Thermo Fisher Scientific Alpha RES 1000 - Manual (Page 33)

Operating Instructions Alpha RES 1000
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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