INM MTL 130-0202 Rev 4
7
3.6 Katharometer/reactor assembly
This is shown below. It must be mounted upright as shown, in an ambient that is between
5°C and 55°C and not subjected to excessive vibration.
Figure 2
The katharometer’s inlet and outlet connections are suitable for ¼” dia. tubing. Any tube
attached to these must be capable of resisting moist chlorine and hydrogen chloride
mixtures. If PFA tubing or similar is fitted then it should be grooved using the appropriate tool
- obtainable from Swagelok (order code MS-GC-4) or from your local MTL Gas sales office.
Grooving the tube is an enhancement and is not essential at the stipulated maximum pressure
of the device. Note that to achieve an adequate seal the PFA (perfluoroalkoxy) coupling nuts
must be tightened down to their end-stops, and then until the hexagons sides of the nut and
fitting line up – See Fig. 3. Always support the body of the coupling with another tool when
tightening.
If an alternative to PFA tubing is used in the compression fitting then it must be sufficiently
rigid so as to prevent collapse when the nut is fully tightened. To prevent the possibility of
‘flash backs’ if exceptional hydrogen concentrations are experienced, it is advisable to fit
flame traps at the sample inlet and outlet. Do not pressurise the katharometer assembly to
greater than 1 barg (i.e. 1 bar gauge) i.e. no more than 0.1 MPa or 15 p.s.i.g.
When in measurement mode the internal katharometer pressure must be within ± 0.1 barg for
measurement accuracy.
Figure 3
Reactor Tube
FRAGILE!
Four mounting holes on
220mm x 130mm centres,
suitable for M6 (¼”) screws
WARNING
These parts run HOT
in normal operation
Outline of heat shield
240mm
150m
m
Inlet and outlet connectors
suitable for ¼” OD tubing.
See Fig. 3 for assembly details.
The tubing used must be resistant to
moist chlorine and hydrogen chloride.
Cables - approximately 2 metres
Side view
of
Katharometer Assembly
The katharometer serial
number MUST be the same
as that on the Katharometer
Identity Module (KIM).
See Control Electronics
drawing for the location.
Katharometer wires
1 - Green - Katharometer Sense 1
2 - Black - Katharometer Ground
3 - Red - Katharometer Sense 2
4 - Black - Katharometer Ground
5 - White - Katharometer Reference
6 - Black - Katharometer Ground
Reactor wires
7 - Green - Thermo
8 - White - Thermocouple -
(9) - White - Heater Supply
(10) - White - Heater Supply
18v AC from
controller
Reactor Furnace
Corrosion Resistant
Dual Katharometer
Serial No.
GKD 1234
HITECH INSTRUMENTS
120-0482-1
Sample
Out In
Maximum Pressure
200kPa ( 2 Bar ) ABS
120-0483-1
Front
Corrosion Resistant
Serial No.
GKD 0000
Dual Katharometer
¼ ” O .D .
P F A tu b e
P F A
c o m p r e s s io n
n u t
G r o o v e
R e a r fe r r u le -
d e fo r m s in to
g r o o v e
T ig h te n c o m p r e s s io n n u ts
u n til th e r e is n o g a p b e tw e e n
th e n u t a n d th e b o d y o f th e fittin g .
T h e n c o n tin u e tig h te n in g u n til th e
n u t a n d fittin g s h e x a g o n s id e s lin e u p .
F r o n t fe r r u le
C o r r o s io n R e s i s t a n t
D u a l K a t h a r o m e t e r
S e r i a l N o .
G K D X X X X
Corrosion Resistant
Serial No.
GKD 0000
Dual Katharometer
