​Model T700U
​​with NumaView™ Software

Trace-Level Dilution Calibrator​


  • 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 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)
  • 3rd MFC for wide dynamic range (optional)
  • Glass gas phase titration chamber (GPT)
  • Inlets for external ozone reference sources
  • Two-year warranty


083730700D - MANUAL, USER, NVS, T700, T700U.pdfT700/T700U with NumaView™ Software Manual11299 KB
22-002A REST API Tutorial For Numaview Instruments - GCAL-O3.pdfREST API Tutorial for NumaView Instruments584 KB
ESD Fundamentals - 04786.pdfFundamentals of Electro-Static Discharge (ESD)216 KB
NVS Remote Manual - 08492.pdfNumaView™ Software Remote User Guide867 KB
SAL000063I - T700U.pdfT700U Specification1159 KB
SAL000063J-CN T700U.pdfT700U规格 (Chinese Specification)922 KB
SAL000076K - Environmental Instruments Overview.pdfEnvironmental Instruments Overview610 KB
T SERIES_6PG.BROCHURE_2018_web.pdfT Series with NumaView™ Software Brochure9567 KB


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 required
Calibration Gas Input Ports 4 (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 6 ppm LPM
Minimum Output 20 ppb LPM
Minimum Ozone Concentration 3 ppb
Response Time 180 seconds to 98%
Optical Feedback Standard
​​UV Photometer Option
Range 100 ppb to 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
Power Requirements 85V - 264V, 47Hz - 63Hz
Analog Output Ranges 10V, 5V, 1V, 0.1V (selectable)
Recorder Offset ±10%
​​Communication 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) 7” x 17” x 24” (178 x 432 x 609 mm)
Weight 31 lbs (14.06 kg); 39.2 lbs (17.78 kg) with photometer, GPT, and O3 generator​
* Can select 3rd MFC option for wider dynamic range​

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


The Model T700U is a microprocessor based calibrator for precision, trace-level gas analyzers.  Using highly accurate mass flow controllers combined with compressed sources of standard gases, calibration standards are provided for multipoint span and zero checks using up to 4 gas sources.

In addition to the features of the Model T700, the Model T700U is designed for the demanding requirements of trace-level measurements.  The ability to calibrate and verify linearity for NO2 at levels below 50 ppb is difficult with standard calibrators.  To overcome this limitation, the Model T700U ozone generator operates in two modes; a high range with similar performance to the Model T700 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 GPT, and the range is selected automatically by the Model T700U 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, 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.​

The Model T700U 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. ​