DMH

DMH

DMH

Product catalog summary
Overview: The document provides technical specifications and details for the KOBOLD DMH Electromagnetic Flowmeter, designed for measuring the flow rate of conductive fluids without pressure loss. It operates based on Faraday's Law of Induction, where a voltage is induced as the fluid passes through a magnetic field.
Specifications:
  • Measuring Range: 0.05 to 40,376 m³/h
  • Accuracy: ±0.3% of reading ±0.01% x Qmax
  • Pressure and Temperature: Rated pressure up to PN40; temperature range from -20°C to +150°C depending on lining material
  • Connection: Flange sizes from DN 10 to DN 1200, ANSI ½" to 48"
  • Lining Materials: Hard rubber, soft rubber, PTFE, PFA
  • Outputs: Analogue with HART®, pulse, and status outputs
Technical Details:
  • Minimum Conductivity: ≥5 µS/cm for general fluids, ≥20 µS/cm for demineralised water
  • Repeat Accuracy: ±0.15% of reading ±0.005% x Qmax
  • Process Temperature: Varies with lining material, up to +150°C for PTFE
  • Ambient Temperature: -20°C to +60°C
  • Protection Type: IP67, IP68
Components:
  • Sensor Materials: Linings include hard rubber, soft rubber, PTFE, PFA, E-CTFE; electrodes made from stainless steel, Hastelloy® C4, tantalum, platinum
  • Housing: Enamelled steel or stainless steel
  • Process Connection: Various options including steel or stainless steel flanges, wafer version, foodstuff connections
Applications: Suitable for measuring acids, alkalis, pastes, drinking water, and wastewater.
Transducer Details:
  • Assembly Type: Compact or separate
  • Power Supply: Options include 115 VAC, 230 VAC, and 24 VDC
  • Outputs: Analogue, pulse, and status outputs, all galvanically isolated
  • Communication: HART® protocol
  • Diagnostic Functions: Includes empty pipe recognition and flushing flow monitoring
Measuring Range Table: Provides detailed flow rate ranges for various flange sizes and pressure ratings, highlighting the versatility of the flowmeter across different applications.
Dimensions: Detailed dimensions for sensor and transducer components, including weight approximations.
See more

Catalog excerpts

DMH-1

Electromagnetic Flowmeter Accuracy: ± 0.3% of reading ± 0.01% x Qmax C onnection: flange DN 10 ... 1200, ANSI ½" ... 48" Lining material: hard rubber, soft rubber, PTFE / PFA Outputs: analogue with HART®, pulses and status OO KOBOLD companies worldwide: ARGENTINA, AUSTRALIA, AUSTRIA, BELGIUM, BULGARIA, CANADA, CHILE, CHINA, COLoMBIA, CZECHIA, EGYPT, FRANCE, GERMANY, GREAT BRITAIN, HUNGARY, INDIA, INDONESIA, ITALY, MALAYSIA, MEXICO, NETHERLANDS, PERU, POLAND, Republic of Korea, ROMANIA, SINGAPORE, SPAIN, SWITZERLAND, TAIWAN, THAILAND, TUNISIA, turkey, USA, VIETNAM KOBOLD Messring GmbH Nordring 22-24 D-65719 Hofheim/Ts. Head Office: +49(0)6192 299-0 +49(0)6192 23398 info.d

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DMH-2

Electromagnetic Flowmeter Model DMH Description The KOBOLD DMH flowmeter is used to measure and monitor the volume flow rate of fluids, pulps, pastes and other electrically conductive materials, without loss of pressure. When an electrically conductive medium passes through a directional magnetic field, a voltage is induced in accordance with Faraday’s Law of Induction. The size of this measurement voltage is proportional to the mean rate of flow and consequently also to the volume flow rate. A flowmeter consists of a sensor that picks up the measuring signal generated from the induced voltage,...

 Open the catalog to page 2
DMH-3

Electromagnetic Flowmeter Model DMH Technical Details(continued) Transducer UMF2(B) Assembly type: compact or separate Housing: enamelled die-cast aluminium Power supply: 115 VAC, 50 / 60 Hz, 10 VA 230 VAC, 50 / 60 Hz, 10 VA 24 VDC 10 W Outputs Analogue: x 0(4)-20 mA, active, galvanically 1 isolated Pulse output: passive, galvanically isolated 24 V, 60 mA Status: passive, galvanically isolated 24 V, 60 mA Ambient temperature: -20 … +60  °C, depending on process temperature for compact version Protection type: IP 68 (EN60529) Communication: HART® Diagnosis functions: empty pipe recognition, flushing...

 Open the catalog to page 3
DMH-4

Electromagnetic Flowmeter Model DMH No responsibility taken for errors; subject to change without prior notice.

 Open the catalog to page 4
DMH-5

Electromagnetic Flowmeter Model DMH Order Details (Example: DMH-1 A15 H 1 0 A 1 0) Model/ flangematerial Versions/ cable lengths Power supply/ cable entry point A = compact, IP 67 B ... H, IP 67 B = separate version/2.5 m C = eparate s version/5 m D = eparate s version/10 m E = separate version/15 m H6) = hard rubber W6) = soft rubber T7) = PTFE/ PFA F = separate 08) = without version/ 20 m 1 = UMF2(B)1 = stainless electronics 1 = stainless G = separate steel with control steel version/ 30 m unit, without 3 = HastelHART® H = eparate s loy® C4 3 = Hastelloy® C4 version/ 50 m 2 = UMF2(B)4 = Titan...

 Open the catalog to page 5
DMH-6

Electromagnetic Flowmeter Model DMH Connection box for sensor, separate version 205 Sensor, flange connection * Weights of the sensors are only approximate values, including the weight of the electronics approx. 2.4 kg 6 No responsibility taken for errors; subject to change wit

 Open the catalog to page 6
DMH-7

Electromagnetic Flowmeter Model DMH Dimensions (continuation) Sensor, wafer flange * eights of the sensors are only approximate values, including the weight of W the electronics approx. 2.4 kg No responsibility taken for errors; subject to change without prior notice.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.