sunbet(中国)

In large cryogenic installations it is often necessary to check temperatures at several s simultaneously, and for this need of multi-channel temperature measurement MultiFields has launched the "Kelvinion Monitor" cryogenic monitor. It comes standard with 12 proprietary, high-precision temperature measurement channels (RTD and Diode type thermometers), each with a sampling rate of 10 SPS and synchronised sampling between the channels with a sync time of better than 100 us. the master-slave design allows for easy expansion up to 32 channels and supports mounting in standard enclosures.

Features：
- Temperature measurement can be as low as 300 mK, the measurement resolution is as high as 0.1 mK (24-bit ADC).
- Standard configuration of 12 channels, and support for optional 2 ~ 32 channels;
- Each temperature measurement channel is independent of each other, the sampling rate are 10 SPS;
- Each channel is independent of each other, with a sampling rate of 10 SPS; the channels support synchronous sampling function, with a synchronisation time of better than 100us.
- Automatically adjust the excitation current of the thermometer to obtain the measurement accuracy and heat generation;
- Support 1000+ user-defined indexing table;
- Support USB (serial port), network port, RS485 communication mode.

Product parameters of Temperature Monitor Kelvinion Monitor：

Input
Input channel	12 channels; Optional 2 to 32 channels are available
Isolation	The sensor input channel is electrically isolated from the control circuit
Analog-to-digital conversion	24 位
Update rate	Ten times per second
User curve	More than 1,000 curves (with a maximum of 400 points per curve)
Filtering	Kalman filter
Synchronization time	The inter-channel synchronous sampling time is less than 100 µs
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
General
Communication	Serial port (USB) : USB-TypeB port, baud rate 115200 LAN: TCP/IP protocol, 10M/100M adaptive rate, supports setting IP addresses and port numbers RS-485: Equipped with isolation protection function, isolation voltage 2500VDC, 9600 baud rate
Display	2.4-inch display screen; Resolution: 320 x 240
Size	Host: 79(W) * 88.9(H) * 135(L) (unit: mm) Slave: 22.5(W) * 88.9(H) * 135(L) (unit: mm)