ENMET AM-5150 Manual

ENMET

680 Fairfield Court

Ann Arbor, MI 48108

734.761.1270 Fax 734.761.3220 www.enmet.com

AM-5150

Ambient Air Monitor

Operation and Maintenance Manual

AM-5150 ENMET

Table of Contents

1.0

I NTRODUCTION

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

1.1 Unpack ............................................................................................................................................................................................. 3

1.2 Check Order ..................................................................................................................................................................................... 3

1.3 Serial Numbers................................................................................................................................................................................. 3

2.0

C OMPONENTS OF THE AM-5150 ........................................................................................................................................... 4

2.1 AM-5150 elements ........................................................................................................................................................................... 4

2.2 AM-5150 Operational Features........................................................................................................................................................ 4

2.3 Circuit Board Features ..................................................................................................................................................................... 5

3.0

I NSTALLATION OF THE AM-5150 .......................................................................................................................................... 6

3.1 Mounting AM-5150 ......................................................................................................................................................................... 6

3.1.1 Wiring the AM-5150 ....................................................................................................................................................................................... 6

3.1.2 Power Supply .................................................................................................................................................................................................. 6

3.2 Sensor Location ............................................................................................................................................................................... 7

3.3 Relay Contacts ................................................................................................................................................................................. 9

4.0

O PERATION ....................................................................................................................................................................... 10

4.1 Start Up AM-5150 ......................................................................................................................................................................... 10

4.1.1 Typical Start Up ............................................................................................................................................................................................ 10

4.2 Normal Display Mode .................................................................................................................................................................... 11

4.2.1 Alarm Conditions AM-5150 .......................................................................................................................................................................... 11

5.0

M AINTENANCE

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

5.1 Maintenance Menus ....................................................................................................................................................................... 12

5.2 Calibration of the AM-5150 ........................................................................................................................................................... 14

5.2.1 Exit Maintenance Menu ................................................................................................................................................................................ 15

5.2.2 Zero Adjust.................................................................................................................................................................................................... 15

5.2.3 Gas Span ....................................................................................................................................................................................................... 16

5.2.4 Alarm Set Points ........................................................................................................................................................................................... 17

5.2.5 mA Span Set .................................................................................................................................................................................................. 17

5.3 Sensor Replacement ....................................................................................................................................................................... 18

5.3.1 Sensor Replacement Calibration................................................................................................................................................................... 19

6.0

A CCESSORY AND R EPLACEMENT P ARTS ............................................................................................................................. 20

7.0

T ECHNICAL D ATA AND S PECIFICATIONS ............................................................................................................................. 20

8.0

T ERMS AND C ONDITIONS ................................................................................................................................................... 22

8.1 Ordering Information ..................................................................................................................................................................... 22

8.2 Delivery ......................................................................................................................................................................................... 22

8.3 Payment Terms .............................................................................................................................................................................. 22

8.4 Warranty Information and Guidelines ........................................................................................................................................... 22

8.5 Return Policy ................................................................................................................................................................................. 22

9.0

I NSTRUCTIONS FOR R ETURNING AN I NSTRUMENT FOR S ERVICE ........................................................................................... 23

Manual Revision Date – June 15, 2017

Manual Part No. – 80003-550

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AM-5150 ENMET

List of Figures

Figure 1: External AM-5150 Features .............................................................................................................................................................................. 4

Figure 2: AM-5150 Circuit Board Features ...................................................................................................................................................................... 5

Figure 3: Mounting AM-5150 .......................................................................................................................................................................................... 6

Figure 4: Power Terminal Connections AM-5150............................................................................................................................................................ 7

Figure 5: Internal View of Sensor Wiring ........................................................................................................................................................................ 8

Figure 6: Relay Terminal Connections AM-5150 ............................................................................................................................................................ 9

Figure 7: AM-5150 Maintenance Menu Flow Chart ...................................................................................................................................................... 13

Figure 8: Calibration Adapter ......................................................................................................................................................................................... 14

Figure 9: AM-5150 Sensor Replacement ....................................................................................................................................................................... 18

List of Tables

Table 1: Relay Failsafe Settings ....................................................................................................................................................................................... 9

Table 2: AM-5150 Maintenance Menu Sequence .......................................................................................................................................................... 12

Reference Information:

N OTE : [important information about use of instrument]

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

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

! Attention / Warning

Earth Ground



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AM-5150

1.0 Introduction

ENMET

The AM-5150 is an ambient air monitoring instrument that measures and detects gases utilizing a non-specific MOS sensor. The AM-

5150 is NOT in an enclosure rated for use in a Class I, Div. 1, Groups B, C, D classified area and cannot be installed in a hazardous location. However, the remote sensor housing and sensor are rated for Class I, Div. 1, Groups A, B, C & D hazardous locations and may be installed in such locations with appropriate wiring.

Features of the AM-5150:

 continuous monitoring of the ambient air and 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

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

1.1 Unpack

Unpack the AM-5150 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

N 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 ENMET 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: o 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. o 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. Please 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

680 Fairfield Court

Ann Arbor, MI 48108

734-761-1270 Fax 734-761-3220

Toll Free: 800-521-2978

1.2 Check Order

Check, the contents of the shipment against the purchase order. Verify that the AM-5150 is received as ordered. Each AM-5150 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-5150 is serialized. These numbers are on tags on the equipment and are on record in an ENMET database.



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AM-5150

2.0 Components of the AM-5150

2.1 AM-5150 elements

See Figure 1 for location of elements:

Feature Description

ENMET

Enclosure

Front Cover

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-5150 with Display Panel. See Section 2.2 and Figure 1

There are 4 Screws that hold the front cover in place.

2.2 AM-5150 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.


Display

Audio Alarm(Horn)

Visual:

Indicators and Alarms

Membrane Switches

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 control the instrument maintenance functions. The pushbutton switch locations are indicated by:

M ENU

↓

: Advances the instrument display through operation information and maintenance menus

S 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-5150 . 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.

Visual Indicator

Power/Fault

Visual Indicators:

Alarm1, Alarm2, Alarm3

Sensor/Remote Sensor

Wiring Access

Menu Select

Pushbutton/Membrane

Switches

Audio Alarm

Front Cover

Retaining Screws

4 places

Power Wiring

Strain Relief

Figure 1: External AM-5150 Features



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AM-5150 ENMET

2.3 Circuit Board 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. The Circuit Board is mounted at the back surface of the enclosure interior. Features are shown in Figure 2 .


Relay Terminals:

J14, J15, J16, J17

Terminal J12

Sensor Terminal J8

Data Terminal J19

Potentiometer 4

Potentiometer 2 & 3

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 V DC 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

Sensor heater voltage adjustment, See Section 3.2.1

Not used in AM-5150 Do Not Adjust

RS-485 Input/ Output

Terminal J19

POT 2

Relay Terminals

J14, J15, J16, J17

Relays

K1, K2, K3, K4

Terminal J12

DC Power In

4-20mA Output

Sensor Connection

Terminal J8

POT 3

Sensor Heater Voltage

Adjustment POT 4

Figure 2: AM-5150 Circuit Board Features



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AM-5150

3.0 Installation of the AM-5150

ENMET

The AM-5150 is supplied with a strain relief for a power line cord. Use this fitting or connect a conduit fitting when supplying power to the unit.

N OTE : This control panel is N OT rated for hazardous locations. The control panel must be in a Non-Hazardous area.

3.1 Mounting AM-5150

Mount the AM-5150 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-5150 to a drywall/sheetrock surface.

Right Side View

Figure 3: Mounting AM-5150

3.1.1 Wiring the AM-5150

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

States.

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

The AM-5150 should be powered through circuit breakers provided for this purpose.

3.1.2 Power Supply

The input power can vary from 100 to 240 V AC , 50/60 Hz. Power should be connected to the Power Input Terminal TB1 and the Ground screw . Se e Figure 4 for location.

For DC wiring 24V DC may be wired to J12, (J12-1) position 1 + with ground connected to (J12-2) position 2.

Upon supplying power to the AM-5150 :

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

W ARNING : Continuous gas detection and alarm systems (110V AC /220V AC / 24V DC /12V DC powered) become inoperative upon loss of

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



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AM-5150

AC Power Supply Terminal: TB1

Label on PCB

110V AC TB1 ACN

TB1 ACL

Ground

Screw

220V AC TB1 ACN

Optional TB1 ACL

Ground

Screw

C AUTION : 110/220 V AC when applied

DC Power Supply/4-20mA

Terminal: J12

Function

Neutral

Line

AC GND

Neutral

Line

AC GND

Position

1 +

2

3

Function

24 V DC power

GND

4 - 20 mA out

Sensor Terminal: J8

Position Function

1

2

3

Heater Orange

Color

Signal Blue

Ground 2 wires, Brown &

Yellow

Cover Inside View

Opened Upward

ENMET

Sensor Heater Voltage Label

Sensor Heater Voltage

Adjustment POT 4

Figure 4: Power Terminal Connections AM-5150

3.2 Sensor Location

Gases have different densities. Some are heavier than air and concentrate at the bottom of a space. Some are lighter than air and gather at the top. Consider the density of the gas you want the sensor to detect when you install the sensor. Some examples are given below.

Heavier than Air Gas Sensor Location

Bottled LP (liquefied petroleum)

Propane

Butane

Gasoline

Trichloroethylene

Vaporized hydrocarbons

Hydrogen sulfide

Lighter than Air Gas

Natural gas (methane)

Ammonia

Hydrogen

Same Density as Air Gas

Carbon Monoxide

Interior wall; 18-24" from floor.

D O N OT locate directly above or beside gas appliances (ovens, heaters).

Avoid locating anywhere near a vent or window or near an outside doorway.

Sensor Location

Near ceiling.

D O N OT locate directly above appliances where it is subject to direct exposure to heat or steam.

Sensor Location

4-6 feet above the (generally uniform) floor.

D O N OT locate in direct air currents of windows, doors, or vents.

If you have a question involving the location of a unit or sensor, please contact your distributor or ENMET personnel. A technician will analyze the question and recommend a location.



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AM-5150 ENMET

3.2.1 Sensor Hook-up

The MOS sensor is connected to the AM-5150 control unit with four-conductor wiring, use the correct oil tight fitting. Two conductors supply heater voltage and heater ground for the sensor. The third and fourth conductors are signal and signal ground wires. Size of the wire depends on the distance between the sensor and the control unit.

Sensor Type

High Voltage:

812, 813, 826, etc.

Low Voltage: 109

Recommended Wire Gauge

Distance from Sensor to Control Unit

≤

500 feet

501 – 800 feet

Longer Distances

≤

50 feet

Longer Distances

Recommended Wire Gauge

16 AWG

14 AWG

Contact ENMET Corp

16 AWG

Contact ENMET Corp

Optional

Splash Shield

Wiring for 4-wire Terminal Sensors

Position

1

2

3

4

Function

Heater

Signal

Heater Ground

Signal Ground

Wire Color

Orange

Blue

Brown

Yellow

Optional

Splash Shield

Wiring for 3-wire Terminal Sensors

Position Function

1

2

Heater

Signal

3 Heater Ground

Wire Nut Signal Ground

Wire Color

Orange

Blue

Brown

Yellow

N OTE : The yellow signal wire is not connected to the terminal block, use supplied wire nut.

Sensor Wiring Terminal*

The 4 th

(yellow) wire is not connected to the terminal block, use supplied wire nut

Figure 5: Internal View of Sensor Wiring

Wire length between the AM-5150 and the sensor greater then 100ft will require that the sensor heater voltage be reset. After you mount and install the AM-5150 and Sensor, you must verify the sensor heater voltage. Use position 2 and 3 to measure heater voltage.

Locate the sensor heater voltage table label inside the instrument, see Figure 4 . Measure the sensor heater voltage at the sensor, see Figure 5 and adjust the heater adjustment POT 4 until required voltage is reached, see Figure 4 .



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AM-5150 ENMET

3.3 Relay Contacts

Relay contacts are available for each alarm; these are SPDT, rated at 10Amp at 110V AC , and may be latching or non-latching as required by the application.

They are accessed on the terminals next to each relay see Figure 6 . 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

Alarm

Alarm 1

Alarm 2

Alarm 3

Fault Alarm

Position

J14 (K1) Relay 1 - NO Normally Open

J14 (K1) Relay 1 - NC Normally Closed

J14 (K1) Relay 1 - COM Common










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 from the

AM-5150 . Use the existing hole in the enclosure for wire to enter and exit and use appropriate cable fittings. Wiring should be grouped together, V AC wires should be separated for V DC wires.

Relay Terminals

J14, J15, J16, J17

Relays

K1, K2, K3, K4

Sensor Terminal J8

Figure 6: Relay Terminal Connections AM-5150



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AM-5150

4.0 Operation

ENMET

When the AM-5150 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-5150 .

The red alarm and fault LEDs are not lit.

4.1 Start Up AM-5150

When the AM-5150 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 the momentary screens have been displayed, the instrument arrives at the

Main Gas Display showing the gas concentration and unit of measurement, ppm or %LEL. 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-5150, the instrument will display the following sequence of information:

Typical start up sequence of information displayed.

Example of Typical Start Up Display Function

AM-5150

The instrument: Model AM-5150

Example for reference only The instrument: Serial Number

311- 20

Example for reference only

S/W 6.6F

The instrument: Software Revision

IF the right most character is a flashing W

0ppW

The instrument is in Warm-up mode

This should last about 1 minute

The Signal Output is held at 4mA during warm-up

IF the right most character is a flashing C

0ppm

OR

0ppC

0LEL

The instrument has failed Calibration

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

0ppm

0ppm

The instrument: in Purge Mode Display

0ppP

Optional feature , not required in all instruments

The instrument: in Recovery Mode Display

0ppR

Optional feature , associated with purge mode

N OTE : Software revision may cause variations of display output.

Prolonged storage of the AM-5150-MOS may result in some contamination of the sensor. Following start up, if the display reads above 000 a sensor purge function should be performed.

Sensor Purge: A sensor purge is performed to clean the MOS sensor (Metal Oxide Sensor) of molecules that may have settled on the sensor.

N OTE : Not all instruments are equipped with or require the Purge feature.

To determine if the purge feature is operational, press and hold the S ELECT switch, 3 to 5 seconds, if purge feature is operational 0ppP appears in the display. If the AM-5150-MOS is equipped with the purge feature, the display will alternate between 0ppm and 0ppP and the green Power/Fault LED will flash. In approximately 2 minutes the purge function will be completed and the display will, alternate between 0ppm and 0ppR indicating the instrument is in recovery mode. Recovery mode lasts approximately 5 minutes. When the purge cycle is complete, the display will become stable at 0ppm and the green

Power/Fault LED will stop flashing.



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AM-5150 ENMET

4.2 Normal Display Mode

When the AM-5150 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 or %LEL detected by the AM-5150 .

The red alarm and fault LEDs are not lit.

To advance through displays of operational information press the M ENU button.


See sequence of operational information below:

Display Measurement of the target gas

Press M ENU button 0ppm S ELECT

M

ENU

Display indicates Alarm 1 Set point

Press M ENU button


Press M ENU button


Press M ENU button

A1:

M

ENU

05

A2:

M ENU

10

A3:

M ENU

20

S ELECT

S ELECT

S ELECT

Press S ELECT button

To temporally disable audio alarm, see Section 4.2.1

Display indicates mA Span range

(Full Scale)

Press M ENU button

Display returns to gas measurent mA: 50 S ELECT

M ENU

Operatio nal Display Flo w Chart

4.2.1 Alarm Conditions AM-5150

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 or recognized standards below the Lower Explosive Limit for combustible gases.

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



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AM-5150

5.0 Maintenance

ENMET

The AM-5150 maintenance menus that are accessed by pressing the M ENU button and S ELECT button as described in the maintenance menu section.

5.1 Maintenance Menus

Pushbutton switches control the M ENU and S ELECT functions. The M ENU and S ELECT button locations are indicated on the display panel, see Figure 1.

The M ENU button is used to display the various menu options and make incremental changes to numbers such as alarm points, calibrations gas, etc. The S ELECT button is used to select that option, set zero or span digit.

To enter the maintenance menu, press and hold the M ENU button for 2 to 4 seconds

Table 2 indicates the maintenance menu sequence see Figure 7 for a detailed maintenance menu flow chart.

C 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.


Table 2: AM-5150 Maintenance Menu Sequence

Example of Display Function

Normal Display Mode

5ppm

Measurement of CO

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-5150 is in Maintenance Mode

Exit

To exit the maintenance Menu and return to the

Normal Display Mode:

If intended function Press S ELECT button

Press the M ENU button to advance to the Zero procedure

Zero

For adjusting Zero:


Press the M ENU button to advance to the Span procedure

Span

For adjusting the Span:


Press the M ENU button to advance to each Alarm set point procedures

Alarm1

Alarm2

For adjusting the Alarm 1, 2 and 3 set points:

If Intended function, press S ELECT button.

Alarm3

Press the M ENU button to advance the mA Span set point procedure mA Span

For adjusting the mA Span set point:


Pressing the M ENU button without pressing the S ELECT button will allow you to cycle through the menu options.

You must Press the S ELECT button to initiate the desired operation.



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AM-5150


Normal Gas Display

5ppm

M ENU

Press and H

OLD

the M

ENU

button for 2 – 4 seconds to enter the Maintenance Menus

Exit

S ELEC T Press the S ELECT button to return to the Normal Gas Display. See Section 5.2.1

Zero

M ENU

Press the M

ENU

button to cycle through Maintenance

S ELECT

PV: 0

S ELECT

Press the S

ELECT

button to initiate Zero

Span

M ENU

M ENU

OR

S ELECT

Cal OK

Bad ZERO

PV: 0

20

If the Zero signal is within Preset Specs the AM-5150 will display

Cal OK, See Section 5.2.2

If the Zero signal is not within Preset Specs the AM-5150 will display Bad ZERO

S ELECT

You can Press and H

OLD

the S

ELECT

button to change the Calibration Gas Level

See Section 5.2.3

S ELECT

Apply Cal Gas until signal value becomes stable

(about 1 to 4 minutes) See Figure 8 Cal OK

OR

Same mV

OR

Bad Sens

Press S

ELECT

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 Sensor

Alarm1

S ELECT

5

M ENU

Alarm2

M ENU

Alarm3

S ELECT

S ELECT

5

10

10

20

To change Alarm set points:

Press Menu button until Alarm to be changed is displayed

Press Select button to display the set point

The M

ENU

button changes digit indicated by underscore cursor

The S ELECT button locks 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 next menu


M ENU

ENMET

mA Span

M ENU

S ELECT

0050

To change mA Span set point:

Press Menu button until mA Span is displayed


The M ENU button changes digit indicated by underscore cursor



To return to Normal Gas Display:

Press M

ENU

button until EXIT is displayed

Then press S

ELECT

button

Figure 7: AM-5150 Maintenance Menu Flow Chart



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AM-5150 ENMET

5.2 Calibration of the AM-5150

Sensor Purge: Prior to calibration some MOS (Metal Oxide Sensor) sensor should be purged. A sensor purge is performed to clean the MOS sensor of molecules that may have settled on the sensor.

Press and hold the S ELECT switch, 3 to 5 seconds, if the purge feature is operational 0ppP appears in the display. If the AM-5150-

MOS is equipped with the purge feature, the display will alternate between 0ppm and 0ppP and the green Power/Fault LED will flash. Example of purge display

0ppm 0ppP

In approximately 2 minutes the purge function will be completed and the display will, alternate between 0ppm and 0ppR indicating the instrument is in recovery mode. Recovery mode lasts approximately 5 minutes.

Example of purge recovery display

0ppm 0ppR

When the purge cycle is complete, the display will become stable at 0ppm and the green Power/Fault LED will stop flashing.

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-5150 instrument before initial calibration, overnight is preferred. The AM-5150 has been pre-calibrated at the factory, and initial field calibration should result in only finetuning to circuit, as well 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 MENU and SELECT switches.

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 recommends at least quarterly calibration of the AM-5150 instrument .

Calibration equipment is available from ENMET to calibrate the AM-5150 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-5150 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.


Menu Select

To Cal Cup

To Regulator

Top View of Humidifier

Calibration Cup

Sensor

Humidifier

Sensor

Enclosure



Figure 8: Calibration Adapter

Regulator

Gas Cylinder

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AM-5150 ENMET

5.2.1 Exit Maintenance Menu

Exit maintenance, by pressing the Exit appears on the display. Press the S ELECT button to return to the instrument Normal Gas

Display.

Example of Exit menu:

Exit

S ELECT

Press the S

ELECT

button to return to the Normal Gas Display.

M ENU

Press the M

ENU

button to cycle through Maintenance Menus

5.2.2 Zero Adjust

The ZERO function must be performed by exposing the AM-5150 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 7, AM-5150 Maintenance

Menu flow chart.

After entering the maintenance menu, Press the M ENU button until the Zero menu is displayed.

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 ENU button for 3 – 4 seconds,

Abort? will appear, press S ELECT button to return to Zero.

Press the S ELECT button to initiate a Zero adjustment.

An auto detect sequence is initiated. After 15 seconds, the AM-5150 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 ELECT button you are now ready to apply gas. Proceed to gas span step 2

If you wish to Exit the maintenance menu, press M 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.

Example of Zero adjustment display:

S ELECT

Zero

PV:

M ENU

Note: You can Press and H OLD the M ENU button to abort Zero

When “Abort?” appears, press S ELECT button to

S ELECT return to Zero menu

0

Abort?

S ELECT

Press the S

ELECT

button to force Zero adjustment

M ENU

Zero

Cal OK

OR

Bad ZERO

If the Zero signal is within Preset Specs the AM-5150 will display Cal OK momentarily then advance to Span menu

If the Zero signal is not within Preset Specs the AM-5150 will display Bad Zero and return to Zero menu




P a g e | 15

AM-5150 ENMET

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 ENU button for 3 – 4 seconds.

Enter the maintenance menu. See Figure 7, AM-5150 Maintenance Menu flow chart.

1. Press the M ENU button until Span display.

2. Press the S ELECT button to perform a Span procedure.

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

•

To Abort calibration press and Hold M ENU button for 3 – 4 seconds, “Abort?” will appear, press S ELECT button to return to Span.

N

OTE

:

To abort calibration. Press and H OLD the M ENU button to abort Calibration

M ENU

When “Abort?” appears, press S ELECT button to advance to desired menu

Abort?

S ELEC T

•

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.

N

OTE

:

To change calibration gas level. Press and H OLD the S ELECT button to change the Calibration Gas Level

S ELECT

-Use the M ENU button to change digits

-Use the S ELECT

button to move to next digit

20

3. Attach the associated calibration gas cylinder to the calibration adapter. See Figure 8 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-5150 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 ENU button to advance to Exit menu or desired menu.


Example of Calibration Display:

Span

S ELECT

PV: 0

S ELECT

M ENU

PV:

Cal OK

Bad Sens

OR

Same mV

0

20

Apply Cal Gas until signal value becomes stable

(about 1 to 4 minutes) See Figure 8 Calibration

Adapter

When cal signal is stable AM-5150 will automatically update:

If cal is good display will indicate OK or Same and advance to Alarm1

If cal is not within preset “range” display will indicate

Bad Sensor Same mV the AM-5150 will return to the

Span Menu

To exit press M ENU button until Exit appears and press

S ELECT



P a g e | 16

AM-5150 ENMET

5.2.4 Alarm Set Points

The AM-5150 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 7 AM-5150 Maintenance Menu flow chart.

1.

Press the M ENU button until to display Alarm1 is displayed.

2.

Press the S ELECT button to initiate alarm set point change

3.

Press the M ENU button to change the digit indicated by the underscore cursor

4.

Press the S ELECT button to move the cursor to the next digit

When last digit is entered the AM-5150 will advance to the next menu

5.

Press the M ENU button to advance to the next menu

N OTE : Alarms 2 and 3 cannot be set below the Alarm 1 setting.

Example of Alarm Set Point menus:

Alarm1 S ELECT

5

M ENU

Alarm2

M

ENU

Alarm3

S ELECT

S ELECT

5

10

10

20

To change Alarm set points:

Press Menu button until Alarm to be changed is displayed



The S

ELECT

button locks underscored digit and moves to next digit

If change is not within range display returns to previous digit

If change is within range display moves to next menu

M ENU


5.2.5 mA Span Set

The AM-5150 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 7 AM-5150 Maintenance Menu flow chart.

1.

Press the M ENU button until to display Span is displayed.

2.

Press the S ELECT button to initiate the mA Span menu

3.

Press the M ENU button to change the digit indicated by the underscore cursor

4.

Press the S ELECT button to move the cursor to the next digit

When last digit is entered the AM-5150 will advance to the next menu

5.

Press the M ENU button to advance to the next menu

Example of mA Span menu:

mA Span

S ELECT

M ENU

0200

To change mA Span set points:

Press Menu button until mA Span is displayed




Default mA Span

4mA 20mA

0 ppm 200 ppm



P a g e | 17

AM-5150 ENMET

5.3 Sensor Replacement

The MOS sensor is durable, it can be purged of contaminants by operating in PURGE for a sufficient length of time and at regular intervals.

Gross contamination usually occurs during unavoidable misuse. Close exposure to an open gas flame, submersion of the sensor in a liquid, or continuous exposure to heavy concentrations of industrial vapors will grossly contaminate a sensor. A grossly contaminated sensor causes a continuous alarm.

If a sensor fails to calibrate, replace it.

P ROCEDURE :

W ARNING : Power must be removed from the AM-5150 before this or any internal procedure. Failure to do so may cause damage

to equipment, bodily injury or death.

1.

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

Sensor marking is on side of sensor see Figure 9

( Example : 813-4 the first 3 digits are sensor ID the 4 digit indicates a 4-wire sensor).

2.

Disconnect the instrument for power.

3.

Disconnect the orange, brown, blue and yellow sensor wires.

4.

Unscrew the assembly from the sensor enclosure.

5.

Remove the bad sensor.

6.

Replace with the new sensor and reconnect the wires (See Section 3.2.1).

N OTE : The user must perform the four color-coded wiring attachments when replacing the sensor. If the yellow signal wire is not connected to the terminal block, use supplied wire nut.

7.

Reconnect the instrument to power and verify sensor heater voltage. (See Section 3.2.1)

8.

Recalibrate the instrument (See Section 5.3.1).

Spacer Ring

*Replace facing direction as shown

Optional Splash Shield

Standard Sensor Shield

View of 4-wire Terminal

Sensor

View of 3-wire Terminal

Figure 9: AM-5150 Sensor Replacement

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



P a g e | 18

AM-5150 ENMET

5.3.1 Sensor Replacement Calibration

Sensor Purge: Prior to calibration some MOS (Metal Oxide Sensor) sensor should be purged. A sensor purge is preformed to clean the MOS sensor of molecules that may have settled on the sensor.

Press and hold the S ELECT switch, 3 to 5 seconds, if the purge feature is operational 0ppP appears in the display. If the AM-

5150-MOS is equipped with the purge feature, the display will alternate between 0ppm and 0ppP and the green Power/Fault

LED will flash. Example of purge display

0ppm 0ppP

In approximately 2 minutes the purge function will be completed and the display will, alternate between 0ppm and 0ppR indicating the instrument is in recovery mode. Recovery mode lasts approximately 5 minutes.

Example of purge recovery display

0ppm 0ppR

When the purge cycle is complete, the display will become stable at 0ppm and the green Power/Fault LED will stop flashing.

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-5150 instrument before initial calibration, overnight is preferred. The AM-5150 has been pre-calibrated at the factory, and initial field calibration should result in only fine-tuning to circuit, as well 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 MENU and SELECT switches.

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 recommends at least quarterly calibration of the AM-5150 instrument .

Calibration equipment is available from ENMET to calibrate the AM-5150 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-5150 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.


After entering the Maintenance menu, press and hold the M ENU button for 2-4 seconds while viewing the Zero menu.

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.



P a g e | 19

AM-5150

6.0 Accessory and Replacement Parts

ENMET accessory part numbers:

Description of Part Part Number

ENMET

Sensor Marking, 109-4








Zero Gas, 20.9% O2, 17 liters

Span Gas

Cylinder of Calibration Gas

03034-109

03034-812

03034-813

03034-018

03034-019

03034-821

03034-830

03034-832

03296-209

Contact ENMET for part number of target gas for each instrument.

See note below.

N OTE : The gases should be identical, or equivalent (correlation gas) to those used to initially calibrate the unit, unless you want to recalibrate to a new gas or different concentration. In addition, calibration gases must be in a background of air; do not use gases with an inert gas background (such as nitrogen or argon).

7.0 Technical Data and Specifications

Electrical Power

Storage and Transport

Operation

15 Amp fused branch circuit

100-240 V AC

0.45A, 50/60 Hz

0.6A, 24V DC

Temperature: preferred

Relative Humidity

Atmospheric Pressure

Temperature:

Relative Humidity

Atmospheric Pressure

-20

°

to +60

°

C (-4

°

to +140

°

F)

0

°

to +20

°

C (32

°

to 68

°

F)

10-99% RH, non-condensing

20 to 36 inHg (68 to 133 kPa)

-15

°

to +40

°

C (5

°

to +104

°

F)

10-99% RH, non-condensing

20 to 36 inHg (68 to 133 kPa)

Mechanical

Outputs

Dimensions:

Weight:

Material:

Strain relief:

Relays:

Analog:

Digital:

Audio:

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 V AC 7.5A at 110

V AC

10A at 30 V DC 5A at 30 V DC

4-20mA

RS-485-modbus

105 dB at 30cm/12in

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



P a g e | 20

AM-5150

Notes:

ENMET



P a g e | 21

AM-5150

8.0 Terms and Conditions

ENMET

8.1 Ordering Information

Address orders to:

ENMET

Attention: Customer Service Department

680 Fairfield Court

Ann Arbor, MI 48108

Email Orders: [email protected]

Phone: 734-761-1270 Fax: 734-761-3220

You may also contact our customer service department by email [email protected]. MINIMUM ORDER IS $50.00.

8.2 Delivery

Unless Seller otherwise specifies, delivery will be made: FOB Ann Arbor, MI and/or FOB Bowling Green, KY. Title and risk of loss shall pass to Buyer at that point. Shipping and handling charges will be Prepaid and Added to Buyer’s invoice. Buyer may request shipping be charged to their own account with a preferred carrier. Seller shall have the right to choose means of transportation and to route shipment when specific instructions are not included with Buyer’s order. Seller agrees to deliver the goods and services, within the time, in accordance with specifications, at the prices specified on the face hereof. Buyer’s orders to this quotation are not subject to cancellation or deferment of delivery without indemnification of loss to the Seller resulting there from. Seller shall not be liable to Buyer for any loss or damage sustained on account of this delay or nonperformance due to causes beyond Seller’s control and without his fault or negligence. Where performance of the terms here is contingent upon timely delivery of goods or services by the Buyer and such delivery is in default, Seller shall be indemnified for any damage or loss resulting there from, and/or by extension of Seller’s delivery commitment, as applicable.

8.3 Payment Terms

Payment Terms are Net 30 Days from the date of shipment from Seller unless otherwise noted. All shipping and handling costs will be charged to Buyer on a Prepaid and Add basis. Buyer has the option of paying for shipping by charging its own account with a carrier

8.4 Warranty Information and Guidelines

The Seller 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. The warrant covers both parts and labor excluding calibration and expendable parts such as filters, detector tubes, batteries, etc. If the inspection by the Seller 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. The Seller shall not be liable for any loss or damage caused by the improper use or installation of the product. The Buyer indemnifies and saves harmless the Seller with respect to any loss or damages that may arise through the use by the Buyer or others of this equipment. This warranty is expressly given in lieu of all other warranties, either expressed, implied or statutory, including that of merchantability, and all other obligations, or liabilities of ENMET, LLC for damages arising out of or in connection with the use or repair or performance of the product. In no event shall ENMET, LLC, be liable for any indirect, incidental, special or consequential damages or for any delay in the performance by ENMET, LLC, which may arise in connection with this equipment. ENMET neither assumes nor authorizes any representatives or other persons to assume for it any obligation or liability other than that which is set forth herein.

Buyer agrees to indemnify and save harmless Seller for any damage or loss from lawsuits against Seller by reason of manufacture of sale of materials, parts, or use of processes resulting from Buyer’s design specifications. Any patent, design, pattern, tool, die, jig, fixture, drawing, test equipment, or process furnished by Seller; whether possessed by the Seller before the date of this quotation, or devised or acquired by Seller during performance of the terms of this quotation, shall remain the property of the

Seller except by specific stipulation on the face hereof. Seller reserves the right, without liability, for damage or loss, to destroy

Buyer’s drawings, specifications, patterns and special tools supplied by Buyer for performance of the terms on the face hereof, unless Buyer gives notice of the disposition of such items.

8.5 Return Policy

All returns for credit must be approved in advance by ENMET, LLC. Such returns are subject to a minimum $50.00 or 20% restocking charge, whichever is greater. Approval of equipment for return is totally at the discretion of ENMET, LLC. All requests for return/exchange must be made no later 30 days of the original shipping date from ENMET. The actual amount of any resulting credit will not be determined prior to a complete inspection of the equipment by ENMET. Calibration gas cylinders cannot be returned or restocked.



P a g e | 22

AM-5150

9.0 Instructions for Returning an Instrument for Service

ENMET

Contact the ENMET Service Department for all service requests.

Phone: 734-761-1270

Email: [email protected]

Fill out the “Service Request Form” found at the end of this manual and return with your instrument for all needs. Please send your instrument for service to the site in which the product was purchased. A new “Service Request Form” may be requested if the one found in the manual is not available. All instruments should be shipped prepaid to ENMET.

Address for Service:

Michigan Location:

ENMET

Attention: Service Department

680 Fairfield Court

Ann Arbor, MI 48108

Kentucky Location:

ENMET

62 Corporate Court

Bowling Green, KY 42103

Providing the “Service Request Form” assists in the expedient service and return of your unit and 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 and the customer will be expected to pay the evaluation fee. Serviced 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.

For Warranty Repairs, please reference ENMET’s “Warranty Information and Guidelines” (found earlier in this section).



P a g e | 23

Mailing/Shipping Address:

ENMET

680 Fairfield Court

Ann Arbor, MI 48108 [email protected]

Phone: 734.761.1270

Fax: 734.761.3220

Product Name or Number:

Product Serial Number:

Describe Problem or Needed Service:

Service Request Form

Warranty Claim?

☐

Yes

☐

No

Billing Address:

Contact Name:

Email:

PO/Reference

#:

CUSTOMER INFORMATION

Shipping Address:

Phone #:

Fax #:

☐

COD

Card Number

Name as it Appears on

Card:

☐

PAYMENT METHOD

VISA/MasterCard

Exp. Date

☐

American Express

Security Code:

☐

UPS Ground

RETURN SHIPPING METHOD

☐

UPS 3 Day

☐

UPS Next Day

☐

UPS ND Air

Select Air Saver

UPS Account #:

☐

FedEx Ground

☐

FedEx Air

Express Saver

FedEx Account #:

Insure Shipment:

☐

Yes

☐

No

☐

FedEx Air

Overnight Std.

☐

FedEx Air 2

Day

Insurance

Amount:

$

☐

UPS 2 Day Air

☐

FedEx Air

Overnight P-1

ENMET

Service Request Form

Rev.2 – 9/15/2016

No results