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Multi-Channel Model 9302/9304/9308

Cryogenic Temperature Multi-Channel Monitor Model 9302/9304/9308

Cryogenic Temperature Multi-Channel Monitor Model 9302/9304/9308 has two, four, or eight input channels with ethernet connectivity. These models are the most flexible and accurate temperature monitors currently available. Virtually any cryogenic temperature sensor from any manufacturer can be selected by a single setting of the front panel. Additional custom or specially calibrated sensors require only a simple setup procedure. In addition to its high accuracy/performance and low noise design, unique features include: Constant voltage AC sensor excitation internal data logging, ethernet connectivity, large easy to read display and extensive utility software.

Multi-Channel Temperature Monitors 9302/9304/9308 Features:

Two to Eight Input Channels with Ethernet Connectivity
Supports silicon diodes, Platinum RTD and most cryogenic NTC temperature sensors. Dual thermocouple inputs are optional.
Operation from 1.0K to over 1500K with an appropriate sensor. Constant-Voltage, AC excitation of resistive sensors minimizes errors and extends their useful temperature range.
Continuous data logging into internal, Non-Volatile memory.
Two large, dry-contact relay outputs.
Flexible input power: Power-Over-Ethernet or 7.5-24V AC/DC.
Built-in web server. Temperature monitoring and instrument configuration can be performed using any web browser.
Remote interfaces include 100/10 Ethernet and RS-232. USB 2.0 and IEEE-488.2 (GPIB) are optional. LabVIEW™ drivers available for all interfaces.

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Product Documents

Multi-Channel Monitor Model 9302/9304/9308 Documents

SKU: SI-M930X Category: Cryogenic Temperature Monitors

Additional information
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Additional information

Input Channels	The Model 9308 has eight input channels, The 9304 has four and the 9302 has two. All inputs are identical and independent, each capable of supporting a wide range of sensor types.
Sensor Connection	4-wire differential. DB9 Connectors.
Thermocouple Connection	External option. Field installable.
Sensor Types	See Supported Sensor Table.
Sensor Selection	Front Panel or remote interface.
Input Configurations	See input specifications table.
Excitation Modes	Constant-Current or Constant-Voltage.
AC Excitation Frequency	1.625Hz bipolar square wave.
Voltage Excitations	100mV and 10mV. Minimum excitation current is 150nA, maximum is 2.5mA.
Sample Rate	7.5Hz per channel.
Digital Resolution	24 bits.
Measurement Accuracy	See input specifications table.
Measurement Drift	15ppm/ºC.
Isolation	Input channels are not isolated.
Measurement Filter	0.5, 1, 2, 4, 8, 16, 32 and 64 Seconds.
Calibration Curves	Built-in curves for industry standard sensors plus eight user curves with up to 200 entries each. Interpolation is performed using a Cubic Spline.
User Interface Display Type	Graphics TFT LCD, 4mm and 8mm character height.
User Interface Number of Inputs Displayed	Up to eight.
User Interface Keypad	Sealed Silicone Rubber.
User Interface Display Update Rate	0.5 Seconds.
User Interface Display Units	K, C, F or native sensor units.
User Interface Display Resolution	Up to seven significant digits.
Data Logging	Time stamped temperature data can be logged into an internal 800 entry circular buffer. Buffer memory is non-volatile and will retain valid data during loss of power. All eight input channel temperatures are recorded.
Status Outputs Audible and Visual Alarms	Independent audible, remote and visual alarms. Alarms can be latched.
Status Outputs Relays	Two dry-contact relays. N.O. contacts available.
Status Outputs Contact ratings	10A@125VAC or 5A@30VDC.
Remote Interfaces	Maximum reading rate for all interfaces is >40 rdg/s.
Ethernet	Connects to any 100/10 Ethernet Local Area Network. Electrically isolated. TCP and UDP servers provide remote control by using an ASCII command language. HTTP provides built-in web server. SMTP sends e-mail.
IEEE -488.2 (GPIB	External Option, field installable.
USB 2.0	External option, field installable. Serial port emulation.
Programming Language	IEEE-488.2 SCPI compatible. LabVIEW™ drivers available for all interfaces.
Ambient Temperature	25ºC ± 5ºC for specified accuracy.
Mechanical	5.6”W x 2.9”H x 8.8”D.
Weight	3.5 Lbs.
Power Requirement	IEEE-802.3at Power-Over-Ethernet (requires powered hub or injector) or 5 – 24V AC/DC. (External power supply included) 10VA.
Power Switch	Front panel.
Conformity	European CE certified.
Calibration	NIST traceable.
Input Connectors	Four DB-9 recepticals provide 4-wire measurement for two sensors each. The Model 9302 has one connector. The Model 9304 has two and the Model 9308 has four. Any input connector can also be used for the dual thermocouple option connection.
LAN	Standard RJ-45 Ethernet connector. Power-over-Ethernet connection, GPIB Option.
Power input	7.5 to 24 V AC/DC.
RS-232	DB9 plug. Also used for USB option connection.