Envitech LTD Europe

Model T700

Dynamic Dilution Calibrator
 

Main Features

• Generates precise calibration gases for SO2, H2S, NO, NO2, CO, O3, and others
• Large, vivid, and durable color graphics display with touch screen interface
• Ethernet, RS-232, and (optional) USB com ports
• Front panel USB connections for peripheral devices and firmware upgrades
• 12 independent timers for sequences
• Nested sequences (up to 5 levels)
• Software linearization of mass flow controllers (MFC)
• 4 calibration ports (configurable for single or multi-blend gases) 

General Aspects

The Model T700 is a microprocessor based calibrator for precision gas analyzers.  Using highly accurate mass flow controllers combined with compressed sources of standard gases, calibration standards are provided for multipoint span and zero calibrations using up to 4 gas sources.
The Model T700 can be equipped with an optional UV ozone generator for accurate, dependable ozone calibrations, and to enable production of NO2 when blended with NO gas in the included, internal gas phase titration (GPT) chamber.  An optional photometer allows even more precise control of the ozone generator giving accurate and dependable ozone calibrations and enhanced GPTs.  To ensure the highest accuracy of NO2 output, the T700 with the photometer option can measure the ozone concentration prior to performing a GPT.  A nearly unlimited number of calibration sequences may be programmed into the non-volatile memory of the Model T700, covering time periods up to a year.
All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability.  All instrument set up, control and access to stored data and diagnostic information is available through the front panel, or via RS232, Ethernet, or USB com ports either locally or by remote connection using the included APIcom™ software.

Main Specifications

Dilution System:

• Flow Measurement Accuracy: ± 1% of full scale
• Repeatability of Flow Control: ± 0.2% full scale
• Linearity of Flow Measurements: ± 0.5% full scale
• Input Pressure: 20-40 psig
• Calibration Gas Input Ports: 4 (configurable)
• Diluent Gas Input Ports: 1

Ozone Generator Module:

• Maximum Output: 6 ppm LPM
• Minimum Output: 100 ppb LPM
• Response Time: 180 seconds to 98%
• Stability (7 days): 1% with photometer option; 3% without photometer option
• Linearity: 1% with photometer option; 3% without photometer option
• UV Photometer Option
• Range: 0-100 ppb to 0-10 ppm (selectable)
• Precision: 1.0 ppb
• Linearity: 1.0% of reading
• Zero Drift: < 1.0 ppb/24 hours
• Span Drift: < 1%/24 hours

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Model 701

Zero Air Source

Main 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, and H2S
• Optional CO or CO and Hydrocarbon scrubber
• Automatic water drain  and pump control based on flow demand
• May be used to provide combustion air for FID (with HC Scrubber option)
• Source of purge air for permeation tube ovens
• Zero air for Ozone Generators  

General Aspects

The Model 701 is an excellent source of clean, dry air for dilution calibrators. 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 -20°C (up to 15 SLPM flow rate) independent of the inlet dewpoint and assists in the removal of other gases, greatly increasing the life of the chemical scrubbers.
The basic Model 701 includes an oil and diaphram free pump plus scrubbers to remove SO2, NO, NO2, O3 and H2S. Optional high performance scrubbers are available to remove CO and Hydrocarbons.
Inlet air is pulled into the pump and routed through a pre-cooler 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. 

Main Specifications

• Output: 20 SLPM @ 30 psig
• Dewpoint: -20°C up to 15 LPM; -10°C above 15 LPM
• Dryer: Regenerative heatless dryer with lifetime of greater than 5 years
• Output concentrations (maximum): SO2 < 0.5 ppb; NO < 0.5 ppb; NO2 < 0.5 ppb; O3 < 0.5 ppb;CO < 0.025 ppm (requires optional scrubber)
• Hydrocarbons < 0.02 ppm (requires optional scrubber)
• 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) 
• Power requirements: 100V 50/60 Hz, 115V 60 Hz, 220V 50/60 Hz, 230V 50 Hz, 240V/50 Hz, 400 Watts
• Approvals: CE
   

Download Datasheet