications.......................................................................................................... 3

III) Mounting procedure................................................................................................ 4

IV) Wiring diagram ....................................................................................................... 6

V) Analog voltage output............................................................................................. 6

VI) Controller action ..................................................................................................... 6

VII) Bandwidth adjust .................................................................................................... 7

VIII) Controller set and reset ........................................................................................... 7

IX) Relay and front panel LED format.......................................................................... 8

X) Thermocouple burn out protection.......................................................................... 8

XI) Trouble Shooting .................................................................................................... 9

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

* Copyright © Global Water Instr umentation, Inc. 2006

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Global Water

800-876-1172 • globalw.com

I) Inspection

a) Your 378 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.

II) Specifications

Model Type Range Resolution Accuracy
378KC K 0 to 1000°C 1°C ± 0.50% ± 1 count
378KF K 0 to 1999°F 1°F ± 0.50% ± 1 count
378JC J 0 to 550°C 1°C ± 0.40% ± 1 count
378JF J 0 to 1000°F 1°F ± 0.40% ± 1 count

On/Off control
Hysteresis: °C model 6°C (± 3°C)

°F model 10°F (± 5°F)

Proportional control

Proportional band Adjustable from on/off to 100°C or 100°F with built in

hysteresis
Cycle time 20 ± 3 second
Reset Manual adjust

General

Operating temp. 0 to 40
Analog output 1 mV/count, ± 0.30% of span ± 1 mV
T/C burnout Upscale
Output relay 8 A at 115 VAC, 4A at 230 VAC, resistive load
Power source 115/230VAC , ± 10% 50/60 Hz
Dimension 96mm X 48mm X 105mm
Weight 0.38 kgs

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