26
New Brunswick Scientific
User’s Guide
To reactivate the temperature controller, press the
∆
(up)
KEY
until the desired
temperature setpoint is displayed.
#
NOTE:
You can start or stop the shaker by pressing the
START/STOP KEY
. When
starting, the unit will automatically return to the last function and setting.
The alarm will be activated until the speed is within 5 rpm or the
temperature is within 1.0
°
C of the setpoint. The alarm will not sound when
the shaker is accelerating or the temperature is changing to satisfy a new
setpoint.
7.3
Temperature Offset Calibration
The temperature probe and the temperature controller are calibrated together at the
factory. The temperature probe measures the temperature of the air at the probe’s
location, near the heat exchanger return vent. The controller uses the probe input to
adjust air temperature, up or down, to match the temperature setpoint.
Depending on various conditions within the chamber, such as flask placement and size,
the heat produced by growing organisms, heat losses due to liquid evaporation from
flasks, etc., the display temperature may differ from temperatures within the flasks
themselves.
If you wish to have the temperature display (“Indicated Temperature”) match the
temperature at a given point, or match the average of a series of points within the
chamber (“Actual Temperature”), proceed as follows:
1. Let the unit equilibrate at or near the desired temperature. Record the Indicated
Temperature.
2. Record the Actual Temperature.
3. Calculate the temperature correction value: Actual Temperature – Indicated
Temperature = Temperature Correction Value.
4. Press
the
SELECT KEY
until the function
°
C INDICATOR
illuminates.
5. Simultaneously press the
∆
(up) and
∇
(down)
KEYS
. The
SET
and
MAINT
INDICATORS
will light.
6. While
the
SET
and
MAINT
INDICATORS
are illuminated, use the
∆
or
∇
KEY
to set the
display to the calculated Temperature Correction Value.
#
NOTE:
The
°C
light will pulse rapidly for a short duration to indicate it is not
operating in the factory default mode. It will pulse for a longer duration and
less rapidly (with a frequency of approximately one second) to indicate
temperature is more than one degree above or below setpoint.
Summary of Contents for innOva 4200
Page 2: ...2 New Brunswick Scientific User s Guide...
Page 57: ...57 Innova 4200 M1233 0053 User s Guide Figure 21 Electrical Schematic Quadrant A...
Page 58: ...58 New Brunswick Scientific User s Guide Figure 22 Electrical Schematic Quadrant B...
Page 59: ...59 Innova 4200 M1233 0053 User s Guide Figure 23 Electrical Schematic Quadrant C...
Page 60: ...60 New Brunswick Scientific User s Guide Figure 24 Electrical Schematic Quadrant D...
Page 66: ...66 New Brunswick Scientific User s Guide Figure 30 100V Power Schematic Overview...
Page 67: ...67 Innova 4200 M1233 0053 User s Guide Figure 31 100V Power Schematic Quadrant A...
Page 68: ...68 New Brunswick Scientific User s Guide Figure 32 100V Power Schematic Quadrant B...
Page 69: ...69 Innova 4200 M1233 0053 User s Guide Figure 33 100V Power Schematic Quadrant C...
Page 70: ...70 New Brunswick Scientific User s Guide Figure 34 100V Power Schematic Quadrant D...
