C M FLOWMETERS (India) Pvt Ltd

SPECIFICATION SHEET

Specification No.

Rev.

Reviewed by & date

Approved by & date:

HP/3/1 

00

PART NAME: FLOWMETER ASSY WITH HYPOXIC GUARD (3-TUBE)

1

Oxygen Inlet

7/16” X 20T WF male thread, from rear bottom

2

N₂O Inlet

1/2” X 20T WF male thread, from rear bottom

3

Air Inlet

1/4” BSP male thread, from rear bottom

4

Mixed gas outlet

At top right, through 23mm taper as per ISO 5356-1

5

Control Knob Oxygen

White, with special profile as per ISO 5358

6

Control Knob N₂O

Blue serrated, serration depth <1mm, knob dia lower than Oxygen knob dia.

7

Control Knob Air

Black serrated, serration depth <1mm, knob dia lower than Oxygen knob dia.

8

Working pressure (max)

420 kPa (N₂O, O2 &AIR)

9

Oxygen Tube Range

0.1  0.1  – 10 l/min, with expanded scale at 0.1 – 1 l/min

Graduations in lpm unit

10

N₂O Tube Range

0.2  0.1  – 12 l/min, with expanded scale at 0.1 – 1 l/min

Graduations in lpm unit

11

Air Tube Range

0.3  0.1  – 15 l/min, with expanded scale at 0.1 – 1 l/min

Graduations in lpm unit

12

Float Colour

Red –for O2, N2O & AIR

13

Accuracy (N₂O, O₂&Air)

As per CM Standard

14

Tube length (N₂O, O₂&Air)

230 mm

15

Markings/identification

Float mark on tubes  & other markings

as per ISO 5358

16

Mounting

Back bar mounting, as per drawing

17

Housing

Aluminum frame with clear acrylic front

& Light coloured Luminous background.

18

N₂O flow opening/closing

Opening at 0.4-0.6 l/min Oxygen flow, while increasing

Closing at 0.2-0.3 l/min Oxygen flow, while decreasing

19

Oxygen / N₂O ratio

30 + 5% of O2 at all settings after N₂O flow opening.