Digital Thermostat with Timer ( model SD-3RT )

APPLICATIONS:

SAUNA control
STEAM BATH control
SPA control
HEATERS and CHILLERS
TIMED Heating or Cooling
Other media Temperature
Heat /Cool process control

SPECIFICATIONS:

Supply:

Timer Preset range:
Timer accuracy:
Temp. control range:

Temp. Accuracy/units:
Control mode:
Display:

Load output 1:
Load output 2:
Load output 3:
Load output 4:
Alarm buzzer:

Probe wiring:
Error detection:

120Vac, 208-240Vac or 12/24Vac/dc, 50/60Hz ( specify model )

Any range 0 to 255 min, DOWN counting ( custom timing available )
Power line frequency (50 or 60 Hz) or internal crystal 30 ppm
0 to 255F (or -17C to 140C) standard or depending upon temp. probe ordered (lower or high temperature ranges available upon request )
+/- 1F (0.5C) Celsius or Fahrenheit (selectable)
ON/OFF or Proportional ( custom control models )
2 x 3 digits, 7 segment, Super Bright LED RED GREEN or BLUE ( 0.56" LED display digits )

SPST relay, 30 Amp, 250Vac (or custom)
SPST relay, 30 Amp, 250Vac (or custom)
OPTIONAL, SPST relay, 10 Amp, 250Vac (or custom)
OPTIONAL, SPST relay, 10 Amp, 250Vac (or custom)
OPTIONAL, piezo, 85dB internal

Up to 500 feet ( 150m ) away from controller ( any type wire )
Automatic with error display and protection

Click here to download:

WIRING EXAMPLES

SD-3RT SPECIFICATIONS

DESCRIPTION:
Electronic, digital controller designed for Heating or Cooling.
This controller has an internal, programmable (interval) timer.
When the timer starts the internal thermostat will control the output high power relays ( 1 or 2 relays on-board rated at up to 30Amp or 40Amp each ). When wired to a Heater or another load like a Fan or a Pump, they will control the temperature.
The temperature and the timer are preset with 2 rotary knobs on the control panel.
Two additional Pushbuttons control Start and Stop of the Timer and an additional on-board relay to switch the Light, Fan or other load.
One digital display shows both, the preset and the current temperature and the other shows the preset time and the current count down.
The output relays are isolated for wiring to any low or high voltage source.

Other Features:
The probe may be wired up to 500 ft. ( 150 meters ) away from the controller with standard 2-conductor wire.
Quiet, Arc-Free switching of high power load.
The load output may be manually turned OFF and the temperature preset may be changed at any time.
Additional relay(s) may be activated automatically by the internal program at a customized option.

The timer can count in seconds, minutes or hours depending upon the model.
The temperature units are Celsius or Fahrenheit as selected by an on-board jumper.

DIMENSIONS:

Face: Metal with Lexan decal.
Body: ( W x H x D )
5-3/8" x 2.75" x 2"
136mm x 70mm x 51mm

INSTALLATION in Box or Wall ( Panel ):

Designed to fit in a 3-Gang
electrical box or in a panel.
Face plate will sit semi- flush with the wall.

Example of Popular models:

SD-3RT-I-2HP-120-56-SN

SD-3RT-I-2HP-120-56-IR

Dry Sauna Timer + Thermostat. 5-60Minutes, 100-194 F (37-90 C) preset range,
2 High Power relays (30 Amp each)

INFRA RED Sauna Timer + Thermostat. 5-60 Minutes, 40-131 F (5-55 C) preset range,
2 High Power relays (30 Amp each)

SELECTION of standard Temperature Probes :

TYPICAL WIRING EXAMPLES ( for more click on the images below )

COMPLETE NUMBERING SYSTEM FOR SD series CONTROLLERS :
( click below to download PDF document )

30 Amp max., plus Light control

2 AC / DC Motors, 2 x 30 Amp max.

60 Amp max. ( in 2 banks )

60 Amp max. ( in 2 banks ),
plus Light & Fan or Radio/CD control

series SD-3RT TIMER + THERMOSTAT ( in one unit )
with control Panel and Optional Remote Display
with external temperature sensor. Output load up to 60 Amp / 250Vac .

with 2 ROTARY controls and 2 PUSHBUTTONS :

1. Knob for TIMER Preset
2. Knob for Temperature Preset
3. Pushbutton for START and STOP
4. Pushbutton for Light, Fan or other option ( on-board Relay )