Gasflag 1-Channel Warning Station

Order no.: C01818
£ 448.00
£ 542.08
C01818
price ex. (VAT / delivery)
Delivery time: 1-2 working days

Gas Warning Station Gasflag for gas sensors / IP 20 / relay output with max 1 A / EN 50270/EMC / Be aware, there is no gas sensor in delivery content included

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 Gasmaster 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.


Technical specifications for the  series Xgard sensors
Gas sensor type Xgard-Type 1 Xgard-Type 5 TCgard
 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 NH3
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

The response time of infrared gas sensors is  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 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 : +44 ( 0 ) 2380 98703 0

Advantages to the conventional gas sensors:

The great advantage of infrared gas sensors is their 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
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.
Sensor connection 1 sensor can be connected,  2 or 3 conductors
Input4 ... 20 mA
Outputrelay output with maximum 1 A,
i.e. useful for multidirectional illumination
Sensor connection2 or 3 conductors / 4 ... 20 mA
LEDs indicationoperating availability: green LED
difficulty: amber LED 
limit is exceeded: 2 red LEDs 
Display- - - 
Operating temperature range-20 ... +70 °C
Operating humidity range0 ... 99 % R.H. non-condensed
Power supply13 ... 28 VDC
ColourRAL7035
HousingABS plastic
Dimensions210 x 145 x 46 mm
Weight500 g
NormsEN 50270/EMC
ProtectionIP 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 .
ModelGM 1GM 4
Sensors inputs1 input for one of the gas sensors4 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
Memoryfor 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 range0 ... 95 % H.r. (non-condensed)
Power supply90 ... 264 VAC/50 ... 60 Hz
Battery1.2 Ah
Housingsteel exterior/ABS front panel
Dimensions288 x 278 x 10 mm
Weight4.5 kg
NormsEN 50270 (EMC), EN 61010-1 low voltage
ProtectionIP 54


Delivery content:
Sensors: All gas sensors are calibrated, with certification included and a user manual
Gasflag: user manual