nHT Series

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High Vacuum

The nHT series offers superior vacuum performance. The pumps have been designed for optimum heat transfer into the oil resulting in faster heat up times with a significant reduction in energy consumption.

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Performance Stability

The optimised pumping speed and stable high throughput is ideal for the critical Coating, Metallurgy, Heat Treatment and R & D applications.

Reliability and increased productivity

The smart temperature control and on board sensors ensure minimum load with longer lifetime for heaters and oil. The non-wear components and easy-change heater cartridges ensure extended intervals between service and maintenance.

Energy Efficiency Controller

The Energy Efficiency Controller enables ease of use and operating convenience along with effective monitoring with USB and Ethernet interface. The innovative heating design provides a faster warm up time and enables up to 30% energy savings.

Modern industrial two-stage oil sealed rotary vane pump

nEXT has been designed to combine all the latest technological advances in turbomolecular pumps offering pump sizes of 55, 85, 240, 300, 400, 730, 925 and 1250 l/s pumping speeds for Nitrogen these pumps provide end-user serviceability and deliver a truly class leading product.

MODERN DESIGN MADE SIMPLE

Economical product with clean layout
Built-in oil filter to protect pump mechanism from contaminants and prevent oil leaks
Innovative design to increase cooling performance keeping high vapour tolerance
No complex mechanical arrangement to keep technology simple

GREAT USABILITY

Effective product design to accommodate users needs
Easy and pleasant to use and service. Cleaning on site to maximise uptime
Efficient over-temperature protection and low oil level detection (optional features)
Increased safety against operator misuse

The ideal solution for demanding industrial applications

Highest throughput of comparative sized pumps.
Earliest crossover pressure of similar sized pumps.
Excellent maximum backing line pressure and tolerance to gas surges.
Comparative pumping speed to similar sized pumps.
Integral cold cap for best performance and low back streaming.
Self fractionating for low ultimate pressures.
Easy change heater assembly.

Technical Specifications

		nHT10		nHT16		nHT20		nHT32		nHT35
		ANSI	ISO	ANSI	ISO	ANSI	ISO	ANSI	ISO	ANSI	ISO
Inlet connection		10˝ ANSI	320 ISO-K	16˝ ANSI	500 ISO-K	20˝ ANS	630 ISO-K	32” ANSI	800 ISO-F	35˝ ANSI	1000 ISO-F
Backing connection		2˝ ANSI	63 ISO-K	3” ANSI	100 ISO-K	4˝ ANSI	160 ISO-K	6” ANSI	200 ISO-K	6” ANSI	200 ISO-K
Pumping speed^* Nitrogen <10^-4 mbar	l/s	3,000		6,800		10,000		21,000		30,000
Pumping speed Argon <10^-4 mbar	l/s	2,750		6,350		9,000		18,000		26,000
Pumping speed Helium <10^-4 mbar	l/s	4,500		9,500		17,000		30,000		42,000
Gas throughput	mbar l/s	8		11		17		36		36
Operating range	mbar	< 10^-1 to 10^-7		< 10^-1 to 10^-7		< 10^-1 to 10^-7		<10^‐2 to 10^‐7		< 10^-2 to 10^-7
Ultimate pressure (Edwards 704)	mbar	< 5 x 10^-7		< 5 x 10^-7		< 5 x 10^-7		< 10^‐6		< 10^-6
Critical backing pressure (Edwards 704)	mbar	5 x 10^-1		5 x 10^-1		5 x 10^-1		5 x 10^-1		5 x 10^-1
Heating power	kW	3.6		7.2		10.8		21.6		21.6
Heating cartridges	qty	3		6		9		18		18
Warm-up period	min	< 15		< 15		< 25		< 25		< 25
Weight	kg	105		185		210		570		720
Recommended oil		Edwards 704
Oil	l	3.0-4.0		3.5-4.5		5.5-7.0		9.0-11.0		9.0-11.0
Recommended holding pump		E2M40		E2M40		E2M40		E2M80		E2M80
Recommended backing pump		nES200, E2M80, EDS200, EH1200		nES200, E2M175, EDS200, EH1200		nES300, E2M175, EDS300, EH1200		nES630, E2M275, GXS450, EH2600		nES630, E2M275, GXS450, EH2600
* Measures as per DIN 28 427

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