Pressure switches - Amplifiers

Transcription

1 Pressure switches Amplifiers Visit our website for further information

2 Pressure switch LCIE notification no LCIE 03 ATEX Q800 EC Type Examination Certificate LCIE 0 ATEX 6X Conformin to the Low Voltae Directive 73/3/EEC modified by Directive 93/68/EEC Type Fastenin Function Version Pressure switch II G Ex ia II C T6 3 DIN rail EN 00 pressure control with manual override Permitted fluids air, inert ases Adjustable pressure to make at at s at 4 s at 6 s Pressure indicator Temperature aient operatin C fluid C Maximum operatin voltae volts Construction POM, brass, AU4G Deree of protection CEI 9 Pneumatic connections Pushin for semiriid tube Ø 4 (NFE 4900) Electrical connections Builtin electrical connections Screw clamp terminals nuers Wire crosssection Clampin capacity at at Vcc 48 IP Electrical connection 3 4 Electrical connection Pressure to make adjustment 3 Manual override 4 Pneumatic display Control sinal Coon 4 NO contact open NC contact closed To order an product, you must complete the form on pae 3. 6

3 Pressure switch Important This pressure switch must be connected to an approved safety rier. Placed in a safe zone, this safety rier can be used to supply the pressure switch in a hazardous zone. Hazardous zone Safe zone 4 a U < 60 V R + Pressure switch Safety rier or interface = coon = NC contact closed 4 = NO contact open The electrical connection between the safety rier (or interface) and the pressure switch can be made usin ordinary wires or cables. The maximum voltae of the intrinsic safety power supply source should not exceed 60 V. L int 0 mh C int 0 F L int = pressure switch inductance C int = pressure switch capacity Recoended riers and interfaces These safety interfaces and riers, recoended by CROUZET, should be obtained from one of the manufacturers indicated below, specifyin that they are to be used to supply power to intrinsic safety pressure switch Type 8 3, CE 008 ll G, approval no. n LCIE 0 ATEX 6 X. For CROUZET intrinsically safe pressure switches Barriers/Interface Gas roup Part nuer Manufacturer Certificate Barriers Barriers Interface llc llc llc MTL7787+ BZC 4/0//A RDN MTL Georin Georin BASOTEX77 OATEX6070X OATEX604X CAUTION: If bein used in zone 0 a system certificate supplied by an approved body must be obtained. In zones and, the system interity should be checked with a loop calculation; iven that our product C = 0, cable C must be less than rier C. 7

4 Adjustable pressure switches (manostats) INERIS No. 840/0 explosive atmospheres conformin to Adjustment rane Version Accuracy b 8 b b 8 b % 4 % 4 % II G D c IIB 60 C(T6) X Neative output 0 % 4 % 4 % Orifice diameter Flow at 4 s Nl/min b 8 b Connection Subbase pae 3637 Operatin temperature C Connections Example of pressure threshold adjustment (minireulator manostats) Principle of operation The manostats provide an on or off output sinal when the input sinal reaches a predetermined pressure threshold. Neative output Output sinal Pilot Output sinal Pilot Switchin on Switchin on Switchin off Switchin off To order an product, you must complete the form on pae 3. 8

5 Adjustable vacuum switches (vacuostat) INERIS No. 840/0 explosive atmospheres conformin to Neative output II G D c IIB 60 C(T6) X Adjustment rane b Flow at 6 s Nl/min Connection Subbase pae 3637 Operatin temperature C Connections Example of use: Vacuum handin (vacuum enerator, vacuum pad, vacuostats) Principle of operation Vacuostats provide an on or off output sinal when the input sinal reaches a predetermined pressure threshold. Neative output Output sinal Output sinal Switchin on Switchin off Switchin on Switchin off Vacuum Vacuum Vacuum Vacuum To order an product, you must complete the form on pae 3. 9

6 Leak sensor relay INERIS No. 840/0 explosive atmospheres conformin to Output Positive Neative II G D c IIB 60 C(T6) X Operatin pressure Sensor consumption for relay Nl/min supply at 6 s The distance between relay and sensor must be less than m pour un tube Ø.7 x 4 Connection subbase see pae 3637 Operatin temperature C Other information Bases for mountin components see pae 67 To order an product, you must complete the form on pae 3. 0

7 Amplifier relays INERIS No. 840/0 explosive atmospheres conformin to Simple amplifiers Sensitive amplifiers Function Positive Neative II G D c IIB 60 C(T6) X Positive Neative Pressure to make Operatin pressure (nonlubricated air) Orifice diameter Averae consumption at 4 s Nl/min Permissible overload for hour Operatin temperature C Connections Used for aps up to. The supply to the sensor should be made via a pressure reulator or oneway restrictor (see pae 34). Connection subbase see pae 3637) Black b Black b Principle of operation Simple amplifier An output at normal industrial pressure is delivered on a low pressure input. NB: is 0% of the pilot pressure Pilot pressure Supply pressure Pa Neative output pilot supply 3 output Sensitive amplifier An output at normal industrial pressure is delivered on a very low pressure input. Pilot pressure Note: The specifications are iven for a supply pressure of 6 s, and for detection at the midpoint of the ap. Supply pressure Pa Pushin connection for semiriid tubin Ø 4 (NFE 4900) Other information With ap sensors, use an amplifier with neative output if you require a sinal on interruption of the jet. To order an product, you must complete the form on pae 3.

8 Amplifier relays INERIS No. 840/0 explosive atmospheres conformin to Amplifier with interal reulator Version II G D c IIB 60 C(T6) X Pressure to make Reduced pressure supplied at port 8 Flow throuh port 8 Nm 3 /h Consumption of amplifier only NI/h Permissible overload for hour Operatin temperature C Detectors Nominal rane Min. total consumption for detection (0. b reulated pressure) Max. total consumption for short response time (. b reulated pressure) Min. detectable nominal sensin distance dimensions Max. frequency of use Force exerced by the jet on the parts to be detected Principle of operation Pilot pressure NI/h NI/h Hz N This amplifiers is suitable for providin a supply to associated sensors Proximity Ø Ø Gap Ø Ø Ø Proximity Ø Ø 7 Ø Pushin connection for semiriid tubin Ø 4 (NFE 4900) Viewed from B Reulated pressure () Viewed from A Adjustable reulator To order an product, you must complete the form on pae 3.