Test Products International 597C1 - Manual (Page 5)

4. Keypad Functions
Turns the instrument ON and OFF.
Freezes the displayed reading. When hold is active “DH” is
displayed.
Switches the displayed temperature reading between Celsius and
Fahrenheit.
Toggles the record feature ON and OFF. When record is active
“REC” is displayed.
Toggles the displayed temperature reading between ambient (Ta),
dew point (Td), and wet bulb (Tw).
When record is active, recall (RCL) is used to toggle between
maximum recorded values (MAX), minimum recorded values
(MIN), average recorded values (AVG), and turn on RS232
communication (RS-232).
3. Instrument Overview
Rubber Boot Protects the instrument from accidental damage
Display Large 2 parameter LCD display
Sensor Cage Houses and protects the sensor
Keypad Selects all available functions
Sensor Wand Handle for maneuvering sensor
RS-232 Output Jack Use with optional cable part number A500 to
stream data to a computer
Rubber Boot
Display
Sensor Cage
Sensor Wand
Keypad
RS232 Output
Jack
HOLD
°C
°F
REC
MODE
RCL