NHS-35

Category: Diffusions Pumps Available
For more information, visit our official website at elsotech.com.my

Description

Available in 2 in. and 16 in. through 35 in. sizes, the low-cost HS-series pumps provide high speed, low ultimate pressure, high throughput, high tolerable forepressure, and low backstreaming. The HS-Series diffusion pumps come with full thermal protection and optional quick-cool coils. The 16 in. through 35 in. pumps come with sight glass/fill and drain assemblies, and are available with ASA or ISO flanges.

Technical Specifications

Pumping Speed, Operating Range Pumping Speed, AVS 4.1 (1963) 28,000 l/s air, 35,000 l/s He and H2 50,000 l/s Air
Maximum Throughput 25 T-l/s (33 mbar l/s) in operating range, 35 T-l/s (45 mbar-l/s) @ 0.01 torr
Operating Range 9 x 10-4 to < 5 x 10-8 torr (1.2 x 10-3 < 6.5 x 10-8 mbar)
Maximum Forepressure No Load – 0.55 torr (0.71 mbar), Full Load – 0.40 torr (0.52 mbar)
Recommended Backing Pump ≥ 300 cfm (510 m3/hr)
Backstreaming Rate, Standard Cold Cap <5 x 10-4 mg/cm2/min
Warmup Time 60 minutes
Cooldown Time 180 minutes
Fluid Charge 3 U.S. gallons (11.3 liters)
Electrical Requirements 3 ph, 50/60 Hz, 240/415/480 VAC
Pump Power 24,000 watts
Cooling Water Requirements 4 gpm (800 l/hr) at 60-80°F (15-26°C)
Recommended Fluid DC-704

 

Speed Curve Graph

NHS-35 Diffusion Pump Speed Curve Graph

Pumping Speed/Cold Cap Pumping speed/Halo Baffle Throughput

 

Outline Drawing

NHS-35 Diffusion Pump Outline Drawing
 


Ordering Details
Description Voltage Weight kg (lbs) Part Number
HS-35 Pump     Flange Type
Electrical Requirements     ASA ISO
NHS-35 with standard cold cap 240 V 680.0 (1,550.0) F1730308 L5924308
NHS-35 with halo baffle 240 V 680.0 (1,550.0) F1730318 L5924318
NHS-35 with standard cold cap 415 V 680.0 (1,550.0) F1730326 L5924326
NHS-35 with halo baffle 415 V 680.0 (1,550.0) F1730336 L5924336
NHS-35 with standard cold cap 480 V 680.0 (1,550.0) F1730309 L5924309
NHS-35 with halo baffle 480 V 680.0 (1,550.0) F1730319 L5924319
Accessories Weight kg (lbs) Part Number
Water-cooled halo baffle 20.0 (45.0) K1857335
Quick cool coil must be installed in the factory, can not ship separately   F1739001
Centering ring for ISO foreline flange, 200K 0.5 (1.0) IC200SV
O-ring, ISO Inlet flange 0.5 (1.0) 78536002
Instruction manual   699901140
Replacement Parts (six heaters required per pump)
Heater 4000 W, 240 V/480 V with leads 0.5 (1.0) 647335010
Heater 4000 W, 240 V/480 V no leads used on pumps built before May 90 0.5 (1.0) 647235248
Heater, 4000 W, 200 V 0.5 (1.0) 647335020
Heater, 4000 W, 400 V 0.5 (1.0) L6383010
Heater, 4000 W, 440 V 0.5 (1.0) L6383011
Heat shield (reusable) 0.5 (1.0) L6370001
Heater clamping plate (six required per pump) 4.0 (8.0) F1749001
Heater insulator (one required per pump) 0.5 (1.0) L9699001
Replacement o-ring kit for ASA pumps (kit contains: 1 inlet flange o-ring (buna 78536001), 1 foreline flange o-ring (butyl 2-267), sight glass o-ring and gasket, 8 fill and drain o-rings (Viton 2-213)) 0.5 (1.0) K0377169
Sightglass service kit (pumps built before Oct. 95) 1.5 (3.0) F6097301
Upper (water) thermal switch (set at 200° F/93 °C) 0.5 (1.0) K9050005
Lower (boiler) thermal switch (set at 600° F/316 °C) 0.5 (1.0) K9050006
Cold cap gasket/grommet (kit of 4) 0.5 (1.0) L8839301
Cold cap nut and follower (2 each) 0.5 (1.0) L8840301
Heater Retrofit Kit (for pumps built before May 90; clamping plates not included)
NHS-35, 240/400/440 18.16 (40.0) L6391308
NHS-35, 415 18.16 (40.0) L6391326
NHS-35, 480 18.16 (40.0) L6391309
 

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ELSO Technologies Sdn Bhd Test & Measurement Equipment Distributor Penang, Malaysia, NetAlly, Rigol, Cromwell Distributor Singapore, Selangor, KL, Sarawak ~ ELSO Technologies Sdn Bhd
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