Variable-area flow meter DK 37
for gasfor liquids4-20 mA

variable-area flow meter
variable-area flow meter
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Characteristics

Technology
variable-area
Fluid
for liquids, for gas
Communication
4-20 mA, HART
Protection level
heavy duty, ATEX, IP67, IP66, SIL 2
Applications
for low flow rates
Volumetric flow rate

Max.: 8,000 l/h
(2,113.3764 us gal/h)

Min.: 1.6 l/h
(0.4227 us gal/h)

Process temperature

Max.: 150 °C
(302 °F)

Min.: -80 °C
(-112 °F)

Process pressure

Max.: 130 bar
(1,885.49 psi)

Min.: 0 bar
(0 psi)

Description

Variable area flowmeter for advanced low liquid and gas flows* Mechanical or with electronic indicator (4…20 mA/HART®) * Sturdy metal design: stainless steel or alloy * Thread: G1⁄4, 1⁄4 NPT; others * -40…+150°C / +302°F; max. 220 barg / 3190 psig The DK37 M8 is a variable area (VA) flowmeter with electrical signal output and bargraph indication or mechanical indicator with two optional limit switches. The versatile all-metal measuring device is suitable for flow measurement of gases and liquids. Due to its sturdy design, the VA meter can be used at temperatures up to +200°C / +392°F or pressures up to 220 barg / 3190 psig. It is fitted with a needle valve as standard to accurately set the flow value. The DK37 M8 comes with vertical or horizontal process connections for NPT or G thread, flange adapters and many other connection options. To provide constant flow rates in case of variable inlet or outlet pressures, the VA meter is also available with flow regulators. It has approvals for hazardous areas and is suitable for use in Safety Instrumented Systems (SIS). Product highlights * Simple, low-cost installation: Able to measure and display without auxiliary power supply * Purgemeter with 2 optional limit switches or 4…20mA/HART® for flow monitoring * Various stainless steel and alloy sensor materials * Optional surface passivation with SilcoNert®2000 for trace-level analysis * PPS housing as standard, stainless steel housing as option * Ingress protection IP66/67 * Full scale value for liquids: 1.6…250 l/h / 0.4…67 GPH * Full scale value for gases: 16…8,000 l/h / 0.6…300 SCFH * Turndown ratio 10:1 * Accuracy: ±2.5% (acc. to VDI/VDE 3513, sheet 2)
*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.