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 ( 0.36"  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
series  SD-2  Digital  TIMER + THERMOSTAT ( in one unit )
with external temperature sensor. Output load up to 60 Amp / 250Vac .

with 2 ROTARY controls :

1. TIMER CONTROL and ON/OFF and "AUXILIARY Output ON/OFF" control ( Light, Fan, etc... )
2. TEMPERATURE PRESET and "Output load OFF" position
DESCRIPTION:
Electronic, digital controller designed for Heating or Cooling.
This controller has an internal, programmable (interval) timer that is preset by rotating the knob on the left hand side.
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 is preset by rotating the knob on the right hand side.
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 contacts 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.
The timer may be manually reset.
Optional Additional relay (for  light, fan ) may ba activated by turning the "timer" knob to fully clockwise.
Additional relay(s) may be activated automatically and/or manually.

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:  Stainless Steel 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 flush with the wall.
Examples of Popular models:

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


SD-2-I-2HP1MP-120-56-SNEXT-DPL


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


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

HIGH TEMPERATURE Dry Sauna Timer + Thermostat. 5-60 Minutes, 160-257 F (73-125 C)  preset range, 2 High Power relays (30 Amp each), with Auto-Manual Light Control

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 :
NA7100KB4100BLK


NA7100KB4100CHR


NA7100KB4100RDT



NA7100KB4100SQT


NA7100KB4100DPD


NA7100KB4100SHD



PT1000TC38550MM




NA7100KB4100PIPTR
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
OPTIONAL Plastic or Metal (SS)
Sensor Probe Plate
(model PPP4 or PPS4 ).
OPTIONAL:
Sensor Probe Guard only
model PG5 (black or grey ) .
NOTE:  CUSTOM MODIFICATIONS AVAILABLE FOR ALL MODELS
SD-2 with Black Face
SD-2 with Grey Face
Thermowell model:  BTW-100-05-075NPT
Brass, Stem = 4" , Bore = 0.2", 3/4 NPT thread
Thermowell model:  BTW-25-05-075NPT
Brass, Stem = 1" , Bore = 0.2", 3/4 NPT thread
Thermowell model:  BTW-25-05-025NPT
Brass, Stem = 1" , Bore = 0.2", 1/4 NPT thread
Thermowell model:
SSTW-114-066-050NPT
Stainless Steel
Stem = 4-1/2"
Bore = 0.26"
1/2 NPT thread
Thermowell model:
SSTW-114-066-075NPT
Stainless Steel
Stem = 4-1/2"
Bore = 0.26"
3/4 NPT thread
Thermowell model:
SSTW-41-066-050NPT
Stainless Steel
Stem = 1-5/8"
Bore = 0.26"
1/2 NPT thread
Thermowell model:
SSTW-64-066-050NPT
Stainless Steel
Stem = 2-1/2"
Bore = 0.26"
1/2 NPT thread
Toll Free:  1- 866- 829- 4253
CUSTOM TEMPERATURE RANGES PER REQUEST
TEMPERATURE PROBE WIRING EXTENDABLE
UP TO 500 FEET ( 150m ).
E-mail:  info@keracontrols.com
E-mail:  info@keracontrols.com
KERA Technologies Inc.    Toll Free:  1-866-829-4253