BPG400
BPG400-SD
BPG400-SP

In some points, the technical data of BPG400-SD
and BPG400-SP differ from those of BPG400, which
are given below (→ "Technical Data" in  [1] and[2]).
Measuring range(air, O2, CO, N2)

5×10-10 … 1000 mbar
continuous
15% of reading in the range
of 1×10-8 … 10-2 mbar
(after 5 min. stabilization)
5% of reading in the range of
1×10-8 … 10-2 mbar
(after 5 min. stabilization)

Accuracy

Repeatability

TrademarkDeviceNet™ Open DeviceNet Vendor Association, Inc.

SafetyInstruction Sheet

Symbols UsedIncl. EU Declaration of Conformity

DANGER

tima03e1-e(2016-04)

Information on preventing any kind of physical injury.

Emission
Switching on threshold
Switching off threshold
Emission currentp ≤ 7.2×10-6 mbar
7.2×10-6 mbar < p< 3.2×10-2 mbar
Emission current switching
25 µA  5 mA
5 mA  25 µA

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.

Information on correct handling or use. Disregard can leadto malfunctions or minor equipment damage.

Personnel Qualifications
INFICON AG, LI-9496 Balzers

Model:PN:
SN:
V

All work described in this document may only be carriedout by persons who have suitable technical training andthe necessary experience or who have been instructed by
the end-user of the product.

Output signal(measuring signal)
Measuring range
Voltage vs. pressure

BPG400 (without display)353-500 (DN 25 ISO-KF)
353-502 (DN 40 CF-R)
BPG400 (with display)353-501 (DN 25 ISO-KF)
353-503 (DN 40 CF-R)
BPG400-SD (with DeviceNet interface and switching functions)353-507 (DN 25 ISO-KF)
353-508 (DN 40 CF-R)
BPG400-SP (with Profibus interface and switching functions)353-505 (DN 25 ISO-KF)
353-506 (DN 40 CF-R)
The part number (PN) can be taken from the product nameplate.
If not indicated otherwise in the legends, the illustrations inthis 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 priornotice.
All dimensions in mm.

Intended Use
The BPG400, BPG400-SD and BPG400-SP gauges havebeen designed for vacuum measurement of gases in thepressure range of 5×10-10 … 1000 mbar.
They must not be used for measuring flammable or combustible gases in mixtures containing oxidants (e.g. atmosphericoxygen) 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.

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.

≈0.3 V (hot cathode error)≈0.5 V (Pirani error)

Minimum load impedance

10 kΩ

Gauge identification

42 kΩ between Pin 10 andPin 5 (gauge cable)

RS232C interface
Data rate
Data format

Connector

Display panel (353-501,353-503)
Dimensions
Pressure units

INFICON assumes no liability and the warranty becomes nulland 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 productdocumentation.
The end-user assumes the responsibility in conjunction withthe process media used.
Gauge failures due to contamination or wear and tear, as well
as expendable parts (e.g. filament), are not covered by thewarranty.

LCD matrix, 32×16 pixels,
with background illumination
16.0 mm × 11.2 mm
mbar (default),
Torr, Pa (Selecting thepressure unit →  [1])Supply5 conductors, shielded
7 conductors, shielded≤35 m (4/5/7x0.25 mm²)
≤50 m (4/5/7x0.34 mm²)≤100 m (4/5/7x1.0 mm²)pc

[mbar][Pa][Torr]

02-0.125pressuremeasuring signal
constant (pressure unit dependent)

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

For gases other than air, the pressure in the indication range
p < 10-3 mbar can be determined by a simple conversion:Materials on the vacuum side
Housing, supports,
screens
Feedthroughs
Insulator
CathodeCathode holder
Pirani element

stainless steel
NiFe nickel platedglass
iridium, yttrium oxide (Y2O3)
molybdenum
tungsten, copperInternal volume
DN 25 ISO-KF
DN 40 CF-R

≈24 cm3≈34 cm3

Maximum admissable
Pressure

2 bar (absolute)

Seal with centering ringpeff = C × pressure indicatedGastypeCalibration
factor C

Gas type

Calibration
factor CHeNeKrAr

5.9
4.1
0.5
0.8

air, O2, CO, N2
H2Xe

1.0
2.4
0.4

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

Relative humidity
Year’s mean
During 60 daysUse≤65% (not condensable)≤85% (not condensable)indoors only
altitude up to 2000 m NN
IP 30

Type of protection

Dimensions [mm]4-40UNC 2B

Installation≤0.5 A≤0.8 A≤1.4 A≤1.25 AT
≤16 W

Protective lid
Seal with centeringring and filter

Keep the protective lid.

Vacuum Connection
DANGER

4-40UNC 2B

DANGER: overpressure in the vacuum system>1 barInjury caused by released parts and harmcaused by escaping process gases can result if
clamps are opened while the vacuum system ispressurized.
Do not open any clamps while the vacuum system is pressurized. Use the type clamps which
are suited to overpressure.

Power Connection (BPG400)
The following information on the electrical connection as well as the wiring diagram applies toBPG400 only (→  [1] and [2] for details on theelectrical connection and additional functions ofBPG400-SD and -SP).
Make sure the vacuum connection is properly made(→ "Vacuum Connection").

 If no connection cable is available, make one according
DANGERDANGER: protective ground
Incorrectly grounded products can be extremely
hazardous in the event of a fault.
The gauge must be electrically connected to thegrounded vacuum chamber. This connection
must conform to the requirements of a protective
connection according to EN 61010:
DN 25 ISO-KF
Weight353-500, 353-501
353-502, 353-503
353-505, 353-507
353-506, 353-508

DN 40 CF-R

• CF connection fulfill this requirement• For gauges with a KF flange, use a conductive metallic clamping ring

CautionCaution: vacuum component
Dirt and damages impair the function of thevacuum component.
When handling vacuum components, take appropriate measures to ensure cleanliness andprevent damages.

1E+03

Caution

1E+02
1E+01
1E+00

1E–02
1E–03
1E–04

to the following diagram.
BPG400TxD

13RxD

14Measuring
signal2

RS232C+

12Degas

7+U b

8

1.25AT+
24 V–5≈285 g≈550 g≈430 g≈695 gPressure p [mbar]

24 V(dc) (20 … 28 V(dc))(ripple ≤2 Vpp) 2)

orClamp

Admissible temperatures
StorageOperation
Bakeout

1E–01

Power consumption
StandardDegas
Emissions start (200 ms)
Fuse required 1)
Power consumption

pUcU
[V]
[V]
[V]

The gauge may be mounted in any orientation. To
keep condensates and particles from getting into themeasuring chamber, preferably choose a horizontal
to upright position.
The gauge is supplied with a built-in grid. For potentially contaminating applications and to protect theelectrodes against light and fast particles, installationof the optional baffle is recommended (→  [1]).

1E+04

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 (PELV). The connection
to the gauge has to be fused 1).
Voltage at gauge

where(U-7.75)/0.75+c

Gas Type Dependence≤30 m

Measuring Signal vs. Pressure
DANGER

Liability and Warranty

p = 10

4 conductors, shielded

For operation with RS232Cinterface

Further information on the RS232C interface →  [1]Communicate the safety instructions to all other users.

D-Sub, 15-pin, male

9600 Baudbinary
8 data bits
one stop bit
no parity bit
no handshake→ "Power Connection"• Adhere to the applicable regulations and take the necessary precautions for all work you are going to do andconsider 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 whenhandling contaminated parts.

0 … +10 V
0.774 … 10 V
(5×10-10 … 1000 mbar)
logarithmic,
0.75 V/decade

Error signal (→  [1])ValidityThis document applies to products with the following partnumbers (PN):

7.2×10-6 mbar
3.2×10-5 mbar

≈16 mA (Pdegas ≈4.0 W)
0 V/24 V(dc), high active<3 min, followed byautomatic stop
In degas mode, the BPG400 keeps supplying pressure
readings, the tolerances of which can be higher thanduring normal operation.

Skilled personnel

W

25 µA

Control input signalDuration

Information on preventing extensive equipment and environmental damage.

Caution

5 mA

Degas
Current (p <7.2×10-6 mbar)

WARNING

Product Identification

2.4×10-2 mbar
3.2×10-2 mbar

Electrical connection
Sensor cable
For analog values only,
without degas function
For analog values,
with degas function
All functions,incl. RS232C interface
Cable length (24 V(dc))

overrange

Bayard-Alpert Pirani Gauge

Over the whole measuring range, the gauge has acontinuous characteristic curve and its measuring signal isoutput as logarithm of the pressure.
The gauge functions with a Bayard-Alpert hot cathode ionization measurement system (for p < 2.0×10-2 mbar) and a
Pirani measurement system (for p > 5.5×10-3 mbar). In theoverlapping pressure range of 2.0×10-2 … 5.5×10-3 mbar, amixed 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 2.4×10-2 mbar (toprevent filament burn-out). It is switched off when the pressure exceeds 3.2×10-2 mbar.

Technical Data

Sensor error
underrange

Functional Principle

Caution: dirt sensitive area
Touching the product or parts thereof with barehands increases the desorption rate.
Always wear clean, lint-free gloves and use
clean tools when working in this area.

42kΩ

10Identification

15Electrical connection
Pin 2 Signal output (measuring signal) 0 … +10 V
Pin 5 Supply common, GND
Pin 7 Degas on, active high +24 VDC
19Pin 8 Supply +24 VDC
Pin 10 Gauge identification
Pin 12 Signal common, GNDPin 13 RS232C, TxD
158
Pin 14 RS232C, RxD
Pin 15 Shielding, housing, GND
D-Sub, 15-pin
Pins 1, 3, 4, 6, 9 and 11 arefemale,not connected internally.
soldering side

1E–05
1E–06
1E–07
1E–08
1E–09
1E–10
0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

Measuring signal U[V]1)
2)

INFICON controllers fulfill these requirements.
Consider the voltage drop on the sensor cable.

t i ma 0 3 e 1 - e

Original: German tima03d1-e (2016-04)(2016-04)

 Connect the sensor cable to the gauge.

 Adjusting the gauge

Further Information

BPG400 without display
353-500 353-502

BPG400 with display
353-501 353-503

Insert a pin (≈ø1.3×50mm) through the opening marked<FULL SCALE> and push the button inside for at least
5 seconds.

Maintenance, Troubleshooting

Internal data connection failure(red background illumination)

In case of severe contamination or a malfunction, the sensor
can be replaced (→  [1]).
Gauge failures due to contamination or wear andtear, as well as expendable parts (e.g. filament), arenot covered by the warranty.

EU Declaration of Conformity

 [1] www.inficon.com
Operating Manual
Bayard-Alpert Pirani Gauge BPG400, BPG400-SD,BPG400-SP
tina03d1 (German)
tina03e1 (English)
INFICON AG, LI–9496 Balzers, Liechtenstein [2] www.inficon.com
Instruction Sheet
Bayard-Alpert Pirani Gauge BPG400-SD, BPG400-SP
tima36d1 (German)
tima36e1 (English)
INFICON AG, LI–9496 Balzers, Liechtenstein

We, INFICON, hereby declare that the equipment mentioned below complies with the provisions of the Directive relating to electromagnetic compatibility 2014/30/EU and the Directive on the restriction of the use of certain
hazardous substances in electrical and electronic equipment 2011/65/EU.

Products

Bayard-Alpert Pirani Gauge
BPG400
BPG400-SD
BPG400-SP

Deinstallation
DANGER Secure the cable connector with the lock screws.
 Connect the sensor cable to the controller.
≈10 s

Automatic adjustment

DANGER: contaminated parts
Contaminated parts can be detrimental to healthand 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.

Returning the Product
WARNINGWARNING: forwarding contaminated productsContaminated 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 theforwarding regulations of all involved countries
and forwarding companies and enclose a duly
completed declaration of contamination *).

CautionOperation
When the voltage is supplied, the measuring signal is available between pins 2 (+) and 12 (–) (Relationship Measuring
Signal – Pressure → "Technical Data" and  [1]).

Adjustment completed

BPG400-SD and -SP can also be operated via the corresponding fieldbus interface (DeviceNet or Profibus →  [1]and [2] for further details and functions).
Allow for a stabilizing time of ≈10 minutes. Once the gauge
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, O2, CO, and N2. For other gases, it
has to be converted (→ "Technical Data" and  [1]).

Caution: vacuum component
Dirt and damages impair the function of the vacuum component.
When handling vacuum components, take appropriate measures to ensure cleanliness andprevent damages.

CautionCaution: dirt sensitive area
Touching the product or parts thereof with barehands increases the desorption rate.
Always wear clean, lint-free gloves and use
clean tools when working in this area.

Display*)Form under www.inficon.com

Products that are not clearly declared as "free of harmful
substances" are decontaminated at the expense of thecustomer.
Products not accompanied by a duly completed declaration ofcontamination are returned to the sender at his own expense.

Standards

Harmonized and international/national standards and specifications:• EN 61000-6-2:2005 (EMC: generic emission standard)• EN 61000-6-3:2007 + A1:2011 (EMC: generic immunitystandard)• EN 61010-1:2010 (Safety requirements for electrical equipment for measurement, control and laboratory use)

• EN 61326-1:2013 (EMC requirements for electrical equipment for measurement, control and laboratory use)

Manufacturer / Signatures

INFICON AG, Alte Landstraße 6, LI-9496 Balzers
15 February 201615 February 2016

Dr. Bernhard Andreaus
Director Product Evolution

Marco Kern
Product Manager(BPG400 with part numbers 353-501 and 353-503)

 Vent the vacuum system.

DisposalPressure reading Put the gauge out off operation.

Adjusting the Gauge
Pressure unit

The adjustment of BPG400-SD and -SP (→  [1]and [2]) is slightly different from the procedure forBPG400, which is described below.
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 onlyat atmosphere.
Readjustment becomes necessary if• at atmosphere the output voltage is <10 V or the display
reading is <atmosphereDANGER Unfasten the lock screws and unplug the sensor cable.
(If you are using BPG400-SD or -SP, unfasten andunplug the interface cable too (→  [1] and [2]).

Function display(none) Pirani operation
Emission 25 μA
Emission 5 mADegas
1000 mbar adjustment (Pirani)

WARNINGWARNING: 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 withthe relevant local regulations.

• when venting the vacuum system, the output voltage
reaches 10 V before the measured pressure has reachedatmosphere (Gauges with display will show the error "5" atatmosphere (Pirani sensor warning)).

 Activate the gauge.
Operate the gauge for ≈10 minutes at atmospheric pressure. If the gauge was operated
within the BA range, a cooling-down time of≈30 minutes is to be expected (gauge temperature = environmental temperature).

DANGER: contaminated parts
Contaminated parts can be detrimental to healthand 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.

Error display

no error(green background illumination)
Pirani sensor warning(red background illumination)
Pirani sensor error(red background illumination)

Separating the components

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

 Remove the gauge from the vacuum system.

• Contaminated components
Contaminated components (radioactive, toxic, caustic, orbiological 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 theirmaterials and recycled.

BA sensor error(red background illumination)
Protective lid

LI–9496 Balzers
LiechtensteinTel +423 / 388 3111
Fax +423 / 388 3700
reachus@inficon.com
www.inficon.com