Bionics Instrument K-I, KII, K-III, K-IV, K-V User Manual

...

Manual for Calibration Kits & Materials

Calibration Kit K-D

Calibration Kit K-S

Calibration materials

K-I, KII, K-III, K-IV, K-V, K-VI, K-VII, K-VIII, K-XI

Version 1.00

(November 2008)

Bionics Instrument i

Legal Notice

No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system or translated into any human or computer language, in any way, electronically, mechanically, by print, photoprint, microfilm or any other way without the express written permission of Bionics Instrument Europe B.V., Maxwellstraat 7, 1704 SG Heerhugowaard, The Netherlands.

We have done our best to ensure that the material found in this publication is both useful and accurate. However, please be aware that errors may exist in this publication, and that neither the authors nor Bionics Instrument Europe B.V. make any guarantees concerning the accuracy of the information found here and neither the authors nor Bionics Instrument Europe B.V. accepts any responsibilities in the use to which it may be put.

Information in this manual may be subject to change without prior notice and does not represent a commitment on the part of the vendor.

Bionics Instrument ii

Contents

1. Introduction ....................................................................................................................... 2

1.1 Safety ............................................................................................................................ 2

1.2 Calibration Kits............................................................................................................... 3

1.3 Calibration materials ...................................................................................................... 4

1.4 Calibration mixtures form cylinders ................................................................................ 5

1.4.1. Performance of calibration gas mixtures from a cylinder ........................................................ 5

2. Components - a general description................................................................................ 6

2.1 Explanation of the tools and connections ....................................................................... 6

2.2 Operation of the mini pump for the calibration of diffusion type detectors....................... 6

2.3 Use of the flow cap for the calibration of diffusion type detectors ................................... 7

2.4 Applying a calibration mixture to a diffusion type detector .............................................. 8

3. Preparing a calibration gas mixtures – Tedlar bag ......................................................... 9

3.1 Preparing gas mixtures with the calibration materials..................................................... 9

3.2.1 Preparing a Phosphine (PH3) gas mixture with kit K-I............................................................ 10

3.2.2 Determining the Phosphine (PH3) concentration with kit K-I .................................................. 11

3.3.1 Preparing a Chlorine (Cl2) gas mixture with kit K-II................................................................ 13

3.3.2 Determining the Chlorine (Cl2) concentration with kit K-II ...................................................... 14

3.4.1 Preparing a Hydrogen Cyanide (HCN) gas mixture with kit K-III ........................................... 17

3.4.2 Determining the Hydrogen Cyanide (HCN) concentration with kit K-III ................................. 18

3.5.1 Preparing a Sulphur Dioxide (SO2) gas mixture with kit K-IV................................................. 20

3.5.2 Determining the Sulphur Dioxide (SO2) concentration with kit K-IV....................................... 21

3.6.1 Preparing a Hydrogen Sulphide (H2S) gas mixture with kit K-V............................................. 24

3.6.2 Determining the Hydrogen Sulphide (H2S) concentration with kit K-V ................................... 25

3.7.1 Preparing a Ammonia (NH3) gas mixture with kit K-VI ........................................................... 28

3.7.2 Determining the Ammonia (NH3) concentration with kit K-VI ................................................. 29

3.8.1 Preparing a Hydrogen Chloride (HCL) gas mixture with kit K-VII .......................................... 31

3.8.2 Determining the Hydrogen Chloride (HCL) concentration with kit K-VII ................................ 32

3.9.1 Preparing a Hydrogen Fluoride (HF) gas mixture with kit K-VIII ............................................ 34

3.9.2 Determining the Hydrogen Fluoride (HF) concentration with kit K-VIII .................................. 35

3.10.1 Preparing a Nitrogen Dioxide (NO2) gas mixture with kit K-XI ............................................. 37

3.10.2 Determining the Nitrogen Dioxide (NO2) concentration with kit K-XI ................................... 38

Appendices.......................................................................................................................... 40

Appendix 1:........................................................................................................................ 41

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Bionics Instrument 1

1. Introduction

1.1 Safety

The calibration kits and calibration materials are intended for the calibration of gas detectors and may not be used for other purposes.

We recommend you to take the following precautions when preparing calibration mixtures and performing calibrations.

If you have any doubt with regard to the procedures, please contact one of the Bionics Instrument offices1

1) For Bionics Instrument offices see Appendix 1

However nearly all gas concentrations used for the calibration are safe, inhalation of these mixtures should be avoided. Ensure that during calibration the gases are always vented to a safe location!

 Wear protective gear – gloves and glasses.  Work in well-ventilated areas.  Never use larger amounts of chemicals that described in this manual.  Read this manual carefully before starting.  Be sure to file this manual for future reference.

Bionics Instrument 2

1. Introduction

1.2 Calibration Kits

There are two types of calibration kits from Bionics Instrument. Kit K-S intended for the calibration of suction type detectors and kit K-D intended for both diffusion and suction type detectors.

The Kit K-S (for suction type detectors) consists of the following components:

1. Kitagawa sampling pump

2. Double bellows

3. PTFE tube

4. Silicon tube

The Kit K-D (for diffusion and suction type detectors) consists of the following components:

1. Kitagawa sampling pump

2. Double bellows

3. PTFE tube

4. Silicon tube

5. Mini pump

6. Flow cap

All calibration kits should be used in combination with the gas specific calibration materials, sets K-I till K-XI, which are described on the next page.

Bionics Instrument 3

1. Introduction

1.3 Calibration materials

To select the right calibration materials for the calibration of a gas sensor you should know the TG-number (code of Bionics Instrument), which is related to your gas sensor.

Bionics instrument uses a system of categorizing its detectors towards TG-numbers. The TG- number (Toxic gas number) is a ‘100’ number, which is assigned to a gas or group of gases. For example Bionics Instrument has assigned TG-2400 to ammonia and a gas sensor (GS) for ammonia is for example the GS2460HT.

Look at general documentation of Bionics Instrument to find the TG-number of your gas sensor(s).

The table bellow indicates the calibration materials (K-number) to use when calibrating a specific sensor.

TG-code

of system to be calibrated

Set – calibration mat. K-I K-II K-Ill K-IV K-V K-Vl K-Vll K-Vlll K-Xl

Gas to Generate PH

Gas generation tube 10

pcs.

Gas generation liquid 10 ml 1 btl. - 1 btl. 1 btl. 1 btl. 1 btl. - - 1 btl.

Soft paper towel 10 sheets 1 pack 1 pack 1 pack 1 pack 1 pack 1 pack 1 pack 1 pack 1 pack

Reagent I, 1 bottle (50ml) (50ml) (50ml)

Reagent II, 1 bottle (50ml) (30 gr) (30 gr)

Plastic bottle (100 ml ) 1 btl. 1 btl. 1 btl.

Gas detection tubes

Box contains 5, 10 or 20

pcs.

Tedlar bag 10 litres 1 pcs. 1 pcs. 1 pcs. 1 pcs. 1 pcs. 1 pcs. 1 pcs. 1 pcs. 1 pcs.

1) Ionisation type detector only (SH-2607TS)

2) Low range SF6 detection

3) High range SF6 detection

Note: Gas sensors, which are related to the TG-numbers TG-1100, TG-1200, TG-1500, TG-2300 TG-3300 will require a prepared calibration mixture form a cylinder for calibration. Please refer to the next paragraph for more information on calibration with mixtures from cylinders.

2800

4000

1 box - 1 box 1 box 1 box 1 box - - 1 box

1 box

(20)

1400

3100

3900

4400

4500

1 box

(10)

100

800

900

300 500

HCN SO

1 box

(10)

1 box

(10)

4500

200

600

1200

2100

2900

3000

3200

4200

H2S NH

1 box

(10)

1 box

(10)

2400 400

2200

3400

4300

HCl HF NO

1 box

(5)

3700

4700

1 box

(10)

700

1700

4100

4600

1 box

(10)

Bionics Instrument 4

1. Introduction

1.4 Calibration mixtures form cylinders

Although most calibrations can also be performed with calibration gas mixtures from cylinders it is recommended to use mixtures prepared with the calibration materials described in this manual. Although not all gas mixtures can be prepare with the Bionics Instrument kits.

1.4.1. Performance of calibration gas mixtures from a cylinder

Calibration gases in cylinders are in most cases a mixture of the target gas in N2. The gas mixture contains often 0% humidity. This composition of the mixture makes it very stable and allows it to be stored for a considerable period of time. A disadvantage of the composition is that it does not represent the gas composition of a real leakage, where often oxygen and humidity (from the air) will be present. Although nearly all gas detectors of Bionics Instrument do not require oxygen or humidity for the detection the presence of humidity might cause gases to decompose (react) to other gases. For example BF3 can react to form H3BO3 and HF. So in the detection of BF3 it will also be the H3BO3 and HF which have to be detected.

Besides the reactions of a gas in normal air also the folling effect has to be considered when calibrating with a gasmixture form a cylinder. Because of the absence of humidity the evaporation of the electrolyte through the membrane can be increased. Although this evaporation is always very small exposure of the sensor to the calibration mixture form a cylinder over a longer time periode (> 5 minutes) might decrease the thicknes of the electrolyte layer between the measuring electrode and the membrane. This in turn might cause a small deviation in the calibration setting (span) of the sensor.

The following gases can not be prepared with the calibration materials from the Bionics Instruments calibration kits:

• H

• CO (for calibration of sensor related to TG-1200)

• CH

• O

Calibration mixtures for these gases can be obtained from all major specialty gas suppliers or from Bionics Instrument.

When calibrating a sensor with a gas mixture form a cylinder it is important not to expose the sensor for a long time period to the mixture. We advise to minimize the duration of exposure and not to

(for calibration of sensor related to TG-1500)

(for calibration of sensor related to TG-2300 and TG-3300)

(for calibration of sensor related to TG-1100)

Bionics Instrument 5

2. General description

2. Components - a general description

2.1 Explanation of the tools and connections

Before explaining the preparation of the different gas mixtures the operation of the mini pump (for the calibration of diffusion type detectors only) and the use of the Kitagawa pump are described. Also the connection of the Tedlar bag to your detector – suction and diffusion type is explained. The Tedlar bag is a special polymer bag which will contain your calibration mixture.

Some gases inserted in the Tedlar bag may decompose (or react) over time giving you a lower concentration of the calibration gas. For this reason calibrations should be performed with 60 minutes after preparing the gas mixture.

2.2 Operation of the mini pump for the calibration of diffusion type detectors

The mini pump is compact portable unit, which provides the necessary flow for the calibration of diffusion type detectors.

The pump is linked to a flow cap, which is mounted on the gas sensor to be calibrated. The most common flowcap (for Bionics Instrument gas sensors) is shown on the next page.

The parts of the minipump:

1. Power switch

2. Suction nozzle

3. Air output nozzle

4. Cover of battery compartment

5. Silicon tube (8mm outer dia. 4 mm inner dia.)

6. Flow regulator

Specifications:

Batteries two batteries of type D Flow rate 0.1 – 2 L/min

For details about the calibration procedure (e.g. settings of span and zero) always refer to the manual of your gas detector.

Bionics Instrument 6

2. General description

2.3 Use of the flow cap for the calibration of diffusion type detectors

The flow cap can be used for the calibration of Bionics Instrument gas sensors GS-DS, GSDY, GS-DX, GS-DP, GS-EKP (GS-ELP) and GS-BY. When correctly connected the gas/air mixture entering the flow cap should enter the inner chamber through the centre hole (2).

The parts of the flow cap:

1. Exit gas/air mixture

2. Entrance gas/air mixture

3. Silicon ‘O’ ring

4. Silicon tube (8mm outer dia. 4 mm inner dia.)

It is important that the gas/air mixture – which is exposed to the membrane of the sensor - is coming from the centre hole in the flow cap.

The pump should always be placed after the flow cap (providing suction through the flow cap) to avoid unwanted absorption of gases in the pump.

Bionics Instrument 7

2. General description

2.4 Applying a calibration mixture to a diffusion type detector

Make sure to set the zero point of your gas detector first – as stated in the manual of your detector – before applying the calibration gas.

Connect the Tedlar bag, flowcap and pump according to the drawing below. Open the tap on the Tedlar bag before activating the pump. This will avoid creating a vacuum under the membrane and by this possibly influencing the performance of the calibration.

The silicon tube between the Tedlar bag and the flow cap should be short (max. 3 cm) to avoid any absorption of the calibration gas. When required extend the tube with a piece of Teflon (PTFE) tubing.

Although nearly all gas concentrations used for the calibration are safe, inhalation of these mixtures should be avoided. Ensure that during calibration the gases are always vented to a safe location!

Bionics Instrument 8

3. Preparing a calibration gas mixtures – Tedlar bag

3.1 Preparing gas mixtures with the calibration materials

This chapter describes the preparation of the following calibration gas mixtures:

PH3 in air kit K-I CL2 in air kit K-II HCN in air kit K-III SO2 in air kit K-IV H2S in air kit K-V NH3 in air kit K-VI HCL in air kit K-VII HF in air kit K-VIII NO2 in air kit K-XI

Bionics Instrument 9

3. Preparing a calibration gas mixtures – Tedlar bag

3.2.1 Preparing a Phosphine (PH3) gas mixture with kit K-I

1. Connect the double bellow pump to the Tedlar bag and fill it approximately half with clean air from the room.

2. Break both tips of the gas generation tube – NO. PC-21 – using the tube breaker of the Kitagawa pump.

3. Open the belonging bottle (NO. PC-22) with gas generation solution and immerse the short white reagent layer of the tube so that the reagent is thoroughly moistened.

4. Remove the tube and wipe it with a paper towel.

5. Connect the gas generation tube between the Tedlar bag and the double bellow pump. The connection with the bag can be made with a small piece of silicon tube (max. length 3 cm). Have the arrow of the gas direction (on the tube) facing towards the bag. When connected wait one minute.

6. Squeeze the double bellow pump several times to introduce air in the Tedlar bag. Make sure the valve of the bag is open.

7. When approximately 1 litre has been introduced to the bag remove the double bellow pump and close the valve of the Tedlar bag.

8. Disconnect the gas generation tube from the Tedlar bag and dispose it. Close the valve of the Bag. (Note the generation tube will no longer produce gas after 2-3 minutes of use)

9. Connect the double bellow pump to the bag – open up the valve

- and fill the remainder with clean air from the room – close the valve again.

10. Gently kneed the Tedlar bag to mix the air and gas.

Bionics Instrument 10

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Bionics Instrument K-I, KII, K-III, K-IV, K-V User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual