Sekonic ST-50M - Chapter 10. Sensor Calibration; Checking Calibration Status and Menu Navigation; Calibrating the Temperature Sensor

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10-1. Setting humidity alarm
• The one-point calibration is provided as an optional
setting in order to calibrate the sensor at the reference
value shown on both basic thermometer and basic hy-
grometer.
• The 2-point calibration is also provided to calibrate the
sensor at each reference value of low humidity and high
humidity using a saturated salt type humidity calibrator
or reference humidity generating bath. Use this function
to maintain a highly reliable accuracy of the sensor.

To check the calibration status
Turn ON the power swit ch while pressing the (
【▲】
) and
【
ENTER
】
keys together. The
『
MODE
』
,
『
CAL.
』
and
『
C0
』
indications will be on the display. This screen shows the
current status of the sensor calibration.
CAUTION
• To return to the normal measurement screen from the
“Sensor calibration status” screen, turn OFF (
【
】
) the
power switch.
• To cancel a calibration, turn OFF (
【
】
) the power
switch.
• The consumption of the batteries will rise during the
calibration.
The operation menu for sensor calibration is as folows:
Chapter 10. Sensor Calibration
10-2. Calibrating temperature sensor
①
Press the
【
ALARM
】
key while the “Sensor calibration
status” screen is displayed. The
『
1P
』
and
『
C1
』
indica-
tions will appear.
②
Press the
【
ENTER
】
key. The indication on the right side
will start blinking.
③
Use the
【▲】
or
【▼】
key to enter the temperature value
shown on the reference thermometer, then press the
【
ENTER
】
key. The entered value will stop blinking to
show the setting has been completed.
Turn ON the power while pressing
the【▲】 and 【ENTER 】 keys.
Sensor calibration status
Press 【ALARM 】 key
Temperature calibration
One-point humidity calibration
2-point humidity calibration
Sensor calibration Initialization
Press 【ALARM 】 key
Press 【ALARM 】 key
Press 【ALARM 】 key
Press 【ALARM 】 key