- DL manuals
- Samson
- Valve Positioners
- 3731-3
- Mounting and operating instructions
Samson 3731-3 Mounting and operating instructions
Summary of 3731-3
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Series 3731 type 3731-3 electropneumatic ex d positioner with hart ® communication mounting and operating instructions eb 8387-3 en firmware version 1.61 edition may 2017 fig. 1 · type 3731-3 eb + cd.
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2 eb 8387-3 en danger! Indicates a hazardous situation which, if not avoided, will result in death or serious injury. Warning! Indicates a hazardous situation which, if not avoided, could result in death or serious injury. Notice indicates a property damage message. Note: supplementary explanations,...
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Contents 1 important safety instructions . . . . . . . . . . . . . . . . . . . . . . 6 2 article code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 design and principle of operation . . . . . . . . . . . . . . . . . . . . 8 3.1 additional equipment . . . . . . . . . . . . . . . . ....
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7.5.1 initialization based on max maximum range . . . . . . . . . . . . . 51 7.5.2 initialization based on nom nominal range . . . . . . . . . . . . . . 52 7.5.3 initialization based on man manually selected range . . . . . . . . . 53 7.5.4 sub substitute calibration . . . . . . . . . . . . . . . . ...
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Modifications to positioner firmware compared to the previous version 1.41 (old) 1.42 (new) after performing a reset to default values, the allocation of the closing position air to open (ato) /air to close (atc) is not reset to the default setting. The setting is kept. 1.42 (old) 1.51 (new) all exp...
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1 important safety instructions for your own safety, follow these instructions concerning the mounting, start up and opera- tion of the positioner: 4 the positioner is to be mounted, started up or operated only by trained and experienced personnel familiar with the product. According to these mounti...
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2 article code positioner type 3731 - 3 x x x x x x x 0 0 x 1 x 0 0 0 with lcd, autotune, hart ® communication explosion protection atex: ii 2g ex d iic t6, t5, t4 gb; ii 2g ex de iic t6, t5, t4 gb; ii 2d ex tb iiic t80°c db ip 66 2 1 fm: class i, div. 1+2, groups b, c, d; class i, zone 1, groups ii...
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3 design and principle of operation the electropneumatic ex d positioner is mounted on pneumatic control valves. It is used to assign the valve stem position (con- trolled variable x) to the control signal (ref- erence variable w). The electric control sig- nal received from a control system is com-...
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Software or on site at the positioner. A con- stant air stream to the atmosphere is created by the flow regulator (9) with a fixed set point. The air stream is used to purge the in- side of the housing as well as to optimize the air capacity booster (7). The i/p con- verter (6) is supplied with a co...
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4 transfer switching state [default] the switching state of the binary input is logged. 4 set local operation write protection settings cannot be changed at the positioner while the binary input is ac- tive. The configuration enabled function in code 3 is not active. 4 switch between auto/man the po...
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3.3 technical data eb 8387-3 en 11 design and principle of operation type 3731-3 ex d positioner (technical data in test certificates additionally apply for explosion-protected devices) rated travel adjustable direct attachment to type 3277: 3.6 to 30 mm attachment acc. To iec 60534-6 (namur): 3.6 t...
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12 eb 8387-3 en design and principle of operation type 3731-3 ex d positioner (technical data in test certificates additionally apply for explosion-protected devices) air output capacity to fill actuator with air at ∆ p = 6 bar: 8.5 m n ³/h · at ∆ p = 1.4 bar: 3.0 m n ³/h · k vmax(20 °c) = 0.09 to v...
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Eb 8387-3 en 13 design and principle of operation additional equipment optional binary output, software limit switch, galvanically isolated connection: optionally namur en 60947-5-6 or plc, configurable as a limit switch or fault alarm output signal status terminals b-c switching output ac/dc (plc) ...
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Summary of explosion-protection certificates type 3731 certificate type of protection/comments -321 ec-type examination certificate number ptb 11 atex 1014 x ii 2g ex d iic t6,t5,t4 gb; ii 2g ex de iic t6,t5,t4 gb; ii 2d ex tb iiic t80°c db ip66 date 2012-07-26 number ru c-de-gb08.B.00697 1ex d iic ...
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4 attachment to the control valve – mounting parts and accessories warning! Attach the positioner, keeping the following sequence: 1. Mount the positioner on the control valve 2. Connect the supply air 3. Connect the electrical power 4. Perform the start-up settings the positioner is suitable for th...
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16 eb 8387-3 en attachment to the control valve – mounting parts and accessories travel tables note: the lever m is included in the scope of delivery. Levers s, l, xl for attachment according to iec 60534-6 (namur) are available as accesso- ries (see table 3 on page 32). Direct attachment to type 32...
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4.1 direct attachment 4.1.1 type 3277-5 actuator refer to table 1 on page 30 for required mounting parts and accessories. Actuator with 120 cm² notice if a solenoid valve or similar is additionally mounted to the actuator, observe the follow- ing instructions which differ from the instruc- tions oth...
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It in the hole for pin position 25 and screw tight. 9. Insert formed seal (15) into the groove of the positioner housing, pressing the four retaining rings over the housing screws and both fittings into the hous- ing recesses. 10. Thread the bias spring (17) through the crosspiece underneath the lev...
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Eb 8387-3 en 19 attachment to the control valve – mounting parts and accessories 9 11 supply 9 output 38 5 6 4 17 7 6 10 10.1 3 2 1 15 6.1 1.1 1.2 14 8 11.1 a a-a a fig. 4 · direct attachment for type 3277-5 actuator with 120 cm² switchover plate (9) 1 lever 1.1 nut 1.2 disk spring 2 follower pin 3 ...
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4.1.2 type 3277 actuator refer to table 2 on page 31 for the required mounting parts and accessories. Actuators with 175 to 750 cm² mount the positioner onto the yoke as shown in fig. 5. The signal pressure is routed to the actuator over the connection block (12), for actuators with fail-safe action...
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Eb 8387-3 en 21 attachment to the control valve – mounting parts and accessories 2 17 10 14 15 1 2 3 11 supply 13 b 1.1 1.2 12 12.1 12 12.2 12.1 12 16 16 16 12.2 supply ansicht b ansicht a ansicht c suppl y g g 3/8 11.1 a c fig. 5 · direct attachment – signal pressure connection for type 3277 actuat...
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9. Mount cover (11) on the other side. Make sure that the vent plug (11.1) points to the back when the control valve is installed to allow any con- densed water that collects to drain off. 4.2 attachment according to iec 60534-6 (namur) refer to table 3 on page 32 for the required mounting parts and...
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Eb 8387-3 en 23 attachment to the control valve – mounting parts and accessories 10 11 1 1 14.1 3 3.1 16 15 14 1 1.2 1.1 2 9.1 9 6 7 8 6.1 fig. 6 · attachment according to iec 60534-6 (namur) 1 lever 1.1 nut 1.2 disk spring 2 follower pin 3 follower plate 3.1 follower plate 6 connecting plate (only ...
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6.2 screw the long follower pin (2) in- cluded in the mounting kit in the pin position of the required lever (1) assigned in the table. 6.3 place lever (1) on the positioner shaft and screw tight using the disk spring (1.2) and nut (1.1). 6.4 move the lever once all the way as far as it will go in b...
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Eb 8387-3 en 25 attachment to the control valve – mounting parts and accessories counterclockwise clockwise 10.1 11.1 9 11 12.1 6 2 1 1.2 1.1 7 8 6.1 10 9.1 3 9.2 9.3 fig. 7 · attachment to type 3510 micro-flow valve lever s 1 lever 1.1 nut 1.2 disk spring 2 follower pin 3 follower plate 6 connectin...
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4.4 attachment to rotary actuators refer to table 4 on page 33 for the required mounting parts and accessories. Both mounting kits contain all the necessary mounting parts. First select correct actuator size. Prepare actuator, and mount required adapter supplied by the actuator manufac- turer, if ne...
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Eb 8387-3 en 27 attachment to the control valve – mounting parts and accessories 6 6.1 7 8 1 1.1 1.2 2 4.1 3 10.1 10 11 5 4.3 4 4.2 4.1 3 5.1 5 10.1 10 4.3 4 4.2 fig. 9 · attachment to rotary actuators fit screw restriction into signal pressure output for actuators with 6 connecting plate (only for ...
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4.5 reversing amplifier for double-acting actuators for the use with double-acting actuators, the positioner must be fitted with a reversing amplifier, e.G. The samson type 3710 re- versing amplifier (see mounting and oper- ating instructions eb 8392 en). If a different reversing amplifier (item no....
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29 eb 8387-3 en attachment to the control valve – mounting parts and accessories a 1 1.5 1.6 1.3 1.2 1.1 1 1.6 z a 2 1.4 a1 a2 z a1 output 38 supply 9 output 38 supply 9 1.3 1.2 1.1 fig. 10 · mounting a reversing amplifier (1079-1118 or 1079-1119) from the positioner control signals to the actuator ...
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4.6 required mounting parts and accessories 30 eb 8387-3 en attachment to the control valve – mounting parts and accessories table 1 · direct attachment to type 3277-5 (fig. 4) order no. Mounting parts for actuators with 120 cm² effective diaphragm area 1400-7452 version compatible with paint for ac...
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Eb 8387-3 en 31 attachment to the control valve – mounting parts and accessories table 2 · direct attachment to type 3277 (fig. 5) order no. Mounting parts standard version for actuators with 175, 240, 350, 355, 700, 750 cm² 1400-7453 accessories required piping with screw fitting – for "actuator st...
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32 eb 8387-3 en attachment to the control valve – mounting parts and accessories table 3 · attachment to namur ribs or control valves with rod-type yokes (20 to 35 mm rod diameter) according to iec 60534-6 (figs. 6 and 7) order no. Travel in mm lever for actuators 7.5 s type 3271-5 actuator with 60/...
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Eb 8387-3 en 33 attachment to the control valve – mounting parts and accessories table 4 · attachment to rotary actuators (figs. 8 and 9) order no. Mounting parts attachment acc. To vdi/vde 3845 (september 2010), see section 12.1 for details actuator surface corresponds to level 1 size aa1 to aa4, h...
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5 connections warning! Mount the positioner, keeping the following sequence: 1. Mount the positioner on the control valve 2. Connect the supply air 3. Connect the electrical power 4. Perform the start-up settings the connection of the electrical auxiliary power may cause the actuator stem to move, d...
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5.1.1 signal pressure gauges to monitor the supply air (supply) and sig- nal pressure (output), we recommend that pressure gauges be attached (see accesso- ries in tables 1 to 5). 5.1.2 supply pressure the required supply pressure (of supply air) depends on the bench range and the actua- tor's opera...
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5.2 electrical connections 36 eb 8387-3 en connections danger! Risk of the formation of an explosive atmosphere! 4 the following standard applies for assembly and installation in hazardous areas: en 60079-14 (vde 0165 part 1) explosive atmospheres - electrical installations design, selection and ere...
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Eb 8387-3 en 37 connections connection to conform with the type of protection ex i (en 60079-11): for connection to a certified, external instrinsically safe circuit, the terminal compartment of the positioner may be opened within the hazardous area. Only the terminal compartment is to be opened wit...
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Cable entry the threaded connections for the terminal compartment are designed with ½ npt or m20x1.5 threads. The electrical connections are screw termi- nals for wire cross-sections of 0.2 to 2.5 mm² using a tightening torque of at least 0.5 nm. The wires for the reference variable are to routed to...
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Eb 8387-3 en 39 connections a b c a option + 11...35 v dc _ a b c + _ a b c a b c 0...24 v dc a b c 4...20 ma hart® signal a b c l/+ 0...40 v dc 0...28 v ac n/_ fig. 12 · electrical connections control signal polarity insensitive forced venting 2-wire transmitter supply unit for position transmitter...
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5.2.1 establishing communication communication between pc and the fsk modem or handheld communicator and positioner is based on the hart ® protocol. Type viator fsk modem rs-232 usb not ex not ex order no. 8812-0130 order no. 8812-0132 if the load impedance of the controller or control station is to...
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Note: communication errors may occur when the process controller/control station output is not hart-compatible. For adaptation, the z box (order no. 1170-2374) can be installed between out- put and communication interface. At the z box a voltage of 330 mv is re- leased (16.5 Ω at 20 ma). Alternative...
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6 operator controls and readings 6.1 rotary pushbutton the rotary pushbutton ( ) is located under- neath the front protective cover. The positioner is operated on site using the rotary pushbutton: turn to select codes and values. Press to confirm setting. 6.2 serial interface the serial interface co...
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Each error. Classifications include “no message”, “maintenance required”, “maintenance demanded”, “out of spec- ification” and “maintenance alarm“ (see section 8.3). 4 configuration enabled this indicates that the codes marked with an asterisk (*) in the code list (section 11) are enabled for config...
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44 eb 8387-3 en operator controls and readings % s mm % mm fig. 15 · readings and operator controls condensed state: maintenance alarm designation position parameter limit switch alarm 1 manual mode closed-loop operation configuration enabled code bar elements for system deviation or lever position ...
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6.4 hart ® communication the positioner must be supplied with at least 3.8 ma current. A dtm file (device type manager) conform- ing to the specification 1.2 is available for communication. This allows the device, for example, to be run with the pactware oper- ator interface. All the positioner's pa...
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7 start-up – settings warning! Attach the positioner, keeping the following sequence: 1. Mount the positioner on the control valve 2. Connect the supply air 3. Connect the electrical power 4. Perform the start-up settings reading on display after connecting the electrical auxiliary power: 4 testing ...
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Notice perform the start-up settings in the same se- quence as listed (section 7.1 to section 7.5). 7.1 adapting the display the reading on the display can be turned by 180° to adapt it to how the positioner is at- tached. Reading direction for right attachment of pneumatic connections reading direc...
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7.3 checking the operating range of the positioner to check the mechanical attachment, the valve should be moved through the operat- ing range of the positioner in the manual mode using the manual reference variable w. Select manual operating mode (man) : mode default: man turn → code 0 press , code...
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7.4 allocating the closed position taking into account the type of valve and the operating direction of the actuator, allocate the closed position (0 % travel): 4 air to open (ato) signal pressure opens the valve. Fail-close 4 air to close (atc) signal pressure closes the valve. Fail-open notice dou...
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Notice if the positioner is mounted onto another ac- tuator or its mounting position is changed, reset the positioner to its default settings be- fore re-initializing it. Refer to section 7.7. During initialization the positioner adapts it- self optimally to the friction conditions and the signal pr...
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7.5.1 initialization based on max maximum range the positioner determines travel/angle of rotation of the closing member from the closed position to the opposite side and adopts this travel/angle of rotation as the operating range from 0 to 100 %. Enable configuration: note: if no settings are enter...
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Enter pin position: pin position default: no turn → code 4 press , code 4 blinks. Turn → pin position on lever (see rele- vant section on attachment). Press . The reading of the nominal range appears in mm/°. 7.5.2 initialization based on nom nominal range the calibrated sensor allows the effective ...
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Press select initialization mode: initialization mode default: max turn → code 6 press , code 6 blinks. Turn → nom press to confirm the nom initialization mode. Start initialization: initialization fail-safe position setting progress indicated until initialization starts turn → code 0 press , code 0...
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Turn until the open position of the valve is reached. Press to confirm the open position. Enable configuration: note: if no settings are entered within 120 seconds, the enabled configuration function becomes invalid. Configuration enabled default: no turn → code 3, display: no press , code 3 blinks....
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7.5.4 sub substitute calibration a complete initialization procedure takes several minutes and requires the valve to move through its entire travel range several times. This initialization mode, however, is an emergency mode, in which the control parameters are estimated and not deter- mined by an i...
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Select initialization mode: initialization mode default: max turn → code 6 press turn → sub press to confirm the sub initialization mode. Enter direction of action: direction of action default: ää turn → code 7 press , code 7 blinks. Turn → direction of action (ää/äæ) press deactivate travel limit: ...
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Blocking position default: 0 turn → code 34 press , code 34 blinks. Turn → closing direction (ccl counter- clockwise/cl clockwise) press turn → code 35 press , code 35 blinks. Turn → blocking position, e.G. 5 mm (read off at travel indicator scale of the blocked valve or measure with a ruler). Press...
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Press the positioner changes to automatic mode (auto). The current valve position is indi- cated in % on the display. Note: if the positioner shows a tendency to hunt in automatic operating mode, the pa- rameters k p and t v must be slightly cor- rected. Proceed as follows: – set t v (code 18) to 4....
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Press display: man, code 0 blinks. Turn → init press the setting of the fail-safe position ato or atc appears. Keep pressed down for 6 seconds. Zero calibration is started, the positioner moves the control valve to the closed posi- tion and recalibrates the internal electrical zero point. 7.7 reset ...
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8 operation warning! The actuator stem moves while the positioner is being operated. Do not touch the actuator stem or obstruct it to avoid risk of injury to hands or fingers. 8.1 enabling and selecting parameters all codes with their meanings and default settings are listed in the code list in sec-...
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8.2 operating modes 8.2.1 automatic (auto) and manual (man) modes after initialization has been completed suc- cessfully, the positioner is in automatic mode (auto). Automatic mode switching to manual mode (man) turn → code 0 press , display: auto, code 0 blinks. Turn → man press to switchover to ma...
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8.2.2 fail-safe position (safe) if you want to move the valve to fail-safe po- sition determined during start-up (see sec- tion 7.4), proceed as follows: turn → code 0 press , display: current operating mode (auto or man), code 0 blinks. Turn → safe press , display: s the valve moves to the fail-saf...
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4 out of specification the positioner is operated outside speci- fied operating conditions. Note: if an event is assigned to the “no message” status, this event does not have any effect on the condensed state. The condensed state is represented by the following icons on the positioner display: conde...
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9 maintenance the positioner does not require any mainte- nance. There are filters with a 100 µ m mesh size in the pneumatic connections for supply and output which can be removed and cleaned, if required. The maintenance instructions of any up- stream supply air pressure reducing stations must be o...
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11 code list code no. Parameter – display, values [default setting] description note: codes with marked with an asterisk (*) must be enabled with code 3 prior to configuration. 0 operating mode [man] auto · safe esc auto automatic mode man manual mode safe fail-safe position esc escape in man and au...
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Code no. Parameter – display, values [default setting] description note: codes with marked with an asterisk (*) must be enabled with code 3 prior to configuration. 4* pin position [no] 17, 25, 35, 50, 70, 100, 200, 300 mm 90° with rotary actuators esc note: if you select a pin position in code 4 tha...
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Code no. Parameter – display, values [default setting] description note: codes with marked with an asterisk (*) must be enabled with code 3 prior to configuration. 7* direction of action w/x [ää] äæ esc direction of action of the reference variable w in relation to the travel/angle of rotation x (in...
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Code no. Parameter – display, values [default setting] description note: codes with marked with an asterisk (*) must be enabled with code 3 prior to configuration. 11* travel/angle upper limit (upper x-limit ) 50.0 to 120.0 [100] % of the operating range no · esc limitation of the travel/angle of ro...
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Code no. Parameter – display, values [default setting] description note: codes with marked with an asterisk (*) must be enabled with code 3 prior to configuration. 14* setpoint cutoff decrease (final position w 0.0 to 49.9 [1.0] % no · esc if reference variable w reaches the percentage adjusted that...
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Code no. Parameter – display, values [default setting] description note: codes with marked with an asterisk (*) must be enabled with code 3 prior to configuration. 19* tolerance band 0.1 to 10.0 [5] % of the operating range esc used for error monitoring determination of the tolerance band in relatio...
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Code no. Parameter – display, values [default setting] description note: codes with marked with an asterisk (*) must be enabled with code 3 prior to configuration. 24* limit of total valve travel 1000 to 99 · 10 7 [1 000 000] exponential reading from 9999 travel cycles onwards esc limit value of tot...
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Code no. Parameter – display, values [default setting] description note: codes with marked with an asterisk (*) must be enabled with code 3 prior to configuration. 28* alarm test reading direction: standard turned [no] [no] run 1 1 run run 2 2 run run 3 3 run esc esc testing the software limit switc...
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Code no. Parameter – display, values [default setting] description note: codes with marked with an asterisk (*) must be enabled with code 3 prior to configuration. 32* “function check” alarm no · [yes] esc the condensed state can be used for a fault alarm output over the optional binary contact and ...
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Code no. Parameter – display, values [default setting] description note: codes with marked with an asterisk (*) must be enabled with code 3 prior to configuration. 40 minimum transit time open 0 to 240 s [0 s] time [s] needed by the system (positioner, actuator and valve) to move through the nominal...
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Code no. Parameter – display, values [default setting] description note: codes with marked with an asterisk (*) must be enabled with code 3 prior to configuration. 47* write protection hart [no] · yes esc when the write protection function is activated, device data can only be read, but not overwrit...
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Initialization errors error codes – recommended action condensed state message active, when prompted, err appears. When fault alarms exist, they are displayed here. 50 x > range the value supplied by the measuring signal is either too high or too low, the measuring sensor is close to its mechanical ...
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Error codes – recommended action condensed state message active, when prompted, err appears. When fault alarms exist, they are displayed here. 53 initialization time exceeded (init time >) the initialization routine lasts too long. • no pressure on the supply line or there is a leak. • supply air fa...
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Operational errors error codes – recommended action condensed state message active, when prompted, err appears. When fault alarms exist, they are displayed here. 57 control loop additional alarm at the fault alarm output control loop error, the control valve does not react within the tol- erable tim...
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Hardware errors error codes – recommended action condensed state message active, when prompted, err appears. When fault alarms exist, they are displayed here. 62 x signal additional alarm at the fault alarm output determination of the measured data for the actuator has failed. Conductive plastic ele...
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Error codes – recommended action condensed state message active, when prompted, err appears. When fault alarms exist, they are displayed here. 65 hardware additional alarm at the fault alarm output initialization key jammed (firmware version 1.51 and higher) a hardware error has occurred, the positi...
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Data errors error codes – recommended action condensed state message active, when prompted, err appears. When fault alarms exist, they are displayed here. 68 control parameter additional alarm at the fault alarm output control parameter error status classification [maintenance required] recommended ...
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Error codes – recommended action condensed state message active, when prompted, err appears. When fault alarms exist, they are displayed here. 75 info parameters info parameter errors that are not critical for the control. Status classification [maintenance required] recommended action confirm error...
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Diagnosis errors error codes – recommended action condensed state message active, when prompted, err appears. When fault alarms exist, they are displayed here. 79 diagnostic alarms error messages are generated in the extended expertplus diag- nostics (refer to eb 8389 on expertplus valve diagnostics...
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12 dimensions in mm 84 eb 8387-3 en dimensions in mm 70 15 46 34 14 122 95 34 53 28 npt ½, ¼ 58 58 236 output supply fig. 16a · attachment to iec 60534-6 and direct attachment attachment acc. To iec 60534-6 → direct attachment → pressure gauge bracket or connecting plate (g ¼ only) ¼ npt electrical ...
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Eb 8387-3 en 85 dimensions in mm 80 52 output y 1 output y 2 supply (9) output y 1 output y 2 56 86 130 80 166 30 86 Ø 101 fig. 16b · attachment to rotary actuators vdi/vde 3845 (sept. 2010), level 1, size aa1 to aa4 a 1 z a 2 56 86 130 80 166 30 86 Ø 101 76 50 output a2 output a1 supply (9) type 37...
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12.1 fixing levels according to vdi/vde 3845 (september 2010) 86 eb 8387-3 en dimensions in mm a m6 c b 25 m min Ød Ød level 2 (bracket surface) level 1 (actuator surface) actuator dimensions in mm size a b c ∅ d m min ∅ d* aa0 50 25 15 5.5 for m5 66 50 aa1 80 30 20 5.5 for m5 96 50 aa2 80 30 30 5.5...
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13 appendix 13.1 selecting the valve characteristic the characteristics that can be selected in code 20 are shown in following in graph form. Note: a characteristic can only be defined (user-defined characteristic) using a workstation/ operating software (e.G. Trovis-view). Linear (select characteri...
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Samson butterfly valve linear (select characteristic: 3) samson butterfly valve equal percentage (select characteristic: 4) vetec rotary plug valve linear (select characteristic: 5) vetec rotary plug valve equal percentage (select characteristic: 6) segmented valve ball linear (select characteristic...
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Index a accessories. . . . . . . . . . . . . . . . . . . 30, 32 additional equipment binary contact . . . . . . . . . . . . . . . . . . 9 binary input. . . . . . . . . . . . . . . . . . . 10 forced venting . . . . . . . . . . . . . . . . . . 9 position transmitter. . . . . . . . . . . . . . . 9 arti...
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M maintenance. . . . . . . . . . . . . . . . . . . . . 64 malfunction. . . . . . . . . . . . . . . . . . . . . . 62 manual mode . . . . . . . . . . . . . . . . . . . . 61 mounting parts . . . . . . . . . . . . 30, 32 - 33 o operating modes . . . . . . . . . . . . . . 42, 61 operating range man manua...
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Samson ag · mess- und regeltechnik weismüllerstraße 3 · 60314 frankfurt am main, germany phone: +49 69 4009-0 · fax: +49 69 4009-1507 internet: http://www.Samson.De eb 8387-3 en 2 0 1 7 -0 5.