Parr Instrument 4560 User Manual

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4560 Mini Bench Top Reactors
Parr Instrument Company
Revision 6-28-02
OTHER VESSEL HEAD FITTINGS
Safety Rupture Disc
There is a safety rupture disc
attached to the head which is intended to
rupture and release the pressure before it
reaches a dangerous level. A metal tag
wired to the safety head identifies the burst
pressure at room temperature for that
particular disc. A similar tag is furnished
with each replacement disc. This tag must
remain with the apparatus at all times so
that both present and future operators will
be aware of the disc rating. Users should
read the discussion of rupture discs given in
the Operating Instruction No. 231M for a
complete description of the characteristics of
rupture discs and the precautions to be
observed when operating pressure
equipment protected by this type of safety
device.
A typical pre-bulged disc can be used
to 70% of the rating on the tag. For
additional protection, the user should install
an adequate and safe venting system for
removing any toxic, flammable or volatile
materials which would be released if the
rupture disc should burst. A connector for
attaching 1/4" OD tubing to the discharge
port of the rupture disc is provided for this
purpose.
Type J Thermocouple
A Type J Thermocouple in a 1/8"
diameter stainless steel sheath is installed in
each reactor. In reactors made of alloys
other than stainless steel, the stainless
thermocouple is installed in a thermowell
made of the same alloy as the vessel.
Connect the thermocouple to the socket on
the rear panel of the temperature controller
using the A470E2 extension wire furnished
with the reactor.
Pressure Gage
The pressure gage furnished with this
reactor has a T316 stainless steel Bourdon
tube. Gages are furnished in a variety of
ranges to meet individual needs. Typically,
the gage and the rupture disc are furnished
as matched ranges. For applications where a
gage is selected with a range under 1000 psi,
a relief valve is added and set to protect the
gage. A 1000 psi rupture disc is installed as
the fail-safe vessel protection.
For highly corrosive applications
where the vapor phase might corrode the
stainless Bourdon tube, Parr offers isolator
assemblies in a variety of materials. These
isolators with their internal piston isolate the
vapors from the gage.

Parr Instrument 4560 Specifications

General

Brand	Parr Instrument
Model	4560
Category	Laboratory Equipment
Language	English