ENMET ISA-300RAL Manuel utilisateur

ENMET Corporation

PO Box 979

Ann Arbor, MI 48106-0979

Manual Part Number

80002-043

MCN-437, 08/19/10

ISA-300RAL

Operation and Maintenance

Manual

Table of Contents

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

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

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

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

2.0 INSTRUMENT FEATURES.............................................................................................................................1

2.1 Exterior Features ..............................................................................................................................................1

2.2 Display Panel Features .....................................................................................................................................2

2.3 Circuit Board Features......................................................................................................................................4

3.0 INSTALLATION ...........................................................................................................................................5

3.1 Mounting of Instrument....................................................................................................................................5

3.2 Sample Air Supply ...........................................................................................................................................6

3.3 Power Supply ...................................................................................................................................................6

3.4 Outputs .............................................................................................................................................................6

3.4.1 Relay Contacts........................................................................................................................................7

3.4.2 Optional 4-20mA Outputs.......................................................................................................................8

3.5 Installation Verification....................................................................................................................................8

4.0 OPERATION...............................................................................................................................................9

4.1 Normal Operation Condition............................................................................................................................9

4.2 Alarm Set Points...............................................................................................................................................9

4.3 Alarm Latching...............................................................................................................................................10

4.4 Audio Defeat ..................................................................................................................................................10

4.5 Display............................................................................................................................................................10

4.6 Fault Indications.............................................................................................................................................10

4.6.1 Low Flow Indication ............................................................................................................................10

4.6.2 Other Fault Indications........................................................................................................................10

4.7 Operational Menu...........................................................................................................................................11

5.0 MAINTENANCE.........................................................................................................................................12

5.1 Cleaning Instructions......................................................................................................................................12

5.2 Maintenance Menu.........................................................................................................................................12

5.2.1 Accessing Maintenance Menu..............................................................................................................12

5.2.2 Maintenance Menu Flow Chart............................................................................................................13

5.3 Calibration for CO, O

and CO

.....................................................................................................................14

5.3.1ALow Cal/ZeroCal Adjust....................................................................................................................15

5.3.1BHigh Cal/SpanGas Adjust..................................................................................................................15

5.3.2 Set 4 –20mA Transmitter Scale ............................................................................................................16

5.3.3 Set Alarm Points...................................................................................................................................17

5.3.4 Set Alarm Delay....................................................................................................................................19

5.3.5 Relay Configuration.............................................................................................................................20

5.3.6 Failsafe Configuration.........................................................................................................................21

5.3.7 Set Output Span Range.........................................................................................................................21

5.3.8 Set New Password ................................................................................................................................22

5.3.9 Exit Maintenance Menu........................................................................................................................22

5.4 Sensor Replacement .......................................................................................................................................23

5.4.1 Gas Sensor............................................................................................................................................23

5.4.2 Oxygen Sensor......................................................................................................................................24

5.5 Flow Control Orifice ......................................................................................................................................24

6.0 TECHNICAL DATA AND SPECIFICATIONS ...................................................................................................25

7.0 REPLACEMENT PART NUMBERS...............................................................................................................26

7.1 ENMET part numbers for sensors and replacement parts:..............................................................................26

7.2 ENMET part numbers for Calibration equipment:..........................................................................................26

8.0 WARRANTY .........................................................................................................................................27

APPENDIX A..................................................................................................................................................28

List of Figures

FIGURE 1: FEATURES OF ISA-300RAL EXTERNAL........................................................................................................3

FIGURE 1A: REGULATOR AND SAMPLE AIR HOSE .........................................................................................................3

FIGURE 2: ISA-300RAL INTERIOR FEATURES...............................................................................................................4

FIGURE 3: ISA-300RAL MOUNTING DIMENSIONS..........................................................................................................5

FIGURE 2A: RELAY,INPUT AND OUTPUT TERMINALS .....................................................................................................6

FIGURE 4: ISA-300RAL OPERATIONAL DISPLAY ..........................................................................................................9

FIGURE 5: ISA-300RAL OPERATION MENU FLOW CHART...........................................................................................11

FIGURE 6: ISA-300RAL MAINTENANCE MENU FLOW CHART. .....................................................................................13

FIGURE 7: CONNECTION OF CALIBRATION GAS CYLINDER ...........................................................................................15

FIGURE 8: SHORTING CLIP..........................................................................................................................................24

FIGURE 9: LOCATION GAS SENSOR MANIFOLD............................................................................................................24

FIGURE 10: CARBON MONOXIDE CONCENTRATION......................................................................................................28

List of Tables

TABLE 1:RELAY FAILSAFE SETTINGS ..........................................................................................................................7

TABLE 2: SENSOR OUTPUT...........................................................................................................................................8

TABLE 3: FACTORY ALARM SET POINTS .......................................................................................................................9

TABLE 4: FACTORY SET GAS ALARMS DELAY .............................................................................................................19

Reference Information:

NOTE:[important information about use of instrument]

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

ARNING

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

Attention / Warning

Earth Ground

ISA-300RAL ENMET Corporation

1.0 Introduction

The ISA-300RAL is a compressed air monitoring instrument that measures and detects certain hazards in industrial

compressed air supply systems. The instrument is available with sensors that monitor air for carbon monoxide (CO), carbon

dioxide (CO

) and for variations in the oxygen (O

) content. The sensors can be used alone or up to four sensors can be used

together. In the instrument, a sample of the compressed air is passed over each sensor and the resulting electrical outputs are

used to evaluate the air for the target gases. Some features of the instruments are as follows:

continuous monitoring of the sample 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

low air flow fault indication and display

alarm acknowledgement capability including audio defeat

mA outputs for each target gas

OTE

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

1.1 Unpack

Unpack the

ISA-300RAL

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

ISA-300RAL

is received as ordered. 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

ISA-300RAL

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

2.0 Instrument Features

2.1 Exterior Features

The exterior of the instrument is shown in Figure 1. The exterior features are as follows:

ISA-300RAL ENMET Corporation

Feature Description

Enclosure An engineered thermoplastic box, approximately 10x8x6, with a clear hinged front cover.

Input Port The entrance for the air sample and calibration gas. The quick release fitting mates with

one on the calibration adapter.

Front Cover Latch A quick-release latch that holds the clear front cover in place, and is capable of being

padlocked if desired.

Audio Alarm A loud horn activated by certain alarm conditions.

Mounting Flanges Flanges with holes for mounting the enclosure to a vertical surface.

Sample Air Hose A five foot long hose to conduct a sample of the air from the source to the instrument.

The hose has a Female quick release fitting and regulator. See Figure 1A.

Regulator To connect to the compressed air line. Sample pressure to the ISA-300RAL should be set

to 55 PSI. See note Figure 1A.

2.2 Display Panel Features

The display panel, shown in Figure 1, is viewed through the clear front cover of the enclosure, and is accessed by opening the

cover. Features are as follows:

Feature Description

Display

A 2 line, 16 character per line, LCD with backlight.

The numerical values of gas concentrations, and other information are displayed.

Visual

Alarms & Indicators On either sides of the display:

A red alarm LED for each sensor installed in the instrument, Low level alarm.

The top center of the panel:

A red alarm LED for all sensors installed in the instrument, High level alarm.

Near the center of the panel:

A green power indicator LED

A red fault alarm indicator LED

Pushbutton Switches

There are three of these, located near the center of the panel; they are yellow

rectangular membrane switches. They are:

•OPTION Switch The top left switch.

•SELECT Switch Directly to the right of the OPTION switch.

•AUDIO DEFEAT /

ALARM ACKNOWLEDGE

Switch

Directly below the OPTION switch.

ISA-300RAL ENMET Corporation

Figure 1: Features of ISA-300RAL

External

NOTE: Typical gas reading & alarm locations, depending on instrument configuration,

alarms & readings may be in alternate locations

5ft, Supplied with Monitor

Figure 1A: Regulator and Sample Air Hose

OTE

Typical facility air line pressures range from about 55 to 125 PSI. The outlet

pressure of the regulator supplied with the monitor, which is connected to

the inlet of ISA-300RAL the, should be set at 55 PSI,±5PSI.

Female Quick Release

to Inlet Port to ISA-300RAL

¼” NPT

ppm

Front Cover Latch

Male Quick Release Fitting

Input Port

Sample/Calibration

See note below

Audio Alarm

Fault LED

SELECT

Switch

Power LED

OPTION

Swit

LARM

CKNOWLEDGE

LARM

EFEAT

Switch

*Visual Alarm O

(If Oxygen option is installed)

See *note below

*Visual Alarm CO

(See *note below)

Mounting Flanges

2 places

CO2

ppm

Display,

see *note below

CO reading O

reading

Channel #1 Channel #3

Channel #2 Channel #4

Visual Alarm 2

ALARM 2

*Visual Alarm CO

(See *note below)

ISA-300RAL ENMET Corporation

2.3 Circuit Board Features

The Display Panel is hinged on the left and is released by unscrewing the 2 screws located in the right corners. After releasing

the panel, it is swung to the left, 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.

Feature Description

Relay Terminals This group of terminals is located at the left side of the Circuit Board.

For the contacts for each of four alarm relays, and for the contacts of a fault relay.

Output Terminals One 4-20mA output per active channel. 2 channels/outputs per connector.

Sensor Manifold The sample manifold, the carbon monoxide, carbon dioxide and oxygen sensors are

located under this housing.

Figure 2:

ISA

300RAL

Interior Features

Flow Sensor

Power Input

Terminal J23

Audio

Alarm

Relay Terminals

(6 places)

Aux Terminals

Optional (2 places)

Horn Terminal

Fuse Holders

0.630 Amp

(2 places)

Ground Screw

J21

Sensor

Manifold

Digital Communication

Terminals

–

20mA Output

Terminals

4 places

ISA-300RAL ENMET Corporation

3.0 Installation

3.1 Mounting of Instrument

The ISA-300RAL should be located near the pipe or tank containing the air to be monitored, and upstream from where the air

is being used. The ISA-300RAL must be installed such that it samples the compressed air before it reaches the users.

Mount the instrument on an appropriate vertical surface using the mounting flanges provided. Avoid areas with excessive

vibration. The holes in the flanges are 0.31 inch in diameter and form a 6 x 10.75 inch rectangle.

See Figure 3.

It is recommended to use #8 drywall anchors and screws for mounting the ISA-300RAL to a drywall/sheetrock surface.

Dimensions are in inches.

Figure 3: ISA-300RAL

Mounting Dimensions

Mounting Holes

0.31” dia. 4 places

ISA-300RAL ENMET Corporation

3.2 Sample Air Supply

Tap the pipe or tank containing the breathing air and use appropriate fittings to connect the supplied regulator. The regulator must

be set to 55 PSIG.The instrument is designed to operate from an air supply pressure of 55 PSIG (±5PSI).

The sample air exits the instrument from the hole plug located on the bottom of the enclosure. Take care not to obstruct this

exit port.

3.3 Power Supply

The input power can vary from 100 to 240VAC, 50/60 Hz. Mains power should be connected to the Power Input Terminal J23

and the ground screw J21. See Figure 2 for location.

ARNING

Continuous gas detection and alarm systems become inoperative upon loss of primary power.

Upon supplying air and power to the instrument:

The green power on LED is lit.

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

gases monitored 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 AUDIO DEFEAT /ALARM ACKNOWLEDGE switch. If alarm persists longer than 30 minutes, call ENMET

customer service personnel.

3.4 Outputs

Two types of alarm outputs are available, relay contacts and 4-20mA outputs.

Figure 2A: Relay, Input and Output Terminals

Relay 1

Channel 1

Alarm 1

Relay 2

Channel 2

Alarm 1

Relay 3

Channel 3

Alarm 1

Relay 4

Channel 4

Alarm 1

Relay 5

Channel 1-4

Alarm 2

Relay 6

Ch 1-4 / System

Fault

Connector

4-20mA Input

Connector

4-20mA Input

Connector 2

Channel 3 & 4

4-20mA Output

Connector 1

Channel 1 & 2

4-20mA Output

Connector RS485

Connector RS232

Connector RS485

Ground Screw J21

Power Input

Terminal J23

ISA-300RAL ENMET Corporation

3.4.1 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 2 & 2A. The contact positions are noted on the circuit board

next to each terminal.

Relays may also be configured as failsafe or non-failsafe. The default alarm relay configuration is for latching mode, and

failsafe. They may be reconfigured in the maintenance menu. See section 5.3.5 & 5.3.6

The PC Board is labeled for the relays in their un-energized state. If the relay is configured for failsafe, then 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 the Table 1 below:

Table 1 : Relay Failsafe Settings

Position

Failsafe

Alarm

Non

Failsafe

Alarm

J5 Relay 1 - NO Normally Open Normally Closed

J5 Relay 1 - COM Common Common

J5 Relay 1 - NC Normally Closed Normally Open

J6 Relay 2 - NO Normally Open Normally Closed

J6 Relay 2 - COM Common Common

J6 Relay 2 - NC Normally Closed Normally Open

J8 Relay 3 - NO Normally Open Normally Closed

J8 Relay 3 - COM Common Common

J8 Relay 3 - NC Normally Closed Normally Open

J10 Relay 4 - NO Normally Open Normally Closed

J10 Relay 4 - COM Common Common

J10 Relay 4 - NC Normally Closed Normally Open

J14 Relay 5 - NO Normally Open Normally Closed

J14 Relay 5 - COM Common Common

J14 Relay 5 - NC Normally Closed Normally Open

J15 Relay 6/FLT - NO Normally Open N/A

J15 Relay 6/FLT - COM

Common N/A

J15 Relay 6/FLT - NC Normally Closed N/A

Relays can be linked to specific alarms. The table below shows the default relay links. They may be changed in the

maintenance menu if required. See Section 5.0.

Channel 1

Channel 2

Channel 3

Channel 4

Relay 1 Low Alarm

Relay 2 Low Alarm

Relay 3 Low Alarm

Relay 4 Low Alarm

Relay 5 High Alarm High Alarm High Alarm High Alarm

In addition, there is a fault relay, which changes state whenever the instrument is in a fault condition. The contact positions are

noted on the circuit board next to each terminal. See Figure 2A. The coil of this relay is energized when the instrument is in

the non-fault state; the contact conditions given on the circuit board next to the terminal, are for the non-energized state, which

is identical to the fault state.

These relay contacts can be used to operate auxiliary alarms or other functions. It is recommended that power for auxiliary

equipment be supplied from an independent power source, separate for the ISA-300RAL. Place a hole in the enclosure for a

wire exit, and use appropriate cable fittings. Be sure to note the location and depth of hardware inside the enclosure.

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