MANUFACTURING
PROCESS
These
instruments are manufactured using our own Indian
Patent for making the tapered glass metering tube
in a novel way. Each and every instrument is individually
crafted.
Borosilicate
glass tubes are ground and polished to a high
precision internal taper. A float is prepared
using anodised aluminium. The tube is then calibrated,
using a standard precision master. Markings are
made on the glass surface of the tube against
this master. These are then fused on the glass
surface, becoming permanent in the process of
annealing in an electric furnace. The markings
on the tubes are then re-checked using another
standard master. Besides providing calibrated
meter tubes, the instrument set is also provided
in an elegant, anodised aluminium / powder-coated
frame. A luminous reading plate is also provided.
A
special feature of our process is the possibility
of giving an Expanded Scale at any desired range
of flow, within the specific flow range. Etching
and markings on the metering glass tubes are also
made using ceramic based colours.
The
float is of the Rotating type, which are superior
to the non-rotating ones. Reading is from the
top level of the float. (Non-rotating floats may
sometimes get stuck somewhere in the metering
tube due to accidental ingress of tiny particles
of dirt, or for any other reason, and this will
usually remain unnoticed. This may mislead the
operator, resulting in serious consequences. A
rotating type of float will stop rotating in such
a situation, thereby inviting the operator's attention
to the improper functioning of the instrument.)
The
pipe line connections are of the standard screwed
type. Tubes are fitted with leak proof Neoprene
Rubber O-rings.
The
gaskets are made of moulded Neoprene rubber. The
end stops are made from plastic.
PRODUCT
Chemicals
& meters manufactures Rotameters or variable
area flow Meters. These instruments are vital
in all situations where the rate of flow of liquid
or gas inside a pipe line or tubing is to be measured
with a high degree of accuracy. CM medical rotameters
give a highly accurate and reliable indication
of gas flow rates in anaesthesia machines.
BRAND
The
products bears the brand C & M. Virtually every
occasion of anaesthesia-aided surgery in India is
supported by CM medical rotameters.
SPECIFICATIONS
For
medical use flow meters (in anaesthesia machines),
the uniform specification provided is 100 cc to
8,000 cc per minute for Oxygen and 200 cc to 12,000
cc per minute for Nitrous Oxide. Assumed temperature
for use of the machine is 20 degrees Celsius, and
pressure of 60 PSI. End connections are three eights
inch UNF for Oxygen and half inch UNF for Nitrous
Oxide.
The
manufactured flow meters conform to Indian Standards
specifications for Continuous Flow Inhalation Anaesthetic
Apparatus (Anaesthetic Machines) for Use with Humans,
i.e. ISO 5358 - 1980.
MANUFACTURING
PROCESS
These
instruments are manufactured using our own Indian
Patent for making the tapered glass metering tube
in a novel way. Each and every instrument is individually
crafted.
Borosilicate
glass tubes are ground and polished to a high precision
internal taper. A float is prepared using anodised
aluminium. The tube is then calibrated, using a
standard precision master. Markings are made on
the glass surface of the tube against this master.
These are then fused on the glass surface, becoming
permanent in the process of annealing in an electric
furnace. The markings on the tubes are then re-checked
using another standard master. Besides providing
calibrated meter tubes, the instrument set is also
provided in an elegant, anodised aluminium / powder-coated
frame. A luminous reading plate is also provided.
A
special feature of our process is the possibility
of giving an Expanded Scale at any desired range
of flow, within the specific flow range. Etching
and markings on the metering glass tubes are also
made using ceramic based colours.
The
float is of the Rotating type, which are superior
to the non-rotating ones. Reading is from the top
level of the float. (Non-rotating floats may sometimes
get stuck somewhere in the metering tube due to
accidental ingress of tiny particles of dirt, or
for any other reason, and this will usually remain
unnoticed. This may mislead the operator, resulting
in serious consequences. A rotating type of float
will stop rotating in such a situation, thereby
inviting the operator's attention to the improper
functioning of the instrument.)
The
pipe line connections are of the standard screwed
type. Tubes are fitted with leak proof Neoprene
Rubber O-rings.
The
gaskets are made of moulded Neoprene rubber. The
end stops are made from plastic.
QUALITY
/ SAFETY/ APPROVAL
The
products are tested in-house against a Standard
Precision Master Flowmeter, which in turn is regularly
tested and re-calibrated.
The
products are being manufactured from 1967 and are
recognised as the most reliable, high quality products
of their kind available in India.
PRICE & DELIVERY
We
provide both the pair of tubes (for Oxygen, Nitrous
Oxide) without any mounting, as well as a mounted
set.
Price
may vary depending on the volume of the order and
prospect of further orders. Prices are ex-works,
excluding packaging and freight.
Our
usual terms of payments are: 30% advance against
order, rest against proforma invoice, through bank,
against delivery documents. Exceptions may also
be made for regular customers.
Delivery
8-10 weeks from receipt of order with full specifications.The
products are tested in-house against a Standard
Precision Master Flowmeter, which in turn is regularly
tested and re-calibrated.
The
products are being manufactured from 1967 and are
recognised as the most reliable, high quality products
of their kind available in India. PRODUCT WARRANTY
A warranty is given for a period of 12 months from
the date of supply - provided the instrument is
used in a proper manner as per our operation manual.
We usually send the instrument fully assembled.
In order to protect the metering tube from possible
damage by the metallic float inside it, we push
tightly soft ribbon or the like from either end,
to hold the float in a fixed position during transit.
The whole assembled instrument is suitably packed
in a sturdy container, with appropriate supports.
WARRANTY
A warranty is given for a period of 12 months from
the date of supply - provided the instrument is
used in a proper manner as per our operation manual.
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