ManDistr SDM1 Standard Eng 1 5

DUST METER SDM1

(standard model)

USER’S MANUAL

MAN 0001 REV 1.5 DATA 28/06/2011 - ManDistr_SDM1_Standard_Eng_1_5

AUTEL s.r.l. - Via D. Bagnoli, 9 - 41049 SASSUOLO (MO) -ITALY- Tel. 0039-0536-802104 - Fax 0039-0536-803372 Pag. 2 / 12

SDM1

CONTENTS CONTENTS.................................................................................................................................................2

GENERAL DESCRIPTION ...................................................................................................................... 3

LEGEND...................................................................................................................................................... 3

GENERAL FEATURES............................................................................................................................. 4

CURRENT OUTPUT SPECIFICATIONS ( OPTIONAL) .......... .......................................................... 4

CONNECTION DESCRIPTION .............................................................................................................. 5

GENERAL FUNCTIONING ..................................................................................................................... 8

SDM-1 CALIBRATION............................................................................................................................. 9

4-20mA OUTPUT FUNCTIONING........................................................................................................ 10

SDM-1 CONNECTION WITH TRIBO-ELECTRIC PROBE RP-04 ... .............................................. 10

PROBE RP 04 ELECTRICAL CONNECTION.................................................................................... 11


SDM1

GENERAL DESCRIPTION The dust meter SDM1 is an instrument for dust measuring and diplaying with led. The instrument has been conceived to be interfaced with a remote probe with tribo-electric effect, mod. RP-04. The two cards are interfaced through a cable 5 poles, which includes a serial digital line for data exchange, and an output +12Vdc and -12Vdc for the above-mentioned probe supply. There are two relay outputs (clean exchange contact) for viewing of dust alarms. The activation or not of each of the two relays is displayed by the status of the two LED on the front panel of the instrument.

LEGEND

1- Power Supply fuse; 6- LED BAR for dust signal. ; 2- Terminal board relays output; 7- Signal LED supply OK; 3- Terminal board 4-20mA output (Optional); 8- Potentiometer probe sensibility; 4- Terminal board RP04 connection; 9- Potentiometer alarm thereshold; 5- Terminal board net supply 10- Box fixing clamp.

80

5 55 25

172

70

6,8

12519

5

148

1 3 4 5 2 6 13 14 17 18 16 15 1 3 4 7 5 8 2 6 9

10

1

2

7

6

8 9

3 4 5

19


SDM1

GENERAL FEATURES Box: Transparent poli-carbonate; Protection degree IP56 Supply: 24Vac+/- 15% 50-60 Hz o 115Vac +/- 15% 50-60 Hz o 230Vac +/- 15 % 50-60 Hz. Working temperature: From -10 to +60 ° C Connections: Screw type terminal boards. Box dimensions: 195 x 148 x 80 mm. Weight: 1250g. Relay outputs: Max current: 10A 250 VAC o 10A 30 VDC – resistance load Max Power absorbed: 10VA-10W.

CURRENT OUTPUT SPECIFICATIONS ( OPTIONAL) Signal output range: From 4.0 to +20.0 mA. Precision: +/- 0.1 mA. Max applicable load: 500 Ohm ( active output ) N.B. It is necessary to ask during the order’s phase.


SDM1

CONNECTION DESCRIPTION

The instrument SDM1 can be supplied through 3 available supplies, 230 Vac 50-60Hz, 115 Vac 50-60Hz, 24 Vac 50-60Hz. The numbering of supply clamps of the electronic card is described as follows:

- clamp 15: 230Vac

- clamp 16: 115Vac

- clamp 17: 24Vac

- clamp 18: 0V

- clamp 19: earth

A connector, code 01000S0400145 is used for the connection between SDM-1 device and RP04 probe.

General supply

The connections in different configurations are shown in the table and pictures above.

Supply: 230 Vac 50-60Hz (standard model)

Supply: 115 Vac 50-60Hz (on demand)

Supply: 24 Vac 50-60Hz (on demand)

Electronic card supply

Tension supply

15 230Vac 18 0V 19 earth


Tension supply

16 115Vac 18 0V 19 earth


Tension supply

17 24Vac 18 0V 19 earth

ATTENTION! Before connecting or modifying the wiring be sure to have cut off the tension of the SDM-1 !

15 17 18 19 16

0 24

24 Vac

15 17 18 19 16

0 230

230 Vac

15 17 18 19 16

0 115

115 Vac


SDM1

Let’s see in detail an example of connection 230V( without 4-20mA output).

1 3 4 5 2 6 13 14 11 17 18 16 15

16 18 19 20 17

+12 0 -12 A B

12

43

12

3 4

230Vac

RP04

SDM1

CONN. CODE01000S0400145

19 7 9 8


SDM1

Remote tribo-electric probe supply RP-04

The probe with tribo-electric effect RP-04 receives the supply and the interface of I/O from the instrument through a connector, code 01000S0400146. The wiring scheme of the connector on the terminal board of SDM-1 electronic card is represented below.

Terminal SDM1

SDM-1 must be connected to the probe through 5 poles shielded cable, section 0.5 mm2, through a connector, code 01000S0400145. The socket of the cable (shield) must be connected to the terminal GND; just one of the card, in particular it is preferable the one beside the remote probe RP-04.

ATTENTION !!! The probe is particularly sensitive to electrostatic charges. FAKE THE PROBE IN PROTECTED AREAS ONLY AND AFTER BEING DISCHARGED ELECTROSTATICALLY BY TOUCHING A SURFACE WITH GROUND POTENTIAL.

ATTENTION !!! Be aware of the connections of this scheme. The probe can be seriously damaged if the connection is wrong.

10 12 13 14 11

COD. 01000S0400146

1

4 3

2


SDM1

External connections to SDM-1

Relay contacts

1 - Common DUST level relay; 2 - Contact N.C. DUST level relay; 3 - Contact N.O. DUST level relay; 4 - Common HIGH DUST level relay; 5 - Contact N.C. HIGH DUST level relay; 6 - Contact N.O. HIGH DUST level relay;

4-20 mA output (optional)

7 - Positive clamp for current output; 8 - Negative clamp for current output; 9 - Clamp of earth circuit;

GENERAL FUNCTIONING

At the lighting, the ON led of the SDM-1 device will start to light, with the transmission to the remote probe RP-04 of the value set with the relative sensitive parameter. During this phase, the dust value after a first reading will remain the same. This transmission operation will be performed each time that there will be a change in the earning potentiometer. The dust value will be displayed on the led column in base of the percentage valued referred to the value in mg/m3 used for the calculation of alarm threshold. The led lighting will appear in the following way: - Led Clean value between 0 and 15% of the value in mg/m3 of alarm threshold. - Led Clean + Middle Dust value between 16 and 33% of the value in mg/m3 of alarm threshold. - Led Middle Dust value between 34 and 50% of the value in mg/m3 of alarm threshold. - Led Middle Dust + Dust value between 51 and 66% of the value in mg/m3 of alarm threshold. - Led Dust value between 67 and 85% of the value in mg/m3 of alarm threshold. - Led Dust + High Dust value between 86 and 100% of the value in mg/m3 of alarm threshold. - Led High Dust value higher that alarm threshold.

ATTENTION ! At the first lighting without any calibration, the average values don’t have any correspondence with the plant values, thus is possible that these values could reach a full scale by activating the alarm relays. For this reason a virtual calibration is executed in the factory. Make the calibration of the instrument and the configuration of the relays in order to range the measured values with the plant values (see “SDM-1 CALIBRATION” ).

7 9 8

4-20mA OUTPUT

R

CURRENT LOAD

1 3 4 5 2 6

DUST LEV 1 DUST LEV 2


SDM1

SDM-1 CALIBRATION

The SDM-1 calibration bases itself on the comparison between the dust value detected by the remote probe RP-04 and the one known a priori (in mg/m3) as a result of a gravito-metric analysis, or by other way. N.B.: It is not possible to carry out the instrument calibration unless this data is available; however, an indicative value can be used for a preliminary calibration (at the expense of the reliability of the values pointed out below). It is advised to carry out the procedure once again with updated results and if it possible in concomitance or close to the gravito-metric withdrawal. The probe RP-04 measures the intensity of the tribo-electrical signal, and after an opportune conditioning, the probe is able to convert the signal in the original format, with normalised values with respect to the selected full scale for the probe,( that is to its capacity), and transmitting this full scale to the SDM-1 for the following elaborations. The instrument need a first calibration after the first mounting. Calibration is performed with few simple operations and you don’t need the help of qualified people. Let’s see in detail the calibration steps: PRELIMINARY OPERATIONS 1) Probe working check

The probe RP-04 measures the intensity of the tribo-electrical signal, and after an opportune conditioning, the probe is able to convert the signal in the original format, with normalised values with respect to the selected full scale for the probe,( that is to its capacity), and transmitting this full scale to the SDM-1 for the following elaborations.

2) Probe gain typing Through a mathematical proportion, you can reach the gain value with few operations:

- For the calculus, you need the value of gravito-metric analysis and alarm value that you want to set; - When you have these values, through a proportion we have the percentage value of the gravito-metric

analysis value:

alarm threshold (mg/m3) : 80% = analysis value (mg/m3) : X%

N.B. In this case we have to put the threshold alarm at 80% to avoid to carry the threshold reading at the limit.

- Put the potentiometer of alarm threshold on the percentage value that you got from the mathematical calculus;

- Spin the potentiometer till the red alarm red is activated; - this is the gain value

3) Alarm threshold - Once the potentiometer is activated on gain, you need to put it on the alarm threshold in

correspondence of the value decided in calculation stage: 80%.


SDM1

4-20mA OUTPUT FUNCTIONING

It is possible to create a changeable current within 4 and 20mA in order to cover the complete range between 0% and 100% (regulation range for alarm threshold.). The current output will have the following reference values: - 4mA value corresponds to 0 mg/m3 , that is 0%; - 20mA value corresponds to measurement range, that is 100% of the total scale; The intermediate current values will be linear on the total scale.

SDM-1 CONNECTION WITH TRIBO-ELECTRIC PROBE RP-04

Fixing the support pipe on the oblique side, through an autogenous welding to the conduct or chimney so that the spring holes to be turned downward according to the vertical ( the tube must create 7.5° angle compared to the horizontal surface) (photo 1 and 2). The hole on the chimney have to be of a diameter between 24,5mm and 26mm. The thickness of the chimney cloak have to be major or equal to 1,5mm.

In case of inferior thicknesses is advisable to reinforce the fixing system with a flange. (photo 2) Inserting the probe inside the pipe (the connector must be turned downward) and fixing the position with two screws . The gas flux must have the direction shown in figure (compared to the probe bar).

Photo 1. example of standard welding of a dinghy on the chimney

Welded support tube

Conduct

FLUX DIRECTION

Spring screws

RP-04 remote probe

MAX 150°C

MAX 50°C


SDM1

Picture 2. example of welding of a dinghy on the chimney with a reinforcement flange

N.B: the remote probe must be fixed (by welding the spring pipe with the correct angle) respecting a min. distance from any type of fortuity: curves, muffs etc…at least six times the conduct diameter. For example (see figure), if the conduct is large 10 the remote probe must be fixed considering a distance bigger than 60 or just as 60.

PROBE RP 04 ELECTRICAL CONNECTION IMPORTANT INSTALLATION RULES Never cut off the connector code 01000S0400145 with inserted tension. RP04 can be damaged irreparably.

Note 1 Cutting off the connector from the probe RP04 in case of electrical welding on the support structure and during the maintenance.

Note 2 In the connections of the probes RP04 use shielded cable Note 3 Don’t draw the probe from its place, unless the SDM1 supply has been cut off.

Note 5 The presence of rain or water in the sampled gases in relevant quantity can distort the signal reading.

Note 6 The container of the remote probe must be connected to the ground of the plant ( under pain of

serious measure errors) ; check the pipe to be welded electrically to the conduct and the latter to be connected to the ground of the plant.

Note 7 The connection cable between the tribo-electric probe and the SDM1 must have 5x0,5 mm section (min.), shielded. Connecting the shield to ground terminal on one side only.

60

10


SDM1

ANNOTATIONS:

ManDistr SDM1 Standard Eng 1 5

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