Summary of Contents for red line AR420-C
- Page 1 Operating Instructions Gas Measuring System AR 420-C Read before use! Observe all safety instructions! Keep for future reference...
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Page 2: Table Of Contents
Table of contents 1. For your safety ..................3 Safety information and tips .............. 4 Intended use ................5 Other dangers................. 7 Qualification of personnel ..............8 2. Product description ................8 Design of the gas measuring system ............ 8 Principle of operation ............... 9 Technical data ................ -
Page 3: For Your Safety
1. For your safety Observe the instructions for use Any person handling or operating the gas measuring system must first be fully familiar with and observe these instructions for use. The gas measuring system must only be used as described in section 1.2. Servicing The gas measuring system must be inspected and serviced regularly by qualified specialists. -
Page 4: Safety Information And Tips
Safety information and tips A series of warnings is used in these instructions concerning some of the risks and dangers that may occur when using the gas measuring system. These warnings contain "signal words" designed to draw attention to the degree of danger that is to be expected. -
Page 5: Intended Use
Measuring the concentration of a single toxic gas or vapour in air. Measuring the oxygen concentration in air. There is one specific electrochemical sensor built into the AR420-C gas measuring system which specifically measures one single substance. One device can never measure more than one substance! Please refer to the appendix to these operating instructions for an exact specification of the built-in sensor. - Page 6 WARNING! Danger of fire and explosion due to sparks! The AR420-C gas measuring system must not be operated in areas subject to explosion hazards. The air mixture that is to be measured must not contain any substances that might contaminate the electrochemical sensor. In this case the sensor would output measured values that are too low! Please refer to the appendix if necessary for poisons for the sensor that is built into your device.
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Page 7: Other Dangers
IMPORTANT! It is essential to observe the information given in these operating instructions with regard to operation, maintenance and servicing. Faults must be rectified immediately. 1.3 Other dangers Despite its careful design, there remain some further dangers associated with handling the gas measuring system. The following are known to us: DANGER! Mains voltage (230 V, 50 Hz). -
Page 8: Qualification Of Personnel
1.4 Qualification of personnel Only qualified mechatronic engineers or persons with comparable training may mount, install or commission the gas measuring system or carry out maintenance and servicing work. Only qualified electricians may carry out work on the electrical system. (In Germany: according to German VDE!) The operator must instruct all users of the system on the basis of these operating instructions. -
Page 9: Principle Of Operation
(see appendix). The measured signals are processed and output (linear current output, 4-20 mA) as an integral feature of the measuring system. The AR420-C has a 24 V DC power supply. -
Page 10: Technical Data
2.3 Technical data Transmitter to all Sensors power supply terminal voltage min. 14 V DC ± 5% screw terminals 2 pole current approx. 30 mA connections 2 reverse-polarity screw terminals 24 V DC± 5% and 4-20 mA connecting cable 2x1,5² Cu + functional ground shielded cable 100 ... - Page 11 Sensor for Chlorine Cl2, 0-10 ppm gas inlet per diffusion measuring range 0-10 ppm Cl2 measuring-principle two-elektrode electro-chemical temperature range -20° C to +50° C pay attention to sunlight permissible humidity 15-90% relative humidity non condensing air pressure 900 bis 1100hPa longterm drift <2% signal loss/month accuracy...
- Page 12 Sensor for Carbon Monoxide CO, 0-300 / 500 ppm gas inlet per diffusion measuring range 0-300 / 500 ppm CO measuring-principle two electrode electro-chemical temperature range -10° C to +50° C pay attention to sunlight permissible humidity 15-90% relative humidity non condensing air pressure 900 bis 1100hPa...
- Page 13 Sensor for Oxygen O2, 0-25 Vol % gas inlet per diffusion measuring range 0-100 Vol% O2 measuring-principle two electrode electro-chemical temperature range 5° C to +40° C pay attention to sunlight permissible humidity 10-90% relative humidity non condensing air pressure 811 to 1216 hPa longterm drift accuracy...
- Page 14 Sensor for Hydrogen Sulfide H2S, 0-200 ppm gas inlet per diffusion measuring range 0-200 ppm H2S measuring-principle two electrode electro-chemical temperature range -40° C to +50° C pay attention to sunlight permissible humidity 15-90% relative humidity non condensing air pressure 1013hPa longterm drift <2% signal loss/month...
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Page 15: Certification
Certification The gas measuring system complies with EMC Directives EN 61000-6-2 and EN 61000-6-3 and thus Directives 89/336/EEC and 92/31/EEC. Transport and installation 3.1 Transport The gas measuring system is supplied together with these operating instructions. Please check the packaging for any damage when the product is delivered and report any damage immediately to the forwarding agency and dealer. -
Page 16: Installation
3.3 Installation IMPORTANT! Mount the gas measuring system on a level, firm and dry wall. When installing, it is essential to remain within the following permissible ambient conditions: Ambient temperature as a rule between -10 and +50° C (see appendix). Please bear in mind that under certain circumstances the sun can heat up the housing considerably! The housing must be freely accessible and visible at all times. -
Page 17: Electrical Connection
(safe electrical isolation). Electrical work should only be carried out by a qualified electrician. Only install in a voltage-free state. Fig. 2: AR420-C connection diagram. Left: Version with two-electrode sensor. Right: version with three-electrode sensor; PE, potential earth; PS, potentiometer span for setting the span;... -
Page 18: Operation
The gas measuring system must be connected to any downstream equipment by means of a three-core, shielded cable (see Fig. 2) with maximum 100 cable resistance, including go and return line. Do not lay this line next to a high-tension power cable as there is a danger of radiated interference. -
Page 19: Calibration
Next, carry out a test of the measured values. To do this, offer up some test gas (concentration half measuring range, e.g. 150 ppm CO) to the diffusion opening and read the measured value on the downstream device. If the measured value corresponds to the concentration of the test gas ±... -
Page 20: Maintenance And Servicing
Maintenance and servicing IMPORTANT! The gas measuring system is a safety device and must only be repaired by the manufacturer. Do not modify the gas measuring system and do not reconstruct it. It might otherwise no longer measure the gas concentration reliably. DANGER! Mains voltage (230 V, 50 Hz). -
Page 21: Decommissioning
6. Decommissioning Switch off the supply voltage. Please refer to section 3.2 for information on storage. 7. Assortment / Overview 7.1 Product variants Measuring system AR420 Measuring range for substance Ammonia (NH 0 to 100 ppm Chlorine (Cl 0 to 10 ppm 0 to 20 ppm Carbon Monoxide (CO) 0 to 300 ppm... - Page 22 7.2 Spareparts Spare sensor for Measuring range substance Ammonia (NH 0 to 100 ppm Chlorine (Cl 0 to 10 ppm 0 to 20 ppm Carbon Monoxide (CO) 0 to 300 ppm 0 to 500 ppm 0 t0 1000 ppm Oxygen (O 0 to 25 Vol% Sulfur Dioxide (SO 0 to 100 ppm...
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Page 23: Packaging And Transport
Packaging and transport This device is a measuring instrument with sensitive electronic components. When returning it, please use the appropriate class of packaging according to the applicable regulations. Disposal Obsolete devices should be rendered unusable immediately and disposed of according to the relevant regulations. Please contact your local authority for information about disposal. - Page 24 In the event of any claim under the warranty, please return the device to us. The buyer shall bear the costs of transportation and the risk while the device is in transit. The execution of work under the warranty does not affect the warranty period in any way.
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Page 25: Dimensions
10.3 Dimensions...
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