NORHOF Liquid Nitrogen Automatic DSC filling 606

 

Fully automatic slow filling system for Shimadzu Differential Scanning Calorimeters.

Are you still poring LN2 into your DSC by hand, several times per measurement?

• Safe auto filling of DSC. The operator can not come in contact with the LN2
• System fills up to 4 cm level in the DSC reservoir, and then very slowly keeps filling while measurement runs
• Steered by the DSC, filling stops when cold is not any longer needed.
• Pressure-less flowing LN2, without spilling, noise, vibrations etc. 

Norhof manufactures cooling systems in which Liquid Nitrogen (LN2) is used as the cooling medium. LN2 is supplied without any pressure and filling an application is like a teapot filling a teacup.

You may compare our liquid nitrogen dispenser system with a water tap , but instead of giving water, it gives LN2, starting  with some drops, up to 1 Litre/minute.

Liquid Nitrogen (LN2)

The reservoir dewar can safely stand next to your working place. No dangerous LN2 pressures exits.

When your DSC needs cold, the system is switched on by the Shimadzu DSC, starting to supply LN2. (* for other DSC's pump may be switched by 5 Volt signals or RS232 commands, or by the button on the pump)

When switched ON, the system starts building a small over pressure, forcing the liquid gently to rise into the fill line, and fall into your dry DSC reservoir. The sensor, placed also in the reservoir, makes the filling slower when there is ab.4 cm level. If the level becomes lower, filling is increased. If the level becomes too high, filling is slower, thus keeping the level continuous on 4 cm.  

Usage

The majority of this system find use in the field of scientific instruments, physical laboratories, research centers etc. where DSC measurements are made with a DSC which needs LN2 during the measurement process.

Use of this system is for example for:

• auto filling of Shimadzu DSC60 or similar with the adaptor shown on picture above
• auto filling of other brands of DSC, with an adaptor on request

WORKING PRINCIPLE

The pressure above the liquid level inside the dewar is built by heating a small amount of liquid in the bottom of the dewar. 

With only up to 50 mBar of overpressure, the liquid will gentle rise out of the rise pipe and fall into the fill hose.

Because we evaporate some LN2 to build pressure, there is no adding of ice inside the dewar, such as with manual systems which use air from the environment.

In the Norhof LN2 cooling systems Liquid Nitrogen is stored in pressure less Dewars. When LN2 is required, a small overpressure is generated by a small heater element in the LN2, and liquid flows out of the system like water from a tap, without spilling, noise, vibrations etc.

The advantages are numerous:

• the system is extremely safe

the operator comes not in contact with LN2.

• the system is time saving

the operator does not need to poor in LN2 several times.

• the system can autofill the DSC just with a press on the start button

this means that the system is ready for use 24 hours a day.

• the system delivers LN2 without any pressure

this means without noise, vibration, excessive waste, etc.

• there is no external LN2 valve required

that implies no unnecessary heat input which spoils a lot of LN2

• there is no internal LN2 valve in the pump

LN2 comes out of insulated tubing without making contact to warm metallic parts, so very fast

• there is a very low thermal masse to cool down in the pump

LN2 comes out within 60 seconds. 

Filling efficiency is better than 90%, due to very less loss for cooling down pump parts.

• there is a very low thermal connection to the ambient temperature

This means that the system is extremely economic in stand-by. Typical usage less than 0,5 Litre / day

• P.E.D. 99/36/EC (Pressure European Directive) for pressurized vessels does not apply for this system

The maximum possible pressure is lower than 300mBar.Therefore this system is allowed to be used inside the lab, near your working place, without danger.

 

Cryostorage Equipment - Liquid Nitrogen Transfer Devices - Norhof

Liquid Nitrogen (LN2) The cryogenic transfer flow is variable and can be optimized to the application.  Flow control is on the system itself or by remote signals. With one and the same system the transfer flow range is from  dripping for e.g. maintaining a certain subzero temperature to full flow for filling e.g. a small Dewar The majority of our systems find use in the field of scientific instruments, physical laboratories, research centers etc. where precise control over subzero temperatures is required or where a LN2 transfer flow of app. 1 L/min is sufficient. Industrial systems with 15 L/min based on the same principle are also available. Use of this system is for example for:  • auto-filling small dewars  • autofill LN2 for CCD dewars  • autofill small dewars for FTIR spectrometer  • autofill cryostats  • autofill Dry Shippers  • refill DSC (Differential scanning calorimetry )  • refill TGA (Thermal Gravimetric Analyzer)  • Liquid Nitrogen Cooled thermal analysis (TGA, STA, TMA, DMA, DMTA)  • refill Infrared spectrometers, HgCdTe infrared detectors  • cooling laser units  • cooling electron microscopes  • cooling cryogenic cold stages  • cooling MCT detectors  • filling coldtraps automatically  • washing Xtals  • XPS- m X-ray Photoelectron Spectroscopy  • cooling low-noise amplifiers and noise-sources  • autocool High efficiency lamps  • cooling a small sample on an ultra-low temperature between -180 and ambient  • injecting LN2 into an airstream  • autocool SEM EDX XRF FTIR  • autocool microscope cold stages  • autocool laboratory milling  WORKING PRINCIPLE The pressure above the liquid nitrogen level inside the dewar is carefully controlled and therefor the flow. With only 100 mBar of overpressure, the liquid will gentle rise out of the rise pipe and fall into the fill hose. Because we evaporate some LN2 to build pressure, there is no adding of ice inside the dewar, such as with manual systems which use air from the environment. In the Norhof LN2 cooling systems the Liquid Nitrogen is stored in pressure less cryogenic Dewars. When LN2 transfer is required, a small overpressure is generated by a micro processor controlled heater element in the LN2, and liquid nitrogen flows out of the system like water from a tap, without spilling, noise, vibrations etc.

 

NORHOF Liquid Nitrogen Pumping System 455

 

Low cost hand controlled Liquid Nitrogen Pumping system

	Safe filling up of reservoir vessels
	Hand controlled administration of smaller amounts of LN2, for filling small dewars or samples
	Low flow, starting by connecting pump on dewar flange.
	Pressure-less flowing LN2, without spilling, noise, vibrations etc.

Norhof manufactures cooling systems in which Liquid Nitrogen (LN2) is used as the cooling medium. LN2 is supplied without any pressure and filling an application is like a teapot filling a teacup.

You may compare our liquid nitrogen dispenser system with a water tap , but instead of giving water, it gives LN2, starting  with some drops, up to 2 Litre/minute.

Liquid Nitrogen (LN2)

The reservoir dewar can safely stand next to your working place.

When you need a small amount of LN2, the system is ready to supply by only pressing the pumphead on the flange.

By pressing on the pumphead, the system switches ON and starts building a small over pressure, forcing the liquid gently to rise into the flexible fill line, and fall into your storage dewar, or other LN2 container.

After your unlock the pumphead from the dewar, the pressure on the pumphead is released, the system shuts off automatically, and the flow stops.

Where the #405 pump is for small quantities of LN2, and needs to be pushed during pumping, this #455 model can be switched ON and pump for several minutes, but it needs manual to be clicked OFF to degas and stop pumping. This makes this model suitable for filling up a series of storage containers daily, still manual controlled. For automatic controlling with sensors, see our other models.

Usage

The majority of this system find use in the field of scientific instruments, physical laboratories, research centers etc. where small amounts of liquid nitrogen is needed every day for filling up a serie of storage dewars in a gentle way, instead of handling big pressure tanks for just filling up the LN2 which evaporates daily.

This system can also be used for experiments where it is handy to have your supply next to your working place, instead of walking all the way to a fill station and handle big pressure tanks for filling a small container to poor into your experiment.

Use of this system is for example for:

• hand-controlled filling up of storage dewars
• hand-controlled cooling of small objects
• hand-controlled freezing of small samples
• hand-controlled filling of Dry Shippers
• hand-controlled cooling of small chemical reactions

WORKING PRINCIPLE

The pressure above the liquid level inside the dewar is built by heating a small amount of liquid in the bottom of the dewar. 

With only up to 100 mBar of overpressure, the liquid will gentle rise out of the rise pipe and fall into the fill hose.

Because we evaporate some LN2 to build pressure, there is no adding of ice inside the dewar, such as with manual systems which use air from the environment.

In the Norhof LN2 cooling systems Liquid Nitrogen is stored in pressure less Dewars. When LN2 is required, a small overpressure is generated by a small heater element in the LN2, and liquid flows out of the system like water from a tap, without spilling, noise, vibrations etc.

The advantages are numerous:

• the system can deliver LN2 liquid just by clicking the pump on the flange

this means that the system is ready for use 24 hours a day.

• the system delivers LN2 without any pressure

this means without noise, vibration, excessive waste, etc.

• there is no external LN2 valve required

that implies no unnecessary heat input which spoils a lot of LN2

• there is no internal LN2 valve in the pump

LN2 comes out of insulated tubing without making contact to warm metallic parts, so very fast

• there is a very low thermal masse to cool down in the pump

LN2 comes out within 10 to 40 seconds, depending on the level in the dewar.

Filling efficiency is better than 90%, due to very less loss for cooling down pump parts.

• there is a very low thermal connection to the ambient temperature

This means that the system is extremely economic in stand-by. Typical usage less than 0,5 Litre / day

• P.E.D. 99/36/EC (Pressure European Directive) for pressurized vessels does not apply for this system

The maximum possible pressure is lower than 300mBar.Therefore this system is allowed to be used inside the lab, near your working place, without danger.

Technical Specifications

Static evaporation rate	< 0,5 Litres per day
Flow rate	Dripping up to 2 Litre/minute (not adjustable)
Maximum working pressure	< 200 mBar
Protection	Overpressure valve 150 mBar
Reaction time	10-40 seconds (depending on level in dewar)
Power connection	115V / 230V AC with supplied power supply or 12 Volt AC/DC
Power consumption	average 10 Watts, during pumping 50 watts
Storage container volume	25 Litre (on request)	35 Litre	50 Litre
Outside dimensions (round)	395	480	500 mm
Height dimensions	736	643	727 mm
Weight (empty,full)	10 / 31	13 / 41,5	17 / 51,5 kg
Options	Transport trolley 5 wheels (12 cm height)

 

NORHOF Liquid Nitrogen FTIR detector filling system 608

 

Universal automatic filling system for FTIR detectors as from Bruker or Shimadzu.

Plug and play refilling system, to refill the detector at a presetted time interval.  

Usable for overnight measurements

Possible to steer extra filling, so that 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

Norhof manufactures cooling systems in which Liquid Nitrogen (LN2) is used as the cooling medium. LN2 is supplied without any pressure and filling an application is like a teapot filling a teacup.

You may compare our liquid nitrogen dispenser system with a water tap , but instead of giving water, it gives LN2, starting  with some drops, up to 1 Litre/minute.

Liquid Nitrogen (LN2)

The reservoir dewar can safely stand next to your working place, ready for use.

The pump is adjusted with a certain time interval, some shorter than the hold-time of your detector. After this interval time is past, the detector is careful slowly refilled.

Refilling is done with a very gentle steady flow. After the detector is full, the pump stops, and will start again after this time interval, or when an other signal is sent to the pump.

In this way you are sure that your detector is always cold.

The system comes with PCsoftware to read out all what is happening, and to preset the time interval for your detector.

Pump can be steered ON and OFF by 5 Volt signals, or by RS232 commands.

Standard we have adaptors to fit on the Bruker detectors, and Shimadzu AIM8800, but also for other detectors we have adaptors available.

Detailed working is the same as mode 3 for the #905 pump

Usage

The majority of this system find use in the field of laboratories, research centers etc. where FTIR measurements are made and where a safe and unattended refill of LN2 is required.

Use of this system is for example for:

• unattended automatic refill of LN2 for FTIR detectors
• refilling of laser detectors
• overnight measurements
• automatic sequences of measurements
• auto filling of other small LN2 reservoirs, with very low LN2 flowrate

WORKING PRINCIPLE

The pressure above the liquid level inside the dewar is built by heating a small amount of liquid in the bottom of the dewar. 

With only up to 40 mBar of overpressure, the liquid will gentle rise out of the rise pipe and fall into the fill hose.

Because we evaporate some LN2 to build pressure, there is no adding of ice inside the dewar, such as with manual systems which use air from the environment.

In the Norhof LN2 cooling systems Liquid Nitrogen is stored in pressure less Dewars. When LN2 is required, a small overpressure is generated by a small heater element in the LN2, and liquid flows out of the system like water from a tap, without spilling, noise, vibrations etc.

The advantages are numerous:

• the system is extremely safe

the operator comes not in contact with LN2.

• the system is time saving

any operator can install the system on the detector in just minutes.

• the system can cool the detector just with a press on the start button

this means that the detector is cold 24 hours a day.

• the system delivers LN2 without any pressure

this means without noise, vibration, excessive waste, etc.

• there is no external LN2 valve required

that implies no unnecessary heat input which spoils a lot of LN2

• there is no internal LN2 valve in the pump

LN2 comes out of insulated tubing without making contact to warm metallic parts, so very fast

• there is a very low thermal masse to cool down in the pump

LN2 comes out within 1 minute. Detector is filled in ab. 5 minutes

Filling efficiency is better than 90%, due to very less loss for cooling down pump parts.

• there is a very low thermal connection to the ambient temperature

This means that the system is extremely economic in stand-by. Typical usage less than 0,5 Litre / day

• P.E.D. 99/36/EC (Pressure European Directive) for pressurized vessels does not apply for this system

The maximum possible pressure is lower than 300mBar.Therefore this system is allowed to be used inside the lab, near your working place, without danger.

Technical Specifications

Static evaporation rate	< 0,5 Litres per day
Flow rate	preset on 35 mBar (adjustable with the supplied software)
Maximum working pressure	< 300 mBar
Reaction time	ab. 1 minute for cooling down the fill line, 3 minutes for filling.
Power connection	115V / 230V AC with supplied power supply or 12 Volt AC/DC
Power consumption	average 10 Watts, during pumping 50 watts
Storage container volume	25 Litre (on request)	35 Litre (standard)	50 Litre
Outside dimensions (round)	395	480	500 mm
Height dimensions	736	643	727 mm
Weight (empty,full)	10 / 31	13 / 41,5	17 / 51,5    kg
System includes	Dewar, pump, fill line 1.60 m, power supply, cables, level sensor, PC software.
External steering	5 volt signals for ON, OFF RS232 signals for ON, OFF
PC software	Monitor software, to monitor pump behavior, to preset refill time interval, filling height and flow rate.
Alarms/warning                 acoustical/ visual / mechanical	Dewar empty, 5 Litres left, broken sensor, overpressure protection
Options	Adaptor with sensor for Bruker detectors Adaptor for Shimadzu AIM8800 or similar Transport trolley 5 wheels (12 cm height) Stand for pump (when dewar is refilled)

NORHOF Liquid Nitrogen Freezer Backup System 607

 

Universal applicable portable backup unit for mechanical freezers.

Suitable for mechanical freezers of –85  degrees Celsius (or similar)

Do you want only ONE backup system, suitable for all your mechanical freezers?

• Always ready to use
• Every freezer will be prepared with extra cold exchanger.
• One portable backup pumpsystem, for use with up to 20 freezers.
• Connection of pumpsystem to broken freezer in just two minutes.
• No opening of the freezer needed.
• Start of cooling after switched ON in just one minute
• Cooling temperature to exact -85, also on the top shelf of the freezer.
• Pressure-less flow of LN2, without spilling, noise, vibrations etc. 
• Reservoir dewar of 50 Litres sufficient for holding the freezer for 24 hours on -85 (depending on brand and model of the freezer) 

Norhof manufactures cooling systems in which Liquid Nitrogen (LN2) is used as the cooling medium. LN2 is supplied without any pressure and filling an application is like a teapot filling a teacup.

You may compare our liquid nitrogen dispenser system with a water tap , but instead of giving water, it gives LN2, starting  with some drops, up to 1 Litre/minute.

Liquid Nitrogen (LN2)

 The reservoir dewar can safely stand next to your working place, ready for use.

When a freezer needs extra cooling, connect the pomp hose to the freezer. Switch the pump ON.

The pump will gently fill the cold exchanger with LN2, depending of the temperature in the top of the freezer. The cold exchanger will become –196 degrees Celsius, creating a falling cold flow. The warmer gas from the top will be exhausted, thus cooling the interior of the freezer from the bottom to the top. The level in the cold exchanger is controlled, and the temperature in de top is controlled, so the pump stops automatically when the temperature of -85 is reached.

Usage

The majority of this system find use in the field of laboratories, research centers etc. where a backup system should be stand-by in case of incidents with freezers, or during maintenance of a freezer.

Use of this system is for example for:

• Backup of freezers during maintenance
• Backup of freezers during failure
• Extra cooling when a lot of warm samples is placed in a freezer.

WORKING PRINCIPLE

The pressure above the liquid level inside the dewar is built by heating a small amount of liquid in the bottom of the dewar. 

With only 100 mBar of overpressure, the liquid will gentle rise out of the rise pipe and fill the cold exchanger in the freezer.

Because we evaporate some LN2 to build pressure, there is no adding of ice inside the dewar, such as with manual systems which use air from the environment.

In the Norhof LN2 cooling systems Liquid Nitrogen is stored in pressure less Dewars. When LN2 is required, a small overpressure is generated by a small heater element in the LN2, and liquid flows out of the system like water from a tap, without spilling, noise, vibrations etc.

The advantages are numerous:

• the system is extremely safe

the operator comes not in contact with LN2.

• the system is time saving, and thus sample saving

any operator can install the system on a freezer in just minutes.

• the system can cool the freezer just with a press on the start button

this means that the system is ready for use 24 hours a day, and starts cooling in 3 minutes.

• the system delivers LN2 without any pressure

this means without noise, vibration, excessive waste, etc.

• there is no external LN2 valve used

that implies no unnecessary heat input which spoils a lot of LN2

• there is no internal LN2 valve in the pump

LN2 comes out of insulated tubing without making contact to warm metallic parts, so very fast

• there is a very low thermal masse to cool down in the pump

Filling efficiency is better than 90%, due to very less loss for cooling down pump parts.

• there is a very low thermal connection to the ambient temperature

This means that the system is extremely economic in stand-by. Typical usage less than 0,5 Litre / day

• P.E.D. 99/36/EC (Pressure European Directive) for pressurized vessels does not apply for this system

The maximum possible pressure is lower than 300mBar.Therefore this system is allowed to be used inside the lab, near your working place, without danger.

Technical Specifications

Static evaporation rate	< 0,5 Litres per day
Flow rate	Dripping up to 1 Litre/minute
Maximum working pressure	< 300 mBar
Reaction time	40-80 seconds (depending on level in dewar)
Power connection	115V / 230V AC with supplied power supply or 12 Volt AC/DC
Power consumption	average 10 Watts, during pumping 50 watts
Storage container volume	25 Litre(on request)	35 Litre(on request)	50 Litre (standard)
Outside dimensions (round)	395	480	500 mm
Height dimensions	736	643	727 mm
Weight (empty,full)	10 / 31	13 / 41,5	17 / 51,5 kg
System includes	Dewar, pump, flexible fill hose 1.00 m, power supply
Alarms/warning                 acoustical/ visual / mechanical	Dewar empty, 5 Litres left, broken sensor, overpressure protection
per freezer, backup kit	Cold exchanger, including level sensor and temperature sensor, exhaust tube. Connection box, including cryo connector for pomp hose
included	Transport trolley 5 wheels (12 cm height)
Options	Clamp for pump to hang on rear side of a freezer

NORHOF Liquid Nitrogen Dispensing System 405

picture shows pump mounted on a 35 Litre dewar possible dewars are 25, 35 or 50 Litre pump can be used on other type dewars as long as the dewar has a NW50 flange	total system height 60 cm

Low cost hand controlled Liquid Nitrogen Dispensing system

• Safe filling of small vessels
• Hand controlled administration of smaller amounts of LN2, for filling small dewars or samples
• Low flow, starting by pressing on pumphead.
• Pressure-less flowing LN2, without spilling, noise, vibrations etc. 

Norhof manufactures cooling systems in which Liquid Nitrogen (LN2) is used as the cooling medium. LN2 is supplied without any pressure and filling an application is like a teapot filling a teacup.

You may compare our liquid nitrogen dispenser system with a water tap , but instead of giving water, it gives LN2, starting  with some drops, up to 1 Litre/minute.

Liquid Nitrogen (LN2)

The reservoir dewar can safely stand next to your working place. When you need a small amount of LN2, the system is ready to supply by only pressing on the pumphead. By pressing on the pumphead, the system switches ON and starts building a small over pressure, forcing the liquid gently to rise into the fill line, and fall into your little dewar, or other small LN2 container.

After your pressure on the pumphead is released, the system shuts off automatically, and the flow stops.

Usage

The majority of this system find use in the field of scientific instruments, physical laboratories, research centers etc. where small amounts of liquid nitrogen is needed every day for experiments, and where it is handy to have your supply next to your working place, instead of walking all the way to a fill station and handle big pressure tanks for filling just a tea cup of LN2.

Use of this system is for example for:

• hand-controlled filling of small dewars
• hand-controlled cooling of small objects
• hand-controlled freezing of small samples
• hand-controlled filling of Dry Shippers
• hand-controlled washing of Xtals
• hand-controlled cooling of small chemical reactions

*For automatic administration we have the #900 series of microdosing pumps

WORKING PRINCIPLE

The pressure above the liquid level inside the dewar is built by heating a small amount of liquid in the bottom of the dewar. 

With only up to 100 mBar of overpressure, the liquid will gentle rise out of the rise pipe and fall into the fill hose.

Because we evaporate some LN2 to build pressure, there is no adding of ice inside the dewar, such as with manual systems which use air from the environment.

In the Norhof LN2 cooling systems Liquid Nitrogen is stored in pressure less Dewars. When LN2 is required, a small overpressure is generated by a small heater element in the LN2, and liquid flows out of the system like water from a tap, without spilling, noise, vibrations etc.

The advantages are numerous:

• the system can deliver LN2 liquid just with a press on the pump head

this means that the system is ready for use 24 hours a day.

• the system delivers LN2 without any pressure

this means without noise, vibration, excessive waste, etc.

• there is no external LN2 valve required

that implies no unnecessary heat input which spoils a lot of LN2

• there is no internal LN2 valve in the pump

LN2 comes out of insulated tubing without making contact to warm metallic parts, so very fast

• there is a very low thermal masse to cool down in the pump

LN2 comes out within 10 to 40 seconds, depending on the level in the dewar.

Filling efficiency is better than 90%, due to very less loss for cooling down pump parts.

• there is a very low thermal connection to the ambient temperature

This means that the system is extremely economic in stand-by. Typical usage less than 0,5 Litre / day

• P.E.D. 92/23/EC (Pressure European Directive) for pressurized vessels does not apply for this system

The maximum possible pressure is lower than 300mBar.Therefore this system is allowed to be used inside the lab, near your working place, without danger.

Technical Specifications

Static evaporation rate	< 0,5 Litres per day
Flow rate	Dripping up to 1 Litre/minute (not adjustable)
Maximum working pressure	< 300 mBar
Reaction time	10-40 seconds (depending on level in dewar)
Power connection	115V / 230V AC with supplied power supply or 12 Volt AC/DC
Power consumption	average 10 Watts, during pumping 50 watts
Storage container volume	25 Litre(on request)	35 Litre	50 Litre
Outside dimensions (round)	395	480	500 mm
Height dimensions	736	643	727 mm
Weight (empty,full)	10 / 31	13 / 41,5	17 / 51,5 kg
Options	Transport trolley 5 wheels (12 cm height)