Crowcon 20/20M Скачать руководство пользователя страница 3

1. General

The F-Gas detector provides
enclosure.

The sturdy, IP54-protected casing
indication and the interface electronics

Based on the physical measuring principle of infrared absorption, apart from selectiveness,
this transmitter offers the best prerequisites for reliable and lasting
difficult environment.

The F-Gas detector is able to detect even the smallest quantities of toxic gases reliably and
to report its findings to a connected
transmitted as a linear analogue current or voltage

The following signals are available

(0)4 – 20mA

Linear; the desired operating mode can be set

0 - 2V

0 - 5V

0 - 10V

Linear; the desired operating mode can be set

Linear; the desired operating mode can be set via a link

10V setting requires at least

Important:

the F-Gas detector is not certified for use in a hazardous area. Any form of

maintenance, parameterization and all changes to the settings of the device must only be
carried out by trained and authorized staff.

F-Gas Detector

provides the benefits of the IR gas sensor technology

protected casing houses the IR sensor, a user interface with LED status

and the interface electronics

(fig.1)

.

Based on the physical measuring principle of infrared absorption, apart from selectiveness,
this transmitter offers the best prerequisites for reliable and lasting detection

is able to detect even the smallest quantities of toxic gases reliably and

to report its findings to a connected control system.

The gas concentration can be

linear analogue current or voltage output.

The following signals are available as analogue values:

Linear; the desired operating mode can be set

Linear; the desired operating mode can be set

Linear; the desired operating mode can be set via a link

10V setting requires at least 15V DC as supply voltage

Gas detector is not certified for use in a hazardous area. Any form of

maintenance, parameterization and all changes to the settings of the device must only be

authorized staff.

Front Casing

Rear Casing

Interface PCB

Figure 1: F-Gas Detector Layout

Gas Detector Instructions

IR gas sensor technology within a robust

user interface with LED status

Based on the physical measuring principle of infrared absorption, apart from selectiveness,

detection, even in a

is able to detect even the smallest quantities of toxic gases reliably and

concentration can be

Linear; the desired operating mode can be set via a link

Linear; the desired operating mode can be set via a link

Linear; the desired operating mode can be set via a link

15V DC as supply voltage

Gas detector is not certified for use in a hazardous area. Any form of

maintenance, parameterization and all changes to the settings of the device must only be

Interface PCB

Содержание 20/20M

Страница 1: ...M070029 Issue 1 January 2014 Crowcon F Gas Detector Infra Red SF6 and Refrigerant Gas Detector Installation Operating and Maintenance Instructions...

Страница 2: ...ng maintenance mode without accepting any changes 12 4 7 Exiting maintenance mode taking over changes 13 4 8 Restoring factory settings 13 4 9 ZERO calibration 13 4 10 SPAN calibration 14 4 11 Informa...

Страница 3: ...ers the best prerequisites for reliable and lasting detection is able to detect even the smallest quantities of toxic gases reliably and to report its findings to a connected control system The gas co...

Страница 4: ...oltage of 12 to 2 faultless operation is guaranteed within these parameters Supply voltage fluctuations kept as small as possible All connections used for supply and output signals are available from...

Страница 5: ...rface PCB Both components form a fixed unit and must not be separated The installation of the transmitter is described as follows Gas detector should be mounted where the gas to be detected is most li...

Страница 6: ...ocessing equipment as well as safety and engineering issues The agreement reached on the locations of sensors should be recorded Gently prize open the flaps using a screw driver being careful to not d...

Страница 7: ...essure compensation it would lead to inaccuracies in the measurement of the concentration and possibly to faulty data As the ambient pressure must be taken into account when measuring the concentratio...

Страница 8: ...n the region of 0 20mA linear to the measuring value Current signal in the region of 4 20mA linear to the measuring value This option also facilitates the easy detection of a broken wire or the failur...

Страница 9: ...conditions This complies with the NAMUR NE43 standards range run detection range Detection range run detection range range Use of the voltage output In some applications it is necessary to read the ou...

Страница 10: ...the transmitter unintentional disconnection or wire break this status will be displayed at the power output as follows Operation with 4 20mA Output current will be frozen at 2mA Operation with 0 20mA...

Страница 11: ...transmitter will begin the start up phase STATUS LED will flash green This will take less than 2 minutes and this time is used to check all internal components During the start up phase the analogue...

Страница 12: ...ion to verify correct sensor response Calibration gas should be applied using the Calibration Adaptor accessory part number C03658 at a flow rate of 0 5 litres per minute If internal settings are to b...

Страница 13: ...Press DOWN 6 times in a row for 6 seconds without any errors If the restoration has been completed successfully the STATUS LED will flash green for 3 seconds then changing to lighting up yellow one i...

Страница 14: ...is still in level 1 of maintenance mode The changed calibration values were not taken over This process has to be repeated Caution The changes only become effective when the maintenance mode has been...

Страница 15: ...l change from flashing yellow to flashing green for 3 seconds subsequently changing to lighting up yellow one is still in level 1 of maintenance mode and is still able to carry out system changes In t...

Страница 16: ...nge Sensor okay PIN code cor r ect Exit 1 Discard changes STAT SPAN ZERO 3s lat er PIN err t imeout Exit 1 Apply all changes STAT SPAN ZERO 3s lat er no key for 30min UP for 3s DOWN for 3s Service Bas...

Страница 17: ...d 102mm Weight 0 25Kg Ingress Protection IP54 Power 12 28Vdc Analogue Output 4 20mA current source can also be set to 0 20mA 0 2V 0 5V 0 10V Repeatability 1 of full scale Linearity 2 of full scale Ope...

Страница 18: ...40 STEL T2 710105 03003 Blended Fluids Used in Refrigeration Air Conditioning Market Refrigerant Composition Components Exposure Limit OSHA PEL Detector Part Number R404a R143a 125 134a 1000ppm T2 740...

Страница 19: ...CRN It is essential that the address label is securely attached to the outer packaging of the returned goods Units returned to Crowcon as faulty and are subsequently found to be fault free or requirin...

Страница 20: ...crowcon com USA Office Crowcon Detection Instruments Ltd 1455 Jamike Ave Erlanger KY 41018 USA Tel 1 859 957 1039 or 1 800 527 6926 Fax 1 859 957 1044 Email salesusa crowcon com Website http www crow...

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