​Model T750
with NumaView™ S​oftware

​Portable Gas Calibrator​​​




  • 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 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)
  • Gas phase titration chamber (GPT) (optional)
  • Ozone generator and photometer allow use as a primary or transfer standard (optional)
  • Inlets for external ozone reference sources
  • Two-year warranty


08348C_Addendum, NVS T-Series Calibrators.pdfNumaView™ Software Addendum for Calibrators7612 KB
083730750C - MANUAL, NVS, USER, T750 T750U.pdfT750/T750U with NumaView™ Software Manual10632 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
SAL000076K - Environmental Instruments Overview.pdfEnvironmental Instruments Overview610 KB
SAL000085I - T750.pdfT750 Specification1530 KB
SAL000085J-CN T750.pdfT750规格 (Chinese Specification)3452 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
Flow Range of Cylinder Gases* 0 - 100 cc/min
Optional Ranges 0 - 50 cc/min, 0 - 200 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
Diluent Gas Input Port 1
​​Ozone Generator Module Option
Maximum Output 5.5 ppm LPM
Minimum Output 100 ppb LPM
Response Time 180 seconds to 98%
​​UV Photometer Option

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)
​​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) 9” x 17” x 21” (229 x 432 x 533 mm)
We​ight 37 lbs (16.78 kg)
46.6 lbs (21.14 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 T750 is a portable, 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.  The T750 is housed in a high-density, molded travel case which includes an integral handle and wheels for durability and ease of use in the field.

The Model T750 can be equipped with an optional UV ozone generator for accurate, dependable ozone calibrations, and 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 GPT.  A number of calibration sequences may be programmed into the non-volatile memory of the Model T750, covering time periods up to a year.

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 T750 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.