Arduino K, J or T Type Thermocouples Multiplexer Shield
This shield allows you to connect 8 Thermocouples to your Arduino
The KTA-259 Thermocouple Multiplexer Shield is designed to easily allow multiple high temperature readings with an Arduino control board.
Screw terminals are provided for thermocouple connections as thermocouple wires can not be soldered.
Note: The board ships as pictured, without Arduino headers. You can use standard break-away headers, or the stackable headers. The board accepts both standard headers and R3 headers.
Uses:
- Automotive: Engine, Exhaust and Brake temperatures are higher than most temperature sensors can handle but within the range of Thermocouples.
- Ovens, Furnaces and Kilns: At temperatures where other temperature sensors will not operate.
- Chemical Processes: Where corrosive chemicals may damage probes or reach high temperatures thermocouples are more readily available for such processes.
- Multi-Zone Temperature Monitoring, Data Acquisition or Logging System with cheap readily available thermocouples.
| Ocean Controls SKU / Part Number | Thermocouple Type | IC | MAX31855 Temperature Range | Thermocouple Maximum Temperature Range[1] |
| KTA-259K | K | MAX31855K | -200 to 1350 °C | -270 to 1372 °C |
| KTA-259J | J | MAX31855J | -40 to 750 °C | -210 to 1200 °C |
| KTA-259T | T | MAX31855T | -250 to 400 °C | -270 to 400 °C |
- Power Supply: Powered from 3.3V Arduino Pin, 5V compatible
- Power Consumption: <1.5mA at 3.3V
- Output: Cold Junction Compensated Output
- Based on MAX31855 Cold-Junction Compensated Thermocouple-to-Digital Converter and ADG608 Multiplexer IC
- Add up to 8 Thermocouples to an Arduino
- Nominal ±2°C accuracy[2]
- 14-bit 0.25°C Resolution
- 13 x 8 Prototyping Area with Analog and Power pins
- K, J, or T Type Thermocouples supported dependent on model
- 0.1” (2.54mm) Pitch Screw Terminals for Thermocouple connection
- Chip Select Pin Jumper Selectable means multi SPI shield compatibility
- Combine with SD card shield for powerful Temperature Logging
- Dimensions: 60L x 52W x 10H (mm)
Selection Guide:
- Note 1: This is the range of temperatures that a thermocouple of this type can measure, the Measured Temperature Range is the actual range the MAX31855 can digitise.
- Note 2: The MAX31855 datasheet specifies ±2 °C for all thermocouple types within the range -20 to 85 °C, not including thermocouple non-linearity or CJC temperature measurement uncertainty. This also doesn't include the effect of the MUX or the KTA-259 board layout.
- Note 3: The MAX31855 will not work properly with grounded thermocouples. The thermocouple is deliberately connected to the sheath to improve the response time.
See the FAQ or Manual for more on the accuracy and range limitations of the shield
- KTA-259x Manual
- Frequently Asked Questions
- Sample Arduino Sketch
- Arduino Library by Cory Fowler with support for the card (uses hardware SPI)
- Alternative Example Sketch by Thomas Court. Uses the Uno/Mega's Timer0 for faster operation.
- MAX31855 Data Sheet
- ADG608 Data Sheet
- Download RoHS Certificate
Dispatch
In-stock orders are dispatched within 2 business days.
Shipping options
We deliver across Australia and internationally by any of the following methods:
- Australia Post Express
- Australia Post Parcel Post
- DHL
- FedEx (only international)
- Freight account. We'll email packaging dimensions when the shipment is ready to be book.
*Transit times vary depending on the shipping method and destination.
Store Pickup - Carrum Downs, Victoria, 3201
Order before 11am to collect after 2pm the same day. Mon–Fri, 9am–5pm, excludes public holidays.
RETURNS
How to return an item Contact us before sending anything back. Email info@oceancontrols.com.au or call +61 3 9708 2390. We'll confirm eligibility and guide you to the return process.
Return window 14 days from dispatch date.
Condition required Items must be unused and in original packaging, including all documentation and manuals.
Restocking fee A 20% restocking fee applies to all accepted returns. Return shipping costs are the customer's responsibility.
Non-returnable items
- Custom-made or specially imported products
- Software licences (some software have trial versions available)
- Items not in original, as-new condition
WARRANTY
How to make a warranty claim Before returning anything, please contact us. Our engineers can often resolve the issue remotely. If a return is required, our team will provide you with a warranty form to include with the goods.
What's covered Defects in materials and workmanship under normal use and correct installation.
What's not covered The warranty does not cover damage or failures caused by factors outside our control, including incorrect installation, unauthorised alterations or modifications, or any installation or use not recommended by the manufacturer.
Standard warranty All products carry a 12-month warranty from the date of purchase unless stated otherwise.
Extended warranty
- Labjack: 5 Years
- Atop: 5 Years
- MeanWell: 3 Years
- Teracom: 3 Years
- Novus: 3 Years
