Pfeiffer Vacuum IMR 420 User manual

OPERATING INSTRUCTIONS
Translation of the original instructions
IMR 420, IMR 430
Bayard-Alpert and Extractor Gauges, Temperature Resistant Gauge Head Cable

2 BG 5034 BEN (2017-01) IMR420_430.oi
Meaning of the sticker "Calibration", 12).
In all communications with Pfeiffer Vacuum, please specify the information on the
product nameplate.
Specimen nameplate
This document applies to products with part numbers
PT T07 359 900 (IMR 420, Bayard-Alpert Gauge)
PT T08 359 900 (IMR 430, Extractor Gauge)
PT 548 332 -T (Gauge head cable, 3 m)
PT 548 333 -T (Gauge head cable, 5 m)
PT 548 334 -T (Gauge head cable, 10 m)
PT 548 338 -T (Gauge head cable, 50 m)
PT 548 342 -T (Gauge head cable, temperature resistant 200 °C, 3 m)
PT 548 343 -T (Gauge head cable, temperature resistant 200 °C, 5 m)
PT 548 344 -T (Gauge head cable, temperature resistant 200 °C, 10 m)
PT 548 348 -T (Gauge head cable, temperature resistant 200 °C, 50 m)
The part number (No:) can be taken from the product nameplate.
If not indicated otherwise in the legends, the illustrations in this document corre-
spond to the IMR 420 Bayard-Alpert gauge. They apply to the IMR 430, extractor
gauge by analogy.
We reserve the right to make technical changes without prior notice.
All dimensions in mm.
The references to diagrams, e.g. (2/3), consist of the fig. no. and the item no. in
that order.
The IMR 420 is a Bayard-Alpert measurement system and the IMR 430 is an ex-
tractor measurement system for connection to an IMG 400 operating unit. Opera-
tion of these passive sensors is based on the hot cathode ionisation effect.
The temperature resistant gauge head cable must not be exposed to a tempera-
ture exceeding 200 °C max. (250 °C at the flange of the sensor).
The IMR 420 and IMR 430 gauges may only be used for the measurement of total
pressures in vacuum systems and this only in connection with the IMG 400 opera-
ting unit.
Sticker
Product Identification
Validity
Description
Intended Use

BG 5034 BEN (2017-01) IMR420_430.oi 3
Gauge
Operating Instructions
Gauge head cable with plug fitted on the equipment side and with touch protection
Housing with cover (supplied separately)
Ion collector cable
Mounting bolts (supplied separately)
Operating Instructions
Scope of Delivery
Gauges
Temperature resistant
gauge head cable

4 BG 5034 BEN (2017-01) IMR420_430.oi
Contents
Sticker 2
Product Identification 2
Validity 2
Description 2
Intended Use 2
Scope of Delivery 3
1 Safety 5
1.1 Symbols Used 5
1.2 Personnel Qualifications 5
1.3 General Safety Instructions 5
1.4 Liability and Warranty 5
2 Technical Data 6
3 Installation 8
3.1 Montage 8
3.2 Connecting the Temperature Resistant Gauge Head Cable 8
4 Operation 12
5 Maintenance 13
5.1 Exchanging the Cathode 13
6 Spare Parts, Accessories 14
7 Storage 15
8 Returning the Product 15
9 Disposal 16
Appendix 17
A: Conversion Table 17
B: Literature 17
EU Declaration of Conformity 18
For cross-references within this document, the symbol ( XY) is used; for cross-
references to further documents listed under Literature, use is made of the symbol
( [Z]).

BG 5034 BEN (2017-01) IMR420_430.oi 5
1 Safety
DANGER
Information on preventing any kind of physical injury.
WARNING
Information on preventing extensive equipment and environmental damage.
Caution
Information on correct handling or use. Disregard can lead to malfunctions or
minor equipment damage.
Notice
Skilled personnel
All work described in this document may only be carried out by persons who
have suitable technical training and the necessary experience or who have been
instructed
Adhere to the applicable regulations and take the necessary precautions for the
process media used.
Consider possible reactions with the product materials ( 6).
Adhere to the applicable regulations and take the necessary precautions for all
work you are going to do and consider the safety instructions in this document.
Before beginning to work, find out whether any vacuum components are conta-
minated. Adhere to the relevant regulations and take the necessary precautions
when handling contaminated parts.
Communicate the safety instructions to all other users.
Pfeiffer Vacuum assumes no liability and the warranty is rendered null and void if
the end-user or third parties
disregard the information in this document
use the product in a non-conforming manner
make any kind of interventions (modifications, alterations etc.) on the product
use the product with accessories not listed in the corresponding product docu-
mentation.
1.1 Symbols Used
Symbols for residual risks
1.2 Personnel Qualifications
1.3 General Safety
Instructions
1.4 Liability and Warranty

6 BG 5034 BEN (2017-01) IMR420_430.oi
2 Technical Data
IMR 420 IMR 430
Materials exposed to vacuum
Lead-in pins NiFe
Insulator Al203 ceramic, glazed
Pin sealing plate NiFe
Flange stainless steel
Cathode iridium with yttrium oxide coating
Anode Pt/Ir 90/10 and
Mo/Pt wrapped wire
Mo and CoNiCr
Collector tungsten
Reflector NiFe
Flange connection DN 40 CF
Electrode system configuration Bayard-Alpert Extractor system
Ambient temperature during
operation +20  +80 °C
Max. flange temperature with tem-
perature resistant gauge head cable 250 °C
Max. bake-out temperature without
plug 400 °C
Storage temperature +20  +50 °C
Relative humidity
Annual average
On 60 days
65% (non-condensing)
85% (non-condensing)
Use within indoor rooms only,
altitude up to 2000 meters above sea level
X-ray limit <1×10-11 hPa <1×10-12 hPa
Upper limit of measuring range 1×10-2 hPa 1×10-4 hPa
Lower limit of measuring range 2×10-11 hPa 2×10-12 hPa
Max. bake-out temperature 200 °C
(250 °C at the gauge head flange)
Insulation materials used PTFE, PEEK
Length 3 m, 5 m, 10 m, 50 m
IMR 420 IMR 430
Collector potential 0 V
Cathode potential +80 V +100 V
Anode potential +220 V +220 V
Reflector potential  +205 V
Emission current range 0.1  10 mA 1.6 mA
Cathode heater current 1.5 A (typ.)
Cathode heater voltage 3 V (typ.) 3.7 V (typ.)
Sensitivity for nitrogen 17 hPa (typ.) 6.25 hPa (typ.)
Max. power when baking out 90 mA / 480 V 45 mA / 480 V
General gauge head data
Heat resistant gauge head cable
Operating characteristics when
used with control unit IMG 400

BG 5034 BEN (2017-01) IMR420_430.oi 7
Fig. 1 Dimensions in mm
Dimensions [mm]

8 BG 5034 BEN (2017-01) IMR420_430.oi
3 Installation
Caution
As a rule, all ionisation measurement systems must only be operated
in connection with a properly earthed pump system.
Installation and mounting may only be carried out with the operating
unit switched off.
Caution
When connecting the vacuum gauges to the vacuum system it must
be strictly observed that during operation the gauges are not subjected
to mechanical oscillations, impact or vibrations.
The mounting position of the gauge heads has no influence on proper
operation. It is not permissible to install a venting valve in the immedi-
ate vicinity. The then suddenly occurring air flow may result in mecha-
nical damage to the sensitive cathode.
When installing several gauge heads at one common component
(T-piece or cross for example) an optical separation is required. The
gauge heads may not directly "see" each other. Interactions may
cause incorrect measurements.
Humidity at the insulators (2/14) caused by condensing water for ex-
ample , can give rise to incorrect measurements due to leakage cur-
rents.
Caution
Do not use force to connect the plug. When plugging in make sure first
that all pins are lined up in parallel and are straight. Otherwise the
current feedthrough can suffer damage.
DANGER
DANGER: Live Voltages
If during operation the IMG 400 suffers a malfunction then a live vol-
tage may be present at the gauge head cable connection (CH 1,
CH 2).
Affix the touch protection component at the IMG 400 (BNC plug). The
touch protection component is supplied together with the gauge head
cable.
Caution
Switch the gauge off first before working at the gauge cable. After
switching off, wait for at least 15 seconds.
3.1 Montage
Connecting the gauge head
cable and the extension cable
3.2 Connecting the
Temperature Resistant
Gauge Head Cable

BG 5034 BEN (2017-01) I
Disas
s
for co
n
resist
a
Conn
e
resist
a
the fla
n
MR420_430.oi
s
embling the
n
necting the
a
nt gauge he
e
cting the te
m
a
nt gauge he
n
ge on the
g
gauge hea
d
temperatur
e
ad cable
m
perature
ad cable to
g
auge head
Remov
e
from th
e
The ga
u
tions wi
t
(2/4).
For this
and the
differen
t
Fig.
2
V
p
f
C
d
c
B
h
(
c
l
d
e
the plug gui
d
e
gauge head
u
ge head IMR
t
h a greater d
i
reason three
plug guide (2
t
bolt diamete
The temp
e
after the g
a
2
Connection
V
ia the high-t
e
p
lugs so that
t
f
lange (2/1).
C
onnect the t
e
d
epicted in fig
c
oded
B
olt the housi
n
h
ead flange (
2
(
2/5 and 2/6)
a
c
ure the entir
e
ief (2/10).
d
e (2/4) by un
(2/1).
R
420 has bee
n
i
stance betw
e
spacers hav
e
/4). Positioni
n
rs on the gau
g
e
rature resista
a
uge head ha
of the gauge
e
mperature c
a
t
hese may the
e
mperature r
e
. 3. The indivi
d
n
g (2/13) ont
o
2
/1) again wit
h
a
nd the 3 spa
c
e
cable with th
s
crewing the
c
n
designed in
en gauge he
a
e
been fitted b
e
g of the plug
g
g
e head (2/1).
nt gauge hea
d
s
already bee
1 Ga
2 Sp
a
3 Sp
a
4 Pl
u
5 Cy
l
6 Cy
l
7 Io
n
8 Co
9 Lid
10 Str
11 Te
m
he
a
12 Ca
13 Ho
14 Ins
h
ead
a
ble pull the h
o
reafter be scr
e
sistant gauge
d
ual wires of
t
o
the gauge
h
the bolts
c
ers. Se-
e strain re-
c
ylinder head
accordance
w
a
d flange (2/1
)
e
tween gaug
e
g
uide is defin
e
.
d
cable may
a
e
n installed.
a
uge head
acer for M3 s
c
acer for M4 s
c
u
g guide
linder head s
c
linder head s
c
n
collector ca
b
o
untersunk sc
r
d
r
ain relief
mperature re
s
a
d cable
a
ble groove
o
using
s
ulators (10 p
c
o
using (2/13)
ewed back o
n
e
head cable t
o
t
he gauge he
a
screws (2/5
a
w
ith the VDE r
)
and plug gui
d
e
head flange
e
d through th
e
a
lso be conne
c
c
rew
c
rew
c
rew M3
c
rew M4
b
le (coax.)
r
ews (M3 × 1
5
s
istant gauge
c
s.)
over the con
n
n
to the gauge
o
the gauge h
e
a
d cable are
c
9
a
nd 2/6)
egula-
d
e
(2/1)
e
c
ted
5
)
n
ection
head
e
ad as
c
olor-

10
F
i
r
F
itting the g
a
ncluding the
r
esistant gau
a
uge head
temperatur
e
u
ge head ca
b
T
i
n
F
m
c
o
e
b
le
Now th
e
at the c
e
Secure
screws
he gauge he
a
n
serted into th
Bef
o
pos
s
or removing
o
m
ust be unloc
k
o
ver (2/9) firs
t
Es
p
car
e
ing
DA
If d
tag
e
CH
Affi
tou
c
ca
b
e
ion collector
e
ntre of the g
a
the cover (2/
9
(2/8).
a
d including t
h
e vacuum ch
a
o
re connectin
g
s
ible run a va
c
o
r replacing th
k
ed in the gau
t
.
Caut
p
ecially note t
h
r
e. Do not sub
j
of the curren
t
DAN
G
NGER: Live
V
uring operati
o
e may be pre
s
2).
x the touch p
r
ch protection
b
le.
cable (2/7) c
a
a
uge head.
9
) with the co
u
h
e temperatur
e
a
mber and bo
l
g
, we recomm
c
uum test or
a
e gauge hea
d
ge head hou
s
i
on
h
e pin assign
m
j
ect the pin c
o
t
feedthrough
/
G
ER
V
oltages
o
n the IMG 40
0
s
ent at the ga
u
r
otection com
p
component is
a
n be inserted
u
ntersunk
e
resistant ga
u
l
ted on.
end to pump
d
a
direct leak s
e
d
proceed in t
h
ing, and for t
h
m
ent. Provide
o
ntacts to any
leak)
0
suffers a m
a
u
ge head cab
p
onent at the
I
supplied tog
e
BG 5034 B
E
d
u
ge head cab
d
own the sys
t
e
arch.
h
e reverse or
d
h
is reason un
s
e
the connecti
o
bending forc
e
a
lfunction the
n
b
le connection
IMG 400 (BN
C
e
ther with the
E
N (2017-01) IMR420_430
l
e can be no
w
t
em and if
d
er. The plug
s
crew the
o
n with great
e
s! (Damag-
n
a live vol-
(CH 1,
C
plug). The
gauge head
.oi
w

BG 5034 BEN (2017-01) IMR420_430.oi 11
Color IMR 430 IMR 420
ye / green LP2) LP2)
grey jumper 1)
blue reflector 1)
red anode anode
brown cathode cathode
white cathode cathode
pink jumper 1)
1) Function not available for
IMR 400 but must be connected.
2) LP (longest pin) = protective
earth conductor (for facilitating
installation)
Fig. 3 View onto the gauge head

12 BG 5034 BEN (2017-01) IMR420_430.oi
4 Operation
Each IMR 420 / IMR 430 gauge head has been individually calibrated in the course
of final factory testing. This ensures a high accuracy of the pressure readout.
In order to calibrate making use of the calibration factor given on the sticker in the
Operating Instructions ( "Sticker", 2), it is required to set the IMG 400 operating
unit to "Cal_Full". Calibration process Operating Instructions BG 5520 BEN for
the IMG 400.
In the presence of halogen gases like fluorine, chlorine, bromine and
iodine and their compounds, the yttrium oxide coating will suffer rapid
wear. As a result of this, the cathodes will burn out.
Caution
Humidity at the insulators (2/14) caused by condensing water for ex-
ample, can give rise to incorrect measurements due to leakage
currents.
Calibration
Operation

BG 5034 BEN (2017-01) IMR420_430.oi 13
5 Maintenance
DANGER
DANGER: contaminated parts
Contaminated parts can be detrimental to health and environment.
Before you begin to work, find out whether any parts are contami-
nated. Adhere to the relevant regulations and take the necessary
precautions when handling contaminated parts.
Caution
Caution: vacuum component
Dirt and damages impair the function of the vacuum component.
When handling vacuum components, take appropriate measures to
ensure cleanliness and prevent damages.
Caution
Caution: dirt sensitive area
Touching the product or parts thereof with bare hands increases the
desorption rate.
Always wear clean, lint-free gloves and use clean tools when working
in this area.
The cathode is supplied on a plate under a cover. The cathode must
only be exchanged in a room which is free of dust. Wearing of clean
gloves is mandatory.
Switch off the operating unit.
Detach the gauge head cable from the gauge head.
Remove the gauge head from the vacuum system.
After loosening the hex screws at both terminals remove the faulty cathode.
Open the transport packaging, remove the replacement cathode in the
same way and install it in the place of the old cathode.
The required 0.89 mm screwdriver is included with the replacement cathode.
5.1 Exchanging the Cathode
Preparation

14 BG 5034 BEN (2017-01) IMR420_430.oi
Fig. 4 View onto the gauge head
The cathode should be positioned as parallel as possible with respect to the
anode. The initially applicable calibration values do not apply any longer after
exchanging the cathode. Deviations up to 15 % may occur.
6 Spare Parts, Accessories
Ordering number
Gauge head cable, 3 m with touch protection PT 548 332 T
Gauge head cable, 5 m with touch protection PT 548 333 T
Gauge head cable, 10 m with touch protection PT 548 334 T
Gauge head cable, 50 m with touch protection PT 548 338 T
Gauge head cable, temperature resistant 200 °C, 3 m with
touch protection PT 548 342 T
Gauge head cable, temperature resistant 200 °C, 5 m with
touch protection PT 548 343 T
Gauge head cable, temperature resistant 200 °C, 10 m with
touch protection PT 548 344 T
Gauge head cable, temperature resistant 200 °C, 50 m with
touch protection PT 548 348 T
When ordering spare parts, always indicate:
all information on the product nameplate
description and ordering number according to the spare parts list
Ordering number
Replacement cathode for IMR 420 PT 120 020 -T
Replacement cathode for IMR 430 PT 120 021 -T
Gauge head cables
Spare parts list

BG 5034 BEN (2017-01) IMR420_430.oi 15
7 Storage
Caution
Caution: vacuum component
Inappropriate storage leads to an increase of the desorption rate
and/or may result in mechanical damage of the product.
Cover the vacuum ports of the product with protective lids or grease
free aluminum foil. Do not exceed the admissible storage temperature
range ( 6).
8 Returning the Product
WARNING
WARNING: forwarding contaminated products
Products returned to Pfeiffer Vacuum for service or repair should, if
possible, be free of harmful substances (e.g. radioactive, toxic, caustic
or microbiological). Otherwise, the type of contamination must be de-
clared.
Adhere to the forwarding regulations of all involved countries and for-
warding companies and enclose a completed contamination declara-
tion (Form under www.pfeiffer-vacuum.com.
Products that are not clearly declared as "free of harmful substances" are de-
contaminated at the expense of the customer.
Products not accompanied by a duly completed declaration of contamination are
returned to the sender at his own expense.

16 BG 5034 BEN (2017-01) IMR420_430.oi
9 Disposal
DANGER
DANGER: contaminated parts
Contaminated parts can be detrimental to health and environment.
Before beginning to work, find out whether any parts are contami-
nated. Adhere to the relevant regulations and take the necessary pre-
cautions when handling contaminated parts.
WARNING
WARNING: substances detrimental to the environment
Products or parts thereof (mechanical and electric components,
operating fluids etc.) can be detrimental to the environment.
Dispose of such substances in accordance with the relevant local
regulations.
After disassembling the product, separate its components according to the
following criteria:
Contaminated components (radioactive, toxic, caustic or biological hazard etc.)
must be decontaminated in accordance with the relevant national regulations,
separated according to their materials, and disposed of.
Such components must be separated according to their materials and recycled.
Separating the components
Contaminated components
Other components

BG 5034 BEN (2017-01) IMR420_430.oi 17
Appendix
mbar Bar Pa hPa kPa Torr
mm HG
mbar 1 1×10-3 100 1 0.1 0.75
Bar 1×103 1 1×105 1×103 100 750
Pa 0.01 1×10-5 1 0.01 1×10-3 7.5×10-3
hPa 1 1×10-3 100 1 0.1 0.75
kPa 10 0.01 1×103 10 1 7.5
Torr
mm HG 1.332 1.332×10-3 133.32 1.3332 0.1332 1
1 Pa = 1 N/m2
[1] www.pfeiffer-vacuum.com
Operating Instructions
Ionization Gauge Controller IMG 400
BG 5520 BEN
Pfeiffer Vacuum GmbH, D35614 Asslar, Deutschland
A: Conversion Table
Pressure units
(vacuum technology)
B: Literature

18
EU
D
Prod
u
Part
n
Stan
d
Manu
f
D
eclarati
u
cts
n
umbers
ards
f
acturer / Si
g
on of C
o
g
natures
o
nformit
y
W
c
o
d
e
u
2
B
I
M
(
o
P
P
P
2
D
G
y
W
e, Pfeiffer V
a
o
mplies with t
e
signed for u
s
lectromagneti
s
e of certain
h
0
11/65/EU.
B
ayard-Alpert
a
M
R 420, IMR
4
o
peration with
P
T T07 359 90
P
T T08 359 90
Harmonize
d
EN 61000-6
(EMC: generic
i
EN 61000-6
(EMC: generic
e
EN 61010-1
(Safety require
m
EN 61326-1
(EMC requirem
e
P
feiffer Vacuu
m
1. April 2016
D
r. Ulrich von
H
G
eschäftsführ
e
a
cuum, hereb
y
t
he provisions
s
e within cert
a
c compatibilit
y
h
azardous su
b
a
nd Extractor
4
30
IMG 400)
0
0
0
0
d
and internati
o
6
-2:2005
i
mmunity standar
d
6
-4:2007 + A1
:
e
mission standar
d
:2010
m
ents for electric
a
:2013
ents for electrical
m
GmbH, Ber
l
H
ülsen
e
r
y
declare that
of the Directi
v
a
in voltage lim
y
2014/30/EU
b
stances in el
e
gauges
o
nal/national
s
d
for industrial en
v
:
2011
d
for industrial en
v
a
l equipment for
m
equipment for m
e
l
iner Str. 43,
D
the equipme
n
v
e relating to
e
its 2014/35/E
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and the Dire
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e
ctrical and el
s
tandards an
d
v
ironments)
v
ironments)
m
easurement, con
e
asurement, cont
r
D
-35614 Assl
a
BG 5034 B
E
n
t mentioned
b
e
lectrical equi
U, the Directi
v
c
tive on the re
l
ectronic equi
p
d
specificatio
n
n
trol and laborato
r
r
ol and laboratory
a
r
E
N (2017-01) IMR420_430
b
elow
pment
v
e relating to
s
triction of th
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ment
s:
y
use)
use)
.oi
e

BG 5034 BEN (2017-01) IMR420_430.oi 19
Notes

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