Dickson THDx Посібник - Сторінка 6

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Dip Switch Set-up

To set-up the THDx for your specific application, you

might need to change some of the Dip Switches. Every

time you change a dip switch setting, you must push

the up arrow key on the keypad to activate the new dip

switch settings.

Off

Recording Time

The THDx has four different recording time options: 1

day, 7 day, 14 day and 31 day. Dip Switch #1 and #2

control the recording time.

7 day

1 day

14 day

31 day

NOTE: Remember to install correct chart to match cor-

responding switch setting.

°F/C

You can record in °F or °C with the THDx by using dip

switch #3.

°F

°C

Temperature Range

The THDx will record in two temperature ranges. Dip

switch #4 allows you to select the temperature range.

Wide Range

-20 to +120°F (-20 to +50°C) #4 off

Narrow Range

+40 to +110°F (+5 to +40°C) #4 on

Figure 5

#1 off

#2 off

#1 off

#2 on

#1 on

#2 off

#1 on

#2 on

#3 off

#3 on

RH/Dew Point

Dip switch #5 allows you to select whether RH or dew

point is recorded by the blue pen. (The red pen always

records temperature.)

Dew Point

NOTE: When the blue pen is recording dew point, the

reading indicates the temperature at which dew will

form, so you should use the temperature scale on the

chart to read dew point.

Display

The THDx has a dual display that shows both tempera-

ture and humidity (or temperature and dew point if dip

switch #5 is on). With dip switch #6 you can control the

position of the variables displayed.

Temperature on top

Temperature on bottom

Display On/Off

Dip switch #7 will allow you to turn the display on and

off.

Display On

Display Off

Keypad Lock

For security purposes it is possible to lock the key pad

with the use of dip switch #8. You may want to lock the

keypad to prevent unauthorized persons from using the

keypad to set alarms or change the calibration. (For more

information on use of the keypad see "Keypad Opera-

tions" on pg. 5.)

Keypad Unlocked

Keypad Locked

#5 off

#5 on

#6 off

#6 on

#7 off

#7 on

#8 off

#8 on