KROHNE DK37 Series Supplementary Instructions Manual Download Page 5 | Manualshive

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DEVICE DESCRIPTION

2

5

DK37/M8 - H250/M8

www.krohne.com

05/2018 - 4005351602 - AD DK37/H250/M8 II2GD R02 en

2.1 Device description

Variable area flowmeters measure and display the volume flow of flammable and non-
flammable gases and liquids.

Figure 2-1: Available indicators

1

Indicator M8E.: one signal output 4...20 mA with a bargraph indicator

2

Indicator M8M.: up to two separately adjustable electrical limit switches

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Summary of Contents for DK37 Series

Page 1: ...d Db in protection type intrinsic safety i DK37 M8 H250 M8 DK37 M8 H250 M8 DK37 M8 H250 M8 DK37 M8 H250 M8 Supplementary Instructions Supplementary Instructions Supplementary Instructions Supplementar...

Page 2: ...ducts 9 2 5 Equipment category 9 2 6 Types of protection 10 2 7 Ambient temperature temperature classes product temperature 11 2 8 Surface temperature for equipment category II 2 D 13 2 9 Electrical d...

Page 3: ...rds was checked by a notified body in accordance with EN 60079 0 2012 and EN 60079 11 2012 The EU declaration of conformity for the equipment category II 2 G and II 2 D is based on the EU type examina...

Page 4: ...Assembly installation start up and maintenance may only be performed by personnel trained in explosion protection CAUTION The operator or his agent is responsible for observing any additional standard...

Page 5: ...1 Device description Variable area flowmeters measure and display the volume flow of flammable and non flammable gases and liquids Figure 2 1 Available indicators 1 Indicator M8E one signal output 4 2...

Page 6: ...with ceramic liner HC Hastelloy Ti Titanium F Food 3 Type series of indicators Type series of indicators Type series of indicators Type series of indicators M8 Indicator M8 4 Design of indicator M8 D...

Page 7: ...converter 37 Type series of signal converter 37 3 Type series of indicators Type series of indicators Type series of indicators Type series of indicators M8M mechanical indicator M8E electronic indic...

Page 8: ...r item PA order Vxxx product configurator code AC article code Additional plate The association of the housing cover to the device is confirmed by an additional plate with the serial number on the int...

Page 9: ...use in zone 1 Depending on the device version variable area flowmeters are also designed in category II 2 D or EPL Db for use in zone 21 The inside of the measuring unit is also approved for zone 1 W...

Page 10: ...T6 T3 T6 T3 Temperature class range suitable for temperature classes T6 T1 Gb Gb Gb Gb EPL suitable for zone 1 and zone 2 INFORMATION For the equipment category II 2 G and EPL Gb connection to an intr...

Page 11: ...ue to differing boundary conditions e g liner materials Here the user should consult the technical data sheet The maximum product temperature is outlined in the following tables DK37 M8 permissible pr...

Page 12: ...emperature maximum value Type H250 M8EG Type H250 M8MG at 64 mW Type H250 M8MG at 169 mW C F C F C F C F T6 40 104 85 185 85 185 40 104 50 122 85 185 60 140 85 158 T5 40 104 100 212 100 212 100 212 50...

Page 13: ...t 2 9 Electrical data Built in equipment for the variable area flowmeter may only be connected to separate intrinsically safe circuits with the following maximum values Type Electrical built ins Min a...

Page 14: ...series H250 with wetted parts made of titanium TI option use the protected installation to prevent sparking due to external impact and friction between titanium and other materials Thermal and electri...

Page 15: ...ing cables must be fixed and laid so they are sufficiently protected against damage Not used cores must be securely connected to the earth potential of the hazardous area or carefully insulated agains...

Page 16: ...s supplied via the signal circuits 4 3 Inputs Outputs The terminal assignment of the built in electrical equipment is described in the product documentation The signal circuits of the variable area fl...

Page 17: ...und terminal is illustrated below The connection only ensures an electrostatic connection of the device and does not comply with the requirements of an equipotential bonding connection For the H250 M8...

Page 18: ...inoperable during operation Adjusting the limit switch and operating the display during operation is permitted To do so remove the housing cover Close the housing cover immediately after the adjustme...

Page 19: ...g the display Replacing the display Replacing the display Due to the modular design of the variable area flowmeters from a safety perspective the complete display can be replaced with identical spare...

Page 20: ...ices Head Office KROHNE Messtechnik GmbH Ludwig Krohne Str 5 47058 Duisburg Germany Tel 49 203 301 0 Fax 49 203 301 10389 info krohne com KROHNE 05 2018 4005351602 AD DK37 H250 M8 II2GD R02 en Subject...

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