ENMET EN User Manual

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Page 1

ENMET Corporation

PO Box 979 Ann Arbor, MI 48106-0979

Manual Part Number 80003-133

MCN-339, 10/04/05

EN / SDS

Electrochemical

Sensor/Transmitter

Installation Manual

Page 2

Table of Contents

INTRODUCTION ................................................................................................................................................................................... 1

1.0 UPON RECEIPT ............................................................................................................................................................................... 1

1.1 U

NPACK

............................................................................................................................................................................................ 1

1.2 C

HECK ORDER

1.3 S

ERIAL NUMBERS

2.0 MOUNTING AND WIRING ............................................................................................................................................................ 2

2.1 I

NSTALLATION OF SENSOR/TRANSMITTER

3.0 INITIAL CALIBRATION ................................................................................................................................................................ 4

4.0 STANDARD RANGES, CALIBRATION GASES, VOLTAGE READINGS AT CALIBRATION POINTS AND

APPROXIMATE TIMES TO SENSOR STABILIZATION ................................................................................................................. 5

5.0 ENMET PART NUMBERS............................................................................................................................................................... 6

5.1 R

EPLACEMENT SENSORS

5.2 C

ALIBRATION GASES

Calibration Gases and Accessories ................................................................................................................................................... 6

6.0 WARRANTY ..................................................................................................................................................................................... 7

APPENDIX A: INTERFERENCE TABLE ........................................................................................................................................... 8

.................................................................................................................................................................................. 1

............................................................................................................................................................................. 1

........................................................................................................................................ 3

................................................................................................................................................................... 6

........................................................................................................................................................................ 6

List of Illustrations

IGURE 1: SENSOR/TRANSMITTER, EXTERNAL FRONT VIEW

IGURE 1A: SENSOR/TRANSMITTER

IGURE 2: SENSOR/TRANSMITTER 4 – 20MA IN

IGURE 2A: SENSOR/TRANSMITTER 4 – 20MA IN

IGURE 3: CALIBRATION SETUP, 4 – 20MA SENSOR/TRANSMITTER

ABLE 1: ELECTROCHEMICAL SENSORS

10015-1105, E

..................................................................................................................................................... 5

XTERNAL FRONT VIEW

NEMA-4 P

...................................................................................................................... 2

................................................................................................ 2

ACKAGE, INTERNAL VIEW

........................................................................................................... 4

.............................................................................. 3

............................................................................ 3

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Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

Introduction

The ENMET toxic and oxygen sensor/transmitters (S/T) model EN series are two wire 4-20mA devices. The housing is a sealed NEMA-4 aluminum enclosure. The sensor/transmitter operates on 15 to 36VDC and can be connected to any control that utilizes a 4-20mA output. When connecting the sensor/transmitter to a control consult installation instructions and manuals for that control or contact ENMET or your ENMET distributor.

OTE

: All specifications stated in this manual may change without notice.

1.0 Upon Receipt

1.1 Unpack

Unpack the sensor/transmitter (S/T) and examine it for shipping damage. If such damage is observed, notify both ENMET customer service personnel and the commercial carrier involved immediately.

Regarding Damaged Shipments

OTE

: It is your responsibility to follow these instructions. If they are not followed, the carrier will not honor

any claims for damage.



This shipment was carefully inspected, verified and properly packaged at our company and delivered to the carrier in good condition.



When it was picked up by the carrier at ENMET, it legally became your company’s property.



If your shipment arrives damaged:

• Keep the items, packing material, and carton “As Is.” Within 5 days of receipt, notify the carrier’s local office and

request immediate inspection of the carton and the contents.

• After the inspection and after you have received written acknowledgment of the damage from the carrier, contact

ENMET Customer Service for return authorization and further instructions. Have your Purchase Order and Sales Order numbers available.



ENMET either repairs or replaces damaged equipment and invoices the carrier to the extent of the liability coverage, usually $100.00. Repair or replacement charges above that value are your company’s responsibility.



The shipping company may offer optional insurance coverage. ENMET only insures shipments with the shipping company when asked to do so in writing by our customer. If you need your shipments insured, please forward a written request to ENMET Customer Service.

Regarding Shortages

If there are any shortages or questions regarding this shipment, please notify ENMET Customer Service within 5 days of receipt at the following address:

ENMET Corporation

680 Fairfield Court

Ann Arbor, MI 48108

734-761-1270 734-761-3220 Fax

1.2 Check Order

Check, against the purchase order. Verify that the S/T is received as ordered. Each S/T is labeled with its target gas. If there are accessories on the order, ascertain that they are present. Check the contents of calibration kits. Notify ENMET customer service personnel of any discrepancy immediately.

1.3 Serial Numbers

Each sensor/transmitter is serialized. These numbers are on tags on the equipment and are on record in an ENMET database.

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Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

2.0 Mounting and Wiring

Each sensor/transmitter circuit and sensor are in a NEMA-4 aluminum enclosure, which has a combination liquid and RFI O-ring in the cover. When used with an appropriate liquid tight conduit fitting, the enclosure is sealed to the environment. The interior of a typical S/T is shown in Figure 2.

When determining location of S/T here are 3 main factors to consider.

♦ Density of gas to be detected: high for gases lighter than air and low for gases heavier than air ♦ Leak point: determination of the probable source of a leak ♦ In the flow of air in ventilated rooms.

Mount the sensor/transmitter to an appropriate stable vertical surface with the sensor facing downward.

AUTION

: Since the sensor/transmitter detects gas only at the sensor location, pay attention to the possible sources of gas, the

density of the gas, locations where the gas may be confined and locations where the gas may damage or injure property or personnel, when choosing locations of sensor/transmitters.

Mount the sensor/transmitter using the two mounting holes in the corners of the enclosure. For maximum RFI protection the enclosure should be grounded to earth ground, either by means of the mounting screws, a conductive conduit, or a wire connected to earth ground.

2.55”

0.68”

4.55”

Figure 1: Sensor/Transmitter, External Front View

2.55”

0.68”

4.55”

Figure 1a: Sensor/Transmitter 10015-1105, External Front View

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Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

•

2.1 Installation of Sensor/Transmitter

1. J Remove the cover, and mount the S/T in a location appropriate for the application. Use the enclosure mounting holes as shown in Figure 2. The sensor faces down. Pay particular attention to the source and density of the target gas in choosing the S/T location.

2. J The hole in the left side wall of the S/T enclosure is sized to accommodate a liquid tight conduit fitting. Run conduit from the S/T to the control. If intrinsically safe barriers are supplied, because the S/Ts are in a classified location, follow the applicable electrical code provisions for intrinsically safe wiring. Run two wires through conduit. If the conduit is metallic and does not contain other wiring likely to generate interference signals, unshielded insulated wires can be used. Otherwise, use two wire shielded cable and ground the shield to the S/T enclosure. The S/T enclosure should be grounded to earth ground for maximum RFI protection.

3. J Connect the plus wire to TB1-1 and the minus wire to TB1-2 on the S/T circuit board, as shown in Figure 2.

AUTION

: Before connecting S/T to C

ONTROL

remove the power source to C

ONTROL

. Failure to do so may cause damage to

sensitive components.

4 – 20mA, 12 – 28VDC

Liquid Tight Conduit Fitting

NEMA-4 Aluminum Enclosure

shown without cover

Mounting Hole 2 places

TB1

Circuit Board

Red LED

Sensor

Test Points

POTs: Gain and Zero

• Note: No Zero pot in oxygen S/T

Figure 2: Sensor/Transmitter 4 – 20mA in NEMA-4 Package, Internal View

4 – 20mA, 12 – 28VDC

Liquid Tight Conduit Fitting

NEMA-4 Aluminum Enclosure

shown without cover

Mounting Hole 2 places

TB1

Circuit Board

Red LED

Sensor

Test Points

POTs: Gain and Zero

Note: No Zero pot in oxygen S/T

Figure 2a: Sensor/Transmitter 4 – 20mA in NEMA-4 Package, Internal View

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Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

•

Red LED

POT’s: Gain Zero

•

Note: No Zero pot in Oxygen S/T

3.0 Initial Calibration

The S/T is pre-calibrated at the factory before shipment, and initial field calibration should result in only fine-tuning of the circuit. In all cases allow the S/Ts to stabilize; this may take as much as an hour depending on the type of sensor and the length of time it has been inactive. The S/T output is monitored with a voltmeter by means of the test points on the S/T circuit board see figure 2; the transfer function is:

4mA = 100 mv 20ma = 500 mv

tolerance: + or - 5 mv

On Toxic sensor/transmitters the LED also indicates current flow; it is dim at 4mA and bright at 20mA. When the sensor is stable and is in air uncontaminated by the target gas, adjust zero to 4mA = 100mv with the zero potentiometer, see Figure 2.

If a calibration kit was purchased and field calibration is desired, apply the span gas to the sensor. The regulator of the calibration adapter screws into the top of the gas cylinder; the cup of the adapter slips into the hub of the sensor/transmitter, see Figure 3. Allow the gas to flow for the time indicated in Table 1 in Section 4.0 and observe that the reading is stable. Adjust the gain potentiometer on the S/T board to the appropriate output while monitoring the voltmeter. The voltage readings for standard ranges are given in Table 1 in Section 4.0.

If the sensor/transmitter has a non-standard range, and/or a non-standard calibration gas is used do a linear interpolation to determine the voltage reading at the calibration point.

Example: toxic, if the maximum range is 100ppm = 20ma, and a 25ppm gas is used, adjust the gain potentiometer so that the display reads 25 or the voltmeter reads 200mv.

(25/100)(500-100) + 100 = 200mv

Example: oxygen, the maximum range is 30.0% = 20mA, and a 20.9 gas is used, adjust the gain potentiometer so the display reads 20.9 or the voltmeter reads 379mv.

Remove the span gas and replace the S/T cover.

Test Points

TB1

Red LED

CALIBRATION

ADAPTER

Figure 3: Calibration Setup, 4 – 20mA Sensor/Transmitter

(20.9/30)(500-100) + 100 = 379mv

Test Points

TB1

CALIBRATION

ADAPTER

Circuit Board

POTs: Gain and Zero

Note: No Zero pot in oxygen S/T

REGULATOR

GAS CYLNDER

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Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

4.0

Standard Ranges, Calibration Gases, Voltage Readings at Calibration Points and

Approximate Times to Sensor Stabilization

Table 1: Electrochemical Sensors

Gas

Ammonia NH3 0 – 100 25ppm NH3 200 4 03218-025 Arsine (2) AsH3 0 – 0.5 0.5ppm PH3 0.375ppmAsH3 400 3 03202-005 Boron Trichloride BCl3 0 – 30 10ppm HCl 10ppm BCl3 233 3 03202-010 Carbon Monoxide CO 0 – 100 50ppm CO 300 2 03219-050 Chlorine (2) Cl2 0 – 10 5ppm Cl2 300 4 03231-005 Chlorine Dioxide ClO2 0 – 1.0 0.3ppm ClO2** 220 4 ** Dichlorosilane SiH2Cl2 0 – 30 10ppm HCl 3ppm SiH2Cl2 140 3 03202-010 Ethylene Oxide C2H4O 0 – 30 5ppm C2H4O 167 3 03232-005 Fluorine (2) F2 0 – 10 3ppm Cl2 7.5ppm F2 400 3 03231-003 Hydrogen H2 0 – 1000 800ppm H2 420 3 03227-800 Hydrogen Bromide HBr 0 – 30 5ppm HCl 25ppm HBr 433 3 03202-005 Hydrogen Chloride (2) HCl 0 – 30 10ppm HCl 233 3 03202-010 Hydrogen Cyanide HCN 0 – 30 10ppm HCN 233 2 03203-010 Hydrogen Fluoride (1) HF 0 – 10 5ppm Cl2 3ppm HF 220 4 03202-005 Hydrogen Sulfide H2S 0 – 100 20ppm H2S 180 2 03214-020 Nitrogen Dioxide NO2 0 – 30 5ppm NO2 167 2 03233-005 Nitric Oxide NO 0 – 100 25ppm NO 200 1.5 03234-025 Oxygen O2 0 – 30 % 20.9% O2 379 2 03296-209 Ozone (1) O3 0 – 1.0 0.3ppm O3** 220 3 ** Phosgene (1) COCl2 0 – 1.0 Phosphine (2) PH3 0 – 1.0 0.5ppm PH3 300 1.5 03205-005 Silane SiH4 0 – 30 5 ppm SiH4 167 2 03306-005 Silicon Tetrachloride SiCl4 0 – 30 5ppm HCl 25ppm SiCl4 433 3 03202-005 Sulfur Dioxide SO2 0 – 30 10ppm SO2 233 1.5 03215-010

OTE

: All specifications stated in this manual may change without notice.

(1) Require use of Sample Draw System. (2) Recommended use of Sample Draw System, for enhanced sensitivity and speed of response.

Symbol

Range*

(ppm) Calibration Gas

0.66ppm COCl2**

Correlation

Reading

(mV)

364 4 **

Stabilize

(min.)

ENMET Gas

Part Number

*0 = 4mA = 100mV, upper point = 20mA = 500 mV **Gas not available in cylinders, a gas generator must be used

OTE

: If a non-standard range and/or a non-standard calibration gas are used, utilize the equations in Section 3.0 to determine

voltage readings.

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Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

5.0 ENMET Part Numbers

5.1 Replacement Sensors

Sensor Gas Type ENMET Part Number

Chlorine 67020-0100 Hydrogen Sulfide 67020-0201 Hydrogen Cyanide 67020-0300 Hydrogen Chloride 67020-0400 Sulfur Dioxide (with H2S filter) 67016-0500 Phosgene 67020-0600 Hydrogen Fluoride 67020-0700 Ozone 67020-0803 Oxygen 67016-1106 Oxygen MRI 67013-008 Carbon Monoxide: For S/T P/N ending in -1203 67020-1201 Carbon Monoxide: For S/T P/N ending in -1207 67016-1200 Fluorine 67020-1400 Hydrogen 67020-1500 Nitrogen Dioxide 67020-1700 Nitric Oxide 67020-1750 Ammonia 67020-2400 Arsine 67020-4001 Phosphine 67020-4002 Silane 67020-4003

5.2 Calibration Gases

Calibration Gases and Accessories

Calibration gas part numbers are given in Table 1, in Section 4.0.

Adapter Style ENMET Part Number

For Ammonia, Nitric oxide, Hydrogen chloride, Hydrogen cyanide 02506-001 For Chlorine and Hydrogen sulfide 02506-002 For Sulfur dioxide and Nitrogen dioxide 02506-003 For Oxygen and Carbon monoxide 02506-000 Calibration Cap (required with all adapters) 03620-010 Calibration Cap Reactive Gases Calibration Cap Catalytic Sensor 03620-012 Calibration Regulator w/cal cup Oxygen, MRI 03600-002

Ozone generator, 0.5 to 5.0 ppm at 1.0 lpm 04055-0800

Contact ENMET

Page 9

Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

6.0 Warranty

ENMET warrants new instruments to be free from defects in workmanship and material under normal use for a period of one year from date of shipment from ENMET. The warranty covers both parts and labor excluding instrument calibration and expendable parts such as calibration gas, filters, batteries, etc... Equipment believed to be defective should be returned to ENMET within the warranty period (transportation prepaid) for inspection. If the evaluation by ENMET confirms that the product is defective, it will be repaired or replaced at no charge, within the stated limitations, and returned prepaid to any location in the United States by the most economical means, e.g. Surface UPS/FedEx Ground. If an expedient means of transportation is requested during the warranty period, the customer is responsible for the difference between the most economical means and the expedient mode. ENMET shall not be liable for any loss or damage caused by the improper use of the product. The purchaser indemnifies and saves harmless the company with respect to any loss or damages that may arise through the use by the purchaser or others of this equipment.

This warranty is expressly given in lieu of all other warranties, either expressed or implied, including that of merchantability, and all other obligations or liabilities of ENMET which may arise in connection with this equipment. ENMET neither assumes nor authorizes any representative or other person to assume for it any obligation or liability other than that which is set forth herein.

OTE:

When returning an instrument to the factory for service:

 Be sure to include paperwork.  A purchase order, return address and telephone number will assist in the expedient repair and return of your unit.  Include any specific instructions.  For warranty service, include date of purchase  If you require an estimate, please contact ENMET Corporation.

There is a Repair Return Form on the last pages of this manual. This form can be copied or used as needed.

Manual Part Number 80003-133 July 2004 MCN-339, 10/04/05

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Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

Interferant

Interferant Concentration

Instrument Reading

ethanol

1000

isopropanol

450 1

hydrogen sulfide

14 10

methanol

1200

hydrogen

1000

carbon monoxide

300 100

sulfur dioxide

25 -21

nitrogen dioxide

50 25

hydrogen cyanide

10 -18

Interferant Gas/Vapor

Concentration in ppm

chlorine

unsaturated hc (ethylene)

1.0 %

saturated hydrocarbons

abundant

Interferant

Interferant Concentration

Instrument Reading

hydrogen

1000

450

nitric oxide

100 25

Interferant Gas/Vapor

Concentration in ppm

ammonia

100

chlorine

hydrogen cyanide

ethylene

2.0 % *

carbon dioxide

5,000

methane

10,000

sulfur dioxide

10 *

hydrogen sulfide

10 *

nitrogen dioxide

10 *

isopropanol

1,025 *

gasoline vapor

saturated *

Appendix A: Interference Table

For Selected Sensors

Ammonia (3E-100 sensor)

The following gases cause a reading:

Gas/Vapor

The following gases or vapors have been tested and do not cause a reading:

in ppm

Carbon Monoxide (3E sensor)

The following gases cause a reading:

Gas/Vapor

The following gases or vapors have been tested and do not cause a reading:

in ppm

* With onboard filter; continuous high level exposure may reduce the filter efficiency

Page 11

Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

Interferant

Interferant Concentration

Instrument Reading

hydrogen sulfide

10 -0.3

sulfur dioxide

5 -1.2

nitrogen

dioxide

0.1

bromine

1.0

chlorine dioxide

0.32 0.3

ammonia

1,000

-1.1

Interferant Gas/Vapor

Concentration in ppm

carbon monoxide

300

carbon dioxide

100,000

nitrogen

100. %

hydrogen chloride

hydrocarbons, general

% range

hydrogen

1,000

ethanol

6.6 %

ammonia

Interferant

Interferant Concentration

Instrument Reading

carbon

monoxide

100 3

chlorine

20 -1

ethylene

500 2

hydrogen

100 5

hydrogen

20,000

100

hydrogen cyanide

10 1

sulfur dioxide

10 3

Interferant Gas/Vapor

Concentration in ppm

ammonia

100

carbon dioxide

5,000

methane

10,000

sulfur dioxide

nitrogen dioxide

Chlorine (3E sensor)

The following gases cause a reading:

Gas/Vapor

The following gases or vapors have been tested and do not cause a reading:

in ppm

Hydrogen Sulfide (3E sensor)

The following gases cause a reading:

Gas/Vapor

in ppm

The following gases or vapors have been tested and do not cause a reading:

Page 12

Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

Interferant

Interferant Concentration

Instrument Reading

hydrogen

sulfide

40†

chlorine

5 -1*

nitrogen dioxide

15 -40†

Interferant Gas/Vapor

Concentration in ppm

hydrogen chloride

10*

methane

2000

carbon monoxide

300

carbon dioxide

5,000

gasoline

300

sulfur dioxide

50*

nitric oxide

100

chlorinated HC's

<200

Interferant

Interferant Concentration

Instrument Reading

hydrogen sulfide

40*

nitrogen dioxide

10 -11

chlorine

10 -10

Interferant Gas/Vapor

Concentration

in ppm

carbon monoxide

100

nitric oxide

hydrogen

10,000

Hydrogen Cyanide(2E 30 sensor)

The following gases cause a reading:

Gas/Vapor

The following gases or vapors have been tested and do not cause a reading:

†Long term exposure may destroy sensor *with onboard filter; continuous high level exposure may reduce the filter efficiency

in ppm

Sulfur Dioxide(4S sensor)

The following gases cause a reading:

Gas/Vapor

in ppm

The following gases or vapors have been tested and do not cause a reading:

*With onboard filter; continuous high level exposure may reduce the filter efficiency

Page 13

Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

Interferant

Instrument Reading

hydrogen bromide

5 5

hydrogen sulfide

14 30

sulfur dioxide

3.5

chlorine

5 1

hydrogen cyanide

14 1

arsine

330 ppb

ethanol

6.6%

Interferant Gas/Vapor

Concentration in ppm

carbon monoxide

300

carbon dioxide

5000

nitrogen

100%

hydrocarbons

% range

hydrogen

1000

phosgene

chlorinated hydrocarbons

% range

ammonia

300

Interferant

Interferant Concentration

Instrument Reading

chlorine or bromine

.51

sulfur dioxide

2 2

hydrogen chloride

.75

Interferant Gas/Vapor

Concentration in ppm

alcohols (i.e. IPA)

1000

ammonia

100

hydrogen

1000

carbon monoxide

carbon dioxide

10%

unsaturated HC(ethylene)

hydrogen

sulfide

Hydrogen Chloride(3E sensor)

The following gases cause a reading:

Gas/Vapor

The following gases or vapors have been tested and do not cause a reading:

Concentration in ppm

Hydrogen Fluoride (3E 10 sensor)

The following gases cause a reading:

Gas/Vapor

in ppm

The following gases or vapors have been tested and do not cause a reading:

Page 14

Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

Interferant

Interferant Concentration

Instrument Reading

chlorine

1 2

hydrogen sulfide

10 -1

sulfur dioxide

5 -3.2

nitrogen dioxide

5 .5

bromine

1 3

ammonia

1000

-3.1

Interferant Gas/Vapor

Concentration in ppm

carbon monoxide

300

carbon dioxide

100000

nitrogen

100%

hydrogen chloride

hydrocarbons

% range

hydrogen

1000

hydrogen cyanide

ethanol

Interferant

Interferant Concentration

Instrument Reading

carbon monoxide

50 0

ethylene

500 0

sulfur dioxide

2 0

isopropanol

1090

180

Interferant Gas/Vapor

Concentration in ppm

ammonia

100

carbon dioxide

1000

chlorine

hydrogen cyanide

hydrogen sulfide

10*

methane

10000

nitrogen dioxide

sulfur

dioxide

Fluorine (3E 10 sensor)

The following gases cause a reading:

Gas/Vapor

The following gases or vapors have been tested and do not cause a reading:

in ppm

Hydrogen (2E 2000 sensor)

The following gases cause a reading:

Gas/Vapor

in ppm

The following gases or vapors have been tested and do not cause a reading:

*With onboard filter; continuous high level exposure may reduce the filter efficiency

Page 15

Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

Interferant Gas/Vapor

Concentration in ppm

hydrogen

1000

carbon monoxide

1000

carbon dioxide

10000

sulfur dioxide

chlorine

nitrogen dioxide

100

saturated HC, alcohols

abundant

Interferant

Interferant Concentration

Instrument Reading

chlorine

1 3

ozone

0.7

Interferant Gas/Vapor

Concentration in ppm

hydrogen chloride

nitrogen oxide

100

hydrogen

1000

carbon monoxide

1000

carbon dioxide

10000

saturated HC, alcohols

abundant

sulfur dioxide

ammonia

Nitric Oxide (3E 100 sensor)

The following gases or vapors have been tested and do not cause a reading:

Nitrogen Dioxide (3E sensor)

The following gases cause a reading:

Gas/Vapor

The following gases or vapors have been tested and do not cause a reading:

in ppm

Page 16

Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

Interferant

Interferant Concentration

Instrument Reading

chlorine

0.80

fluorine

100ppb

0.07

germane

1 1

nitrogen dioxide

0.09

Interferant Gas/Vapor

Concentration in ppm

hydrogen sulfide

sulfur dioxide

phosphine

100 ppb

carbon monoxide

300

carbon

dioxide

5000

nitrogen

100%

nitrogen monoxide

hydrocarbons

% range

hydrogen

1000

hydrogen cyanide

ammonia

hydrogen fluoride

3.8

hydrochloric acid

Interferant

Interferant Concentration

Instrument Reading

phosphine

100 ppb

110

chlorine

5 -400

hydrogen cyanide

100

ammonia

100 10

diborane

100 35

silane

100

germane

1.1 100

hydrogen selenide

50 ppb

Interferant Gas/Vapor

Concentration in ppm

hydrogen sulfide

sulfur dioxide

hydrochloric acid

carbon monoxide

300

carbon dioxide

5000

nitrogen

100 %

hydrocarbons

% range

hydrogen

1000

Ozone (3E 1 sensor)

The following gases cause a reading:

Gas/Vapor

The following gases or vapors have been tested and do not cause a reading:

in ppm

Arsine (2E sensor)

The following gases cause a reading:

Gas/Vapor

in ppm

The following gases or vapors have been tested and do not cause a reading:

*With onboard filter; continuous high level exposure may reduce the filter efficiency

Page 17

Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation

Interferant

Interferant Concentration

Instrument Reading

ammonia

5, drops to 0 in short time

abundant change in humidity

yes

Interferant Gas/Vapor

Concentration in ppm

hydrogen sulfide

sulfur dioxide

hydrochloric acid

carbon monoxide

300

carbon dioxide

5000

nitrogen

100%

chlorine

hydrocarobons

% range

hydrogen

1000

Interferant

Interferant Concentration

Instrument Reading

chlorine

0,5 -4

hydrogen cyanide

10 1

ammonia

100 <1

diborane

100 0.4

arsine

0.7

germane

1 1

disilane

yes

phosphine

300ppb

0.2

Interferant Gas/Vapor

Concentration in ppm

hydrogen sulfide

sulfur dioxide

hydrochloric acid

5‡

carbon monoxide

300

carbon dioxide

5000

nitrogen

100%

chlorine

1,5

hydrocarobons

% range

hydrogen

1000

hydrogen fluoride

3.8

hydrogen selenide

50ppb

Phosgene (3E sensor)

The following gases cause a reading:

Gas/Vapor

The following gases or vapors have been tested and do not cause a reading:

*With onboard filter; continuous high level exposure may reduce the filter efficiency

in ppm

Silane (3E 50 sensor)

The following gases cause a reading:

Gas/Vapor

in ppm

The following gases or vapors have been tested and do not cause a reading:

*With onboard filter; continuous high level exposure may reduce the filter efficiency ‡Short term gas exposure (min.)

Notes:

Page 18

PO Box 979 680 Fairfield Court Ann Arbor, Michigan 48106-0979

734.761.1270 Fax 734.761.3220

Returning an Instrument for Repair

ENMET instruments may be returned to the factory or any one of our Field Service Centers for regular repair service or calibration. The ENMET Repair Department and Field Service Centers also perform warranty service work.

When returning an instrument to the factory or service center for service, paperwork must be included which contains the following information:

 A purchase order number or reference number.  A contact name with return address, telephone and fax numbers  Specific instructions regarding desired service or description

of the problems being encountered.

 Date of original purchase and copy of packing slip or invoice

for warranty consideration.

 If a price estimate is required, please note it accordingly and be

sure to include a fax number.

Providing the above information assists in the expedient repair and return of your unit.

Failure to provide this information can result in processing delays.

ENMET charges a one hour minimum billing for all approved repairs with additional time billed to the closest tenth of an hour. All instruments sent to ENMET are subject to a minimum evaluation fee, even if returned unrepaired. Unclaimed instruments that ENMET has received without appropriate paperwork or attempts to advise repair costs that have been unanswered, after a period of 60 days, may be disposed of or returned unrepaired COD with the evaluation fee. Service centers may have different rates or terms. Be sure to contact them for this information.

Repaired instruments are returned by UPS/FedEx Ground and are not insured unless otherwise specified. If expedited shipping methods or insurance is required, it must be stated in your paperwork.

Note: Warranty of customer installed components.

If a component is purchased and installed in the field, and fails within the warranty term, it can be

returned to ENMET and will be replaced, free of charge, per ENMET’s returned goods procedure.

If the entire instrument is returned to ENMET Corporation with the defective item installed, the item will

be replaced at no cost, but the instrument will be subject to labor charges at half of the standard rate.

Page 19

Mailing Address:

Shipping Address:

Repair Return Form

ENMET Corporation PO Box 979 Ann Arbor, Michigan 48106

Phone Number: 734.761.1270 FAX Number: 734.761.3220

Your Mailing Address:

Contact Name: __________________________ Your Phone: _______________________ Your PO/Reference Number: _______________ Your FAX: _______________________

ENMET Corporation Attn: Repair Department 680 Fairfield Court Ann Arbor, Michigan 48108

Your Shipping Address:

Payment Terms: K COD

(Check one) K VISA / MasterCard______________________ ________ ________

Card number Expiration Card Code

K American Express______________________ ________ ________

Card number Expiration Card Code

Name as it appears on the credit card___________________________________

Return Shipping Method:

K UPS: K Ground K 3 Day Select K Next Day Air K ND Air Saver K 2-Day Air K UPS Account number: ________________________

K Federal Express: K Ground K Express Saver K P-1 K Standard K 2-Day Air K FedEx Account number: ________________________

Would you like ENMET to insure the return shipment? K No K Yes Insurance Amount: $_________________