TGS6810,TGS6812 and FCM6812
Applications
| Residential LNG and LPG alarms |
| Detectors for LNG and LPG |
| Hydrogen and combustible gas leak detectors for fuel cell applications |
Features
Figaro Engineering Inc. is pleased to announce its latest offering-the TGS68series of catalytic type gas sensors and their related products. In addition to the pre-calibrated module FCM6812, Figaro offers two gas sensor models-TGS6810 for methane/LP gas detection, and TGS6812 for methane/LP gas/H2 gas detection.
The most notable feature of these sensors is their “Fail Safe” design concept. With conventional catalytic type sensors, sensor output in gas tends to decrease over time due to deterioration of the catalyst. Such deterioration creates the risk that no alarm may be generated even if a gas leakage were to occur.
Figaro catalytic type sensors are designed so that sensor output in gas tends to increase in the long run. This is accomplished by changing the material and bead size between detector element and compensator element. In addition, by embedding the catalyst deep inside the sensing element, the sensor becomes more durable against silicone vapors and corrosive gases, such as SO2, than conventional type sensors. Furthermore, since the sensor possesses an adsorbent inside its sensor cap, its cross sensitivity to alcohol is much smaller than that of traditional catalytic type sensors.
These sensors are ideal for stationary gas detectors or monitoring systems for combustible gases. However, due to the instability of output voltage in air (Vout in air), these sensors are not suitable for gas analyzers or measurement applications where very high accuracy is required.
As a related product, Figaro has FCM6812, a pre-calibrated module that uses hydrogen sensor TGS6812.
It includes the following features:
* Linear analog output proportional to gas concentration
* Maintenance free usage
* Self diagnosis
* Compact size and low cost
This module has been used for hydrogen leak detection in stationary type fuel cells throughout Asia, North America US and European countries.
For more info, please contact us.
- * Fail safe design
- * Linear output
- * Sensitivity combustible gases
- * Small sensitivity to alcohol
- * High durability to silicone vapor, SO2
- * Compact and Low cost
- * Long life
- * Meets RoHS requirements
Frequently Asked Questions
- Does the sensor have temperature and humidity dependency?
- No. It is unaffected by temperature and humidity.
- What kind of gases could damage the sensor?
- Typical poisoning gases are silicone vapors which may be present in adhesives or hair grooming materials. If silicone vapors adsorb onto catalyst surface, the detector element will be coated, irreversibly inhibiting sensitivity. For more information, please refer to the Operating principle page.
- Does the sensor have an explosion proof structure?
- The sensor has explosion proof structure which meets IEC60079-15:2001 requirements.
Specifications
| Model number | TGS 6810 | TGS 6812 | ||
|---|---|---|---|---|
| Sensing element type | Catalytic | |||
| Target Gases | Methane, propane, iso-butane | Hydrogen, methane, iso-butane | ||
| Typical detection range | 0~100%LEL of each gas | |||
| Standard circuit conditions | Operating voltage | 3.0±0.1V AC/DC | ||
| Electrical characteristics under standard test conditions | Heater current | 175mA (typical) | ||
| Heater power consumption | 525mW (typical) | |||
| Zero offset | -15 ~ +55mV | |||
| Output sensitivity (ΔVout) |
Hydrogen | - | 12~22mV in 4000ppm | |
| Methane | 13~23mV in 5000ppm | |||
| Iso-butane | 6~14mV in 1800ppm | |||
| Response time (T90) | ≤15 sec. | |||
| Standard test conditions | Test gas conditions | Methane/iso-butane in air at 20±2˚C, 65±5%RH | Hydrogen/methane/iso-butane in air at 20±2˚C, 65±5%RH | |
| Circuit conditions | 3.0±0.05V AC/DC | |||
| Conditioning period before test | ≤30 sec. | |||
| Operating conditions | -10˚C~+50˚C, ≤95%RH (w/o dew condensation) |
-10˚C~+70˚C, ≤95%RH (w/o dew condensation) |
||
| Storage conditions | -10˚C~+60˚C, ≤95%RH (w/o dew condensation) |
-10˚C~+80˚C, ≤95%RH (w/o dew condensation) |
||
| Product name | Combustible gas sensor module | |
|---|---|---|
| Model No. | FCM6812-P00 | |
| Gas sensor | TGS6812(catalytic type) | |
| Detection range |
0 to 14,000ppm of H2 (also can detect methane, iso-butane, and propane) |
|
| Output signal | 0~4.5V DC(up to maxVIN) | |
| Normal operation | Vout=[H2 conc(ppm)/4000]+1.0 | |
| Vout in air | 1.0 ±0.2V(*) | |
| Vout in 8000ppm H2 | 3.0 ±0.2V(*) | |
| Trouble | Vout=0~0.1V (recommended threshold for trouble detection=0.2V) |
|
| Response time (T90) to 4000ppm H2 |
≤30 seconds | |
| Warm up time (Vconc<2.0V) |
≤30 seconds | |
| Operating conditions | -10˚~+60˚C,5~95%RH (avoid condensation) | |
| Storage conditions | -10˚~+60˚C,5~95%RH | |
| Input voltage | 5.0±0.2V DC | |
| Power consumption | approx 1.0W | |
| Weight | approx. 15g | |
| Dimensions | 50x30x24.4mm | |
| Position dependency | Mount so that the two lug holes are in a horizontal position | |
| Standard test conditions | Ambient conditions | 20±2˚C,65±5%RH |
| Circuit conditions | 5.0±0.2V DC | |
| Conditioning period prior to test | ≥10min. | |
* represents sensor output under standard test conditions
