The 9GS is part of our gas sensor family for high CO2 concentrations (0–5% and 0–25%), typically used in atmospheric
control equipment for incubators and food storage, transportation and processing. It uses a proven, discriminating non–dispersive
infrared (NDIR) sensors with a second lamp acting as a reference channel for improved long–term stability.
Combined with TI's use of a second lamp as a reference channel and our patented software, the 9GS units only need to be calibrated every 3 years and attain excellent:
- long–term stability
- accuracy
- repeatability
Specifications |
Sensing Method |
Non Dispersive Infrared (NDIR) |
Sampling Mode |
Diffusion and/or pump capability |
Range |
9GS-1 0.25%
9GS-4 0-5%
(and field selectable with CAL-B-Key) |
Accuracy
(@25°C,760mm Hg) |
±5% volume or 5% of reading, whichever is greater |
Pressure Effect |
0.19% of reading per mm Hg |
Warm–up |
<90 seconds |
Response Time |
< 20 seconds to 63% of step change @500 ml/min flow rate |
Calibration |
- 9GS-1: factory calibrated at 0%, 5%, 10% and 20%
- 9GS-4: factory calibrated at 0% and 4%
- Zero cal. suggested upon installation (via optional auto cal button or CAL-B-Key)
- Span cal recommended each 3 years (via CAL-B-Key, Gas not supplied by Sensata)
|
Output |
- 0–5Vdc standard
(1K ohm impedance)
- 4–20mA and 0–1Vdc
- User selectable scale
- Relay optional (see below)
|
Relay Trip Points |
- 9GS-1: default=10%,
user selectable from 3% to 25%
- 9GS-4: default=3%,
user selectable from 3% to 5%
(In 1% increments with CAl-B-Key) |
Relay Rating |
10–500 mA @ 24 Vac or 30 Vdc |
Input Power |
12 Vdc ±5%
|
I/O Interface |
Terminal block - 6 screws (2 input, 2 output, 2 relay) |
Temperature Ranges |
0°C to +50°C (operating)
-40°C to +70°C (storage) |
Humidity Range |
5–95%, non–condensing |
Case |
3.84" x 3.84" x 1.10" (ABS, UL94VO) |
High Volume Options |
- Weathertight case
- Integral O2 sensor
- Pigtail leads, connector
|
Mounting Type |
Hand–held (optional feature) or permanent |
Instrument Type |
Monitor |
Measurement Type |
Volume |
Application |
Confined space entry |
Notes |
Selectable relay points, used in atmosphere control equipment |
