Bruker BVT3300 Bedienungsanleitung

BRUKER

Version

Variable Temperature

Unit

Technical Manual

BVT3300

003

The information in this manual may be altered without notice.

BRUKER accepts no responsibility for actions taken as a result

of use of this manual. BRUKER accepts no liability for any mis-

takes contained in the manual, leading to coincidental damage,

whether during installation or operation of the instrument. Un-

authorised reproduction of manual contents, without written

permission from the publishers, or translation into another lan-

guage, either in full or in part, is forbidden.

This manual was written by

P. KRENCKER and D. PODADERA

Wissembourg, France

Manual P/N: Z31349

DWG-Nr: 1058 / 003

BVT3300 Version 003 BRUKER 3 (67)

Contents

Contents ............................................................... 3

Index ..................................................................... 5

1 Description ............................................................. 7

1.1 Introduction ......................................................................... 7

1.2 BVT3300 main components ................................................. 8

1.3 Parts location ...................................................................... 9

1.4 Principle of operation ........................................................... 9

1.5 The front panel .................................................................. 10

1.6 Gas flow circuit .................................................................. 11

Setting up the gas flow ..................................................12

1.7 Front panel connectors ...................................................... 13

Heater connector ...........................................................13

Pt100 connector ............................................................14

Thermocouple connector ...............................................15

RS232 connector ...........................................................16

N2 connector (option) ....................................................17

BCU05 connector ..........................................................17

BVTB 3500 connector ....................................................18

2 Options ................................................................. 19

2.1 Auxiliary sensor option - BASM .......................................... 19

2.2 Manual Command Module - BMCM .................................... 20

2.3 Low temperature options ................................................... 20

2.4 LN2 exchanger .................................................................. 21

Exchanger presentation .................................................21

2.5 LN2 evaporator .................................................................. 22

Evaporator presentation .................................................22

2.6 BCU05 gas cooler ............................................................. 23

3 Configuration........................................................ 25

3.1 Sensor selection ................................................................ 25

3.2 Eurotherm 847 configuration .............................................. 25

4 Remote interface control...................................... 27

4.1 Microcontroller interface .................................................... 27

4.2 Digital interface specifications ........................................... 27

4.3 Commands and communication protocol ............................ 28

4.4 Control characters ............................................................. 28

4.5 List of commands .............................................................. 29

4.6 Rs232 link characteristics .................................................. 30

4 (67) BRUKER BVT3300 Version 003

4.7 Rs232 cable ...................................................................... 30

4.8 Authorised functions .......................................................... 30

AF (Air flow) ..................................................................32

CM (Check memory for test only) ..................................33

CO (Communications speed) .........................................34

DL (Download) ..............................................................35

DT (DAC check for test only) .........................................36

ES (Error status) ...........................................................37

HP (Heater power) ........................................................38

IS (Interface status) .......................................................39

NH (Nitrogen heater) .....................................................40

NP (Nitrogen heater power) ...........................................41

P1 (Port 1 for test only) .................................................42

P2 (Port 2 for test only) .................................................43

P3 (Port 3 for test only) .................................................44

P4 (Port 4 for test only) .................................................45

RB (Read BBIS) ............................................................46

SV (Software version) ....................................................47

WB (Write BBIS) ...........................................................48

WR (Write record) .........................................................49

XR (Extract a record) .....................................................50

5 Technical specifications........................................51

5.1 Specifications ................................................................... 51

5.2 Security fuses ................................................................... 52

6 Schematics ............................................................53

Figures ................................................................. 63

Tables ................................................................... 65

BVT3300 Version 003 BRUKER 5 (67)

Index

BBIS eeprom....................................................................................................... 28

BCU05 connector................................................................................................ 17

BCU05 gas cooler......................................................................................... 20, 23

BTO2000................................................................................................. 10, 14, 25

BVTB 3500 connector......................................................................................... 18

CJC selection...................................................................................................... 26

digital interface specification............................................................................... 27

evaporator........................................................................................................... 17

exchanger ........................................................................................................... 17

front panel connectors......................................................................................... 13

fuses.................................................................................................................... 52

Gas flow indicator................................................................................................ 10

Heater connector................................................................................................. 13

LN2 evaporator ................................................................................................... 20

Low temperature................................................................................................. 20

N2 connector....................................................................................................... 17

6 (67) BRUKER BVT3300 Version 003

Pt100 connector..................................................................................................14

remote interface control ...................................................................................... 27

RS232 connector ................................................................................................ 16

Sensor selection.................................................................................................. 25

Temperature controller..........................................................................................7

Thermocouple connector ....................................................................................15

thermocouple T.....................................................................................................9

BVT3300 Version 003 BRUKER 7 (67)

Description 1

Introduction 1.1

0The new variable temperature unit BVT3300 for sample temperature regulation is

equipped with a microcontroller interface for remote control by the host computer.

The BVT3300 is manufactured in a separate housing.

The unit includes:

- A main board called interface board with a microcontroller.

- A temperature controller (EUROTHERM model 847).

- A main transformer that supplies the microcontroller and its electronics and the

optoisolated power stage of the probe heater.

- The gas flow circuitry (pressure regulator and a block of four valves for gas flow

control).

- An option printed circuit for LN2 heater evaporator control or LN2 exchanger.

8 (67) BRUKER BVT3300 Version 003

Description

Figure 1.1. BVT3300 block diagram

BVT3300 main components 1.2

The interface board has a microcontroller for remote control of the BVT3300. Two

RS232 links are available on this printed circuit. One link, on the front panel side,

is for the communication with host computer and the other for communication with

the Eurotherm 847 temperature controller.

A main toric transformer supplies the different groups. At rear, there is a power

supply plug. The thyristor bridge, for heater power control, is placed on the hous-

ing at rear side. On the front, a gas flow indicator with a steel ball detects the gas

flow. A device, called valve block, is a group of valves which determines the gas

flow under software control.

thermocouple

and Pt100

connector

RS232

Host computer

connector

probe heater

connector BCU05

connector Gas

inlet outlet

Gas N2

option board for

LN2 evaporator

or exchanger

main

transformer

ac line

filter

Eurotherm

controller

microcontroller POWER

CONTROL

& SECURITIES

OPTO-

COUPLERS

RAM

EPROM RS232

BUFF VALVE

BLOCK GAS FLOW

DETECTION

PRESSURE

REGULATOR FLOW

INDICATOR

BVT3300 Version 003 BRUKER 9 (67)

Parts location

Parts location 1.3

Figure 1.2. Parts location

Principle of operation 1.4

The sample tube placed in the magnet of the spectrometer is heated by a con-

stant gas flow delivered by the BVT3300. A temperature sensor (e.g. a thermo-

couple T) located under the sample tube measures the gas temperature. The

temperature controller compares the probe temperature to the target temperature

programmed by the operator. It controls the power applied to the heater placed at

the base of the magnet in order to stabilise the gas temperature. A special detec-

tor monitors the gas flow and switch off the heater power if there is no gas flow. A

security thermocouple checks also the heater temperature and avoids probe over-

heating.

main transformer

heater filter coil

thyristor bridge

mains plug

line switch gas flow indicator

main board

valve

block

pressure regulator

TEMPERATURE

CONTROLLER

OPTION

LN2

EVAPORATOR

EXCHANGER

10 (67) BRUKER BVT3300 Version 003

Description

The front panel 1.5

On the front panel, there is :

1: Auxiliary sensors

2: Gas out

3: Gas inlet

4: Pt100 connector or BTO2000

5: Power switch

6: RS232 connector

7: Heater connector

8: BCU05 connector

9: N2 connector

10: Gas flow indicator

11: BTO2000 power supply or BVTB 3500

12: Thermocouple connector type T

13: Eurotherm controller

Figure 1.3. BVT3300 front panel

BVT3300

BRUKER

HEATER BCU05

POWER

578

EUROTHERM

RM A/M PAR

OP1

OP2

847

GAS OUT GAS IN

BTO P.S.

BVTB3500

PT100 SENSOR

10 11 12 139

AUXILIARY SENSORS

DIGITAL

GAS FLOW

RS232

3 41

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