Gas Calibrators & ZAG
​​​​​​​​​​​​​​​​​​​​​ Conta​​​ct us
Traini​ng
Sales Contacts
Request a Quote
Terms & Conditions
​​ ​
​​

 

​Model 701H

​ High Performance Zero Air System

 

Features

  • Standard two year warranty
  • Regenerative, heatless dryer for maintenance-free water removal independent of inlet dewpoint
  • Long life scrubbers for SO2, NO, NO2, O3, H2S, NH3, CO and Hydrocarbons
  • Dewpoint sensor/alarm
  • Automatic water drain
  • Automatic pump control based on flow demand
  • Ideal zero air for "trace level" or "ultrasensitive" measurement applications
  • May be used to provide combustion air for FID
  • Source of purge air for permeation tube ovens
  • Zero air for Ozone Generators

 

Maintenance

​The following table provides a list of items that  need regular maintenance to ensure your product remains in good working condition.

Item

Action

Frequency

Manual Section

Charcoal Scrubber

Replace

Annually

6.4

NO-NO2 Scrubber (Purafil)

Replace

Annually

6.5

CO Scrubber
(T701 & 701, option only)

Replace

When Contaminated

6.7

HC Scrubber
(T701 & 701, option only)

Replace

When Contaminated

6.8

Regenerative Dryer

Replace

When Contaminated

6.9

Particulate Filter
(“Air In” on Rear Panel)

Replace

Annually

6.13 ​


 

  ​

Downloads

  
  
  
06712B - M701H Manual.pdf701H Manual1594 KB
701H.pdf701H Specification196 KB

Specifications


Output 30 SLPM @ 35 psig
Dewpoint -40°C ≤ 30 LPM (typ.@60Hz)
Dryer Regenerative heatl​​ess dryer with lifetime of greater than 5 years
Output Concentrations (maximum) SO2 < 0.025 ppb
H2S < 0.025 ppb
NO < 0.025 ppb
NO2 < 0.025 pp​b
NH3 < 0.025 ppb
O3 < 0.3 ppb
CO < 10 ppb  
Hydrocarbons < 0.25 ppb 
Pump Internal long life, oil-less piston pump
Mounting Bench type mounting, rack mount optional
Dimensions (HxWxD) 8.75” (22.2 cm) x 17” (43.2 cm) x 28” (71.12 cm)
Weight 69 lbs (31 kg)
Power Requirements



Specifications are subject to change without notice.
All specifications are based on constant conditions.​

115V, 60 Hz
220V-240V, 50/60 Hz

Description

 

The Model 701H is an excellent source of high purity zero air for all your process and analytical instrument needs. It is ideal for use with highly sensitive analyzers in ambient background and trace level applications. It also may be used as a source of purge air for permeation tube ovens or burner air for FID analyzers.

The regenerative, heatless dryer removes water and produces gas with a dewpoint of less than -25°C (dependant on flowrate). and assists in the removal of other gases, greatly increasing the life of the chemical scrubbers.

The Model 701H includes a high flow rate oil and diaphragm free pump, scrubbers to remove SO2, NO, NO2, O3, H2S and NH3 and high performance scrubbers to remove CO and Hydrocarbons. The 701H also incorporates a dewpoint sensor that warns if the dewpoint exceeds -16°C.

Inlet air is pulled into the pump and routed through a precooler and water trap to remove moisture. The air then passes through the regenerative scrubber for final drying and then to the storage tank.

Tank pressure is monitored and maintained at a preset level by cycling the pump automatically as needed, thereby extending both the pump and scrubber life.

Outlet air then passes through a filter to assure a clean, dry, analytical zero air supply.
A microcontroller cycles the regenerative dryer and water trap valves preventing the pump from starting against full head pressure.