During a bench test, where a heat gun was used to increase the temperature of a type J thermocouple, reported temperature exceeded 500 C and insulation near the tip of the probe started to melt.
After this test, room temperature / cold joint has been reported…

Hi,

Could you help to explain more on the cold junction compensation?

Hello,

I would like to use LTC2983 or 2984 for Type T thermocouple measurements.
10 sensors (full usage of 20ch and no capacitor filtering at inputs).
Also only 2 conversion method, no need for open wire detection. 

What is the fastest rate I could scan…

Hi,

i'm currently looking for an opportunity to save an additonal pin in my design. I'm using the LTC2983 Testbench Tool to evaluate different configurations.

Variant A is used throughout the documentation as one way to interface a PT-100 RTD…

I cant get the quikeval program with LTC2983 to stop giving me -999 measurements. It worked in January with the Demo Circuit 2210A for measurement of a PT-1000 resistor with a 2000k Ohm Rsense. Now we have manual wiring to the reistors instead of the…

Hello
I am using the LTC2983  to get temperature of a specific device designed by another team.

Basically they implemented a kind of diode. They ask me to provide a 10[uA] excitation current and to measure the voltage at the diode.
(I have a specific formula…

Hello,

I'm using a LTC2983 demo board with LTC2983 Testbench program.

Demo Board: 2026C + 2209A + 2210A

Hardware connection: CH1-- 2k sense resistor -- CH2, RTD PT-100 sensor => CH2, CH3, CH4 connected, COM connected to GND pin

When I run the…

Hello,

We are using LTC2983 to measure the temperature on four PT1000 probes connected by 4 wires to LTC, Rsense connection is Kelvin type (5 kOhm). Below you can find scheme:

Measurements work properly, but we noticed that disconnecting specific cable…