CM Flowmeters (India) Pvt. Ltd.

Kasba, Kolkata, West Bengal

Features:-

1) 1 - 20 LPM O2 or Air for BPC Flow meter testing

2) 10 - 70 LPM O2 or Air for anesthesia machine outlet flow testing

3) 50 - 500 LPM O2 or Air for Regulator flow testing

4) 100 - 1000 LPM O2 or Air for Regulator flow testing

5) 300 - 3000 LPM O2 or Air for Regulator flow testing

6)  5 - 60 LPM Air for vacuum application

DESCRIPTIONThe CM flowmeters provide an economical means of flow rate indication and control for general use, and laboratory applications. The instruments are ideal for common applications like purging services, cooling water flow indication, bearing lubrication, carrier gas flow rate indication, fuel flow indication, in chromatography, atomic absorption, and indication and control of doping gas in electronic crystal growing furnaces. The table models are generally used for laboratory applications and also for calibration/verification of line instruments.

DESIGN FEATURES :

• Ten to one rangeability
• Heavy wall, precision bore, borosilicate glass metering tubes with contrasting background.
• Scales fused on metering tubes, or scales with conversion chart.
• Tube sealed on compression gaskets by threaded seal.
• Easy removable tubes without disconnecting the instrument.
• There is no metal side plate. Single piece acrylic covers front and side for easy visibility.

Flowmeter  are used for measuring  flow in Anesthesia Machine

Featurs:

• Conforms to ISO 5358
• Proven in meeting users‘ requirements.
• Permanent ceramic markings fused to glass
• Bobbin oat: aluminium alloy anodised red. with
• silver dot for easily observing rotation.
• Special design oat for rapid response to ow change
• Machine manufacturers‘ logo prinlieci if required.
• Colour coding for each gas.

FUNCTION

• The Flow Head incorporates the lollowing lunctions :
• Gas indexed pneumatic inlet ports
• N20 gas ow out off in the event of oxygen failure
• Flow control needle valves
• N20/O2 ow ratio hypoxic mixture prevention proportioning system
• Color coded, marked specific labels for flow tubes and ow control valves
• Gas mixing chamber, mixed gas outlet

GENERAL OPERATION

The Flow Head integrates 02 and N20 (the N20 is optional).

The O2 Air and N20 needle valves gas supply pressure is externally regulated to 400Kpa¢10Kpa as per standard.

The N20 channel incorporates a pressure cut-off valve. The O2 supply pressure in the circuit controls the output pressure of the pressure out-oft valve. Under all conditions of operation, the N20 flow shall reach zero before the O2 flow. ln this flow head the N20 pressure switch shall cut oft the ow of N20 before the O2 pressure drops below 50115Kpa.

Anaesthetic flowmeters are available in 2 – 5 tubes versions.  The flowmeters (2-5 tube versions) can be supplied with or without Anti Hypoxia Device.
The housings are made from Aluminum and fitted with fine adjustment valves for easy control of the anaesthetic gases. The front cover is  made from moulded acrylic. The devices have a phosphorescent “glow in the dark” (normally white) background for easy reading even in case of sudden darkness.
The knobs are made from finest quality ABS. The Oxygen knob has a touch coded profile and all the knobs are colour coded as per ISO 5358 requirements.
Internal gas connections are made using polyurethane tubes and Festo type connections. A non return valve in the downstream of the AHD ensures no flow of N2O in the respiratory circuit in the event of single fault condition when Oxygen line gets blocked.
Various options of inlet and outlet connections are available

Function 

The Flow Head incorporates the following Functions

• Gas indexed pneumatic inlet ports
• N20 gas flow cut off in the event of oxygen failure
• Flow control needle valves
• N20/O2 flow ratio hypoxic mixture prevention proportioning system
• Color coded, marked specific labels for ow tubes and ow control valves
• Gas mixing chamber, mixed gas outlet

GENERAL OPERATION

The Flow Head integrates O2 and N20.

The 02 Air and N20 needle valves gas supply pressure is externally regulated to 400Kpai10Kpa as per standard.

The N20 channel incorporates a pressure cut-oft valve. The 02 supply pressure in the circuit controls the output pressure of the pressure cut-off valve. Under all conditions of operation, the N20 ow shall reach zero before the 02 flow. In this ow head the N20 pressure switch shall cut off the flow of N20 before the 02 pressure drops below 50:15Kpa.

PERFORMANCE STANDARDS

Standard ow conditions defined at 20°C, 101 .3Kpa, (760mmHg) Conforms to ISO 5358 requirements.

Flow Tubes

•  Flow Tubes are calibrated for discharge into an ambient atmosphere of 101 .3Kpa at an operating temperature of 20°C.
• Each ow tube shall be calibrated to accuracy of 110% of reading, or better.
• Flow tubes withstand 690Kpa internal pressure without breaking.

Flow Control Valves

• Anti-clockwise rotation shall cause an increase inow.
• Flow control knob are color coded and touch coded. Smooth and precise rotation ensures accurate flow setting

PRESSURE CUT-OFF VALVE

• N20 regulated pressure shall drop with falling of 02 supply pressure and shall prograssively reduce flow of this gas while
• maintaining the proportion of 02 (22% min.) until O2 pressure falls to 50i15Kpa at which point the supply of N20 shall be cut off.
• The only means of restoring N20 flow after 02 supply failure (O2 pressure below 50i15Kpa) shall be the restoration of 02 pressure.

ASSEMBLY

Leakage from atmosphere shall not exceed 108ml/min. when a vacuum of 80cm H20 is applied to all internal.

MATERIALS

• All wetted material are compatible with all gases used and all anaesthetic agents.
• Equipment compiles with HoHS requirements.

DESIGN FEATURES :

• Ten to one rangeability
• Heavy wall, precision bore, borosilicate glass metering tubes with contrasting background
• Scales printed on metering tubes or scales with conversion chart
• Tube sealed on compression gaskets by threaded seal
• Easy removable tubes without disconnecting the instrument
• Metal (Aluminum or SS) side plates
• Clear acrylic front and back (with safety glass option)
• Available in Flange (series 8000) and Screwed connections (series 9000)

DESCRIPTIONThe CM series 8000 & 9000 flowmeters provide an economical means of on-line flow rate indication of various fluids. The instruments are ideal for process industry and also extensively used as master instrument for calibration of other flowmeters.

DESCRIPTIONThe CM series of flowmeters provide an economical means of flow rate indication and control for general use, and laboratory applications. The instruments are ideal for common applications like purging services, cooling water flow indication, bearing lubrication, carrier gas flow rate indication, fuel flow indication, in chromatography and atomic absorption and indication and control of doping gas in electronic crystal growing furnaces.

DESIGN FEATURES :

• Ten to one rangeability
• Heavy wall, precision bore, borosilicate glass metering tubes with contrasting background
• Scales fused on metering tubes, or scales with conversion chart
• Tube sealed on compression gaskets by threaded seal
• Easy removable tubes without disconnecting the instrument
• There is no metal side plate. Single piece acrylic covers front and side for easy visibility.