SATO KEIRYOKI PC-7900GT Instruction Manual

Instruction Manual
Digital Thermohygrometer w/Heat Stress Monitor
Model PC-7900GT
Thank you for purchasing the digital thermohygrometer with heat stress monitor model PC-7900GT.
- This product is designed to measure temperature and humidity of atmosphere and indicate the heat
stress exposure with 5 steps. Do not use it for other purposes.
- This heat stress monitor is applicable for household use only. The index is just for the reference to
control air-condition or manage health condition.
- Read this manual thoroughly before use and keep it in a safe place for your future references.
Names of section
 Front view
LCD display for
thermohygrometer
LCD display
for clock

Replacing Batteries

When the battery power becomes low, the display dims and measurement errors occur. Replace all
two batteries to new ones.
* The low battery mark ( ) will appear on the LCD when replacement of batteries is required.
(1) Remove the battery compartment lid by sliding it downward.
(2) Pull the pickup string to get out the battery compartment.
Be careful not to break the string with a strong pull.
(3) Remove the used batteries and
load two new AAA batteries with
 
correct polarity (+) (-) as
instructed in the battery
compartment.
(4) Set in the battery compartment and
close the lid.
Dispose of used batteries according to your local waste disposal regulations for environmental
conservation.
 Rear view
RESET key

(system reset)

MAX key
MIN key
SET key
LCD display for
Heat stress monitor
(1) (2)
pickup string
Battery
compartment lid
1
System Reset
Use the reset key to return correct indication. This key is useful when
the temperature or humidity values is inaccurately indicated by inference
of the electrostatic action or when the batteries are replacement.
In this case, data are erased and the time displays as 00:00.
Set the time with the following procedure.
Press the RESET key with a thin stick like a toothpick.

How to Use

• Insert the batteries at the start.
Temperature (ºC)
Battery
compartment lid
Low battery mark
(If this mark appears, immediately replace the batteries)
 Setting Time
Press the SET key for three sec. to change to the time setting mode.
"24H" brinks. Press the MAX or MIN key to select
(1)
24H or 12H display.
Press the SET key and "hour" starts flashing. Press the MAX
(2)
(numbers up) or MIN (numbers down) key to set the hours.
(3) Press the SET key again and minute starts flashing. Press the
MAX (numbers up) or MIN (numbers down) key to set the
minute.
Battery
compartment (4) Press the SET key and setting of the time is now complete.
Note: If no key is pressed for one minute, the setting of the time automatically exits.
Humidity (%)
Time
2
toothpick
Heat stress monitor
(indicates the level with 5 steps)