ENMET AM-5150 User Manual

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Page 1

ENMET Corporation

PO Box 979 Ann Arbor, MI 48106-0979

www.enmet.com

AM-5150

Ambient Air Monitor

Manual

Manual part number 80003-550

MCN-453, 07/19/11

Page 2

Table of Contents

1.0 INTRODUCTION................................................................................................................................................................ 1

1.1 U

NPACK

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

1.2 C

HECK ORDER

1.3 S

ERIAL NUMBERS

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

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

2.0 COMPONENTS OF THE AM-5150 .................................................................................................................................. 2

2.1 AM-5150

2.2 AM-5150 O

2.3 C

IRCUIT BOARD FEATURES

ELEMENTS

PERATIONAL FEATURES

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

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

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

3.0 INSTALLATION OF THE AM-5150 ................................................................................................................................ 4

3.1 M

OUNTING

AM-5150 ......................................................................................................................................................... 4

3.1.1 Wiring the AM-5150 .................................................................................................................................................. 4

3.1.2 Power Supply .............................................................................................................................................................. 4

3.2 S

ENSOR LOCATION

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

3.2.1 Sensor Hook-up ........................................................................................................................................................... 6

3.3 R

ELAY CONTACTS

.............................................................................................................................................................. 7

4.0 OPERATION ....................................................................................................................................................................... 8

4.1 S

TART UP

AM-5150 ........................................................................................................................................................... 8

4.1.1 Typical Start Up .......................................................................................................................................................... 8

4.2 N

ORMAL DISPLAY MODE

.................................................................................................................................................... 9

4.2.1 Alarm Conditions AM-5150 ....................................................................................................................................... 9

5.0 MAINTENANCE ............................................................................................................................................................... 10

5.1 M

AINTENANCE MENUS

5.2 C

ALIBRATION OF THE

..................................................................................................................................................... 10

AM-5150 ....................................................................................................................................... 12

5.2.1 Exit Maintenance Menu ............................................................................................................................................ 13

5.2.2 Zero Adjust ................................................................................................................................................................ 13

5.2.3 Gas Span ................................................................................................................................................................... 14

5.2.4 Alarm Set Points ....................................................................................................................................................... 15

5.2.5 mA Span Set .............................................................................................................................................................. 15

5.3 S

ENSOR REPLACEMENT

.................................................................................................................................................... 16

5.3.1 Sensor Replacement Calibration............................................................................................................................... 17

6.0 ACCESSORY AND REPLACEMENT PARTS ............................................................................................................. 18

7.0 TECHNICAL DATA AND SPECIFICATIONS ............................................................................................................. 18

8.0 WARRANTY ..................................................................................................................................................................... 19

List of Tables

ABLE 1 : RELAY FAILSAFE SETTINGS

ABLE 2:

AM-5150 M

AINTENANCE MENUS SEQUENCE

.......................................................................................................................... 7

............................................................................................... 10

List of Illustrations

IGURE 1: EXTERNAL

IGURE 2:

IGURE 3: MOUNTING

IGURE 4: POWER TERMINAL CONNECTIONS

IGURE 5: INTERNAL VIEW OF SENSOR WIRING

IGURE 6: RELAY TERMINAL CONNECTIONS

IGURE 7:

IGURE 8: CALIBRATION ADAPTER

IGURE 9:

AM-5150 C

AM-5150 M AM-5150 S

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.]

AM-5150 F

IRCUIT BOARD FEATURES

EATURES

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

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

AM-5150 ................................................................................................................................... 4

AM-5150 ................................................................................................. 5

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

AM-5150 .................................................................................................. 7

AINTENANCE MENU FLOW CHART

............................................................................................ 11

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

ENSOR REPLACEMENT

............................................................................................................. 16

Earth Ground

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AM-5150 ENMET Corporation

1.0 Introduction

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 can not 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  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-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

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-5150 is received as ordered. Each AM5150 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 ENMET Corporation

Power Wiring

Visual Indicators:

Pushbutton/Membrane

Visual Indicator

Power/Fault

Front Cover

Sensor/Remote Sensor

Wiring Access

Select

2.0 Components of the AM-5150

2.1 AM-5150 elements

See Figure 1 for location of elements:

Feature Description Enclosure

Front Cover

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.

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-5150 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 control the instrument maintenance functions. The 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-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.

Alarm1, Alarm2, Alarm3

Switches

Audio Alarm

Retaining Screws 4 places

Strain Relief

Figure 1: External AM-5150 Features

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AM-5150 ENMET Corporation

Relay Terminals

Relays

Terminal J12

4-20mA Output

RS-485 Input/Output

Sensor Heat

er Voltage

Sensor

Connection

POT 3

2.3 Circuit Board Features

Feature Description Relay Terminals:

J14, J15, J16, J17

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

POT 2

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 Sensor heater voltage adjustment, See Section 3.2.1 Not used in AM-5150 Do Not Adjust

Terminal J19

DC Power In

Terminal J8

Adjustment POT 4

Figure 2: AM-5150 Circuit Board Features

J14, J15, J16, J17

K1, K2, K3, K4

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AM-5150 ENMET Corporation

3.0 Installation of the AM-5150

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.

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-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.

Cover Inside View

Opened Upward

Attached to Base

Access for Sensor / Remote Sensor Wiring

Right Side View

Dimensions are in inches.

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.

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 VAC, 50/60 Hz. Power should be connected to the Power Input Terminal TB1 and the Ground screw. See Figure 4 for location.

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-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

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

ELECT

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

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AM-5150 ENMET Corporation

Heavier than Air Gas

Sensor Location

Lighter than Air Gas

Sensor Location

Same Density as Air Gas

Sensor Location

AC Power Supply Terminal: TB1

Label on PCB Function 110VAC

TB1 ACL Line

Ground Screw

220VAC

Optional TB1 ACL Line

Ground Screw

AUTION

TB1 ACN Neutral

AC GND

TB1 ACN Neutral

AC GND

: 110/220 VAC when applied

Cover Inside View

Opened Upward

Sensor Heater Voltage Label

DC Power Supply/4-20mA

Terminal: J12

Position Function

1 + 24 V 2 GND 3 4 - 20 mA out

power

Sensor Terminal: J8

Position Function Color

1 Heater Orange 2 Signal Blue 3 Ground 2 wires, Brown & Yellow

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.

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.

Bottled LP (liquefied petroleum) Interior wall; 18-24" from floor. Propane Butane Gasoline Trichloroethylene Vaporized hydrocarbons Hydrogen sulfide

Natural gas (methane) Near ceiling. Ammonia Hydrogen

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

 DO N  Avoid locating anywhere near a vent or window or near an outside

 DO N

locate directly above or beside gas appliances (ovens,

heaters).

doorway.

locate directly above appliances where it is subject to

direct exposure to heat or steam.

locate in direct air currents of windows, doors, or vents.

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AM-5150 ENMET Corporation

Sensor Type

Distance from Sensor to Control Unit

Recommended Wire Gauge

≤

Wiring for

4-wire Terminal

Sensors

Figure 5: Internal View of Sensor Wiring

Optional

Sensor Wiring Terminal*

Optional

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 particular sensor and the control unit.

Recommended Wire Gauge

High Voltage: 812, 813, 826, etc.

Low Voltage: 109

Splash Shield

500 feet

501 – 800 feet 14 AWG Longer Distances Contact ENMET Corp

50 feet

Longer Distances Contact ENMET Corp

16 AWG

Position Function Wire Color

1 Heater Orange 2 Signal Blue 3 Heater Ground Brown 4 Signal Ground Yellow

Wiring for 3-wire Terminal Sensors

Position Function Wire Color

1 Heater Orange 2 Signal Blue 3 Heater Ground Brown

Wire Nut Signal Ground Yellow

The 4th (yellow) wire is not connected to the terminal block, use supplied wire nut

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.

OTE

: The yellow signal wire is not connected to the

terminal block, use supplied wire nut.

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AM-5150 ENMET Corporation

Alarm

Position

Relay Terminals

Relays

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 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:

ABLE 1 : RELAY FAILSAFE SETTINGS

J14 (K1)Relay 1 - NO Normally Open

Alarm 1

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

J15 (K2)Relay 2 - NO Normally Open

Alarm 2

J15 (K2)Relay 2 - NC Normally Closed J15 (K2)Relay 2 - COM Common

J16 (K3)Relay 3 - NO Normally Open

Alarm 3

J16 (K3)Relay 3 - NC Normally Closed J16 (K3)Relay 3 - COM Common

J17 (K4)Relay 4 - NO Normally Open

Fault Alarm

J17 (K4)Relay 4 - NC Normally Closed J17 (K4)Relay 4 - 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 form 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, VAC wires should be separated for VDC wires.

J14, J15, J16, J17

K1, K2, K3, K4

Figure 6: Relay Terminal Connections AM-5150

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AM-5150 ENMET Corporation

AM-5150

5150

311

0ppC

0ppm

0LEL

0ppm

0ppP

0ppm

0ppR

4.0 Operation

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 of 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

Example for reference only

S/W 6.6F

Example for reference only

IF the right most character is a flashing

0ppW

The instrument: Model

The instrument: Serial Number

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

IF the right most character is a flashing

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

The instrument: in Purge Mode Display

 Optional feature, not required in all instruments

The instrument: in Recovery Mode Display

 Optional feature, associated with purge mode

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 preformed.

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

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 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.

ELECT

switch, 3 to 5 seconds, if purge feature is operational 0ppP appears in the display.

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AM-5150 ENMET Corporation

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

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

Display indicates Alarm 1 Set point Press M

ENU

button

0ppm

ENU

A1: 05

ENU

button.

ELECT

Display indicates Alarm 2 Set point Press M

ENU

button

Display indicates Alarm 3 Set point Press M

ENU

button

Display indicates mA Span range (Full Scale)

Press M

ENU

button

A2: 10

ENU

A3: 20

ENU

mA: 50

ENU

ELECT

Press S

ELECT

button

To temporally disable audio alarm, see Section 4.2.1

Display returns to gas measurent

Operational Display Flow 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.

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

Page 12

AM-5150 ENMET Corporation

5ppm

Exit

5.0 Maintenance

The AM-5150 maintenance menus that are accessed by pressing the M maintenance menu section.

5.1 Maintenance Menus

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

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.

OTE

Software revision may cause variations of display output.

Example of Display Function

Normal Display Mode Measurement of CO

ABLE 2:

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

AM-5150 M

AINTENANCE MENUS SEQUENCE

ENU

button and S

ENU

and S

ELECT

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

ELECT

button as described in the

button locations are indicated on the

Press and hold the M The Power/Fault LED will flash Green – Red to indicate the AM-5150 is in Maintenance Mode

Press the M

ENU

Alarm1

ENU

button for 2 – 4 seconds to enter the Maintenance Menu

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

If intended function Press S

button to advance to the Zero procedure

Zero

button to advance to the Span procedure

Span

button to advance to each Alarm set point procedures

Alarm2

For adjusting Zero: If intended function Press S

For adjusting the Span: If intended function Press S

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

Alarm3

Press the M

Pressing the M You must Press the S

ENU

button to advance the mA Span set point procedure

ENU

button without pressing the S

ELECT

button in order to initiate the desired operation.

mA Span

ELECT

button will allow you to cycle through the menu options.

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

ELECT

button

Page 13

AM-5150 ENMET Corporation

Apply

Same mV

Zero

Cal OK

display Bad ZERO

5150 will display

PV:

OTE

Software revision may cause variations of display output.

Normal Gas Display

5ppm

ENU

Press and H

OLD

the M

ENU

button for 2 – 4 seconds to enter the Maintenance Menus

Exit

Span

ENU

ELECT

Press the M

ELECT

Press the S

ENU

button to cycle through Maintenance Menus

ELECT

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

ELECT

Press the S

the Zero signal is within Preset Specs the AM-

Cal OK, See Section 5.2.2

Bad ZERO

PV: 0

the Zero signal is not within Preset Specs the AM-5150 will

ELECT

You can Press and change the Calibration Gas Level

See Section 5.2.3

ELECT

Cal Gas until signal value becomes stable

Cal OK

(about 1 to 4 minutes) See Figure 8 Press S

ELECT

If cal is good display will indicate OK or Same

Bad Sens

If cal is not within preset “range” display will

indicate Bad Sens

ELECT

button to initiate Zero adjustment

OLD

the

to enter the cal signal:

ELECT

button to

Alarm1

ENU

ELECT

Alarm2

ENU

ELECT

Alarm3

ENU

ELECT

mA Span

ENU

return to Normal Gas Display: Press M Then press S

ENU

button until EXIT is displayed

ELECT

button

0050

IGURE 7:

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

See Section 5.2.4

To change mA Span set point: Press Menu button until mA Span 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

See Section 5.2.5

AM-5150 Maintenance Menu Flow Chart

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AM-5150 ENMET Corporation

Select

Sensor

Enclosure

Humidifier

0ppm

0ppR

0ppm

0ppP

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 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

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 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 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-5150 instrument. Calibration equipment is available from ENMET Corporation 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.

OTE

Software revision may cause variations of display output.

ELECT

switches.

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

To Cal Cup

Top View of Humidifier

Sensor

Calibration Cup

Figure 8: Calibration Adapter

To Regulator

Regulator

Gas Cylinder

Page 15

AM-5150 ENMET Corporation

PV:

Abort

5.2.1 Exit Maintenance Menu

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

Example of Exit menu:

ELECT

Exit

ENU

Press the M

Press the S

ENU

button to cycle through Maintenance Menus

ELECT

button to return to the Normal Gas Display.

ELECT

button to return to the instrument Normal Gas

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 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.

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

If you wish to Exit the maintenance menu, press M the instrument Normal Gas Display

ENU

button for 2 to 4 seconds. See Figure 7, AM-5150 Maintenance

ENU

button until the Zero menu is displayed.

ENU

button for 3 – 4 seconds,

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

 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.

Note: You can Press and

ENU

When Abort? appears press S

OLD

ELECT

the

ENU

button to abort Zero

ELECT

button to

return to Zero menu

Example of Zero adjustment display:

Zero

ENU

OTE

Software revision may cause variations of display output.

ELECT

Zero

Cal OK

Bad ZERO

ELECT

Press the S

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

display Cal OK momentarily then advance to Span menu

the Zero signal is not within Preset Specs the AM-5150

will display Bad Zero and return to Zero menu

ELECT

button to force Zero adjustment

Page 16

AM-5150 ENMET Corporation

Abort?

Apply

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

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 7, AM-5150 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.

OTE

To abort calibration. Press and H

ENU

button until Span display.

ELECT

button to perform a Span procedure.

When “Abort?” appears press S

ENU

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

OLD

the M

ENU

button to abort Calibration

ELECT

button to advance to desired menu

ELECT

button to return

ELECT

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.

OTE

To change calibration gas level. Press and H

ELECT

-Use the M

-Use the S

ENU

button to change digits

ELECT

button to move to next digit

OLD

the S

ELECT

button to change the Calibration Gas Level

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

OTE

Software revision may cause variations of display output.

ENU

button to advance to Exit menu or desired menu.

Example of Calibration Display:

Span

ELECT

PV: 0

ELECT

ENU

PV: 0

Cal OK

Bad Sens

Same mV

When cal signal is stable AM-5150 will automatically update: If cal is good display will indicate OK or Same and advance to

To exit press M

Cal Gas until signal value becomes stable

(about 1 to 4 minutes) See Figure 8 Calibration Adapter

Alarm1

or Same mV The AM-5150 will return to the Span Menu

ENU

button until Exit appears and press S

ELECT

Page 17

AM-5150 ENMET Corporation

Alarm1

Alarm2

Alarm3

mA Span

0200

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

2. Press the S

3. Press the M

4. Press the S When last digit is entered the AM-5150 will advance to the next menu

5. Press the M

OTE

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

Example of Alarm Set Point menus:

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

ENU

button to advance to the next menu

ELECT

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

cursor The S

ELECT

next digit

If change is not within range display returns to previous digit If change is within range display moves to next menu

button changes digit indicated by underscore

button locks underscored digit and moves to

ENU

OTE

Software revision may cause variations of display output.

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

2. Press the S

3. Press the M

4. Press the S When last digit is entered the AM-5150 will advance to the next menu

5. Press the M

Example of mA Span menu:

ENU

Default mA Span

4mA 20mA 0 ppm 200 ppm

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

ELECT

To change mA Span set points: Press Menu button until mA Span 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

Page 18

AM-5150 ENMET Corporation

Sensor

Spacer Ring

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.

ARNING

ROCEDURE

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).

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).

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.

OTE

: The user must perform the four color-coded wiring attachments when replacing the sensor. If the yellow signal wire

*Replace facing direction as shown

Optional Splash Shield

Standard Sensor Shield

View of 4-wire Terminal

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 over night.

Page 19

AM-5150 ENMET Corporation

0ppm

0ppR

0ppm

0ppP

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 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

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-5150 instrument. Calibration equipment is available from ENMET Corporation 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.

OTE

Software revision may cause variations of display output.

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.

ELECT

switches.

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

ENU

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

Page 20

AM-5150 ENMET Corporation

Description of Part

Part Number

Electrical Power

Storage and Tr

ansport

Operation

Mechanical

Outputs

6.0 Accessory and Replacement Parts

ENMET accessory part numbers:

Sensor Marking, 109-4 03034-109 Sensor Marking, 812-4 03034-812 Sensor Marking, 813-4 03034-813 Sensor Marking, 018-4 03034-018 Sensor Marking, 019-4 03034-019 Sensor Marking, 821-4 03034-821 Sensor Marking, 830-4 03034-830 Sensor Marking, 832-4 03034-832

Zero Gas, 20.9% O2, 17 liter 03296-209 Span Gas Cylinder of Calibration Gas

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).

Contact ENMET for part number of target gas for each instrument. See note below.

7.0 Technical Data and Specifications

15 Amp fused branch circuit 100-240 VAC

0.45A, 50/60 Hz

0.6A, 24VDC Temperature:

preferred Relative Humidity Atmospheric Pressure

Temperature: Relative Humidity Atmospheric Pressure

Dimensions: Weight: Material: Strain relief:

Relays:

Analog: Digital: Audio:

OTE

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

-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)

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 V 4-20mA RS-485-modbus 105 dB at 30cm/12in

Page 21

AM-5150 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 80003-550

November 2006 MCN-367, 05/17/07

MCN-372, 06/18/07 MCN-385, 10/22/07 MCN-409, 12/04/08 MCN-413, 03/17/09 MCN-446, 03/24/11 MCN-453, 07/19/11

Page 22

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 23

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: $_________________