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Temperature controller

The "Kelvinion" from MultiFields is a powerful cryogenic temperature controller. The Kelvinion is a powerful cryogenic thermostat that includes two independent high-precision temperature measurement channels (RTD and Diode type thermometers are supported) and two high-power PID outputs of up to 100W+50W, as well as two relay outputs and two analogue output channels. Kelvinion cryostat is a great tool for cryogenic research.

Temperature controller Overview

Features:
- Temperature measurement and control down to 300 mK ;.
- 8 independent temperature measurement channels with resolutions up to 0.1 mK (24-bit ADC) ;.
- Automatic adjustment of thermometer excitation current for measurement accuracy and heat generation;
- Supports 1000+ user-defined indexing tables;
- 2-way PID output channel power 100 W + 50 W;
- Support 2-channel relay and 2-channel analogue signal output;
- Temperature rise and fall rate can be set;
- PID parameters can be switched according to the zone table in different temperature ranges (Zone mode);
- Support USB (serial port), network port, GPIB communication;
- Has a heater short circuit and open circuit detection, set value and temperature limits and other safety protection measures.

Temperature controller Technical Parameter

Kelvinion Temperature controller product parameters：

Input
Input channel	8
Isolation	The sensor input channel is electrically isolated from the control circuit
Analog-to-digital conversion	24 bits
Update rate	Ten times per second
User curve	More than 1,000 curves (with 400 points on each curve)
Filtering	Kalman filter
Input parameters
Sensor type	Diode type/resistance type
Measurement type	Four-line method
Motivation	Constant amplitude alternating direction current excitation (resistive type)
Support sensors	Diode: Si, GaAlAs; Resistive type: 100 Ω & 1000 Ω Pt, Ge, Carbon-Glass, Cernox®, and Rox™
NTC- Input Range	0~10 Ω	0~30 Ω	0~100 Ω	0~300 Ω	0~1 kΩ	0~3 kΩ	0~10 kΩ	0~30 kΩ	0~100 kΩ
NTC- Excitation Current	1 mA	0.3mA	0.1mA	30µA	10µA	3µA	1 µA	0.3µA	0.1 µA
NTC- Measurement Resolution	0.15 mΩ	0.45 mΩ	1.5 mΩ	4.5 mΩ	15 mΩ +0.02‰ of rdg	45 mΩ +0.02‰ of rdg	150 mΩ +0.02‰ of rdg	450 mΩ +0.02‰ of rdg	1.5 Ω +0.05‰ of rdg
NTC- Accuracy	8 mΩ	20 mΩ	50 mΩ	120 mΩ	0.5 Ω +0.02‰ of rdg	1.2 Ω +0.02‰ of rdg	5 Ω +0.02‰ of rdg	15 Ω +0.02‰ of rdg	15 Ω +0.05‰ of rdg
Temperature control
Temperature control channel	2
PID tuning	PID parameter self-tuning
PID parameters	P (proportion): 0-1000 Set the resolution to 0.01 I (integral): 0-1000 Set the resolution to 0.01 D (differential): 0-200% Set the resolution to 0.01% Manual power setting: 0-100% Set the resolution to 0.01%
Zone Mode	The PID and power range can be independently set for the five temperature intervals
Set the rate of temperature change	0.1 K/min ～ 20 K/min
Output Channel 1	25 Ω heater				50 Ω heater
Type	Adjustable DC current output
Digital-to-analog conversion	16 bits
Power	100W				50W
Current	2A				1A
Pressure limiting	50V
Heater resistance	10 to 100 Ω
Power range	Three
Output Channel 2	25 Ω heater				50 Ω heater
Type	Adjustable DC current output
Digital-to-analog conversion	16 bits
Power	50W				25W
Current	1.4A				1A
Pressure limiting	50V
Heater resistance	10 to 100 Ω
Power range	Three
General
Relay output	Two
Analog output	Two, ± 10V, 16-bit
Communication	Serial port (USB) : USB-TypeB port, baud rate 115200 GPIB: IEEE488.2 protocol, supports setting addresses LAN: TCP/IP protocol, 10M/100M adaptive rate, supports setting IP addresses and port numbers
Display	5.0-inch touch screen; Resolution: 1280 x 720
Storage space	16M, direct connection without driver for PC
Safety protection	Heater short circuit & open circuit protection; Temperature over-limit protection
Size	430(W) * 88.9(H) * 358(L) (unit: mm)