|Title||VQ22 PELLISTOR VQ600 HEAD, METRI|
The VQ600 series from SGX is designed for fixed gas detection systems and implement either thermal conductivity or catalytic detection. The VQ600 can detect and monitor various gases in the range 0% to 100% LEL for combustible gases and 0% to 100% volume in thermal conductivity mode when using the SGX range of pellistor gas sensors. There are three types of mounting thread available to allow easy fixing to the junction box of the fixed system and the facility to attach accessories to the sensor via an external M46 thread.
|Company||Amphenol SGX Sensortech|
|Datasheet||Download VQ622T/1 datasheet
|Others parts numbering|
|VQ622T/3: VQ22 PELLISTOR, VQ600 HEAD, 0.75|
|VQ621T/3: VQ21 PELLISTOR, VQ600 HEAD, 0.75|
|VQ621T/1: VQ21 PELLISTOR VQ600 HEAD, METRI|
|VQ631M/1: VQ31 PELLISTOR VQ600 HEAD, METRI|
|SGX Europe Sp. z o.o. Building 11 Ligocka St. 103, 40-568 Katowice, Poland
The VQ600 Series is designed to detect and monitor various gases in the range to 100% LEL for combustible gases and to 100% volume in thermal conductivity mode when using the SGX range of pellistor gas sensors. The VQ600 Series is designed for use as an integral part of a fixed gas detection system. The head comprises a stainless steel flameproof enclosure constructed with an integral stainless steel sinter which allows the safe entry of the atmosphere being tested. There are three types of mounting thread available to allow easy fixing to the junction box of the fixed system and the facility to attach accessories to the sensor via an external M46 thread.FEATURES
Designed for fixed gas detection systems For detection of the following: o Combustible gases
The head must be mounted so that the cable is protected. This is normally achieved by mounting it into a port in a suitable junction box. Although SGX generally recommends that pellistors should be run with a constant voltage supply to the bridge, it is possible to use a constant current supply provided that the voltage across the bridge in clean air remains within the recommended limits. It is essential that the head be efficiently earthed (grounded). This may be achieved by mounting it either into an earthed metal junction box, or into a non-metallic junction box fitted with an earth continuity plate used in accordance with the box manufacturer's instructions. There are no internal connections to the sensing head body.
LEL and % Volume Monitoring Diffused gas sampling via sinter Three thread options available Operational in varying temperature, pressure humidity Fast response Rugged stainless steel construction No moving parts Resistance to corrosion Low maintenance Accessories available for field applications ATEX certified CSA certified (Canada and US)Dimensions Body material Weight See Outline on Page 4 Stainless Steel 435g
Ambient temperature range for operation (ATEX): for operation (CSA): storage: Operational pressure range Humidity range for operation and storage Gases Detected 100% RH (Non-condensing) Combustible, Light Gases
The pellistor used in the head should be operated in the manner recommended in the appropriate data sheet. In general it is recommended that the detector and compensator be run in a Wheatstone Bridge circuit so that a difference signal may be obtained. A suitable circuit is shown in Fig. 1. In use, the bridge supply voltage should not be allowed to vary by more than the specified V, or the output in clean air may change in sympathy.
DC supply to detectors Typical power See Configurations Table on Page 2 Refer to Pellistor Type Datasheet
Whilst SGX has taken care to ensure the accuracy of the information contained herein it accepts no responsibility for the consequences of any use thereof and also reserves the right to change the specification of goods without notice. SGX accepts no liability beyond the set out in its standard conditions of sale in respect of infringement of third party patents arising from the use of SGX products in accordance with information contained herein. In case of modification of the product, SGX disclaims all liability.SGX Europe Sp. Z o.o. Building 11 Ligocka St. 103, 40-568 Katowice, Poland
Thread Code Type 1 Catalytic Thermal Conductivity Thermal Conductivity Catalytic Thermal Conductivity Thermal Conductivity Catalytic YesGas Types 3 Yes All Flammable Gases All Flammable Gases Light Gases
Not Available (See Note 2) Not Available (See Note 2)
All Flammable Gases All Flammable Gases All Flammable Gases All Flammable Gases
Note 1: Refer to the datasheet for each Pellistor Type for more information. Note 2: If the desired Thread Type is listed as "Not Available" please contact SGX. Note 3: Thermal Conductivity sensors can be operated at voltages different to stated above depending upon target gas type.
The sensing head is supplied with one of three different mounting threads at the user's choice (see outline on Page 4). Thread code 2 3 Thread Metric 1.5 mm ANP (Taper) - 14 NPT ANP (Taper) - 14 NPT Dimension X (mm) 19.85 20.16Taper threads are manufactured in accordance with ANSI/ASME B1.20.1.
INSTRUCTIONS SPECIFIC TO HAZARDOUS AREA INSTALLATIONS (Ref : EU ATEX Directive 2014/34/EU)
1. The head is classified as flameproof equipment and is marked: Ex db IIC T5 Gb Tamb +60°C 2W/5V MAX The head should only be used within the limits imposed by this certification and by these conditions of use. 2. The head may be used in a hazardous area without further mechanical protection. However, the cable requires mechanical protection and must be terminated in a suitable enclosure. 3. The head must be efficiently earthed (grounded). This may be achieved by mounting it into an appropriate earthed metal junction box or into a non-metallic junction box fitted with an earth continuity plate used in accordance with the box manufacturer's instructions. There are no internal connections to the sensing head body. 4. In the event that the head becomes embedded in a junction box by over-tightening or corrosion, it may be released by the use of a spanner or wrench on the two flat surfaces on the sides of the body. 5. There are no user serviceable parts inside the body of the sensing head, and no attempt should be made to open the body for any purpose. The unit is non-repairable. 6. The head has not been assessed as a safety device (EHSR 1.5). 7. When installed in outdoor locations where rain or spray could interfere with the safe working of the head, or in indoor locations where water jets, sprays, or hoses are used routinely for cleaning purposes, the head should be fitted with the Weather Cap that is available as an accessory. 8. The end-user/installer should be aware that the certification of the head relies in its construction on the use of the following materials, which are suitable for most common applications: Enclosure........... Stainless Steel Sinter.................. Stainless Steel Bushing.............. Epoxy resin In accordance with the Note in EN60079-0:2006 Clause 6.1, the end-user/installer shall inform the manufacturer of any adverse conditions that the head may encounter. This is to ensure that the head is not subject to conditions that may cause degradation of these materials.
|Some Part number from the same manufacture Amphenol SGX Sensortech|
The VQ600 series from SGX is designed for fixed gas detection systems and implement either thermal conductivity or catalytic detection. The VQ600 can detect and monitor various gases in the range 0% to 100%