ENMET EX-5175-EC User Manual

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Page 1

ENMET Corporation

PO Box 979 Ann Arbor, MI 48106-0979

www.enmet.com

EX-5175-EC

Sensor/Transmitter

Manual

Manual Part Number 80003-099 MCN-459, 12/13/11

Page 2

Table of Contents

1.0 I

NTRODUCTION

1.1 Unpack ............................................................................................................................................................................... 1

1.2 Check Order ....................................................................................................................................................................... 1

1.3 Serial Numbers................................................................................................................................................................... 1

2.0 F

EATURES OF THE

3.0 I

NSTALLATION OF THE

3.1 Mounting the EX-5175-EC Enclosure ............................................................................................................................... 3

3.2 Wiring the EX-5175-EC to a Control Unit ........................................................................................................................ 4

3.3 Start up ............................................................................................................................................................................... 5

3.3.1 Typical Start Up .............................................................................................................................................................................. 5

4.0 O

PERATION OF THE

4.1 Normal Display Mode ........................................................................................................................................................ 6

4.1.1 Alarm Conditions EX-5175-EC ..................................................................................................................................................... 6

5.0 M

AINTENANCE OF THE

5.1 Maintenance Menu ............................................................................................................................................................. 7

5.2 Calibration of the EX-5175-EC ......................................................................................................................................... 8

5.2.1 Zero Adjust...................................................................................................................................................................................... 9

5.2.2 Gas Span ......................................................................................................................................................................................... 9

5.2.3 Exit Maintenance Menu .................................................................................................................................................................. 9

5.3 Sensor Replacement ......................................................................................................................................................... 11

6.0 R

EPLACEMENT PART NUMBERS

7.0 WARRANTY....................................................................................................................................................... 12

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

EX-5175-EC ............................................................................................................................. 2

EX-5175-EC ........................................................................................................................ 3

EX-5175-EC ........................................................................................................................... 6

EX-5175-EC ....................................................................................................................... 7

............................................................................................................................ 12

List of Figures and Tables

Figure 1: EX-5175-EC Features................................................................................................................................. 2

Figure 2: EX-5175-EC Mounting Dimensions ............................................................................................................ 3

Figure 3: Terminal Positions EX-5175-EC Sensor/Transmitter ................................................................................. 4

Table 1: EX-5175-EC maintenance Menus Sequence .............................................................................................. 7

Figure 4: Calibration Adapter EX-5175-EC Sensor/Transmitter ................................................................................ 8

Table 2: Examples of S/T ranges, alarm Points and Calibration Gas........................................................................ 8

Figure 5: EX-5175-EC Maintenance Menu Flow chart ............................................................................................ 10

Figure 6: Sensor Replacement ................................................................................................................................ 11

Reference information:

OTE

: [important information about use of instrument – if not followed may have to redo some steps.]

ARNING

AUTION

: [affects equipment – if not followed may cause damage to instrument, sensor etc…]

[affects personnel safety – if not followed may cause bodily injury or death.]

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EX-5175-EC ENMET Corporation

1.0 Introduction

The ENMET EX-5175-E toxic gas. The EX-5175-EC is meant to be used in conjunction with an appropriate power supply and controller. The ENMET EX-5175-EC sensor/transmitter has been designed and approved to be used in a Class I, Div. 1, Groups B, C, D, classified areas. The approval was issued by CSA International.

OTE

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

1.1 Unpack

Unpack the EX-5175-EC 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.

LECTROCHEMICAL

, EC sensor/transmitters (S/T) is a 3-wire, 24 VDC 4-20mA S/T for the detection of

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, the contents of the shipment against the purchase order. Verify that the EX-5175-EC is received as ordered. [Each EX-5175-EC 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 EX-5175-EC is serialized. These numbers are on tags on the equipment and are on record in an ENMET database.

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EX-5175-EC ENMET Corporation

POT 3

POT 4

See Note

POT 2

Note:

3 Alarm

Power /Fault

Magnetic switch

2.0 Features of the EX-5175-EC

See Figure 1 for location of features:

Feature Description Display

Gain Potentiometer (POT)

Visual Alarms

Magnetic Switches

Sensor

LCD: Indicates the level of gas detected by sensor POT 1: Display contrast adjustment

POT 2: POT 3: Not Used, Do not adjust POT 4:

LED indicators:

Power / Fault Indicator LED, Green / Red Alarm (3) Indicator Red LED, user adjustable

ENU

: Advances the instrument display through menus (Zero, Span, Exit)

ELECT

: Selects the Zero, Span, Exit menu or sets proper calibration values for Zero or Span

For sensing gas at

PPM

or LEL levels, see Table 3 for sensor types

Magnetic switches control the instrument maintenance functions. The switch locations are indicated by M

ENU

and S

magnetic field pulse is applied by momentarily putting the end of the magnet in proximity to the switch and then removing it. Referred to as tap. Since the magnetic field penetrates the window, the enclosure cover is not removed in order to perform calibration.

Three alarm points are preprogrammed into the EX-5175-EC sensor/transmitters. At each alarm point, an LED on the front panel is activated. These internal alarm settings are independent of the 4-20mA output alarm values that can be set at a controller.

POT 1

Indicators

See Note

Magnetic switch

Indicator

Display

ENU

Select

Internal PCB View

Sensor

POT 2, POT 3and POT 4

ELECT

are not used, Do Not Adjust

ELECT

. A

External View

Figure 1: EX-5175-EC Features

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EX-5175-EC ENMET Corporation

Mounting Holes

Sensor/Transmitter

3.0 Installation of the EX-5175-EC

AUTION

3.1 Mounting the EX-5175-EC Enclosure

AUTION

Area must be declassified during installation.

The ENMET EX-5175-EC gas sensor/transmitter (S/T) is a 3-wire, 24 VDC, 4-20 mA S/T for the detection of toxic gas. The S/T is meant to be used in conjunction with an appropriate power supply and controller. The ENMET EX-5175-EC sensor/transmitter has been designed and approved to be used in a Class I, Div. 1, Groups B, C, D, classified areas. The approval was issued by CSA International. Appropriate wiring, conduit and fittings are required for proper installation in a explosion proof rated environment.

: 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. Also, take into consideration environmental factors when deciding on S/T location. Avoid locations where the S/T may be damaged by liquid immersion, excessive heat or other know hazards. Also, take precautions to insure condensation inside of the conduit does not enter the S/T.

Mount the enclosure, using the two mounting holes provided see Figure 2. Pay particular attention to the source and density of the gas being detected when choosing the location. Mount the S/T near the ceiling for lighter than air gases /vapors and near the floor for heavier then air gas/vapors. Contact ENMET if you have questions regarding your application.

: Before connecting S/T to controller remove the power source to controller. Failure to do so may cause damage to

sensitive components.

Optional Conduit fitting Typically: ½″ NPT female

Sensor

½″ NPT female

2 places, 0.313″

Sel

Enclosure Top View

Enclosure Side View

Sensor

Figure 2: EX-5175-EC Mounting Dimensions

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EX-5175-EC ENMET Corporation

Wires to

Sensor/Transmitter Enclosure

Cutaway View

Printed Circuit Board

Display Overlay Screws

Display Overlay Standoffs

Magnetic Switches

Printed Circuit Board (PCB)

side of PCB

3.2 Wiring the EX-5175-EC to a Control Unit

AUTION

*Contact ENMET for Modbus

Area must be declassified during installation.

Run conduit and 16

AWG

(1.5

) wires to the enclosure from the power supply and controller. If the EX-5175-EC is

installed in a hazardous location as defined by the National Electrical Code, then ALL wiring must be in accordance with the National code and any local governing codes.

Open the enclosure, and remove the 2 screws that retain the display overlay to the circuit board. Use caution when removing the over lay. Do not damage the magnetic switches. Remove the two overlay standoffs and remove the circuit board, exposing the terminal strips on the bottom of the circuit board.

Do not disconnect the circuit board wiring. Connect the wires from the controller (power supply) to the supplied J4 plug then attach to J4 terminal. See Figure 3 for locations

J4 P

LUG – TERMINAL TO CONTROLLER WIRING

Position Function

1 +

24 V

power 2 GND 3 4 - 20 mA out

To J4

5 4 3 2 1

4* RS-485 D+ 5* RS-485 D–

Controller

Plu g J4

1 2 3

Address information

Display Overlay

Circuit Board Bottom View

(2 places)

Display

(2 places)

 J4 and J8 Terminals are

located on the bottom

When wiring is complete, reassemble the EX-5175-EC. Use caution when installing the overlay so as not to damage the magnetic switches. Put the cover back on the S/T Do Not apply power to the S/T without the cover in place.

(2 places)

Display Overlay

(2 places)

(PCB)

Figure 3: Terminal Positions EX-5175-EC Sensor/Transmitter

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EX-5175-EC ENMET Corporation

EX-5175

5175

1256

0ppm

0ppmC

0ppmF

3.3 Start up

When the EX-5175-EC transmitter is first powered up, it goes through a series of momentary screens, which identify the instrument model number, serial number and software revision. After all of the momentary screens have been displayed, the instrument arrives at the Main Gas Display showing the gas concentration and unit of measurement.

Depending on transmitter configuration and calibration condition, the furthest right character in the display may flash a letter indicating the instrument status. See the Section 4.1.2 below.

3.3.1 Typical Start Up

When power is supplied to the EX-5175-EC, the S/T will display the following sequence of information:

OTE

Software revision may cause variations of display output.

Example of Display Function

The instrument: Serial Number

The instrument: Software Revision

The instrument: Model Note Toxic is not displayed

S/W X.X

IF the right most character is a flashing

0ppmW

For Toxic Gas IF the right most character is a flashing C

IF the right most character is a flashing F

The instrument is in Warm-up mode

 This should last about 1 minute  The Signal Output is held at 4mA during warm-up

The instrument: Normal Display Mode Measurement of target Gas

The last calibration of the instrument was invalid

 The instrument must be recalibrated

There is a sensor fault

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EX-5175-EC ENMET Corporation

4.0 Operation of the EX-5175-EC

It is best to have the EX-5175-EC transmitters powered up and operational for 24 hours before applying calibration or test gas to them.

4.1 Normal Display Mode

When the EX-5175-EC is installed as described in section 3, and in clean air, the POWER green LED is on, the display is lit and the information on the display is measurement of the target gas detected by the EX-5175-EC. The red alarm and fault LEDs are not lit.

To advance through displays of operational information tap the magnet over the M

OTE

Software revision may cause variations of display output.

See sequence of operational information below:

Display Measurement of the target gas Tap the magnet over the M

ENU

button

ELECT

0PPM

ENU

Display indicates Alarm 1 Set point Tap the magnet over the M

ENU

button

ELECT

A1: 10

ENU

Display indicates Alarm 2 Set point Tap the magnet over the M

ENU

button

A2: 20

ENU

ELECT

Display indicates Alarm 3 Set point Tap the magnet over the M

ENU

button

ELECT

A3: 50

ENU

Display indicates mA Span range (Full Scale)

Tap the magnet over the M

ENU

button

mA: 100

ENU

ELECT

Display returns to gas measurement

ENU

button.

No Function for the

ELECT

in this mode

button

Operational Display Flow Chart

4.1.1 Alarm Conditions EX-5175-EC

There are three alarm set points available. These alarm set points can be changed within limits; see the maintenance section of this manual for the procedure.

If the gas concentration increases above that of the alarm set point, the associated red LED is lit.

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EX-5175-EC ENMET Corporation

5ppm

Exit

5.0 Maintenance of the EX-5175-EC

AUTION

5.1 Maintenance Menu

Do not open the

EX-5175-EC S/T

in a classified area.

: Do Not Attempt A Span Procedure Without Calibration Gas Applied to The Sensor; if this is done, the S/T is forced

into a calibration fault mode.

Magnetic switches control the M display panel, see Figure 3. The M numbers such as alarm points, calibrations gas, etc. The S

ENU

and S

ELECT

functions. The M

ENU

switch is used to display the various menu options and make incremental changes to

ELECT

ENU

and S

ELECT

switch locations are indicated on the

switch is used to select that option, set zero or span digit.

Most maintenance functions are controlled by simple taps of the supplied magnet on the transmitter glass, below the M

ELECT

boxes on the front panel.

To enter the maintenance menu hold the magnet over the M

ENU

switch for 2 to 4 seconds

Table 1 indicates the maintenance menu sequence see Figure 5 for a detailed maintenance menu flow chart.

Table 1: EX-5175-EC maintenance Menus Sequence

Example of Display Function

Normal Display Mode

Measurement of target gas

Hold the magnet over M

ENU

switch for 2 – 5 seconds to enter the Maintenance Menu

The Power/Fault LED will flash Green – Red to indicate the EX-5175-EC is in Maintenance Mode

To exit the maintenance Menu and return to the Normal Display Mode:

Tap the magnet over the M

Zero

Tap the magnet over the M

Span

If intended function Tap the magnet over S

ENU

switch to advance to the Zero procedure

For adjusting Zero: If intended function Tap the magnet over S

OTE

ENU

switch to advance to the Span procedure

For adjusting the Span: If intended function Tap the magnet over S

: Not applicable for Oxygen S/T.

ELECT

switch

Tap the magnet over the M

Alarm1

ENU

switch to advance to each Alarm set point procedures

Alarm2

For adjusting the Alarm 1, 2 and 3 set points: If Intended function Tap the magnet over S

ELECT

switch

Alarm3

ENU

and

Tap the magnet over the M

mA Span

ENU

switch to advance the mA Span set point procedure

For adjusting the mA Span set point: If intended function Tap the magnet over S

Taping the M You must Tap the S

OTE

: If the S/T fails to respond, the magnet may have become weak and may need to be replaced.

ENU

switch without taping the S

ELECT

switch in order to change the desired operation.

ELECT

switch will allow you to cycle through the menu options.

ELECT

switch

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EX-5175-EC ENMET Corporation

Output, for Gas

Inpu

t, for Calibration

5.2 Calibration of the EX-5175-EC

Calibration is the process of setting the instrument up to read accurately when exposed to a target gas. The Zero function sets the clean air reference point and the Span function sets the sensitivity of the instrument.

Initial Calibration: Wait 24 hours after initially supplying power to the EX-5175-EC sensor/transmitter (S/T) before initial calibration. The S/T has been precalibrated at the factory, and initial field calibration should result in only fine tuning to circuit, as well as a way to check that installation is successful. It is not necessary to open the enclosure to make adjustment. The calibration functions are operated with magnets from outside the enclosure through the open the S/T unless the area is de-classified.

Calibration Zero and Span functions are two separate procedures. They operate independently of each other. It is recommended that the Zero procedure be done prior to the Span procedure. ENMET Corporation recommends at least quarterly calibration of the EX-5175-EC transmitters.

Calibration equipment is available from ENMET Corporation to calibrate the EX-5175-EC sensor/transmitters. A calibration adapter will have a fitting for the gas cylinder on one side, and a cover to go over the sensor housing on the other.

Generally, a cylinder of 20.9% Oxygen is used to provide a fresh air reference or Zero point for the calibration. Another cylinder is used to provide the Span reference point for calibration. Depending on the instrument calibration, the Span gas may be the same gas that the instrument is calibrated to display, or it may be another gas, which ENMET has found to have a similar response.

OTE

: Zero function is Not applicable for Oxygen sensor/transmitters.

and

SELECT

switches. Do Not

Select

Calibration Cover

or Optional Gas Sampling

Regulator

Gas Cylinder

Figure 4: Calibration Adapter EX-5175-EC Sensor/Transmitter

Table 2: Examples of S/T ranges, alarm Points and Calibration Gas

Gas Range Alarm 1* Alarm 2* Alarm 3* Cal Gas

Ammonia 0 – 100 PPM 25 PPM 50 PPM 75 PPM 25 PPM NH3 Carbon Monoxide 0 – 500 PPM 35 PPM 50 PPM 200 PPM 100 PPM CO Hydrogen 0 2000 PPM 200 PPM 500 PPM 1000 PPM 800 PPM H2 Hydrogen Sulfide 0 – 100 PPM 10 PPM 20 PPM 50 PPM 20 PPM H2S Oxygen 0 – 30% by Vol 17% by Vol 19.5% by Vol 23.5% by Vol 20.5% by Vol Sulfur Dioxide 0 – 300 PPM 20 PPM 50 PPM 100 PPM 100 PPM SO2 If not listed consult ENMET Distributor or ENMET Corp for additional information

OTE

: These internal sensor/transmitter alarms are independent of the 4-20mA Controller alarm point settings.

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EX-5175-EC ENMET Corporation

5.2.1 Zero Adjust

Zero function is Not applicable for Oxygen sensor/transmitters, go to Section 5.2.2 Gas Span. A ZERO function should be performed only when the EX-5175-EC sensor/transmitter is exposed to fresh air. If the air at the

sensor is in question, use a cylinder of 20.9% oxygen to provide a clean air reference. Attach the cylinder to the calibration adapter.

Enter the maintenance menu by placing the magnet over M

ENU

switch for 2 to 4 seconds. See Figure 5, EX-5175-EC

Maintenance Menu flow chart. The second menu available is the Zero. Tap the S

ELECT

switch to perform a Zero.

 If the Zero is successful, Cal OK appears on the display and in 1 – 2 seconds, display will change to Span.

If you wish to Span the sensor Tap the S If you wish to Exit the maintenance menu, Tap M

ELECT

switch you are now ready to apply gas. Proceed to gas span step 2

ENU

switch until Exit is displayed, then tap S

ELECT

switch to return to the

instrument Normal Gas Display

 If the Zero is Not successful, sensor is outside of safe parameters to be zeroed, the display will read Bad Zero. Repeat

Section 5.2.1 Zero Adjust making sure to use a cylinder of 20.9% Oxygen.

5.2.2 Gas Span

It is recommended that the Zero Function be performed first. Enter the maintenance menu. See Figure 5, EX-5175-EC Maintenance Menu flow chart.

1. Tap the M

2. Attach the associated calibration gas cylinder to the regulator and calibration cover. See Figure 4.

OTE

You can change the Calibration Gas Level. H

The M The S

3. Open the valve to apply the calibration gas to the sensor, wait approximately 120 seconds(2 minutes)

4. Tap the S

and a signal level.

5. Watch for the signal level to stabilize. Typical 2 – 4 minutes.

6. Once the signal level has stabilized, the EX-5175-EC will automatically lock in the calibration data and:

 If the Span is successful, Cal OK appears on the display momentarily, then advances to Alarm 1. Remove calibration gas.

To exit maintenance menu tap the M

ENU

switch once to show Span on the display.

OLD

the magnet over the S

ENU

switch changes digit indicated by underscore cursor

ELECT

switch locks underscored digit and moves to next digit

ELECT

switch to perform a Span procedure. The display will alternate between the calibration gas concentration

ENU

switch until Exit appears, then tap the S

ELECT

switch for 2 – 4 seconds

ELECT

switch.

 If the sensor is outside of acceptable parameters, Bad Span is displayed momentarily, then returns to Span.

Remove calibration gas. Tap the M

ENU

switch until Exit appears, then tap the S

ELECT

switch. Check span gas and

repeat calibration in 30 – 60 minutes.

 If the sensor did not respond to gas, Same mV is displayed momentarily, then returns to Span.

 Remove calibration gas, tap the M

ENU

switch until Exit appears, then tap the S

ELECT

switch and try calibration again in 30-60 minutes. If the sensor will not calibrate See Section 5.4.

 N

OTE

: Some software revisions require the S

ELECT

switch be tapped to accept the signal.

7. Calibration is complete.

5.2.3 Exit Maintenance Menu

Exit maintenance, by tapping on the M instrument Normal Gas Display.

ENU

switch until Exit appears on the display. Tap the S

ELECT

switch to return to the

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EX-5175-EC ENMET Corporation

Cal OK

Bad ZERO

PV:

Apply

PV:

Cal OK

Same mV

Span

mA Span

SetTD

sec

Alarm3

SetTD

sec

SetTD

sec

Alarm2

Normal Display Mode

5ppm

OLD the magnet over the MENU switch for 2 – 4 seconds

to enter the Maintenance Menus

Tap the

Exit

ELECT

Display Mode.

Tap the magnet over the MENU switch to cycle through Maintenance Menus

Zero

ELECT

Bad Sens

ELECT switch to return to the Normal

See Section 5.2.3

ELECT

If the Zero signal is not within Preset Specs the EX-5175-EC will

Tap the SELECT switch to initiate Zero adjustment

the Zero signal is within Preset Specs the EX-5175-EC will

display Cal OK, See Section 5.2.1 display Bad ZERO

NOTE: Some software revisions require the SELECT switch be

tapped to accept the signal.

ELECT

NOTE: You can change the Calibration Gas Level.

The S

See Section 5.2.2

HOLD the magnet over the SELECT switch

ELECT

The M

ENU

switch changes digit indicated by underscore cursor

ELECT

switch locks underscored digit and moves to next digit

Calibration Gas until signal value becomes stable (about 1 to 4 minutes) See Figure 4 If cal is good display will indicate OK or Same

If cal is not within preset “range” display will

indicate Bad Sens

Select

Alarm1

ELECT

100

return to Normal Gas Display: Tap MENU switch until EXIT is displayed Then tap SELECT switch

To change Alarm set points: Tap Menu switch until Alarm to be changed is displayed Tap Select switch to display the set point

The M

ENU

cursor The S

moves to next digit If change is not within range display returns to first digit If change is within range display moves to Set Time Delay

Use M delay. Between 0 and 5 seconds is allowed

If change is within range display moves to next menu Λ - Indicates increasing alarm

V - Indicates decreasing alarm

switch: changes digit indicated by underscore

ELECT

switch: locks in the underscored digit and

ENU

and S

ELECT

switches as above to change time

To change mA Span set point: Tap the M Tap the S

The M The S

ENU

switch until mA Span is displayed

ELECT

switch to display the set point

ENU

switch changes digit indicated by underscore cursor

ELECT

switch locks underscored digit and moves to next digit

Figure 5: EX-5175-EC Maintenance Menu Flow chart

Page 13

EX-5175-EC ENMET Corporation

Sensor /P C Board

5.3 Sensor Replacement

AUTION

Sensors should be replaced when they can no longer be calibrated. Replacement sensor part numbers are listed in Section 6.0 of this manual. If you do not know the proper part number for your sensor, be sure to have the EX-5175-EC serial number available when contacting your Distributor or ENMET Corporation Technical Support.

To replace a sensor, it is not necessary to open the transmitter housing. Turn off the sensor/transmitter. Remove the set screw from sensor housing base. Unscrew the sensor housing cover and remove Sensor/PC Board Assembly.

Place the new Sensor/PC Board Assembly into the sensor housing cover. Reassemble the sensor housing. Turn On the sensor/transmitter. After the new sensor has been installed, it is suggested to allow the sensor to stabilize for 24 hours.

A Factory calibration must be performed.

Enter the Maintenance menu, see section 5.0, advance to the Zero menu. Then while viewing the Zero menu, hold the magnet over the M

After 2-4 seconds, an F will appear on the far right hand side of the display. The F indicates that the instrument is in Factory mode.

Perform the calibration Zero and Span procedures as outlined in Section 5.2. Be sure that the F is present when selecting the Zero and Span functions.

The Factory calibration sets a calibration window for future standard instrument calibrations. Only perform a factory calibration when installing a new sensor!!

: Area must be declassified during sensor replacement.

OTE

: Sensor and PC Board are attached and should not be separated from each other.

ENU

switch for 2-4 seconds.

Set Screw

Sensor Housing Cover

Sensor Housing Base

Assembly

Figure 6: Sensor Replacement

Page 14

EX-5175-EC ENMET Corporation

6.0 Replacement Part Numbers

ENMET replacement part numbers:

Description Part Number

For EX-5175-EC p/n Sensor: Oxygen

Carbon Monoxide Hydrogen Sulfide Ammonia Sulfur Dioxide

Consult ENMET Distributor or ENMET Corp for additional sensors Regulator Assembly, for 34/58/103l cylinders

Magnet 50030-001 Calibration/Sampling Adapter 03700-034

Regulator Assembly, for 17/34l cylinders Calibration Gas, Consult ENMET Distributor or ENMET Corp.

67027-1100 67027-1200 67027-0200 67027-2400 67027-0500

02506-002

02506-004

7.0 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.

NOTE: 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 are Return for Repair Instructions and Form on the last pages of this manual. This Form can be copied or used as needed.

Manual Part Number 80003-099

January 2008 MCN-418, 04/16/09 MCN-447, 05/24/11 MCN-459, 12/13/11

Page 15

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 16

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: $_________________