User`s manual

Lake Shore MTD Series Cryotest System User’s Manual
Options, Accessories, & Cables 6-3
ACCESSORIES (CONTINUED)
MODEL DESCRIPTION OF ACCESSORY
1220-50
Liquid Nitrogen 50 Liter Storage Dewar. The Storage Dewar is a rugged 50-liter self-
pressurized dewar configured to be compatible with the Model 1210 and 1215 Transfer Lines.
The top of the dewar is equipped with a port which will accommodate the transfer line 0.5 inch
rigid withdrawal tube to permit siphonal withdrawal of the LN
2
(the same withdrawal process
which is commonly used with laboratory LHe storage dewars). Permanent vacuum insulation and
mulitlayer reflective shielding with getter materials ensure normal LN
2
evaporation losses of <1.5
liters per day. The polished stainless steel dewar is supplied with a ½-inch fill and withdrawal
valve, a 3/8-inch vent valve, and a liquid level gauge. It is mounted on casters for easy mobility.
Liquid Capacity: 50 Liters Outside Diameter: 18 inches
Loss Rate: 1.5 liters per day, maximum Overall Height: 42 inches
Operating Pressure: 10 psi, maximum Connections: Fill and Withdrawal: ½ inch male flare
Pressure Gauge: 0
– 30 psig Vent: 3/8 inch male NPT
Weight: Empty: 100 pounds Transfer Line Port: 0.5 inch I.D.
Full: 180 pounds
Shipping: 150 pounds
1305
Cooled Filter/Aperture Wheel Assembly – Manual. When it is necessary to illuminate the DUT
through a series of filters, those filters should be as close in temperature to the DUT. The MTD
system solves this problem. Fully enclosed filter wheel assemblies may be fitted inside an
extended height (length) vacuum shroud end closure and radiation shield over the sample test
area. The wheel features eight 25.4 mm (1 inch) diameter filter mounts positioned to be rotated
directly into the optical axis of the system.
The filter wheel is coupled to a drive shaft assembly which protrudes through the base plate.
There it terminates in a high resolution drive mechanism coupled to a 3-digit position indicator
that precisely aligns each filter with the optical axis. For finer control of light entering the test
chamber, a second filter wheel assembly may be mounted in the standard MTD System. It is
independently rotated by its own drive assembly.
Will accommodate 25.4 mm (1 inch) diameter filters, 1–2 mm thick, in standard configuration.
Adapters for 12.7 mm (0.5 inch) diameter filters are available. Compatible with MTD-140 and 150.
Filter wheel assemblies are factory installed and must be specified at time of initial order.
1306
Cooled Filter/Aperture Wheel Assembly – Manual. Recommended for device testing at low
background levels out to 30 microns. The wheel module is enclosed on all sides and a low
temperature/low radiation background enclosure surrounds the assembly. Compatible with
MTD-140 and 150. Filter wheel assemblies are factory installed and must be specified at time
of initial order.
1307
Cooled Filter/Aperture Wheel Assembly – Manual. Compatible with MTD-144 and 154. Filter
wheel assemblies are factory installed and must be specified at time of initial order.
1308
Cooled Filter/Aperture Wheel Assembly – Manual. Compatible with MTD-158. Filter wheel
assemblies are factory installed and must be specified at time of initial order.
1310
Dual Cooled Filter/Aperture Wheel Assembly – Manual. Includes a second eight-position filter
wheel assembly installed above the first wheel. Compatible with MTD-140 and 150. Filter wheel
assemblies are factory installed and must be specified at time of initial order.
1401
Motorized Driver and Controller Assembly. Motorized driver and controller assemblies are used
with the Cooled Filter/Aperture Wheel Assemblies whenever fully automated, computer controlled
device testing is required. Operation is manual using the front panel or remotely via the standard
RS-232C Serial Computer Interface. Compatible with MTD-140, 144, 150, and 154. Motorized
assemblies are factory installed and must be specified at time of initial order.