Non Evaporable Getter (NEG) Pumps

	Features and Applications
	NEG pump is a kind of chemisorption pump, which assembled after the NEG alloy heated by high sintering, It could eliminates large amounts of residual gases in a vacuum environment, mainly applied for UHV testing or Lab equipment. When it’s activated NEG pumps could operating without power, also free of Vibration and Nonmagnetic. The highlight of the NEG pumps it's extremely effective for Hydrogen and other active gases, and would never reduce under the UHV.
	Basic Characteristics and General Data
	Product Type length of Cartridge (mm) Getter Weight (g) Flange size Activation Power(W) Activation Temperature (℃) Reactivations (sorption cycles) NP-TMKZ-100 62 18 CF35 25 450 ≥100 NP-TMKZ-200 88 35 CF35 45 450 ≥100 NP-TMKZ-400 135 70 CF35 85 450 ≥100 NP-TMKZ-1000 142 180 CF63 220 450 ≥100 NP-TMKZ-1600 145 420 CF100/CF150 450 450 ≥100 NP-TMKZ-2000 195 630 CF100/CF150 680 450 ≥100
	Product Type   Pumping Speed(l/s)     Sorption Capacity?(Torr l) H2 H2O N2 CO H2 H2O N2 CO NP-TMKZ-100 100 75 25 45 600 5 0.175 0.35 NP-TMKZ-200 200 145 45 90 1160 10 0.35 0.7 NP-TMKZ-400 400 290 95 180 1920 20 0.7 1.4 NP-TMKZ-1000 800 580 185 360 5600 50 1.7 3.5 NP-TMKZ-1600 1600 1160 370 720 11520 120 4 8 NP-TMKZ-2000 2000 1450 450 900 17280 180 6 12
	Suggested Activation Conditions
	It is recommended that the user use a constant current power supply to energize and activate the NEG Pump. Recommended activation conditions: Energizing activation at 450°C for 45min, the vacuum degree of the system in the whole process of activation should be better than 0.01Pa. Proper extension of the time will facilitate full activation of the NEG Pump. If the standard activation temperature cannot be reached, the activation time must be extended to compensate. It is necessary to ensure the vacuum degree of the vacuum chamber during the activation process, if the vacuum is too low, the following defects may occur: heater sputtering, suction material pollution, abnormal activation temperature and other adverse conditions. The NEG Pump releases a certain amount of gas during activation, in order to ensure the vacuum degree during the activation of the NEG Pump. We recommend that the NEG Pump should be activated under dynamic vacuum, and the activation process should be slowly and gradually increased from 1.5A until the predetermined current value is reached, the rapid deflation and the change of electrical parameters caused by the rapid change of the temperature of the NEG Pump must be avoided.
	Caution
	●When activated and working, the NEG Pump casing and flange have a high temperature, pay attention to prevent burns. ●When the NEG Pump is at high temperature, it must be in vacuum conditions to avoid failures due to contamination and consumption. ●When connecting the power supply, ensure that the connection between the power supply and the flange electrode is firm, and pay attention to the insulation with other parts. ●Before heating activation, pay attention to ensure that the system is under vacuum conditions that meet the requirements. ●Under special circumstances, in order to make the NEG Pump have a high pumping speed for C, N, O and other gases, the working temperature can be maintained in the range of 200 °C ~ 250 °C (energized 2.5A), at which time the ultimate vacuum degree that the NEG Pump can achieve is reduced.