产品品牌：德国BD sensors
产品名称：压力变送器，差压变送器
产品型号：DMK 456压力变送器
DMK 456压力变送器设计用于检测容器中的系统压力和液位，并经过船舶和海上应用认证。
其坚固的不锈钢现场外壳和在危险区域(温度等级T6)中的使用可以在极端操作条件下检测各种腐蚀性气体和液体的压力。DMK 456的基础是自行开发的电容式陶瓷传感器元件，其特点是高过载能力和介质电阻。
| Pressure ranges | |||||||||||||||
| Nominal pressure 1 [bar] | 0.04 | 0.06 | 0.1 | 0.16 | 0.25 | 0.4 | 0.6 | 1 | 1.6 | 2.5 | 4 | 6 | 10 | 16 | 20 |
| Level [mH2O] | 0.4 | 0.6 | 1 | 1.6 | 2.5 | 4 | 6 | 10 | 16 | 25 | 40 | 60 | 100 | 160 | 200 |
| Permissible overpressure [bar] | 2 | 2 | 4 | 4 | 6 | 6 | 8 | 8 | 15 | 25 | 25 | 35 | 35 | 45 | 45 |
| Permissible vacuum [bar] | -0.2 | -0.3 | -0.5 | -1 | |||||||||||
| 1 available in gauge and absolute; nominal pressure ranges absolute from 1 bar | |||||||||||||||
| Output signal / Supply | ||
| Standard | 2-wire: 4 ... 20 mA IS-version / VS = 14 ... 28 VDC VS rated = 24 VDC | |
| Performance | ||
| Accuracy 2 | standard: ≤ ± 0.25 % FSO options: PN ≥ 0.6 bar 3: ≤ ± 0.1 % FSO |
|
| Permissible load | Rmax = [(VS – VS min) / 0.02 A] W | |
| Long term stability | ≤ ± 0.1 % FSO / year at reference conditions | |
| Influence effects | supply: 0.05 % FSO / 10 V load: 0.05 % FSO / kW |
|
| Turn-on time | 700 msec | |
| Mean response time | < 200 msec | mean measuring rate 5/sec |
| Max. response time | 380 msec | |
| 2 accuracy according to IEC 60770 – limit point adjustment (non-linearity, hysteresis, repeatability) 3 Under the influence of disturbance burst according to EN 61000-4-4 (2004) +2 kV accuracy decreased to ≤ ± 0.25 % FSO. |
||
| Thermal effects / Permissible temperatures | ||
| Thermal error | ≤ ± 0.1 % FSO / 10 K in compensated range -20 … 80 °C | |
| Permissible temperatures | medium: -25 … 125 °C electronics / environment: -25 … 85 °C storage: -40 ... 100 °C |
|
| Electrical protection | ||
| Short-circuit protection | permanent | |
| Reverse polarity protection | no damage, but also no function | |
| Electromagnetic compatibility | emission and immunity according to - EN 61326 - DNV▪GL (Det Norske Veritas ▪ Germanischer Lloyd) |
|
| Mechanical stability | ||
| Vibration | 4 g (according to DNV▪GL: class B, curve 2 / basis: IEC 60068-2-6) | |
| Materials | ||
| Pressure port | stainless steel 1.4404 (316 L) | |
| Housing | stainless steel 1.4404 (316 L) | |
| Cable gland | brass, nickel plated others on request | |
| Seals | FKM; others on request | |
| Diaphragm | standard: ceramics Al2O3 96 % option: ceramics Al2O3 99.9 % | |
| Media wetted parts | pressure port, seals, diaphragm | |
| Category of the environment | ||
| Lloyd´s Register (LR) | EMV1, EMV2, EMV4 number of certificate: 13/20055 | |
| Det Norske Veritas ▪ Germanischer Lloyd (DNV▪GL) | temperature: D number of certificate: TAA00001GR humidity: B vibration: B electromagnetic compatibility: B enclosure: D |
|
| Explosion protection | ||
| Approval DX14A-DMK 456 | IBExU07ATEX1180 X zone 0: II 1G Ex ia IIC T6 Ga |
|
| Safety techn. maximum values | Ui = 28 V, Ii = 93 mA, Pi = 660 mW, Ci = 52.3 nF, Li = 5 µH, the supply connections have an inner capacity of max. 90.2 nF opposite the enclosure |
|
| Permissible temperatures for environment | -20 ... 60 °C in zone 0: with patm 0.8 up to 1.1 bar | |
| Miscellaneous | ||
| Ingress protection | IP 67 | |
| Installation position | any | |
| Current consumption | max. 21 mA | |
| Weight | min. 400 g (depending on housing and mechanical connection) | |
| Operational life | 100 million load cycles | |
| CE conformity | EMC Directive: 2014/30/EU | |
| ATEX Directive | 2014/34/EU | |
接线图：
| Pin configuration | |||||||||
| Electrical connections | field h | using (clam | p section: 2.5 | mm2) | |||||
| Supply + Supply – |
|
+ - |
|||||||
| Ground | |||||||||
| Dimensions (in mm) | |||||||||
产品结构图；
| dimensi | ns in mm | ||||
| DI | N 2501 | AN | SI | ||
| size | DN25/PN40 | DN50/PN40 | DN80/PN16 | 2"/150 lbs | 3"/150 lbs |
| b | 18 | 20 | 20 | 19.1 | 23.9 |
| d | 14 | 18 | 18 | 19.1 | 19.1 |
| D | 115 | 165 | 200 | 152.4 | 190.5 |
| f | 2 | 3 | 3 | 2 | 2 |
| g | 68 | 102 | 138 | 91.9 | 127 |
| k | 85 | 125 | 160 | 120.7 | 152.4 |
| n | 4 | 4 | 8 | 4 | 4 |
| pN [bar] | ≤ 40 | ≤ 40 | ≤ 16 | ≤ 10 | ≤ 10 |
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