PLEASE NOTE: This factory installed upgrade/option is only available for purchase as an upgrade or with a new kiln. It cannot be ordered without ordering an L&L kiln.

Type-S Platinum Thermocouple Upgrade

Replaces Standard Type K Thermocouples

The standard thermocouple used on the DynaTrol is Type K. The most common thermocouple configuration used is an 8 gauge exposed Type K thermocouple covered by a mullite ceramic protection tube (standard on Easy-Fire, Jupiter, Liberty-Belle, School-Master, Doll and DaVinci).

The Best High Temperature Thermocouple Is A Type S

The very best thermocouple for constant high fire applications is a Type S platinum thermocouple with an alumina sheath.
This is normally only recommended for the most extreme conditions (like firing crystalline glazes) because of its expense - or if the value or precision of your work is such that you do not want to risk thermocouple drift.
You can special order a DynaTrol with Type S thermocouples. They are not available for the One-Touch™ control.

Technical Information

Type S thermocouples are composed of a positive leg which is 90% platinum and 10% Rhodium, and a negative leg which is 100% platinum.
It is usable from 32°F to 2700°F. (0°C to 1480°C).
It has a different EMF output than Type K thermocouples (meaning the same temperature will produce different voltages to the control which must then be interpreted differently).
That different scale requires both a simple hardware configuration change and a software change to take effect so it can not be done inadvertently.
At temperatures used in pottery kilns (even the highest 2350°F) these thermocouples can last for a very long time (as long as they are not mechanically broken).

Retrofitting A Control With Type K Thermocouples

This is not a retrofittable option on DynaTrols used before Jan 1, 2006.
On the newer 700 DynaTrol boards it is possible to switch from Type K to Type S with a programming change and a jumper change.
You MUST also change the thermocouple extension wire from Type K wire to Type S wire.

Description

The Type S thermocouples that we provide have a 5/16" OD alumina sheath.
They are ungrounded.
There are two lengths.
The short one used in the Easy-Fire, Jupiter and DaVinci kilns is 120mm (4.75”) long.
The long one used in the front-loading kilns like the Renaissance, Hercules and Easy-Load kilns is 160mm long (6.3”).
Termination is in a ceramic terminal block.

Which Thermocouples Are Used On Which Kilns

One 120mm thermocouple is used on the Doll
Two 120mm thermocouples are used for any two section (18" high) Easy-Fire, Jupiter or DaVinci kiln
Three 120mm thermocouples on all other Easy-Fire, Jupiter or Davinci kilns.
EL2424 kilns use two. EL2427 and all other Easy-Load kilns use three. All front-loading kilns use 160mm TCs.
Type S thermocouples are not available on the School-Master, Liberty-Belle, Doll or Renaissance kilns if fitted with a Bartlett 3 Button control or the One-Touch™ control.
These are included as standard equipment on the JH Series Kilns.

Important Note

If you have a Type S thermocouple or are retrofitting an older kiln with a Type S thermocouple the control must be configured for use with Type S thermocouples. If not the kiln could seriously overfire. See this for more information...

Products

Thermocouple Protection Tube – Mullite – 12” Long x 3/4” OD

Thomas Stuart Adjustable Leg Extension Set

Thomas Stuart EQ Cup Head System – 12”

Thomas Stuart EQ Cup Head System – 12” and 16” Ring Mold

Thomas Stuart Shaft Extension

Tin Oxide

Titanium Dioxide

Tongue Throwing Rib

traction drive cone

Tri-Calcium Phosphate

Tri-Sodium Phosphate

Tumbler Makin' Edna

Tumbler Makin' Edna XL

Tumbler Makin' Fred

Tumbler Makin' Fred XL

Type K Thermocouple Block

Type K Thermocouple Wire

Type K Thermocouple – 8 Gauge – 12” Long

Type K Thermocouple – 8 Gauge – 6” Long

Type K Thermocouple – 8 Gauge – 8” Long

Type S Platinum Thermocouple Upgrade - 1 Zone Kiln

Ultrox 500W

Umber, Burnt

Vent Doubler for venting two kilns with one vent

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