Doty Scientific CryoMas NMR Cabinet w/ Probe, Peltier Module, 2x Oxford ITC 503

Description

Doty Scientific CryoMas NMR Cabinet w/ Probe, Peltier Module, 2x Oxford ITC 503
1x Doty Scientific Preamp Power Supply Peltier Module
2x Oxford ITC503 Intelligent Temperature Controller for Cryogenic Systems, 611-696
Purge Out
Purge In
Compressor Return
Probe Cold Plate Sensor
Preamp Power
Air Input
Condition:
AS IS government surplus item.
Picked up from a discontinuing facility in unknown condition.
Photos represent the exact item that will be shipped. Please refer the photos.
Oxford ITC503 Intelligent Temperature Controller for Cryogenic Systems, 611-696
ITC503 is a high performance laboratory temperature controller, with a number of features specifically intended for use in cryogenic applications. In its most common application ITC503 will be used to control the temperature of some “sample”, the properties of which are being investigated as a function of temperature. The sample will have a sensor monitoring its temperature, and a heater and/or some means of cooling, whereby its temperature may be varied. The whole will normally be surrounded by some form of thermal insulation to isolate the sample from its environment. In this manual the term “sample” will be used to refer to any object being controlled and the term “system” will be used to refer to the complete assembly.
ITC503 is a microprocessor based instrument and is controlled by an operating program contained in a programmable memory chip (EPROM). This program is referred to as the ITC503 firmware. The firmware is coded with a two part number (for example 1.01) where the first digit indicates a major version of the firmware and the second two digits cover minor revisions.
The basic ITC503 includes a single input channel for one sensor. A further two independent input channels may be added for systems with more than one sensor.
For use in cryogenic applications ITC503 can accept a wide range of different temperature sensors and can provide up to 80 W of heating power. In addition it contains internal logic to drive a motorised valve as a means of controlling sample cooling in a continuous flow cryostat. ITC503 displays the sample temperature on a four and one half digit display, covering a range of up to -19999 to +19999 for Centigrade ranges.
For cryogenic ranges, temperatures are displayed in Kelvin and the display is able to auto-range, to display low temperatures to greater precision. With an appropriate sensor ITC503 can provide a display resolution of 1 mK for temperatures below 20 K.
Manual operation of the controller is by means of front panel push buttons and associated status lamps.
Remote computer control and monitoring is possible by means of built-in RS232 (Serial) or GPIB (IEEE-488) Interfaces, both fitted as standard to ITC503.
The controller incorporates a number of safety features to prevent damage to the system if a fault should occur in the sensor or the controller itself. Where three sensors are fitted, all are continuously monitored for over-temperature, irrespective of which sensor(s) are selected for control and display.
Sensor calibration data and many of the controller operating parameters are held in a non-volatile memory, which is retained when the controller is switched off.
ITC503 offers automatic selection of appropriate control parameters (PID values) for operation throughout its working range. These parameters may themselves be “learnt” for a particular system, by use of ITC503 operating in conjunction with the Oxford Instruments Object-Bench software, supplied with the instrument.
Specification
INPUT CHANNELS 1 standard, 3 optional
INPUT RANGE 5mV TO 2V FSD
INPUT OFFSET -2v to +2v
CURRENT SOURCE 10uA, 100uA, 1mA (+/-10%)
SENSOR
Voltage Input 5mV to 2V FSD
Resistance Input 4-wire, 5 Ohm to 200 K Ohm FSD
Thermocouple See List. (RT comp. on Celsius ranges)
Pt, RhFe Resistor 4-wire resistance measurement
Ge, Carbon Resistor 4-wire conductance measurement
Si, GaAs Diode Volts sense at constant current
HEATER OUTPUT 0-40v DC
HEATER RESISTANCE 20 ohms min
OUTPUT POWER 80W max into 20 ohms
AUXILIARY I/O For gas controller
CHART RECORDER o/pTime Prop Signal on AUX Socket. (Requires external passive filter)
DISPLAY TYPE 0.56 inch RED LED
DISPLAY RANGE 0.000K to 1667.7K (Auto-ranging) -273.2C to 1394.7C
CONTROL METHOD Digital 3-Term (P,I,D)
SAMPLE RATE 4 Hz
INPUT RESOLUTION 24 Bit
OUTPUT RESOLUTION 16 Bit
INTERNAL ARITHMETIC 24 Bit for Error Generation / 16 Bit for P & D Terms / 32 Bit for I Term
RS232 INTERFACE Configured as DCE
HANDSHAKE None Required
BAUD RATE 9600 Baud
IEEE-488 INTERFACE Internal Interface
CONNECTORS
POWER IN IEC 3 pin
SENSOR INPUT 9 way D socket
AUXILIARY I/O 15 way D socket
RS232 25 way D socket
POWER REQUIREMENTS 100-240V 50/60Hz
POWER CONSUMPTION 120VA approx
CASE STYLE Freestanding Metal Case / Optional Rack Mount Ears
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