SGI-300 is a compact Peltier sample gas cooler with a PTFE heat exchanger, integrated peristaltic auto-drain, 0.1 micron coalescing filter and condensate sensor. It holds the outlet near 5 C and stops the sample pump if the sample is wet or warm.
Why SGI-300
One housing, four functions
Cooler, drain pump, condensate sensor and fine filter in one unit: fewer tubes and fittings, and a shorter bill of materials.
Protects the analyser
The sample pump runs only below 12 °C with no condensate; a fault relay trips if either condition is lost.
A long life on acidic gas
Solid-state Peltier cooling and a PTFE heat exchanger, with no compressor or refrigerant.
Specifications
| Item | Specification | Notes |
|---|---|---|
| Heat exchanger | 1 x PTFE, Peltier | |
| Sample inlet | Up to 160 C; dew point up to 65 C | |
| Sample flow | 240 LPH (4 LPM) maximum | |
| Outlet | 5 C | Cooler temperature controlled to this |
| Fine filter | 0.1 micron coalescing; dust below 3 micron | Long-life SS condensate sensor |
| Pump logic | External sample pump ON only when sample is below 12 C and dry | |
| Outputs | Relay 1 sample pump, relay 2 alarm | SPST, 230 V AC 1 A |
| Connections | Inlet and outlet 1/4 inch OD PTFE; flexible drain tube | |
| Wetted parts | SS316, PTFE, Viton, silicone, engineering plastic | |
| Enclosure | Wall mounted, 330 x 300 x 267 mm, about 11 kg; 230 V AC 50 Hz, 150 VA | Safe area, IP 20; ambient 10 to 40 C |
From the current Sarvesh product datasheets and company profile. Specifications may change without notice as products improve. The final responsibility to check that a product meets the process and analyser requirement remains with the customer.
Key features
- Microprocessor electronics with inbuilt moisture and condensate protection logic
- Integrated peristaltic pump, sample filter and condensate sensor
- Relay output to drive an external sample pump directly; alarm relay
- Auto start-up sequence and auto shutdown on hardware failure
- Four LED indicators: power, cooler temperature, pump and condensate
How it works
A sample gas cooler removes water from the sample before it reaches the analyser, so that condensate cannot damage it and soluble gases are not lost in uncontrolled condensation. Peltier coolers are solid-state, with no refrigerant and no compressor, which makes them compact and reliable.
SGI-300 adds the parts that normally surround a cooler: the drain pump, the filter, the condensate sensor, and logic that stops the sample pump if the sample is wet or warm. It trips the external pump on condensate detection and raises a fault when the cooler is above 12 C or condensate is detected. Peltier cooling is solid state and environment friendly, and the PTFE heat exchanger gives a long life on acidic sample gas.
Requirements and limits
- Safe-area unit.
- Suitable for samples with SO2, NOx and CO below 1000 ppm. Not suitable for samples containing HCl, HF, H2S or other highly corrosive, toxic or flammable gases.
Selection guidance
Choose SGI-300 when you are building your own sampling panel and want a self-contained cooler. Choose i-Cons when you want the whole sample system with diagnostics, blowback and heated hose control in one cabinet.
Applications
Application pages where this is part of the recommended solution:
Compatible products
i-Cons
Smart Peltier sample conditioner with diagnostics, auto blowback and Modbus, in a compact 19 inch cabinet.
View i-Cons
SP and SRP sample probes
Heated and non-heated probes with blowback, and retractable probes, in SS316, Inconel or ceramic.
View SP and SRP sample probes
ACCURRA-S
Online analyser for trace, percent and purity O2, CO, CO2, CH4 and dew point; can measure two gases from one sample.
View ACCURRA-S
ACCURRA-Zr
Zirconia percent O2 analyser for furnaces and boilers, single-point air calibration, options to 1400 C.
View ACCURRA-ZrFrequently asked questions
What is SGI-300?
A compact Peltier sample gas cooler with integrated auto-drain, filter and condensate sensor.
Does it protect the analyser from water?
Yes. A condensate sensor and pump logic stop the pump when the sample is wet or warm.
What is the outlet temperature?
The controller holds the sample outlet at 5 C.
What is the difference from i-Cons?
i-Cons includes the pump, blowback and heated-hose control and diagnostics in one cabinet.