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NORHOF LN2 Microdosing System #608

Norhof manufactures LN2 microdosing systems. Liquid Nitrogen (LN2) is used as the cooling medium and is taken from a storage vessel (Dewar) with low pressure (max. 300 mBar) and delivered (pumped) through a fill line to the application in a micro dosing way.

The Norhof LN2 microdosing system is designed to overcome the drawbacks of LN2 under pressure in which a solenoid valve is used to switch the supply ON / OFF. You may compare the Norhof system with a water tap, but instead of giving water, it gently gives liquid nitrogen, with an adjustable flow, possible to regulate from some drops, up to 1 Liter/minute. Our pump can pump LN2 up to 5 meters above the pump itself

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Product Specification

FTIR detector filling system

Universal automatic filling system for FTIR detectors as from Bruker or Shimadzu;
Plug and play refilling system, to refill the detector at a pre-set time interval;
Usable for overnight measurements;
Possible to control extra filling;
in order an automatic fill action can not disturb your automatic
measurements
Fully safe to use inside the laboratory
Always ready to use
Very slow and gentle filling rate
Easy setup, on most FTIR detectors, no tooling needed
Universal adaptor for Bruker Vertex70 or Vertex80 or similar
Adaptor for Shimadzu AIM8800 or similar

Technical Specifications

Static evaporation rate	< 0,5 liters per day
Flow rate	Pre-set on 40 mBar (adjustable with the supplied software)
Maximum working pressure	< 300 mBar
Reaction time	+/- 1 minutes for cooling down the fill line (with 1.6 meters fill line)
Power connection	115V / 230V AC with supplied power supply or 12-24 Volt AC/DC
Power consumption	average 10 Watts, during pumping 50 watts
Storage container volume	35 Liter	50 Liter	100 Liter
Outside dimensions (diameter)	480	500 mm	500 mm
Height dimensions	791	875 mm	1235 mm
Weight (empty, full)	13 / 41,5 kg	17 / 57,5 kg	32 / 113 kg
Standard fill line	6.25 mm OD, 4 mm ID PTFE tube, with 32mm foam insulation
System includes	Dewar, pump, fill line 1.6 m, phase separator, power supply, cables, 2 level sensors, PC software.
Working modes	Automatic fill control with timer (1 sensor)
External control	5 volt signals for ON, OFF and RS232 signals for ON, OFF
PC software	Monitor software, to monitor pump and data logging
Alarms/warning acoustical/ visual / mechanical	Dewar empty, Dewar 5 liters LN2 left, broken sensor(s), frozen alarm, mechanical overpressure protection valve.
Options	Adaptor with sensor for Bruker detectors Adaptor for Shimadzu AIM8800 or similar Custom built adaptor to fixate sensor(s) on application Transport trolley 5 wheels (10 cm height) Stand for pump (when Dewar is refilled)

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