Page
ST610B User Handbook
2
Operation
tC
.
r
tC
.
S
tC
.
n
tC
.
K
Use the On/Off button to turn the ST610B
on (or off). When turned on the ST610B
performs a display test by briefly turning
on all of the display segments.
Next displayed is the thermocouple type to which the ST610B is set. This
thermocouple type setting should match the type of thermocouple connected
to the ST610B and can be R, S, K or N type.
‘R’ type
thermo-
couple
‘S’ type
thermo-
couple
‘K’ type
thermo-
couple
‘N’ type
thermo-
couple
Operation
The ST610B turns itself off if no buttons have been pressed for 15 minutes
(auto power-off).
This feature is disabled in MAX mode.
On / Off
Auto Power Off
Changing the Thermocouple Type
To change the thermocouple type setting turn the ST610B off.
Now press the “Tc” button. Keep the “Tc” button held down and turn on
the ST610B. Release the “Tc” button when the thermocouple type dis-
play is shown. Select the required thermocouple type with either the
“0.1°” button or the “1°” button. Confirm the selection with the “HOLD”
button. The ST610B will now store the required thermocouple type and
turn itself off. When next turned on the selected thermocouple type will
be shown.
It is important that the thermocouple type selected be the
same as the type of thermocouple actually in use else large errors
will be present in the displayed temperature.
ST610B User Handbook
Page
3
Units Selection
The required display units (Centigrade (°C), Fahrenheit (°F) or Kelvin (K))
can be selected with the appropriate buttons. The units are remembered
when the ST610B is turned off.
The MAX button puts the instrument into a recording mode and it displays
the maximum temperature reached. In this mode the auto power-off fea-
ture is disabled. To cancel the MAX mode press the MAX button again.
While in MAX mode pressing the HOLD button stops recording of the MAX
temperature. Press the HOLD button again to resume recording.
MAX Mode
Resolution
The resolution of the displayed reading can be selected with the 0.1° and
1° buttons. The resolution is remembered when the ST610B is turned off.
If the measured temperature is greater than 199.9 when 0.1° resolution is
selected then the ST610B will overflow and show “+1”. To clear this error
select 1° resolution.
HOLD Mode
The HOLD button freezes the reading on the display. To cancel the HOLD
mode press the HOLD button again.
Tc Mode
Pressing the Tc button causes the internal temperature of the instrument to
be displayed (cold junction temperature). Release the Tc button to show
the normal display.
Low Battery Warning
If the battery symbol appears in the bottom left hand corner of the display
then the battery needs to be replaced. Fit a standard 9 Volt alkaline bat-
tery. The display backlight feature is disabled when the battery is low.
Unplug the thermocouple before changing the battery.
Display Backlight
Press the BACKLIGHT button to turn the backlight on. The backlight will
turn off after 5 seconds unless the BACKLIGHT button is held down.
