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Gas Sensors series Xgard, TXgard, Flamgard
sensors for measuring gases (with display and output or gas sensors in combination with a stationary equipment to detect gases (with ATEX approval)

Here you can find ATEX-approved gas sensors for flammable gases (ex), oxygen and toxic gases for fixed mounting. These gas sensors vary by the type of gases they measure, functionality (e.g. analogue output, relay output) or the type of indicator - there are sensors with a built-in screen (as an indicator) or without. You can choose a gas sensor for almost any type of gas: methane, propane, butane, pentane, LPG, ethanol, ethylene, nitrogen, acetylene, benzene (lead), phosphine, oxygen, ozone, carbon monoxide, carbon dioxide, hydrogen sulfide, sulfur dioxide, chlorine, ammonia (sensors for other types of gases can be requested). Sensors without a display (series Xgard) are used in combination with an external indicator or a facility to detect gases, e.g. with the Gasmaster. Gas sensors that operate without internal alarm relay can be used in conjunction with the GasFlag distributor.

Gas sensors
The series of sensors Xgard, TXgard and Flamgard is always delivered calibrated and registered. By default, the sensor is delivered calibrated to methane. Please consult us for other types of calibration.

GasFlag
We offer the GasFlag for sensors without alarm relay. It is a small box for fixed installation without a display for signals for the input of 4… 20 mA. Its output has two alarm relays (max. 1 to 30 VDC). The status is displayed through the LED, and it is powered to 230 V.

Gasmaster
The Gasmaster is a power station of gas detection with a large display. There are several versions: 1 and 4 channels as well as with or without an interface for the PC. The Gasmater also possesses an alarm relay with which light signals or ventilators can be activated. The systems of the Gasmaster and the gas sensors are delivered configured, calibrated and verified.

Here you can find an overview of gas meters for the protection of humans.

View or print the user manual of the Gas Sensors series Xgard, TXgard, Flamgard   CE certificate Gas Sensors series Xgard, TXgard, Flamgard   View the Gas Sensors series Xgard, TXgard, Flamgard  Software for the Gas Sensors series Xgard, TXgard, Flamgard  View technical data of the Gas Sensors series Xgard, TXgard, Flamgard  Information about the Gas Sensors series Xgard, TXgard, Flamgard

Technical specifications for the  series Xgard sensors

Gas sensor type Xgard-Type 1 Xgard-Type 5 TCgard
Image Gas Sensors type Xgard1 Gas Sensors type Xgard5 Gas Sensors type Xgard6
 EX Zone 0, 1, 2 1, 2 1, 2
 

Types of gases to detect with the corresponding range of measurement (you will find  the required  order code for the types of gases in online store).

0 ... 25 vol% O2
0 ... 2000 ppm H2
0 … 4 vol% H2

= (100% UEG)
0 ... 250 ppm CO
0 … 25 ppm H2S
0 … 5 ppm CI
0 ... 1 ppm O3
0 ... 10 ppm SO2
0 …1 ppm PH3
0 ... 50 ppm NH
3
0 ...100 % UEG 
inflammable gases (methane, procloth, butane, pentane, LPG, ethanol, ethylene,…)

By default, the sensor is delivered calibrated to methane. Please consult us for other types of calibration.

0 ... 100 vol% methane
0 ... 100 vol% CO2
0 ... 100 vol % He
Accuracy ± 3 % ± 3 % ± 3 %
Display - - - - - - - - -
Signal output

2 conductors
4 ... 20 mA

3 conductors
4 ... 20 mA

3 conductors
4 ... 20 mA
Alarm/control relays - - -  - - - - - -
Norms ATEX  ATEX ATEX
Power supply

8 ... 30 V DC/24 mA

8 ... 30 V DC/24 mA 8 ... 30 V DC/24 mA
Temperature range -20 ... +50 °C -40 ... +55 °C +10 ... +55 °C
Weight approx. 1 kg approx. 1 kg approx. 1 kg
Technical specifications of the gas sensors series Xgard IR (with infrared measuring)
Gas sensor type Xgard IR (infrared) Optional components for the Xgard IR
Image Gas Sensors type Xgard IR (infrared)

The response time of infrared gas sensors is  Protector against solar light for Gas Sensors.T90 <30 s and zero drift is approx. ± 2% per month. For highly accurate measurements and  protecting the sensors exterior, there are some optional protectors. Depending on the installation site, the protector against sunlight may be the perfect option. If the sensors are mounted outside (in the open field) or in halls and pavilions that are frequently  Weather variation protecting cap for infrared Gas Sensors.cleaned with water or disinfected from time to time, we recommend the water deflector protector. When the sensor is mounted in high humidity environments or offshore applications and vessel installations, we recommend the gas sensor with the cap resistant to rain. The cone collector is often used when you need to detect light gases (e.g. methane). This facilitates the entry of the gas into the sensor. If you have any questions, contact us : UK customers +44(0) 23 809 870 30 / US customers +1-410-387-7703
 

Advantages to the conventional gas sensors:

The great advantage of infrared gas sensors is theirDeflector water protector for infrared Gas Sensors. long life (>5 years) and almost inexistent long-term drift. This grealty lowers the cost of calibration. In addition, the sensors have a full temperature compensation. The ATEX, IECEx and UL norms allow them to be used worldwide.

EX Zone 1, 2, 21/22
Types of gases to detect with the corresponding range of measurement (you will find  the required  order code for the types of gases in the online store). 0 ... 2% CO2
0 ... 5% CO2
(according to sensor)
0 ... 100% UEG
inflammable gases (Methane, propane, butane, pentane, LPG, ethanol, ethylene)
Accuracy ±2% (the whole range)
Display ----
Output signal 3 conductors
4 ... 20 mA
Alarm/control relays ----
Norms ATEX actual
Protection IP65/IP66 with cap resistant to inclement weather.
Power supply 10 ... 30 V DC/50 mA
Temperature range -20 ... +50 ºC
Dimensions 156 x 166 x 111 mm
Weight 1 kg (aluminium housing)
You will find other gas sensord for CO2 at this link.
Technical specifications of the gas sensors series TXgard
Gas sensor type TXgard IS+ TXgard Plus Flamgard Plus
Image Gas Sensors type TXgard-IS. Gas Sensors type TXgard-Plus. Gas Sensors type Flamgard-Plus.
EX Zone 0, 1, 2 1, 2 1, 2
Types of gases to detect with the corresponding range of measurement (you will find  the required  order code for the types of gases in the online store). 0 …25 vol% O2
    0 … 500 ppm CO
   0 ... 50 ppm H2S
0 … 1 ppm O3
     0 … 100 ppm NH3
  0 ... 10 ppm Cl2
   0 ... 2000 ppm H2
  0 ... 25 ppm HCN
0 ... 2 ppm PH3
0 ... 25 vol% O2
0 ... 50 ppm H2S
0 … 500 ppm CO
0 ... 10 ppm ETO
0 ...100 % UEG 
inflammable gases (Acetylene (C2H2), ammonia (NH3), butane (C4H10), ethanol (C2H5OH), ethane (C2H6), ethylene (C2H4), hexane (C6H14). hydrogen (H2)
LPG, methane (CH4), methanol (CH3OH). pentane (C5H12), steam oil, propane (C3H8). propanol (C3H8O)
Accuracy ± 3 % ± 3 % ± 3 %
Display yes yes yes
Output signal 2 conductors
4 ... 20 mA
3 conductors
4 ... 20 mA
3 conductors
4 ... 20 mA
Alarm/control relays - - - yes yes
Norms ATEX ATEX  ATEX 
Power supply

11 ... 30 V DC/20 mA

10 ... 30 V DC/210 mA

10 ... 30 V DC/210 mA
Temperature range -20 ... +50 °C -10 ... +55 °C -10 ... +55 °C
Weight 0.7 kg 2.2 kg 2.2 kg
Technical specifications for the Gasflag

Warning station without display to connect one of the above sensors. This unit is usually mounted on the wall. When it exceeds the threshold value, it emits an alert tone and flashes a red alarm LED. A relay output can, for example, be connected to an omnidirectional illumination. The response time of the alarm is less than 1 sec. Threshold values can be adjusted. The alarm station is almost always used with a gas sensor. When it is not desired then the sensor itself makes the indication, and the alarm sounds.


Installation to analyse Gas Sensors type type Gasflag.
Sensor connection  1 sensor can be connected,  2 or 3 conductors
Input 4 ... 20 mA
Output relay output with maximum 1 A,
i.e. useful for multidirectional illumination
Sensor connection 2 or 3 conductors / 4 ... 20 mA
LEDs indication operating availability: green LED
difficulty: amber LED
limit is exceeded: 2 red LEDs
Display - - - 
Operating temperature range -20 ... +70 °C
Operating humidity range 0 ... 99 % R.H. non-condensed
Power supply 13 ... 28 VDC
Colour RAL7035
Housing ABS plastic
Dimensions 210 x 145 x 46 mm
Weight 500 g
Norms

EN 50270/EMC

Protection IP 20
Technical specifications for the Gasmaster  (1 - 4 gas sensors)

Digital display and control panel for gas sensors described above. There are two Gasmaster models: GM 1 for a GM sensor, and 4 for up to 4 sensors (shows 4 values at one time). In addition to the standard analogue output, both types are available with an RS 232 data interface. The device also has relay outputs to activate a multidirectional light. The housing of the apparatus is protected against dust and splashing water.

The unit is standardly equipped with a battery so it will continue operating in case of a power failure.



Installation to analyse Gas Sensors type Gasmaster .
Model GM 1 GM 4
Sensors inputs 1 input for one of the gas sensors 4 inputs for 4 gas sensors
Outputs - 1 relay output
(250 VAC/8 A)
- 1 analogue output
(4 ... 20 mA)
- 1 RS 485 digital 
- 1 RS 232 digital -optional
- 4 relay outputs
(250 VAC/8 A)
- 4 analogue outputs
(4 ... 20 mA)
- 1 RS 485 digital 
- 1 RS 232 digital-optional
Memory for 300 events (alarms, system errors, settings adjustments)
Indicators

- digital display for gas in ppb, ppm or %

 - backlight

- alarm LED,  availability of uses and errors

- digital display for 4 gases in ppb, ppm or %

 - backlight

- alarm LED, 

availability of uses and errors

 
Alarm indicators

Sound: 85 dB sharp beep

Visual: alarm LED

Operating temperature range - 10 ... + 50 °C
Operating humidity range 0 ... 95 % H.r. (non-condensed)
Power supply 90 ... 264 VAC/50 ... 60 Hz
Battery 1.2 Ah
Housing steel exterior/ABS front panel
Dimensions 288 x 278 x 10 mm
Weight 4.5 kg
Norms EN 50270 (EMC), EN 61010-1 low voltage
Protection IP 54

Delivery content:
Sensors: All gas sensors are calibrated, with certification included and a user manual
Gasflag: user manual
Gasmaster (GM 1 o GM 4): user manual

Optional components

- Recalibration of the sensors according to DIN EN ISO with certificate

- RS-232 for Gasmaster (GM 1 or GM 4)

- Software including data cable RS-232 (if using the optional RS-232 interface)

- Adapter RS-232 to USB for optional interface RS-232 for Gasmaster (GM 1 or GM 4)

- Zener barrier for sensors Xgard Class 1 and TXgard IS + (it is strictly necessary for Zone 0: 1 per           detector)

Gas Sensors series Xgard, TXgard, Flamgard: Technical information Return to homepage
Here you will find an overview of all the measuring instruments available at PCE Instruments.

Contact:
PCE Instruments UK Limited
Units 12/13 Southpoint Business Park
Ensign Way, Southampton
United Kingdom, SO31 4RF
Phone: +44(0) 23 809 870 30
Fax: +44(0) 23 809 870 39

Contact:
PCE Americas Inc.
711 Commerce Way suite 8
Jupiter 33458 FL
USA
Phone: +1-410-387-7703
Fax: +1-410-387-7714

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