AOIP-Expandable 3-channel precision thermometer for PRTs, thermocouples, thermistors (Model:MILLIK)

 The MilliK precision thermometer sets a new standard for the high accuracy measurement and calibration of Platinum resistance thermometers, thermistors, thermocouple and process instrumentation (4-20 mA) over the range -270°C to 1820°C.

In addition to low uncertainty measurements from reference standards and industrial sensor measurement, the MilliK can control temperature sources (liquid baths and dry blocks), sequencing through a programmable list of temperature set points and logging data to internal memory or a USB drive.

The MilliK has two input channels for sensors and a third channel for current. Combined to MillisKanner, it can be expanded to become a measuring system with up to 33 channels reading SPRTs, RTDs, thermistors, or thermocouples with the option to control calibration baths and log readings accurately.

High accuracy and high resolution

Accuracy is < ±5 ppm for PRTs, ±2 μV for thermocouples and ±1 μA for transmitters

The display resolution is 0.0001°C (0.1 mK) and is made possible by using a powerful ADC to achieve a true measuring resolution of just 28 μΩ equivalent to 0.00007°C (0.07 mK) for PRT inputs.

The MilliK can display in °C, °F, K, Ohms, mV and mA with numeric and graphical display modes. The large back lit display makes configuring the instrument and setting the scrolling strip charts intuitive. The USB port allows for the use of a mouse, keyboard or USB Drive.

Designed for field and lab use

A robust design and operation from AC or DC power allows the MilliK to be used in the laboratory, test room or out in the field. It meets the requirements of industrial users and applications: 

Fast current reversal technology and solid state switching eliminate thermal EMF effects avoiding the errors that occur with fixed DC instruments.

PRT lead wire errors are eliminated for up to 30 m of four core screened cable.

Not only are the two sensor channels galvanically isolated, but the 4-20 mA input is also separately isolated. The benefits are no ground loops, improved safety and noise immunity.

Specifications and performances in temperature, channel 1 + 2

SPRTs / PRTs: Measurement

Temperature conversions: IEC 60751 (2008), Callendar-van Dusen, ITS-90

Measuring current: 1 mA and 1.428 mA at ±0.4% reversing

Keep-warm current: 1 mA and 1.428 mA

Thermistors: Measurement

Measuring current: 5 µA reversing

Thermocouples: Measurement