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BMT 932 Manual

Ozone monitor
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BMT MESSTECHNIK GMBH
OZONE MONITOR BMT 932
BM T M ES ST
EC HN I K ,
O ST I, M ON
BE RL IN
TE R EY
BMT MESSTECHNIK GMBH, Berlin, Germany. Tel. +49 - 3329 - 696 77 - 0, fax +49 - 3329 - 696 77 - 29
OSTI Inc., Monterey, California, USA
Manual
Rev. 02/21
BM T ME SST
EC HN IK ,
BE R LI N
OS TI , MO
N TE RE Y
O Z O N E
M O N I T O
R B M T 9 3
2
Tel. +1 - 831 - 649 11 41, fax +1 - 831 - 649 11 51

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  • Page 1 M O N I T O R B M T 9 3 BMT MESSTECHNIK GMBH, Berlin, Germany. Tel. +49 - 3329 - 696 77 - 0, fax +49 - 3329 - 696 77 - 29 OSTI Inc., Monterey, California, USA...

  • Page 2: Table Of Contents

    OZONE MONITOR BMT 932 Manual, Rev. 02/2021 OZONE ANALYZER BMT 932 Contents General Description Features, Options Accessories, Spare Parts Cautions and Warnings Ozone Photometry Units of Measure: ppm , µg/m (1 atm/different temperatures) The OZONE MONITOR BMT 932 Scrubber Mechanical Installation Pneumatic Installation 10.1...
  • Page 3 Appendix R: Relay Box (Option) Appendix U: UBA Certificate This manual describes the standard version of the analyzer. For the Cabinet version BMT 932 C, please refer to the appendix at the end of this manual. It describes the associated differences.

  • Page 4: General Description

    This is the reason why the BMT 932 has two scrubbers (the scrubber is one of the most important elements of an ambient ozone monitor). And it has a built-in ozone generator for intermittent automatic testing the function of the utility scrubber.

  • Page 5: Features, Options

    Low Flow). These logs can be read out and printed via the serial interface with the mentioned software BMT 932 Link. A "Relay Box" built into the OZONE MONITOR BMT 932 is availa- ble to offer electric contacts for each threshold, low and high, of each sample channel, see Ap- pendix R.

  • Page 6: Accessories, Spare Parts

    0,1 ppmv pendant 8 heures. L'ozone est intégralement détruit après avoir passé le BMT 932. Mais comme les conduites de gaz à mesurer peuvent le contenir à forte concentration, il faut veiller à ne pas ouvrir les conduites de gaz à mesurer qui mènent à l'appareil pendant que le générateur d'ozone est en fonction dans le système.

  • Page 7: Ozone Photometry

    OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Les rayons ultra-violets peuvent endommger la vue. ne jamais regarder la lampe sans protection adéquate. Attention : Ce produit se sert de l’équipement de protection de votre installation électrique concernant les sur- charges et les courts-circuits. Vous devez vous assurer que l'intensité de la fusible ou du disjoncteur protégeant le conducteur de phase ne dépasse pas 15 A à...

  • Page 8: Units Of Measure: Ppm , Μg/M (1 Atm/Different Temperatures)

    European Community) is practically identical with 0.5 ppm The OZONE MONITOR BMT 932 The OZONE MONITOR BMT 932 has a cuvette 285 mm in length. The cuvette is an 6.3 mm ID PTFE tube. The tube is mounted inside a thick-walled aluminium tube as the rigid optical bench.
  • Page 9 OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Figure 2...

  • Page 10: Scrubber

    Mechanical Installation The OZONE MONITOR BMT 932 is in a 19'' rack mount enclosure, 132.5 mm high, 300 mm deep (see Figure 3), or in a splash-proof wall mounted aluminium cabinet 357 x 440 x 133 mm.
  • Page 11 & tubings 483 (19") Auto Channel 3: 0.123 ppm O ZO N E M O NI TO R BMT 93 2 BMT M ESSTECHN I K, BERLI N OS TI , MO NTEREY , CA. Figure 3...
  • Page 12 OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Figure 4...

  • Page 13: Pneumatic Installation

    The fittings are bulkhead compression fittings for ¼'' OD (.250" x .156"), or 6 mm OD (6 x 4 mm) tubing. The cabinet version BMT 932C accepts only 1/4" tubing (refer to Appendix C, page 48). Tubing material has to be fluorinated plastic, preferably transparent FEP to make any internal droplets or coarse dirt visible.

  • Page 14: Tubing

    Each user has to find out the interval optimally adapted to his specific situation. Caution: The BMT 932 is designed to measure ozone in ambient air at the workplace. Placing an ozone sample port in a corrosive and/or contaminated environment could cause damage to the instrument and affect the accuracy of measurements.

  • Page 15: Electrical Installation

    11.1 Power Connections The rear panel of the 19" rack mount version of the OZONE MONITOR BMT 932 includes a 3-wire power receptacle. The instrument will work from any mains voltage in the range of 100 to 240 VAC. Power consumption is less than 35 VA. The instrument contains Universal Modular Fuses, which allow global operation without having to make a decision between IEC and UL type fuses.

  • Page 16: Channel Identification

    OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Signal Name Pin No. Description Alarm High Open Pins 4-6 opened when HIGH alarm 4-20 mA (GND) Current loop output return 4-20 mA Current loop output Voltage Outputs (GND) Voltage outputs return Voltage Output 1 V Max.

  • Page 17: Emergency-Off Relays

    Example: three generators with two sample points each have to be monitored by one OZONE MONITOR BMT 932. In the event of an ozone leak in one generator only this generator shall be switched off by the instrument. One logical EMO function is available for each generator, so the...

  • Page 18: Serial Interface

    OZONE MONITOR BMT 932 Manual, Rev. 02/2021 All EMO-Relays are in the open position if no power is applied to the instrument. A relay con- tact will only close if all channels with assigned alarms were sampled and concentrations were found below thresholds.

  • Page 19: Front Panel Operation

    OZONE MONITOR BMT 932 Manual, Rev. 02/2021 change into normal operating mode is displayed and counted down, giving an indication on when warmup will end. The time period between switching on and normal operating mode can last between 40 s and 420 s. During this time the front panel keys are deactivated. Serial communica- tion is possible.
  • Page 20 Starting with Concentration pressing the button SCROLL will lead to View Parameters. After pressing ENTER the parameters can be viewed, but they cannot be changed. The BMT 932 will go on measuring concentrations in all position of the menu system.

  • Page 21: Changing Parameters

    SCROLL button for 2 s, properties can be changed freely. The Windows software BMT 932 Link can be used to change this PIN to any other 4-digit number. If the PIN is differ- ent from 0000, pressing the SCROLL key for 2 s will lead to the display of:...
  • Page 22 OZONE MONITOR BMT 932 Manual, Rev. 02/2021 SCROLL Menu View Parameters ENTER Unit Ozone Alarms RS-232 Time/Date Other Param. Parameters See next Page Time Date Norm. Norm. Temperature Pressure Baudrate Timed/Polled Time Interval High Alarms Low Alarms EMO Settings Select...

  • Page 23: The Menu Set Parameters

    2 seconds. The configuration of the BMT 932 can be changed here. The diagram shows the selectable pa- rameters. In order to change a setting, the ENTER button has to be pressed. Logical variables, as e.g.
  • Page 24 OZONE MONITOR BMT 932 Manual, Rev. 02/2021 This is an example for changing a logical variable: the unit of ozone concentration shall be changed from ppm to µg/m³: Button Display 0.000 ppm View Parameters SCROLL Set Parameters SCROLL (>2 s)

  • Page 25: Unit Ozone

    OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Saving... ENTER Hi:0.520 ppm Set Hi-Threshold BACK BACK Set High Alarms Set Alarms BACK Set Parameters BACK 0.000 ppm BACK On the following pages you can find a detailed description of all configurable parameters. Change of one parameter may lead to the automatic change of other parameters.

  • Page 26: Low-Alarms

    OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Channel 2 3 6 showing on which channel the alarms have occured. In this example Channels 2, 3 and 6 have a High Alarm. If Alarm Beep is activated, there is also an acoustic signal, which may be stopped using the BACK key, if the front panel menu is on its basic level, showing con- centrations.

  • Page 27: Set Emos

    For test purposes the analog outputs can be set to their max. (10 V / 1 V / 20 mA) respectively min. (0 V / 4 mA) values. With the software BMT 932 LINK any voltage and current can be put out.

  • Page 28: Time/Date

    OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Testing Scrubber Please wait After test completion the result is displayed: Testing Scrubber Scrubber is OK If a faulty scrubber was found there will be a Scrubber Alarm. See p. 10 and 34 for a more detailed desripton of scrubber operation.

  • Page 29: Alarm Beep

    Return to normal operation can be achieved by entering this menu item again. Alarm Beep If this item is set to Enabled, the BMT 932 emits an acoustic signal during Low- or High-Alarms. This beeper may be stopped using the BACK button, if the front panel menu is on ist basic level.

  • Page 30: User-Mode

    If Timed/Polled is set to Timed, there is an output every Time Interval seconds (s. configura- tion of the RS-232 on p. 27). In case Polled is set, the BMT 932 expects the input of a question- mark ('?', without CR), to which it responds with a block of data. User mode data output always follows the format in the following example: 26.04.07,13:54:22,0.001ppm,0.000ppm,0.000ppm,0.000ppm,N/A,...

  • Page 31: Link-Mode

    Float: Range –9999999 .. 99999999 (floating point number as e.g. 1.234567, max. 8 charac- ters including the decimal point) It is very important to wait for confirmation from the BMT 932 once a command is sent. Link- Mode is started by sending the following command:...

  • Page 32: Error Handling

    Local regulations may require to set the alarm thresholds to other values. 16 Error Handling The BMT 932 has divers possibilities to recognize errors, to signal them and to early-warn against them. Warnings and errors are displayed on the front panel. Depending on the importance of the error, the Error Relay (pins 14-15-16) as well as the error contact Lamp Low (Pins 12-13) are activated.

  • Page 33: Lamp Low Error

    MESSTECHNIK (s. also Chapter Trouble). Lamp High Warning The Firmware version 1.16 for the OZONE MONITOR BMT 932 introduces the Lamp High Warning as a new Warning in order to warn the user before the unit fails with Lamp High Error.

  • Page 34: Scrubber Error

    (command *86#), and in the Error Log. Bit 12 is used for Lamp High Warning (0x1000, 4096 decimal). The Windows software BMT 932 Link up to V1.21 will run, but will not show the warning. The log from the old software shows "Unknown Error".

  • Page 35: Overrange

    MESSTECHNIK (s. also Chapter Trouble). The Error Relay indicates an error. Low Flow Error The BMT 932 has an internal sample gas flow meter, which is constantly checking the sample gas flow rate. This flow meter is also used by the internal pump controller, which makes sure that the flow rate is always 1 l/min.

  • Page 36: The Software Bmt 932 Link

    Among other features, the software allows:  easy configuration of all parameters of the BMT 932. With a few mouse clicks you can view respectively change e.g. the unit of ozone concentration, alarm parameters, EMO settings, date and time and other parameters, displayed are also serial number, operating hours, etc.
  • Page 37 The Save and Load functions in the main menu under File are used to save configurations of the BMT 932 onto your PC and load it again at a later time. This helps configuring all monitors with the same parameter set in different locations within one project.

  • Page 38: Accessories And Spare Parts

    OZONE MONITOR BMT 932 Manual, Rev. 02/2021 19 Accessories and Spare Parts item part order number Accessories shipped with the instrument: set of filter holders 932-HOLDER box with filter inserts (200 pcs.) 932-INSERTS tweezers for filter inserts 932-TWEEZERS set of mounting fittings for filter holders...

  • Page 39: Trouble Shooting

    In case the BMT 932 has to be sent in for service, please use the following addresses: BMT MESSTECHNIK GmbH Hamburger Strasse 19 D-14532 Stahnsdorf, Germany Tel.

  • Page 40: Maintenance

    When the error message LAMP LOW or SCRUBBER is displayed the UV lamp or the utility scrubber have to be replaced. The BMT 932 rack-mount instrument now has to be withdrawn from the 19" rack after all tubings and cables have been disconnected. The upper shell of the enclosure is held by four screws (black), two on each side.

  • Page 41: Optical System: Disassembling, Cleaning

    Screw it in and push the black Viton tubing on the grey nipple on top of the scrubber capsule. The wall mount cabinet BMT 932C may be opened only after it had been disconnected from the mains power line. The special mains connector may not be disconnected before mains voltage has been interrupted.

  • Page 42: Specifications

    (H x D) 132 x 300 mm (19  rack mount) (W x H x D) 357 x 440 x 133 mm (wall mount BMT 932 C) Weight 9 kg (19" rack mount) less than 7 kg (wall mount BMT 932 C)

  • Page 43: Appendix A: Link-Mode Commands

    The following table describes all available Link-Mode commands. Commands with question- marks retrieve information from the BMT 932. Caution: This set of commands should only be used by programmers who have a good under- standing of the BMT 932 and ozone measurement in general! Meaning PC->932 932->PC...
  • Page 44 OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Meaning PC->932 932->PC Set Low Alarm EMO-Mask 1 *23#byte *23# Assign Low Alarms to logical EMO 1, setting bits 0..5 assign Low Alarms on channels 1..6 to this function Set High Alarm EMO-Mask 1...
  • Page 45 OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Meaning PC->932 932->PC Set Alarm Beep *47#byte *47# 1: On 0: Off Start Scrubbertest *48# *48# Send Error Log (max. 16 Entries) *49# *49#byte1, byte2,byte3, Format: YY,MM,DD,HH,MM,SS,Error byte4,byte5, Error has the same format as described in table on page 30 byte6,word#...
  • Page 46 OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Meaning PC->932 932->PC Set Auto/Manual *76# *76#byte Has the same effect as pressing "ENTER” on the front panel. Changes Auto/Manual mode and goes through active channels in Manual mode. The selected channel is returned. Use command *8# bit 7 to find out if in Auto or Manual mode.
  • Page 47 OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Meaning PC->932 932->PC Last Values Channel 1? *110#byte *110#float float: the last concentration measured on channel 1 Last Values Channel 2? *111#byte *111#float float: the last concentration measured on channel 2 Last Values Channel 3?

  • Page 48: Appendix C: Cabinet Version Bmt 932 C

    Appendix C: Cabinet Version BMT 932 C General Description The OZONE ANALYZER BMT 932 C (cabinet version) is housed in a splash-proof IP 65 (NEMA 4X) cabinet, and functionally identical to the 19" version BMT 932. B M T M ESS...

  • Page 49: C2 Pneumatic Installation

    SMC Corporation. The tubing has to simply be pushed through the according cable feed- through at the right side of the BMT 932 C cabinet. Inside of the cabinet - opposite to the feed- through - the tubing now has to be inserted into the according One-Touch-Fitting (SMC Corp.).

  • Page 50: C4 Operation

    The BMT 932 C can be ordered with the option 932C-HAR. This provides a relay which can switch an alarm horn in case of a High Concentration Alarm. Connection is made through an additional splash-proof feed-through to the two pole connector on the PCB labeled "Horn".

  • Page 51: Appendix R: Relay Box (Option)

    OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Appendix R: Relay Box (Option) The optional Relay Box may be built into the OZONE MONITOR BMT 932 (19" rack mount version only) allowing port identification signals and threshold alarm information for each sample point to be put out via relay contacts.

  • Page 52: Appendix U: Uba Certificate

    OZONE MONITOR BMT 932 Manual, Rev. 02/2021 Appendix U: UBA Certificate...

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