Overview
The H250 M40 is the standard variable area (VA) flowmeter for the process and OEM industry. The VA meter combines mechanical flow measurement of liquids or gases with state-of-the-art communication capabilities. The device is modularly extendable. Additional electronic modules can be added or replaced at any time without process interruption. In this way, its functionality adapts to new requirements – from analogue flow measurement without auxiliary power to digital integration into a fieldbus system.
Product features and options depend on device configuration: Contact us to make sure that your preferred functionality can be combined in one device.
- * Simple, low-cost installation: able to measure and display without auxiliary power supply
- * Unique modularity and serviceability: Limit switches, 2-wire 4…20mA, totalizer with LCD and pulse output, fieldbus interfaces
- * NE 107 device and application diagnostics with CFM (Continuous Float Monitoring), e.g. for float blockade detection
- * Universal ex-concept: Explosion proof and intrinsically safe
- * Various stainless steel and alloy sensor materials
- * Optional stainless steel housing for corrosive atmospheres
- * Ingress protection IP66 and IP68 / NEMA4X and NEMA6, IP69K optional
- * Full scale value for liquids: 10…120,000 l/h / 5…32,000 GPH
- * Full scale value for gases: 0.7…2800 m3/h / 25…100,000 SCFH
- * Turndown ratio 10:1 (optional 100:1)
- * Maximum measuring error: ±1.6% (acc. to VDI/VDE 3513-2) or ±1.5% of full scale
- * Suitable for use in Safety Instrumented Systems with SIL 2, in redundant design (1oo2) also in SIL 3 applications (type A device)
- * Optional hygienic design for use in the food and pharmaceutical industry
Depending on selected device configuration
General information
Product type Flowmeter Product family name H250 Product positioning For liquids and gases Measurement principle Variable area float Measured media Liquids, Gases Operating conditions
Process pressure max. 1000 barg/
14500 psigProcess temperature -196…+400°C/
-320…+752°FMaterials
Measuring tube Austenitic stainless steel (1.4404/316L), Austenitic stainless steel (1.4435/316L), Austenitic alloy (2.4610/Alloy C4), Nickel alloy (2.4360/Alloy 400), Titanium alloy (3.7035/Ti-Grade 2), Austenitic stainless steel (1.4571/316Ti), Nickel-chrome-molybdenum-tungsten alloy (2.4819/Alloy C276), Nickel-chromium-molybdenum-niobium alloy (2.4856/Alloy 625), Austenitic stainless steel (1.4547/6Mo) Gaskets None Process connection Austenitic stainless steel (1.4404/316L), Austenitic stainless steel (1.4571/316Ti), Nickel alloy (2.4360/Alloy 400), Austenitic alloy (2.4610/Alloy C4), Nickel-chrome-molybdenum-tungsten alloy (2.4819/Alloy C276), Nickel-chromium-molybdenum-niobium alloy (2.4856/Alloy 625), Titanium alloy (3.7035/Ti-Grade 2), Austenitic stainless steel (1.4547/6Mo) Process connections
Flange connections EN (1092-1): DN15…150
ASME (B 16.5): ½…6"
JIS (B 2220): 15…100AThread connections Female:
G½, G¾, G1¼, G1, G1½, G1¾, G2
½ NPT, ¾ NPT, 1 NPT, 2 NPTHygienic connections Clamp (DIN 32676): DN15, DN25, DN32, DN40, DN50, DN80
Clamp (ISO 2852): 25, 40, 51, 76.1
Tri-Clamp: ½", 1", 2"; Threaded ferrule (DIN 11851): DN15, DN25, DN40, DN50, DN80
Threaded ferrule (DIN 11864-1A,series C): 1", 2"
Flange with groove (DIN 11864-2A): DN15, DN25, DN50, DN80
Threaded ferrule (SMS 1146): 25 mm, 51 mm, 76 mmApprovals/Standards
Certificates/Approvals Nuclear Nuclear qualification on request (e.g. acc. to ASME III, RCC-M/E, etc.) Certificates/Approvals Ex ATEX, IECEx, NEPSI, EAC Ex, cFMus, INMETRO, KCs, PESO, UKEX Certificates/Approvals Hygienic FDA, EC 1935/2004, GB 4806 Certificates/Approvals Marine RINA Certificates/Approvals Others CRN, NACE Certificates/Approvals Safety SIL 2 Communication
Analogue outputs 4…20 mA Discrete outputs Limit switches, Pulse Digital outputs FOUNDATION™ fieldbus, HART®, Profibus-PA
KROHNE H250 M40 Variable area flowmeter
Variable area flowmeter for liquids and gases
* Modular design: from mechanical indicator to 4…20 mA/HART®7, FF, Profibus-PA and totalizer
* Any installation position: vertical, horizontal or in fall pipes
* Flange: DN15…150 / ½…6"; also NPT, G, hygienic connections, etc.
* -196…+400°C / -320…+752°F; max. 1000 barg / 14500 psig
* Modular design: from mechanical indicator to 4…20 mA/HART®7, FF, Profibus-PA and totalizer
* Any installation position: vertical, horizontal or in fall pipes
* Flange: DN15…150 / ½…6"; also NPT, G, hygienic connections, etc.
* -196…+400°C / -320…+752°F; max. 1000 barg / 14500 psig
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