TAPI - Model T750U -Trace Level Portable Gas Calibrator

The Model T750U is designed for the demanding requirements of trace-level measurements.  The ability to calibrate and verify linearity for NO₂ levels below 5 ppb is difficult with standard calibrators.  To overcome this limitation, the Model T750U ozone generator operates in two modes; a high range with similar performance to the Model T750 ozone generator, and a low range, or "fractional" mode, for producing accurate ozone levels down to 3 ppb.  To ensure the highest accuracy of NO₂ output, the calibrator measures the ozone concentration prior to performing a gas phase titration (GPT), and the range is selected automatically by the Model T750U based on ozone concentration and flow specified by the user.

All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, and flexible I/0.  All instrument set up, control and diagnostic information is available through the front panel, or via RS232, Ethernet, or the optional USB com port, either locally or by remote connection.

The Model T750U comes with NumaView™ Software.  NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software. 

• Stable and accurate ozone output to 3 ppb
• Stable and accurate Gas Phase Titration (GPT) to 3 ppb NO₂
• Built-in photometer, ozone generator, and GPT chamber
• Large, vivid, and durable color graphics display with touch screen interface
• Ethernet, RS-232, and (optional) USB com ports
• Front panel USB ports for peripheral devices and firmware upgrades
• Nested sequences (up to 5 levels)
• Software linearization of mass flow controllers (MFC)
• 3rd MFC for wide dynamic range (optional)
• Glass GPT chamber
• Inlet for external ozone reference sources
• Two year warranty

• Dilution System:
• Flow Measurement Accuracy : ± 1% of full scale
• Repeatability of Flow Control : ± 0.2% of full scale
• Linearity of Flow Measurements : ± 0.5% of full scale
• Flow Range of Dilution Air : 0 - 10 SLPM
• Optional Ranges : 0 - 5 SLPM, 0 - 20 SLPM (others available)
• Flow Range of Cylinder Gases* : 0 - 200 cc/min
• Optional Ranges : 0 - 50 cc/min, 0 - 100 cc/min (others available)
• Zero Air Requirements : 10 SLPM @ 30 psi
• Optional Ranges : 20 SLPM @ 30 psi
• Input Pressure : 20 - 40 psig
• Calibration Gas Input Port : 1 (configurable)
• Diluent Gas Input Port : 1
• NO2 Generation (GPT Modes):
• Minimum Output : 20 ppb LPM
• Minimum Concentration : 3 ppb
• Precision : ±2% (with GPTPS)
• Ozone Generator Module:
• Maximum Output : 4.5 ppm LPM
• Minimum Output : 20 ppb LPM
• Minimum Ozone Concentration : 3 ppb
• Response Time : 180 seconds to 98%
• UV Photometer Option:
• Range : 0 - 100 ppb to 0 - 10 ppm (selectable)
• Precision : 1.0 ppb
• Linearity : 1.0% of reading
• Rise/Fall Time : < 20 seconds (photometer response)
• Response Time : 180 seconds to 95% (system response)
• Zero Drift : < 1.0 ppb/24 hours
• Electrical Specifications:
• Power Requirements : 85V - 264V, 47Hz - 63Hz
• Analog Output Ranges : 10V, 5V, 1V, 0.1V (selectable)
• Communications Specifications:
• Included I/O :
• 1 x Ethernet: 10/100Base-T
• 2 x RS232 (300-115,200 baud)
• 2 x USB device ports
• 12 x digital control outputs
• 12 x digital control inputs
• 8 x digital status outputs
• Optional I/O :
• 1 x USB com port
• 1 x RS485
• Multidrop RS232
• Physical Specifications
• Operating Temperature Range : 5 - 40ºC
• Dimensions (HxWxD) : 9” x 17” x 21” (229 x 432 x 533 mm)
• Weight : 46.6 lbs (21.14 kg)