2
CONTENTS
Page
I. INITIAL INSPECTION
3
MOUNTING PROCEDURE
3
II. GENERAL INTRODUCTION
4
III. USING THE pH 550
5
A.
FRONT(KEYPAD) PANEL
5
B.
MAIN DISPLAY MODE
6
C.
REAR CONNECTORS
7
D.
TURNING ON/OFF THE INSTRUMENT
9
IV. MODEL MODES
10
A.
MAIN DISPLAY MODE
10
B.
CALIBRATION/SETTING MODE
10
How to use the keys
11
a.
CHECK PASSWORD page
12
b.
USER SETTING page
12
c.
pH CALIBRATION page
13
Step by step pH Calibration
14
d.
pH CONTROL SETTING page
15
e.
pH CURRENT SETTING page
16
f.
TEMP. CURRENT SETTING page
16
g.
TEMP. CONTROL SETTING page
17
V. CONTROLLING THE RELAYS
18
A. ISOLATION VOLTAGE
18
B. OUTPUT LOAD
18
C. RELAY ACTION,SET POINT &HYSTERESIS
18
D. pH RELAYS
19
E.
TEMPERATURE RELAY
20
VI.
4-20 mA OUTPUT
20
A.
ISOLATION VOLTAGE
20
B.
OUTPUT LOAD
20
C.
pH & TEMP LINEAR OUTPUT
20
D.
pH ANTILOG OUTPUT
21
VII. RS485 INTERFACE OPERATION
22
A.
INTRODUCTTION
22
B.
PREPARING THE METER
22
VIII.ERROR DISPLAYS AND TROUBLESHOOTING
23
IX.
pH BUFFERS
24
X.
SPECIFICATIONS
25
