CSR-20 & CSR-40, September 1999
µ
P-D Controller
Menu Program Functions
4-37
Setting and Calibrating the USDA Sensors
1.
Insert all USDA sensors in an ice bath (see “Ice Bath
Preparation” above).
NOTE: The sensors must be completely
immersed in the ice bath without contacting the
walls of the ice bath container for 5 minutes.
2.
Press the SELECT key to enter menu (display shows
“MENU <--->”.
3.
Press DOWN key until display shows “MENU PRGRM”.
4.
Press the SELECT key to show “PRGRM <--->”.
5.
Press the UP or DOWN key until the display shows the
current “USDA” setting:
• “USDA OFF”
• “USDA ON”
6.
To change the current setting, press SELECT key.
“USDA” will begin to flash in the left display.
7.
Press the UP or DOWN key to scroll the right display to
the desired setting.
8.
To load the new setting, press the ENTER key. The dis-
play briefly shows “USDA LOAD”.
9.
When the USDA mode is turned ON, the display then
shows “USDA ON”. Each USDA sensor must now be
calibrated for accurate temperature recording. To cali-
brate the USDA1 sensor:
a.
Press the DOWN key to show “USDA1 ON” in the
display.
b.
To calibrate the USDA1 sensor, press the SELECT
key. “USDA1” will begin to flash in the left display.
c.
Press the UP or DOWN key to show “CAL” in the
right display.
d.
Press the ENTER key. The display briefly shows
“USDA1 CALIB”. The left display then shows
“USDA1” and the right display shows the sensor tem-
perature (“00.0 C”).
e.
When USDA1 sensor temperature is within 1.7 C [3
F] above or below 0 C (32 F), the left display
(“USDA1”) begins to flash.
f.
Observe the sensor temperature in the right display.
When the temperature has been stable for 5 minutes,
press the ENTER key. The display briefly shows
“USDA1 LOAD”, then “USDA1” and the sensor
temperature (“00.0 C”), and returns to the “USDA1
ON” display.
NOTE: The sensors should be in the ice bath
a total of 15 minutes or more to assure the
sensor temperature has bottomed out.
g.
Repeat steps 8a through 8f to calibrate the USDA2
and USDA3 sensors.
NOTE: Press and hold the SELECT key for 3 sec-
onds to return to the Standard Display.
PULP Sensor (Option)
Changing the PULP program screen from OFF to ON activates
the PULP (spare 5 sensor) temperature recording. PULP sen-
sor temperatures are recorded in the data logger memory.
The Pulp sensor should be connected to the controller and
located in the load as specified by the customer and/or ship-
ping company. When a PULP sensor is installed, the con-
troller will automatically detect the sensor and activate data
logging. The controller Program menu shows the “PULP” in
the left display and “AUTO” in the right display if data log-
ging is active. However, the PULP program screen MUST be
set to ON and the sensor MUST be calibrated to accurately
record temperature. Calibrate the sensor in an ice bath (see
“Ice Bath Preparation” under USDA Sensors in this chapter).
Setting and Calibrating the Pulp Sensor
1.
Insert Pulp sensor in an ice bath (see “Ice Bath
Preparation” above).
NOTE: The sensor must be completely immersed
in the ice bath without contacting the walls of the
ice bath container for 5 minutes.
2.
Press the SELECT key to enter menu (display shows
“MENU <--->”.
3.
Press the UP key until display shows “MENU PRGRM”.
4.
Press the SELECT key to show “PRGRM <--->”.
5.
Press the UP or DOWN key to show the current “PULP”
setting:
• “PULP OFF”
• “PULP ON”
6.
To change the current setting, press SELECT key.
“PULP” will begin to flash in the left display.
7.
Press the UP or DOWN key to scroll the right display to
the desired setting.
