CMM 500

High-precision flow meter for compressors — CMM 500

Спецификация CMM 500

Available on request
Delivery across Russia
Order phone: +7(800)777-18-50

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Description

The CMM 500 flow meter is a new type of device specifically designed for high-precision measurement of the volume of air delivered by a compressor and for accounting compressed air consumption.

The CMM 500 flow meter can be used both directly after the compressor to measure the flow of wet compressed air, and as a meter to measure the consumption of dry compressed air and calculate resource flow.

The flow meter design is based on a Venturi tube that meets all the requirements of the ISO 5167-3 standard regarding dimensional accuracy and surface quality. The internationally recognized ISO 5167 standard provides recommendations for accurate flow measurement using flow meters based on the differential pressure principle. Venturi tubes are extremely reliable, easy to handle, and require no special maintenance.

The main advantages of the Venturi tube compared to many other measurement systems are minimal pressure losses at high differential pressures, as well as shorter straight lengths before and after the flow meter.

The uniqueness of the device lies in its wide dynamic range of 1:130 and an error of less than 0.5% of the measured value (in the range from 0.2 of the maximum flow to the limit flow value).

The compact design, as well as the long-term reliability and high accuracy of the stainless steel diaphragm pressure sensors used, form the basis for accurate measurement of operating compressed air flow, operating volume, flow and volume normalized to standard conditions, pressure, differential pressure, and temperature using just one device.

The built-in valve block allows maintenance (zero point adjustment, condensate drain, sensor replacement for calibration) or repair at any time directly on site, even when the system is under pressure.

Advantages and Features

Error less than 0.5%, DIN EN ISO/IEC 17025 conformity certificate
Wide dynamic range 1:130
Fast response time, peak detection, no time delay for adaptation as with ultrasonic flow meters
No long straight sections required before and after the flow meter
Very low pressure losses less than 70 mbar at maximum flow
Flow meter suitable for any gas media (with gas density adjustment)
Operating pressure up to 10 bar, 30 bar, or 100 bar
Direct output of volumetric flow normalized to standard conditions in n.m³, n.m³/h (according to DIN 1343 or ISO 1217 standards)
Additional outputs: temperature display in °C or °F, pressure and differential pressure in bar or psi
Digital interfaces Modbus-RTU, Modbus TCP, POE, MBus, HART and analog output 4...20 mA
Explosion-proof version of the flow meter for combustible gases

Specifications
Overall dimensions drawing
Applications

Specifications
Measuring medium	air, gases
Accuracy (of measured value)	± 1% in the range from Qmin to 0.2 Qmax ± 0.5% in the range from 0.2 Qmax to Qmax
Standard accuracy when installing inlet/outlet sections from CS:	± 0.75% in the range from Qmin to 0.2 Qmax ± 0.3% in the range from 0.2 Qmax to Qmax
Measurement principle	differential pressure, Venturi tube
Dynamic measurement range	1:130
Response time	t 99: < 1 s
Medium temperature	-20°… +100 °C
Operating pressure	up to 16 bar, on request 30 bar / 100 bar
Ambient temperature	-30°… +70 °C
Power supply voltage	18 ... 36 V (DC)
Output signals	Standard output signals: RS 485 (Modbus-RTU), 4...20 mA, pulse. Optional: Ethernet interfaces, M-Bus
Process connection	Flanges DIN EN 1092-1 or ANSI
Installation position	On a horizontal line