ENMET AM-5175 User Manual

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Page 1

ENMET Corporation

PO Box 979 Ann Arbor, MI 48106-0979

www.enmet.com

Manual part number 80003-551

MCN-14-003, 03/20/14

AM-5175

Ambient Air Monitor

Manual

Page 2

Table of Contents

1.0 Introduction ..............................................................................................................................................................1

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

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

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

2.0 Components of the AM-5175 ..................................................................................................................................2

2.1 AM-5175 elements ...............................................................................................................................................2

2.2 AM-5175 Operational Features............................................................................................................................2

2.3 Circuit Board Features .........................................................................................................................................3

3.0 Installation of the AM-5175 ....................................................................................................................................4

3.1 Mounting AM-5175 .............................................................................................................................................4

3.1.1 Wiring the AM-5175 .....................................................................................................................................5

3.1.2 Power Supply ................................................................................................................................................5

3.3 Relay Contacts .....................................................................................................................................................6

4.0 Operation .................................................................................................................................................................7

4.1 Start Up AM-5175 ...............................................................................................................................................7

4.1.1 Typical Start Up ............................................................................................................................................7

4.2 Normal Display Mode ..........................................................................................................................................8

4.2.1 Alarm Conditions AM-5175 .........................................................................................................................8

5.0 Maintenance .............................................................................................................................................................9

5.1 Maintenance Menus .............................................................................................................................................9

5.2 Calibration of the AM-5175 ............................................................................................................................... 11

5.2.1 Exit Maintenance Menu .............................................................................................................................. 12

5.2.2 Zero Adjust ................................................................................................................................................. 12

5.2.3 Gas Span ..................................................................................................................................................... 13

5.2.4 Alarm Set Points ......................................................................................................................................... 14

5.2.5 mA Span Set ............................................................................................................................................... 14

5.3 Sensor Replacement ........................................................................................................................................... 15

5.3.1 A Factory calibration must be performed. .................................................................................................. 15

6.0 Accessory and Replacement Parts ......................................................................................................................... 16

7.0 Technical Data and Specifications ......................................................................................................................... 16

8.0 WARRANTY ........................................................................................................................................................ 17

List of Tables

Table 1 : Relay Failsafe Settings ....................................................................................................................................6

Table 2: AM-5175 Maintenance Menus Sequence ........................................................................................................9

List of Illustrations

Figure 1: External AM-5175 Features ...........................................................................................................................2

Figure 2: AM-5175 Circuit Board Features ...................................................................................................................3

Figure 3: Mounting AM-5175........................................................................................................................................4

Figure 4: Power Terminal Connections AM-5175 .........................................................................................................5

Figure 5: Relay Terminal Connections AM-5175..........................................................................................................6

Figure 6: AM-5175 Maintenance Menu Flow Chart .................................................................................................... 10

Figure 7: Calibration Adapter ...................................................................................................................................... 11

Figure 8: AM-5175 Sensor Replacement ..................................................................................................................... 15

Reference Information:

OTE

: [important information about use of instrument]

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.]

Earth Ground

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AM-5175 ENMET Corporation

1.0 Introduction

The AM-5175 is an ambient air monitoring instrument that measures and detects gases utilizing electrochemical sensor. The AM-5175 is NOT in an enclosure rated for use in a Class I, Div 1, Groups B, C, D classified area and can not be installed in a

hazardous location.

Features of the AM-5175:

 continuous monitoring of the ambient air  continuous LCD display of gas and vapor concentrations  menu driven operational and maintenance controls  menu driven calibration procedure  audio and visual alarms indicate unsafe conditions  alarm relay contacts available on terminals  a fault relay and visual fault alarm  alarm acknowledgement capability including audio defeat  mA outputs for target gas

OTE

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

1.1 Unpack

Unpack the AM-5175 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, the contents of the shipment against the purchase order. Verify that the AM-5175 is received as ordered. Each AM5175 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 AM-5175 is serialized. These numbers are on tags on the equipment and are on record in an ENMET database.

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AM-5175 ENMET Corporation

control the instrument maintenance functions. The

Select

Power Wiring

Visual Indicators:

Pushbutton/Membrane

Visual Indicator

Power/Fault

Front Cover

Sensor

2.0 Components of the AM-5175

2.1 AM-5175 elements

See Figure 1 for location of elements:

Feature Description Enclosure

Front Cover

2.2 AM-5175 Operational Features

The Display Panel is attached by a cable and is released by unscrewing the 4 screws located in the corners. After releasing the panel, it is swung upward, exposing the interior of the enclosure. See Figure 1 for location of features.

Feature Description Display

Audio Alarm(Horn) Visual:

Indicators and Alarms

Membrane Switches

A polycarbonate box, approximately 7 x 5 x 3, with a detachable front cover. 4 holes for mounting the enclosure to a vertical surface. Located at the corners of the bottom

of the enclosure, directly beneath the 4 front cover retaining screws. See Figure 3 Detachable front cover of AM-5175 with Display Panel. See Section 2.2 and Figure 1 There are 4 Screws that hold the front cover in place.

A single line, 8 character LCD with backlight. Indicates the level of gas detected by sensor. The numerical value of gas concentration and other information is displayed.

Audio alarm (105 dB at 30cm/12in). The audio alarm is activated when the unit is in alarm. LED indicators:

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

2 Pushbutton Switches on front panel pushbutton switch locations are indicated by:

ENU

↓: Advances the instrument display through operation information and maintenance

menus

ELECT

: Disables audio alarm temporally and

Selects the maintenance menu operations such as, Zero, Span, Exit menu or sets proper calibration values for Zero or Span

See Section 4.0 and 5.0 for operational and maintenance flow charts.

Three alarm points are preprogrammed into the AM-5175. At each alarm point, an LED on the front panel is activated. There are 4, 10 Amp relay contacts at each alarm point, plus a fault relay. See Section 3.2 for wiring information.

Alarm1, Alarm2, Alarm3

Remote Wiring Access

Switches

Audio Alarm

Retaining Screws

4 places

Strain Relief

Figure 1: External AM-5175 Features

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AM-5175 ENMET Corporation

Relay Terminals

Relays

Terminal J12

4-20mA Output

RS-485 Input/Output

Sensor Connection

2.3 Circuit Board Features

Feature Description Relay Terminals:

J14, J15, J16, J17

Terminal J12 Sensor Terminal J8 Data Terminal J19 Potentiometer 2, 3 & 4

This group of terminals is located on the Circuit Board. For the contacts for each of three alarm relays, and for the contacts of a fault relay.

See Section 3.3 For VDC back-up power in and the 4-20 mA output. See Section 3.1.2 Sensor connection, See Section 3.2 RS-485 input/output Not used in AM-5175 Do Not Adjust

Terminal J19

J14, J15, J16, J17

K1, K2, K3, K4

DC Power In

Terminal J8

Figure 2: AM-5175 Circuit Board Features

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AM-5175 ENMET Corporation

Right Side View

3.0 Installation of the AM-5175

The AM-5175 is supplied with a strain relief and a standard U.S. 3 prong power line cord.

OTE

: This control panel is NOT rated for hazardous locations. The control panel must be located in a NON-Hazardous area.

3.1 Mounting AM-5175

Mount the AM-5175 instrument on an appropriate vertical surface, leaving room for lid to be opened, using the mounting holes provided. Avoid areas with excessive vibration or temperature extremes. The holes in the bottom of the enclosure are 0.18 inch in diameter and form a 6.44″ x 4.47″ rectangle. See Figure 3

It is recommended to use #8 drywall anchors and screws for mounting the AM-5175 to a drywall/sheetrock surface.

Cover Inside View

Opened Upward Attached to Base

Access for Sensor / Remote Sensor Wiring

Dimensions are in inches.

Figure 3: Mounting AM-5175

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AM-5175 ENMET Corporation

Caution

3.1.1 Wiring the AM-5175

The electrical installation should conform to appropriate electrical codes, such as the National Electrical Code in the United States.

ARNING

The compliance of the installation to appropriate codes is not ENMET’s responsibility.

The AM-5175 should be powered through circuit breakers provided for this purpose.

3.1.2 Power Supply

The input power can vary from 100 to 240 VAC, 50/60 Hz. Power should be connected to the Power Input Terminal TB1 and the Ground screw. See Figure 4 for location. Instrument is supplied with a strain relief and a standard U.S. 3 prong power line cord.

For DC wiring 24VDC may be wired to J12, (J12-1)position 1 + with ground connected to (J12-2)position 2. Upon supplying power to the AM-5175:

 The green power on LED is lit.  The display backlight is lit, and instrument will step through a start-up sequence: unit serial number and software revision

may be shown on the display.

The instrument may go into alarm briefly, but the sensors stabilize quickly. If the instrument persists in alarm, acknowledge the alarm by pressing the S

ARNING

Continuous gas detection and alarm systems (110VAC/220VAC / 24VDC/12VDC powered) become inoperative upon

loss of primary power. Contact factory for specifications and pricing of backup battery systems.

AC Power Supply Terminal: TB1 Label on PCB Function 110VAC

TB1 ACL Line

Ground Screw

TB1 ACN Neutral

AC GND

ELECT

button. If alarm persists longer than 30 minutes, call ENMET customer service personnel.

Cover Inside View

Opened Upward

220VAC

Optional TB1 ACL Line

Ground Screw

AUTION

DC Power Supply/4-20mA

Terminal: J12

Sensor Terminal: J8

TB1 ACN Neutral

AC GND

: 110/220 VAC when applied

Position Function

1 + 2 GND 3 4 - 20 mA out

Position Function Color

1 + Sensor Red 2 Sensor Signal White 3 Sensor Ground Black

24 V

power

Figure 4: Power Terminal Connections AM-5175

: 110/220 Vac

when applied

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AM-5175 ENMET Corporation

Alarm

Position

Relays

Relay Terminals

Sensor Terminal J8

3.3 Relay Contacts

Relay contacts are available for each alarm; these are SPDT, rated at 10Amp at 110VAC, and may be latching or non-latching

as required by the application.

They are accessed on the terminals next to each relay see Figure 5. The contact positions are noted on the circuit board next to

each terminal.

The following table is for the relays in their un-energized state. This is also the alarm condition state. Non-failsafe configured

relays in the alarm state, are the reverse of the PC board labeling. Note that the Fault(FLT) relay cannot be set to operate in a

Non-Failsafe mode. Please see Table 1 below:

Table 1 : Relay Failsafe Settings

J14 (K1)Relay 1 - NO Normally Open

Alarm 1

Alarm 2

Alarm 3

Fault Alarm

These relay contacts can be used to operate auxiliary alarms or other functions. The relay contacts are DRY, power must be

supplied. It is recommended that power for auxiliary equipment be supplied from an independent power source separate form

the AM-5175. Use the existing hole in the enclosure for wire to enter and exit and use appropriate cable fittings. Wiring

should be grouped together, VAC wires should be separated for VDC wires.

J14 (K1)Relay 1 - NC Normally Closed J14 (K1)Relay 1 - COM Common

J15 (K2)Relay 2 - NO Normally Open J15 (K2)Relay 2 - NC Normally Closed J15 (K2)Relay 2 - COM Common

J16 (K3)Relay 3 - NO Normally Open J16 (K3)Relay 3 - NC Normally Closed J16 (K3)Relay 3 - COM Common

J17 (K4)Relay 4 - NO Normally Open J17 (K4)Relay 4 - NC Normally Closed J17 (K4)Relay 4 - COM Common

J14, J15, J16, J17

K1, K2, K3, K4

Figure 5: Relay Terminal Connections AM-5175

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AM-5175 ENMET Corporation

AM-5175

The last good calibration values are retained, but the sensor may

5175

312

1256

20.9

0ppm

20.9W

0pp

0ppC

20.9C

4.0 Operation

When the AM-5175 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 detected by the AM-5175. The red alarm and fault LEDs are not lit.

4.1 Start Up AM-5175

When the AM-5175 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 4.1.1 below

4.1.1 Typical Start Up

When power is supplied to the AM-5175, the instrument will display the following sequence of information:

Typical start up sequence of information displayed.

Example of Typical Start Up Display Function

The instrument: Model

The instrument: Serial Number

Example for reference only

S/W X.X

Example for reference only

IF the right most character is a flashing

OTE

Software revision may cause variations of display output.

The instrument: Software Revision

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 has failed Calibration

not be responsive to gas A new Calibration should be performed As Soon As Possible

The instrument: Normal Display Mode Measurement of the target gas

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AM-5175 ENMET Corporation

4.2 Normal Display Mode

When the AM-5175 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 in measurement units of ppm detected by the AM-5175. The red alarm and fault LEDs are not

lit.

To advance through displays of operational information press the M

OTE

Software revision may cause variations of display output.

See sequence of operational information below:

Display Measurement of the target gas

Press M

ENU

button

0ppm

ENU

Select

button.

Display indicates Alarm 1 Set point

Press M

Display indicates Alarm 2 Set point

Press M

Display indicates Alarm 3 Set point

Press M

Display indicates mA Span range

(Full Scale)

Press M

Display returns to gas measurent

ENU

button

A1: 05

A2: 10

A3: 20

mA: 50

Select

Press S

To temporally disable audio alarm, see Section 4.2.1

ELECT

button

Operational Display Flow Chart

4.2.1 Alarm Conditions AM-5175

There are three alarm set points available. These alarm points are normally set at established safety levels, such as the OSHA

Permissible Exposure Limit (PEL) for toxic gases.

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, the associated relay changes

state, and the audio alarm is activated.

Pressing the S

second alarm condition occurs during this time the horn will re-activate. If the alarm condition(s) have ended during this time

the horn will not re-activate.

ELECT

button can temporally disable the Audio Alarm. The horn will be disabled for about five minutes. If a

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AM-5175 ENMET Corporation

Exit

5.0 Maintenance

The AM-5175 maintenance menus are accessed by pressing the M

maintenance menu section.

5.1 Maintenance Menus

AUTION

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

forced into a calibration fault mode.

Pushbutton switches control the M

display panel, see Figure 1. The M

numbers such as alarm points, calibrations gas, etc. The S

To enter the maintenance menu press and hold the M

ENU

and S

ELECT

functions. The M

ENU

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

ELECT

ENU

button for 2 to 4 seconds

Table 2 indicates the maintenance menu sequence see Figure 6 for a detailed maintenance menu flow chart.

OTE

Software revision may cause variations of display output.

Table 2: AM-5175 Maintenance Menus Sequence

Example of Display Function

5ppm

Normal Display Mode

Press and hold the M

ENU

button for 2 – 4 seconds to enter the Maintenance Menu

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

Press the M

ENU

button to advance to the Zero procedure

Not Present for Oxygen Units

Zero

ENU

button and S

ENU

and S

ELECT

button as described in the

ELECT

button locations are indicated on the

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

Measurement of CO

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

If intended function Press S

ELECT

button

For adjusting Zero: If intended function Press S

ELECT

button

Press the M

ENU

Span

Press the M

ENU

Alarm1

Press the M

Pressing the M

You must Press the S

ENU

mA Span

ENU

button without pressing the S

button to advance to the Span procedure

For adjusting the Span: If intended function Press S

button to advance to each Alarm set point procedures

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

Alarm2

Alarm3

button to advance the mA Span set point procedure

For adjusting the mA Span set point: If intended function Press S

ELECT

button will allow you to cycle through the menu options.

ELECT

button in order to initiate the desired operation.

ELECT

button

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AM-5175 ENMET Corporation

SetTD

sec

Alarm3

SetTD

sec

SetTD

sec

Alarm2

the Zero signal is not within Preset Specs the AM

5175 will

display Bad ZERO

Bad ZERO

5175 will display

PV:

Apply

Cal OK

Same mV

Bad Sens

Span

Hold

Select

mA Span

OTE

Software revision may cause variations of display output.

5ppm

Exit

Zero

Not Present for Oxygen Units

Press and Hold the Menu button for 2 – 4 seconds to enter the Maintenance Menus

Press the Menu button to cycle through Maintenance Menus

Alarm1

Normal Gas Display

Select

Press the Select button to return to the Normal Gas Display. See Section 5.2.1

Cal OK

Select

ELECT

Select

Press the Select button to initiate Zero adjustment

the Zero signal is within Preset Specs the AM-

Cal OK, See Section 5.2.2

Select

You can Press and

the

change the Calibration Gas Level

See Section 5.2.3

Cal Gas until signal value becomes stable

(about 1 to 4 minutes) See Figure 6 Press Select to enter the cal signal:

If cal is good display will indicate OK or Same If cal is not within preset “range” display will

indicate Bad Sens

button to

ENU

Select

return to Normal Gas Display: Press M Then press S

ENU

button until EXIT is displayed

ELECT

button

ELECT

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

The M

ENU

cursor The S

To change mA Span set point: Press Menu button until mA Span is displayed Press Select button to display the set point

The Menu button changes digit indicated by underscore cursor The Select button locks underscored digit and moves to next digit

See Section 5.2.5

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 See Section 5.2.4 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

Figure 6: AM-5175 Maintenance Menu Flow Chart

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AM-5175 ENMET Corporation

Select

Sensor

Gas Cylinder

egulator

To Attach Calibration Cup:

Retaining Posts

5.2 Calibration of the AM-5175

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

Initial Calibration: Wait at least 3 – 4 hours after initially supplying power to the AM-5175 instrument before initial calibration, overnight is preferred. The AM-5175 has been pre-calibrated 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 pushbuttons from outside the enclosure through the

and

SELECT

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 AM-5175 instrument. Calibration equipment is available from ENMET Corporation to calibrate the AM-5175 instrument.

• Calibration adapter, a length of tubing with a regulator for the gas cylinder on one end, and a calibration cup to connect to

the sensor of the AM-5175 on the other.

• Gas cylinder, Zero gas 20.9% oxygen or Span gas, factory determined, varies by intent.

Generally, a cylinder of 20.9% Oxygen is used to provide a Zero point or fresh air reference for the calibration.

OTE

Software revision may cause variations of display output.

switches.

Calibration Cup

Front View,

2 places

Attaching Calibration Cup

Slide Down over the retaining posts

To Remove Calibration Cup:

Slide Cup Up off the retaining posts

Side View,

2 places

Attaching Calibration Cup

Calibration Cup

Front View

Side View

with Cal Cup attached

with calibration Adapter

Figure 7: Calibration Adapter

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AM-5175 ENMET Corporation

Example of Exit menu:

Example of Zero adjustment display:

Cal OK

Zero

Hold

5.2.1 Exit Maintenance Menu

Exit maintenance, by pressing the Exit appears on the display. Press the S Display.

Exit

Select

Press the Select button to return to the Normal Gas Display.

ELECT

button to return to the instrument Normal Gas

Press the Menu button to cycle through Maintenance Menus

5.2.2 Zero Adjust

Not Present for Oxygen Instruments

The ZERO function must be performed by exposing the AM-5175 instrument to clean fresh air. If the air at the sensor is in question, use a cylinder of 20.9% oxygen to provide a clean air reference.

Enter the maintenance menu by pressing and holding M

ENU

button for 2 to 4 seconds. See Figure 6, AM-5175 Maintenance

Menu flow chart. After entering the maintenance menu, Press the M Press the S

ELECT

button to perform a Zero.

The display will alternate between Zero and PV: To abort Zero function press and hold M Abort? will appear, press S Press the S

ELECT

button to initiate a Zero adjustment.

ELECT

button to return to Zero.

ENU

button until the Zero menu is displayed.

ENU

button for 3 – 4 seconds,

An auto detect sequence is initiated. After 15 seconds, the AM-5175 will monitor the zero reading for stability.

 If the reading stabilizes, within the pre-programmed perimeters, an automatic zero adjustment will be made.

Cal OK appears on the display and in 1 – 2 seconds, display will change to Span. If you wish to Span the sensor press the S If you wish to Exit the maintenance menu, press M

ELECT

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

ENU

button until Exit is displayed, then press S

ELECT

button to return to

the instrument Normal Gas Display

 If the reading does not stabilize, within 255 seconds, the procedure will be aborted. Sensor is outside of safe parameters

to be zeroed, the display will read Bad Zero. Repeat Section 5.2.2 Zero Adjust making sure to use a Zero gas of 20.9% Oxygen. ENMET part number 03296-209.

OTE

. Zero adjust is Not Present for Oxygen Instruments

Zero

Select

PV: 0

Note:

Select

You can Press and

When Abort? appears press Select button to

Select

the

button to abort Zero

return to Zero menu

Abort?

Press the Select button to force Zero adjustment

OTE

Software revision may cause variations of display output.

Bad ZERO

the Zero signal is within Preset Specs the AM-5175 will

display Cal OK momentarily then advance to Span menu

the Zero signal is not within Preset Specs the AM-5175

will display Bad Zero and return to

Zero menu

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AM-5175 ENMET Corporation

Example of Calibration Display:

Apply

cal is not within preset “range” display will indicate Bad Sens

Abort?

5.2.3 Gas Span

It is recommended that the Zero Function be performed first.

Do not perform a calibration unless span gas is applied to sensor. Calibration can be aborted by pressing and holding the M button for 3 – 4 seconds.

Enter the maintenance menu. See Figure 6, AM-5175 Maintenance Menu flow chart.

1. Press the M

2. Press the S

The display will alternate between the calibration gas concentration (Example: Cal 20) and a signal level (PV).

• To Abort calibration press and Hold M to Span.

Note:

To abort calibration. Press and Hold the Menu button to abort Calibration

ENU

button until Span display.

ELECT

button to perform a Span procedure.

ENU

button for 3 – 4 seconds, “Abort?” will appear, press S

When “Abort?” appears press Select button to advance to desired menu

ELECT

button to return

Select

ENU

• To change calibration gas level to be used, press and Hold S

ELECT

button for 3 – 4 seconds, use menu button to change

digit and select button to move to next digit.

Note:

To change calibration gas level. Press and Hold the Select button to change the Calibration Gas Level

Select

-Use the Menu button to change digits

-Use the Select button to move to next digit

3. Attach the associated calibration gas cylinder to the calibration adapter. See Figure 7 calibration adapter.

4. Open the valve to apply the calibration gas to the sensor. An auto detect sequence is initiated after 30 seconds, the AM-5175 will monitor the cal reading for stability.

5. Watch for the signal level to stabilize. This should take about 1 – 4 minutes.

6. Once the signal level has stabilized,

 If the Span is successful, Cal OK appears momentarily, then will advance to Alarm1 menu.

To exit cal, press M

ENU

button until Exit appears and press S

ELECT

button

 If the sensor is outside of acceptable parameters, Bad Span is displayed.  If the sensor did not respond, an incompatible span gas was applied and the sensor did not respond at all,

Same mV is displayed then will return to Span.  If calibration is not successful, it is suggested that calibration be attempted again in 30-60 minutes.

If the sensor will not calibrate See Section 5.3 for sensor replacement.

7. Remove the calibration gas.

8. Press the M

OTE

Software revision may cause variations of display output.

ENU

button to advance to Exit menu or desired menu.

Span

Select

PV: 0

Select

PV: 0

When cal signal is stable AM-5175 will automatically update:

Cal OK

Bad Sens

If cal is good display will indicate OK or Same and advance to

To exit press Menu button until Exit appears and press Select

Same mV

Cal Gas until signal value becomes stable (about 1 to 4

minutes) See Figure 7 Calibration Adapter

Alarm1

or Same mV The AM-5175 will return to the Span Menu

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AM-5175 ENMET Corporation

Example of Alarm Set Point menus:

Example of mA Span menu:

SetTD

sec

Alarm1

SetTD

sec

5.2.4 Alarm Set Points

The AM-5175 has three alarm set points set at the factory. These alarm points are normally set at established safety levels. Alarm set points can be changed within limits.

To change any of the three alarm points: Enter the maintenance menu as shown in Figure 6 AM-5175 Maintenance Menu flow chart.

1. Press the M

2. Press the S

3. Press the M

- Indicates increasing alarm

V - Indicates decreasing alarm

4. Press the S When last digit is entered the AM-5175 will advance to the next menu

Use M Between 0 and 5 seconds is allowed

6. Press the M

OTE

: Alarms 2 and 3 can not be set below the Alarm 1 setting.

ENU

button until to display Alarm1 is displayed.

ELECT

button to initiate alarm set point change

ENU

button to change the digit indicated by the underscore cursor

ELECT

button to move the cursor to the next digit

and S

ELECT

switches as above to change time delay.

ENU

button to advance to the next menu

ELECT

Λ 5

ENU

SetTDsec

Alarm2

ENU

Alarm3

ENU

OTE

Software revision may cause variations of display output.

ELECT

Λ 10

Λ 20

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

The M

ENU

switch: changes digit indicated by underscore cursor The S

ELECT

switch: locks in the underscored digit and

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

ENU

and S

ELECT

switches as above to change time

delay. Between 0 and 5 seconds is allowed If change is within range display moves to next menu

- Indicates increasing alarm

V - Indicates decreasing alarm

5.2.5 mA Span Set

The AM-5175 4-20mA span range is set at the factory, normally to the full scale of the measurement and can be changed within limits.

To change the span range: Enter the maintenance menu as shown in Figure 6 AM-5175 Maintenance Menu flow chart.

1. Press the M

2. Press the S

3. Press the M

4. Press the S When last digit is entered the AM-5175 will advance to the next menu

5. Press the M

mA Span

ENU

button until to display Span is displayed.

ELECT

button to initiate the mA Span menu

ENU

button to change the digit indicated by the underscore cursor

ELECT

button to move the cursor to the next digit

ENU

button to advance to the next menu

Select

To change mA Span set points: Press Menu button until mA Span is displayed Press Select button to display the set point

The Menu button changes digit indicated by underscore cursor The Select button locks underscored digit and moves to next digit

Page 17

AM-5175 ENMET Corporation

Sensor PC Board

Shorting Clip

5.3 Sensor Replacement

ARNING

Power must be removed from the AM-5175 before this or any internal procedure. Failure to do so may cause

damage to equipment, bodily injury or death.

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 AM-5175 serial number available when contacting your distributor or ENMET Corporation technical Support.

ENSOR REPLACEMENT PROCEDURE

1. Obtain a new sensor. Make sure the sensor type is identical to your original sensor.

2. Disconnect the instrument for power.

3. Remove the 2 Sensor PC board retaining screws.

4. Unplug the sensor from the PC Board. See Figure 8

5. Plug the new sensor into the PC Board. See Figure 8

OTE

: If a shorting clip is present, remove the clip before plugging in the new sensor.

6. Replace the Sensor PC board and 2 retaining screws.

7. Reconnect the instrument to power.

8. Recalibrate the instrument (See Section 5.2).

Retaining Screws

2 places

Sensor PC Board

Sensor

Step 4. unplug sensor

If present

Step 5.Remove clip if necessary

Plug in new sensor

Figure 8: AM-5175 Sensor Replacement

After the sensor has been installed, it is suggested to allow the sensor to stabilize for at least 3 – 4 hours, preferably over night.

5.3.1 A Factory calibration must be performed.

After entering the Maintenance menu, press and hold 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.

ENU

button for 2-4 seconds while viewing the Zero menu.

Page 18

AM-5175 ENMET Corporation

6.0 Accessory and Replacement Parts

ENMET accessory part numbers:

Part number Description

03620-022 Calibration Cup 04834-004 Calibration Regulator Assembly for Steel Cylinder 03219-100 Gas Cylinder, 100 ppm CO in air, (34 Liter, Steel Cylinders) 03296-209 Gas Cylinder, Zero Gas, 20.9% oxygen in nitrogen, (34 Liter, Steel Cylinders) 04834-001 Calibration Regulator Assembly for Aluminum Cylinder 03314-020 Gas Cylinder, 20 ppm H2S in N2 , (34 Liter, Aluminum Cylinders)

67028-0200 Sensor H2S 67028-1100 Sensor O2 67028-1200 Sensor CO

73083-000 Carry Case

7.0 Technical Data and Specifications

Electrical Power

Operation

Mechanical

Outputs

OTE

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

15 Amp fused branch circuit 100-240 VAC

0.45A, 50/60 Hz

0.6A, 24VDC Temperature:

Relative Humidity

Dimensions: Weight: Material:

Strain relief: Relays:

Analog: Digital: Audio:

-20° to +40°C (-4° to +104°F) 10-99% RH, non-condensing

7.1 x 5.1 x 3 in(180x130x75mm) 2 lbs (0.9 kg) Polycarbonate

3 - 6.5mm OD SPDT

Resistive Load Inductive Load 10A at 110 VAC 7.5A at 110 VAC 10A at 30 VDC 5A at 30 VDC 4-20mA RS-485-modbus 105 dB at 30cm/12in

Page 19

AM-5175 ENMET Corporation

8.0 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 that 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 80003-551

October 2007 MCN-408, 11/18/08 MCN-421, 04/28/09 MCN-14-003, 03/20/14

Notes:

Page 20

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 21

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: $_________________