Inficon BPG400, BPG400-SP, BPG400-SD, BPG400-SR Instruction Sheet

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Bayard-Alpert Pirani Gauge

BPG400
BPG400-SD
BPG400-SP
BPG400-SR

Product Identification

In all communications with INFICON, please specify the in­formation given on the product nameplate. For convenient
reference copy that information into the space provided
below.

Validity

This document applies to products with the following part
numbers (PN):

BPG400 (

without display)

353-500
353-502

BPG400

(with display)

353-501
353-503

BPG400-SD (with DeviceNet interface and switching functions)

353-507
353-508

BPG400-SP

353-505
353-506

BPG400-SR (with RS485 interface and switching functions)

353-509
353-513

The part number (PN) can be taken from the product name
plate.

If not indicated otherwise in the legends, the illustrations in
this document correspond to the gauge with part number
353-500. They apply to the other gauges by analogy.

We reserve the right to make technical changes without prior
notice.

All dimensions in mm.

Intended Use

The BPG400, BPG400-SD, BPG400-SP and BPG400-SR
gauges have been designed for vacuum measurement of
gases in the pressure range of 5×10

They must not be used for measuring flammable or combusti­ble gases in mixtures containing oxidants (e.g. atmospheric
oxygen) within the explosion range.

The gauges can be operated in connection with the VGC103
or VGC40x Vacuum Gauge Controller or with another in­strument or control device.

RS485

Instruction Sheet

Incl. EC Declaration of Conformity

tima03e1-c (2010-04)

INFICON AG, LI-9496 Balzers

Model:
PN:
SN:
V W

(DN 25 ISO-KF)
(DN 40 CF-R)

(DN 25 ISO-KF)
(DN 40 CF-R)

(DN 25 ISO-KF)
(DN 40 CF-R)

(with Profibus interface and switching functions)
(DN 25 ISO-KF)

(DN 40 CF-R)

(DN 25 ISO-KF)
(DN 40 CF-R)

-10

… 1000 mbar.

Functional Principle

Over the whole measuring range, the gauge has a
continuous characteristic curve and its measuring signal is
output as logarithm of the pressure.

The gauge functions with a Bayard-Alpert hot cathode ioni­zation measurement system (for p < 2.0×10
Pirani measurement system (for p > 5.5×10
overlapping pressure range of 2.0×10
mixed signal of the two measurement systems is output. The
hot cathode is switched on by the Pirani measurement sys­tem only below the switching threshold of 2.4×10
prevent filament burn-out). It is switched off when the pres­sure exceeds 3.2×10

-2

mbar.

-2

mbar) and a

-3

mbar). In the

-2

… 5.5×10-3 mbar, a

-2

Trademark

DeviceNet™ Open DeviceNet Vendor Association, Inc.

Safety

Symbols Used

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.

Personnel Qualifications

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 by
the end-user of the product.

General Safety Instructions

• Adhere to the applicable regulations and take the ne­cessary precautions for the process media used.

Consider possible reactions with the product materials.
Consider possible reactions (e.g. explosion) of the process

media due to the heat generated by the product.

• 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 contaminated. Adhere to the relevant
regulations and take the necessary precautions when
handling contaminated parts.

Communicate the safety instructions to all other users.

Liability and Warranty

INFICON assumes no liability and the warranty becomes 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 changes (modifications, alterations etc.)

to the product

• use the product with accessories not listed in the product
documentation.

The end-user assumes the responsibility in conjunction with
the process media used.

Gauge failures due to contamination or wear and tear, as well
as expendable parts (filament), are not covered by the
warranty.

mbar (to

Technical Data

In some points, the technical data of BPG400-SD,

BPG400-SP and BPG400-SR differ from those of
BPG400, which are given below (→ "Technical
Data" in  [1] and [2]).

Measuring range

(air, O

, CO, N2)

2

Accuracy 15% of reading in the range

Repeatability 5% of reading in the range of

Emission

Switching on threshold
Switching off threshold

Emission current

p ≤ 7.2×10

7.2×10
< 3.2×10

Emission current switching

25 µA ⇒ 5 mA
5 mA ⇒ 25 µA

Degas

Current (p <7.2×10

-6

mbar

-6

mbar < p

-2

mbar

-6

Control input signal 0 V/24 V, high active
Duration <3 min, followed by

In degas mode, the BPG400 keeps supplying pressure
readings, the tolerances of which can be higher than
during normal operation.

Output signal
(measuring signal)

Measuring range 0.774 … 10 V

Voltage vs. pressure logarithmic,

Error signal (→  [1]) ≈0.3 V (hot cathode error)

Minimum load impedance

Gauge identification

RS232C interface

Data rate
Data format

Connector

Further information on the RS232C interface →  [1]

Display panel (353-501,
353-503)

Dimensions 16.0 mm × 11.2 mm
Pressure units mbar (default),

Supply

DANGER

The gauge must only be connected to power
supplies, instruments or control devices that
conform to the requirements of a grounded pro­tective extra-low voltage (SELV). The connection
to the gauge has to be fused

Voltage at gauge 24 VDC (20 … 28 VDC)

Power consumption

Standard
Degas
Emissions start (200 ms)

Fuse required

1)

≤1.25 AT

Power consumption ≤16 W

1)

INFICON controllers fulfill these requirements.

2)

Consider the voltage drop on the sensor cable.

-10

5×10

… 1000 mbar

continuous

of 1×10
(after 5 min. stabilization)

-8

1×10

… 10-2 mbar

(after 5 min. stabilization)

-2

2.4×10

-2

3.2×10

5 mA

25 µA

-6

7.2×10

-5

3.2×10

mbar)

≈16 mA (P

automatic stop

0 … +10 V

-10

(5×10

0.75 V/decade

≈0.5 V (Pirani error)

10 kΩ

42 kΩ between Pin 10 and
Pin 5 (gauge cable)

9600 Baud
binary
8 data bits
one stop bit
no parity bit
no handshake
→ "Power Connection"

LCD matrix, 32×16 pixels,
with background illumination

Torr, Pa (Selecting the
pressure unit →  [1])

(ripple ≤2 V

≤0.5 A
≤0.8 A
≤1.4 A

-8

… 10-2 mbar

mbar
mbar

mbar
mbar

≈4.0 W)

degas

… 1000 mbar)

1)

.

) 2)

pp

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Electrical connection D-Sub, 15-pin, male
Sensor cable

For analog values only,
without degas function

For analog values,
with degas function

All functions,
incl. RS232C interface

Cable length (24 VDC) ≤35 m (4/5/7x0.25 mm²)

For operation with RS232C
interface

Materials on the vacuum side

Housing, supports,
screens
Feedthroughs
Insulator
Cathode
Cathode holder
Pirani element

Internal volume

DN 25 ISO-KF
DN 40 CF-R

Maximum admissable
Pressure

Admissible temperatures

Storage
Operation
Bakeout

Relative humidity

Year’s mean
During 60 days

Use indoors only

4 conductors, shielded

5 conductors, shielded

7 conductors, shielded

≤50 m (4/5/7x0.34 mm²)
≤100 m (4/5/7x1.0 mm²)

≤30 m

stainless steel
NiFe nickel plated
glass
iridium, yttrium oxide (Y
molybdenum
tungsten, copper

3

≈24 cm
≈34 cm3

2 bar (absolute)

2O3)

–20 … +70 °C
0 … +50 °C
150 °C (without electronics

unit)

≤65% (not condensable)
≤85% (not condensable)

altitude up to 2000 m NN

where p pressure

Gas Type Dependence

For gases other than air, the pressure in the indication range
p < 10

Gas
type

He
Ne

Kr
Ar

Installation

Vacuum Connection

Type of protection IP 30

Dimensions [mm]

4-40UNC 2B

Weight

353-500, 353-501
353-502, 353-503
353-505, 353-507
353-509
353-506, 353-508
353-513

Measuring Signal vs. Pressure

Pressure p [mbar]

1E+04

1E+03

1E+02

1E+01

1E+00

1E–01

1E–02

1E–03

1E–04

1E–05

1E–06

1E–07

1E–08

1E–09

1E–10

0.0

DN 25 ISO-KF DN 40 CF-R

≈285 g
≈550 g

≈430 g

≈695 g

underrange

Sensor error

1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0

Measuring signal U[V]

4-40UNC 2B

overrange

(U-7.75)/0.75+c

p = 10

U p c

[V] [mbar] 0
[V] [Pa] 2
[V] [Torr] -0.125

U measuring signal
c constant (pressure unit dependent)

-3

mbar can be determined by a simple conversion:

p

= C × pressure indicated

eff

Calibration

factor C

5.9

4.1

0.5

0.8

Gas type Calibration

factor C

air, O2, CO, N

H2

Xe

2

DANGER

DANGER: overpressure in the vacuum system
>1 bar

Injury caused by released parts and harm
caused by escaping process gases can result if
clamps are opened while the vacuum system is
pressurized.

Do not open any clamps while the vacuum sys­tem is pressurized. Use the type clamps which
are suited to overpressure.

DANGER

DANGER: protective ground
Incorrectly grounded products can be extremely

hazardous in the event of a fault.
The gauge must be electrically connected to the

grounded vacuum chamber. This connection
must conform to the requirements of a protective
connection according to EN 61010:

• CF connection fulfill this requirement

• For gauges with a KF flange, use a conduc-

tive metallic clamping ring

Caution

Caution: vacuum component
Dirt and damages impair the function of the

vacuum component.
When handling vacuum components, take ap-

propriate 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.

1.0

2.4

0.4

The gauge may be mounted in any orientation. To

keep condensates and particles from getting into the
measuring chamber, preferably choose a horizontal
to upright position.

The gauge is supplied with a built-in grid. For poten­tially contaminating applications and to protect the
electrodes against light and fast particles, installation
of the optional baffle is recommended (

Remove the protective lid and install the product to the
vacuum system, preferably without applying vacuum grease.

Seal with centering ring

or

Protective lid

Seal with centering

Power Connection (BPG400)

Clamp

Keep the protective lid.

The following information on the electrical con-

nection as well as the wiring diagram applies to
BPG400 only (
electrical connection and additional functions of
BPG400-SD, -SP and -SR).

Make sure the vacuum connection is properly made

(→ "Vacuum Connection").

ring and filter

→  [1] and [2] for details on the

 If no connection cable is available, make one according

to the following diagram.

BPG400

TxD

RxD

Measuring

signal

13

14

2

12

Degas

+U

7

1.25AT

8

b

5

42kΩ

10

Identification

15

Electrical connection
Pin 2 Signal output (measuring signal) 0 … +10 V

Pin 5 Supply common, GND
Pin 7 Degas on, active high +24 VDC
Pin 8 Supply +24 VDC
Pin 10 Gauge identification
Pin 12 Signal common, GND
Pin 13 RS232C, TxD
Pin 14 RS232C, RxD
Pin 15 Shielding, housing, GND

Pins 1, 3, 4, 6, 9 and 11 are
not connected internally.

→  [1]).

RS232C

+

+

24 V

–

9

15

D-Sub, 15-pin

female,

soldering side

1

8

Original: German tima03d1-c (2010-04)

tima03e1-c

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(2010-04)

 Connect the sensor cable to the gauge.

 Secure the cable connector with the lock screws.
 Connect the sensor cable to the controller.

Operation

When the voltage is supplied, the measuring signal is avail­able between pins 2 (+) and 12 (–) (Relationship Measuring
Signal – Pressure

BPG400-SD, -SP and -SR can also be operated via the
corresponding fieldbus interface (DeviceNet, Profibus or

→  [1] and [2] for further details and functions).

RS485

Allow for a stabilizing time of
has been switched on, permanently leave it on irrespective of
the pressure.

Gas Type Dependence (BPG400)

The measurement value is gas dependent. The displayed
reading applies to dry air, O
has to be converted (→ "Technical Data" and  [1]).

Adjusting the Gauge

The adjustment of BPG400-SD, -SP and -SR

The gauge is factory calibrated. If used under different
climatic conditions, at extreme temperatures, through aging
or contamination and after exchanging the sensor, the char­acteristic curve can be offset and readjustment can become
necessary. Only the Pirani element can be adjusted and only
at atmosphere.

Readjustment becomes necessary if

• at atmosphere the output voltage is <10 V or the display

reading is <atmosphere

• when venting the vacuum system, the output voltage

reaches 10 V before the measured pressure has reached
atmosphere (Gauges with display will show the error "5" at
atmosphere (Pirani sensor warning)).

→ "Technical Data" and  [1]).

≈10 minutes. Once the gauge

, CO, and N2. For other gases, it

2

(→  [1] and [2]) is slightly different from the
procedure for BPG400, which is described below.

 Adjusting the gauge

BPG400 without display

353-500 353-502

Insert a pin (≈ø1.3×50mm) through the opening marked

<FULL SCALE> and push the button inside for at least

≈10 s

Adjustment completed

BPG400 with display

353-501 353-503

5 seconds.

Automatic adjustment

Display

(BPG400 with part numbers 353-501 and 353-503)

Pressure reading

(none) Pirani operation

Emission 25
Emission 5 mA
Degas
1000 mbar adjustment (Pirani)

μ

Pressure unit

Function display

A

Internal data connection failure
(red background illumination)

Deinstallation

DANGER

DANGER: contaminated parts
Contaminated parts can be detrimental to health

and environment.
Before beginning to work, find out whether any

parts are contaminated. 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 vac-

uum component.
When handling vacuum components, take ap-

 Vent the vacuum system.

 Put the gauge out off operation.

propriate 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.

 Unfasten the lock screws and unplug the sensor cable.

(If you are using BPG400-SD, -SP or -SR, unfasten
and unplug the interface cable too (

→  [1] and [2]).

 Activate the gauge.

Operate the gauge for ≈10 minutes at atmos-

pheric pressure. If the gauge was operated
within the BA range, a cooling-down time of

≈30 minutes is to be expected (gauge tem-

perature = environmental temperature).

no error

(green background illumination)

Pirani sensor warning

(red background illumination)

Pirani sensor error

(red background illumination)

BA sensor error

(red background illumination)

Error display

 Remove the gauge from the vacuum system.

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Protective lid

Maintenance, Troubleshooting

In case of severe contamination or a malfunction, the sensor
can be replaced (

Gauge failures due to contamination or wear and

→  [1]).

tear, as well as expendable parts (filament), are not
covered by the warranty.

Returning the Product

WARNING

WARNING: forwarding contaminated products
Contaminated products (e.g. radioactive, toxic,

caustic or microbiological hazard) can be detri­mental to health and environment.

Products returned to INFICON should preferably
be free of harmful substances. Adhere to the for­warding regulations of all involved countries and
forwarding companies and enclose a duly com­pleted declaration of contamination

Products that are not clearly declared as "free of harmful
substances" are decontaminated 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.

Disposal

DANGER

DANGER: contaminated parts
Contaminated parts can be detrimental to health

and environment.
Before beginning to work, find out whether any

parts are contaminated. Adhere to the relevant
regulations and take the necessary precautions
when handling contaminated parts.

WARNING

N

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.

Separating the components

After disassembling the product, separate its components
according to the following criteria:

• Contaminated components

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 recycled.

• Other components

Such components must be separated according to their
materials and recycled.

Further Information

 [1] www.inficon.com

Operating Manual
Bayard-Alpert Pirani Gauge BPG400, BPG400-SD,
BPG400-SP, BPG400-SR
tina03d1 (German)
tina03e1 (English)
INFICON AG, LI–9496 Balzers, Liechtenstein

 [2] www.inficon.com

Instruction Sheet
Bayard-Alpert Pirani Gauge BPG400-SD,
BPG400-SP, BPG400-SR
tima36d1 (German)
tima36e1 (English)
INFICON AG, LI–9496 Balzers, Liechtenstein

Declaration of Contamination

The service, repair, and/or disposal of vacuum equipment and com­ponents will only be carried out if a correctly completed declaration
has b een submitted. N on-completion will result in delay.
This declaration may only be completed (in block letters) and signed
by authorized and qualified staff.

Description of product

Type
Part number
Serial number

Reason for return

Operating fluid(s) u sed

(Must be drained before shipping.)

Used in copper process

no  yes 

Process related contamination of product:

toxic no  1) ye s 
corrosive no  1) yes 
biolog ical ha zard no  ye s  2)
explosive no  ye s  2)
radioactive no  yes  2)
other harmful substances no  1) yes 

1) or not containing any
amount of hazardous
residues that exceed the
permissible exposure limits

The product is free
of any substances
which are damaging
to health.

Harmful substances, gases and/or

by-products

Please list all substances, gases, and by-products
which the product may have come into contact with:

Trade/product name
manufacturer

Precautions associated with
substance

Legally binding declaration:

We he reby declare tha t the information o n this form is
comp lete and a ccurate and tha t we will assume any further
costs that may arise. Th e contaminated product will be dis­patched in accordance with the applicable regulations.

Organization/company

Address

Post code, place

Phone Fax

Email

Name

Company stamp

This form can be downloaded from our website.
Copies: Original for addressee
1 copy for accompanying documents

1 copy for file of sender

yes 

Seal product in plastic
bag and mark it with a
corresponding label.

2) Products thus
contaminate d
will not be
accepted with­ out written
evidence of
decontami ­ n ation.

Chemical name
(or sy mbol)

Action if human
contact

EC Declaration of Conformity

We, INFICON, hereby declare that the equip­ment mentioned below complies with the pro­visions of the Directive relating to electromag­netic compatibility 2004/108/EC.

Products

Bayard-Alpert Pirani Gauge

BPG400
BPG400-SD
BPG400-SP
BPG400-SR

Standards

Harmonized and international/national standards and specifi­cations:

• EN 61000-6-2:2005 (EMC: generic emission standard)

• EN 61000-6-3:2007 (EMC: generic imm unity standard)

• EN 61010-1:2001 (Safety requirements for electrical equip-

ment for measurement, control and laboratory use)

• EN 61326-1:2006 (EMC requirements for electrical equip-

ment for measurement, control and laboratory use)

Manufacturer / Signatures

INFICON AG, Alte Landstrasse 6, LI-9496 Balzers

12 April 2010 12 April 2010

Dr. Urs Wälchli
Managing Director

Claudio Christoffel
Product Manager

LI–9496 Balzers
Liechtenstein
Tel +423 / 388 3111
Fax +423 / 388 3700
[e-mail]

www.inficon.com

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Artisan Technology Group is your source for quality

new and certied-used/pre-owned equipment

• FAST SHIPPING AND

DELIVERY

• TENS OF THOUSANDS OF
IN-STOCK ITEMS

• EQUIPMENT DEMOS

• HUNDREDS OF
MANUFACTURERS

SUPPORTED

• LEASING/MONTHLY
RENTALS

• ITAR CERTIFIED
SECURE ASSET SOLUTIONS

SERVICE CENTER REPAIRS

Experienced engineers and technicians on staff
at our full-service, in-house repair center

Instra

Remotely inspect equipment before purchasing with
our interactive website at www.instraview.com

Contact us: (888) 88-SOURCE | [e-mail] | www.artisantg.com

SM

REMOTE INSPECTION

View

WE BUY USED EQUIPMENT

Sell your excess, underutilized, and idle used equipment
We also offer credit for buy-backs and trade-ins

www.artisantg.com/WeBuyEquipment

LOOKING FOR MORE INFORMATION?

Visit us on the web at www.artisantg.com for more
information on price quotations, drivers, technical

specications, manuals, and documentation