Operating Instructions
Alpha RES 1000
26
Appendix 2 – Conductivity / Resistivity of Various Aqueous Solutions at 25
o
C
Conductivity Resistivity
Pure Water
0.05
uS/cm
18
M
Ω
-cm
Power Plant Boiler Water
0.05 - 1
uS/cm
1 - 18
M
Ω
-cm
Distilled Water
0.5
uS/cm
2
M
Ω
-cm
De-ionized Water
0.1 - 10
uS/cm
0.1 - 10
M
Ω
-cm
De-mineralised Water
1 - 80
uS/cm
0.01 - 1
M
Ω
-cm
Mountain Water
10
uS/cm
0.1
M
Ω
-cm
Drinking Water
0.5 - 1
mS/cm
1 - 2
M
Ω
-cm
Waste-water
0.9 - 9
mS/cm
0.1 - 1
M
Ω
-cm
Potable Water Maximum
1.5
mS/cm
0.7
M
Ω
-cm
Brackish Water
1 - 80
mS/cm
0.01 - 1
M
Ω
-cm
Industrial Process Water
7 - 140
mS/cm
rarely stated
Ocean Water
53
mS/cm
rarely stated
Appendix 3 - Simple Explanation on the Function of Hysteresis
SP1 Set to LO
1.00
1.20
1
19.
8.80
00
RELAY OFF
HY
The controller relay activates when the set-point is reached. In the reverse direction, it does not de-activate
when the value reaches the set-point. Instead, it continues to be active till the value reaches the amount set by
the Hysteresis band.
STERESIS BAND
FORWARD DIRECTION
REVERSE DIRECTION
SP1
REL
SP2
AY ON
SP2 Set to HI
m
Ω
Summary of Contents for Alpha RES 1000
Page 1: ...Alpha RES 1000 Controller Transmitter Resistivity...
Page 33: ......
