Thermo Fisher Scientific Alpha pH 1000 User Manual
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1) Follow directions in 7.3.1 to enter Control Relay mode.
2) Press the ENTER key. Scroll with the
▲ or ▼ key until the
upper display shows the hysteresis (dead band) value and the
lower display shows “HYS”.
3) Press the
▲ or ▼ keys to enter your hysteresis value for Set
point 1 (Set point 2). Your controller will activate at the value
you select.
4) Press the ENTER key to confirm your selection.
5) Proceed to 7.3.5 step 3, or return to Measurement mode by pressing the
▲ and ▼ keys
simultaneously (escape).
NOTE: Please refer to Appendix 3 for a graphical representation of the Hysteresis.
7.3.5
Setting an on-delay time lag
You can set a time delay for each relay, which stops the relay from switching on the moment the
set point is exceeded. This controller lets you set a 0 to 2000 second time delay before the relay
activates.
1) Follow directions in 7.3.1 to enter Control Relay mode.
2) Press the ENTER key. Scroll with the
▲ or ▼ key until the
upper display shows “on delay” time and the lower display
shows “On.d”.
3) Press the
▲ or ▼ key to enter on-delay time for Set point 1
(Set point 2). The controller will delay activation for the number
of seconds (0 to 2000) you select.
4) Press the ENTER key to confirm your selection.
5) Proceed to 7.3.6 step 3, or return to Measurement mode by pressing the
▲ and ▼ keys
simultaneously (escape).
7.3.6
Setting an off-delay time lag
You can set a time delay for each relay, which stops the relay from switching off the moment the
value reached the set point and hysteresis. This controller lets you set a 0 to 2000 second time
delay before your relay deactivates.
1) Follow directions in 7.3.1 to enter Control Relay mode.
2) Press the ENTER key. Scroll with the
▲ or ▼ key until the
upper display shows “off delay” time and the lower display
shows “OF.d”.
3) Press the
▲ or ▼ key to enter on-delay time for Set point 1
(Set point 2) Your controller will delay activation for the number
of seconds (0 to 2000) you select.
4) Press the ENTER key to confirm your selection.
5) Continue
with
Advanced
Set-up mode procedures, or return to Measurement mode by
pressing the
▲ and ▼ keys simultaneously (escape).
0.50
SETUP
HOLD
Hys
pH
0
SETUP
HOLD
0
SETUP
HOLD