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CONTENTS
Page
I. GENERAL INTRODUCTION 3
II. INITIAL INSPECTION and ASSEMBLY 4
MOUNTING PROCEDURES 4
III.USING THE JENCO MODEL 6308 PT 5
A. FRONT(KEYPAD) PANEL 5
B. MAIN DISPLAY MODE 6
C. REAR CONNECTORS 8
D. TURNING ON/OFF THE INSTRUMENT 9
IV. MODEL 6308 PDT MODES 10
A. MAIN DISPLAY MODE
B. CALIBRATION/SETTING MODE 11
a. CHECK PASSWORD page 12
b. USER SETTING page 12
c. pH CALIBRATION page 13
d. pH CONTROL SETTING page 15
e. CURRENT SETTING page 16
f. TEMP. CONTROL SETTING page 16
V. CONTROLLING THE RELAYS 17
A. ISOLATION VOLTAGE 17
B. OUTPUT LOAD 17
C. RELAY ACTION,SET POINT &HYSTERESIS 18
D. pH RELAYS 19
VI. 4-20 mA OUTPUT 19
A. ISOLATION VOLTAGE 19
B. OUTPUT LOAD 19
C. pH LINEAR OUTPUT 20
D. pH ANTILOG OUTPUT 21
VII. RS485 INTERFACE OPERATION 22
A. INSTRUCTION 22
B. PREPARING THE METER 22
VIII.ERROR DISPLAYS AND TROUBLESHOOTING 23
IX. pH BUFFERS 25
X. SPECIFICATIONS 26
XI. WARRANTY 27
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