ENMET ISA-200-RAL-O User Manual
ENMETENMET Corporation
PO Box 979
Ann Arbor, MI 48106-0979
ISA-200 RAL
ISA-200 RAL O
Operation and Maintenance
Manual
80002-039
07/14/00
MCN-237, 09/20/00
MCN-274, 04/12/02
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 ...................................................................................................................2
2.1 Exterior Features ............................................................................................................................................................... 2
2.2 Display Panel Features.....................................................................................................................................................2
2.3 Circuit Board Features ..................................................................................................................................................... 4
2.3 Power Supply.....................................................................................................................................................................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.......................................................................................................................................................6
3.4.2 Optional 4-20mA Outputs....................................................................................................................................7
3.5 Initial Calibration..............................................................................................................................................................7
4.0 OPERATION....................................................................................................................................8
4.1 Normal Operation Condition...........................................................................................................................................8
4.2 Alarm Set Points ............................................................................................................................................................... 8
4.3 Alarm Latching .................................................................................................................................................................. 8
4.4 Audio Defeat......................................................................................................................................................................9
4.5 Display................................................................................................................................................................................9
4.6 Operational Menu..............................................................................................................................................................9
4.7 Fault Indications................................................................................................................................................................9
4.7.1 Low Flow Indication.............................................................................................................................................9
4.7.2 Other Fault Indications........................................................................................................................................9
5.0 MAINTENANCE.............................................................................................................................. 10
5.1 Maintenance Menu.........................................................................................................................................................10
5.1.1 Key..........................................................................................................................................................................11
5.1.2 Automatic Zeroing...............................................................................................................................................12
5.1.3 Calibration............................................................................................................................................................13
5.1.4 Select Alarm Set Points.......................................................................................................................................14
5.1.5 Set Latches............................................................................................................................................................15
5.1.6 Set the Key............................................................................................................................................................15
5.1.7 Exit.........................................................................................................................................................................15
5.2 Sensor Replacement........................................................................................................................................................16
5.2.1 CO Sensor.............................................................................................................................................................16
5.2.2 Oxygen Sensor ......................................................................................................................................................16
5.3 Humidifier Tube .............................................................................................................................................................. 16
5.4 Flow Control Orifice.......................................................................................................................................................16
5.5 Particulate Filter Replacement......................................................................................................................................16
6.0 REPLACEMENT PART NUMBERS ...................................................................................................... 18
7.0 WARRANTY............................................................................................................................... 19
APPENDIX A....................................................................................................................................... 20
List of Illustrations
FIGURE 1: F EATURES OF ISA-200 RAL(O) EXTERNAL..........................................................................................3
FIGURE 1A: REGULATOR...................................................................................................................................3
FIGURE 2: ISA-200 RAL(O) INTERIOR FEATURES.................................................................................................4
FIGURE 3: ISA-200 RAL(O) MOUNTING DIMENSIONS............................................................................................5
TABLE 1: RELAY CONTACTS..............................................................................................................................6
TABLE 2: FAULT RELAY CONTACTS....................................................................................................................7
TABLE 3: OUTPUTS FOR 4-20MA ........................................................................................................................7
FIGURE 4: ISA-200 RAL(O) OPERATIONAL DISPLAY............................................................................................8
TABLE 4: FACTORY ALARM SET POINTS..............................................................................................................8
FIGURE 5: ISA-200 RAL(O) OPERATION M ENU FLOW CHART ................................................................................9
FIGURE 6: ISA-200 RAL(O) MAINTENANCE M ENU FLOW CHART..........................................................................10
FIGURE 7: CONNECTION OF CALIBRATION GAS CYLINDER ....................................................................................12
TABLE 5: FAULT ALARM..................................................................................................................................14
FIGURE 8: REMOVE SHORTING CLIP..................................................................................................................17
FIGURE 9: MANIFOLD...................................................................................................................................... 17
FIGURE 10: LOCATION OF PARTS FOR REPLACEMENT ..........................................................................................17
FIGURE 11: CARBON MONOXIDE CONCENTRATION..............................................................................................20
NOTE: [important information about use of instrument]
CAUTION: [affects equipment – if not followed may cause damage to instrument, sensor etc…]
WARNING: [affects personnel safety – if not followed may cause bodily injury or death.]
ISA 200 RAL (O) ENMET Corporation
1.0 Introduction1.0 Introduction
The ISA-200 RAL(O) is an instrument that monitors compressed air supply systems for certain hazards to the user.
The instrument is available with sensors that monitor air for carbon monoxide (CO), for variations in the oxygen (O2)
content. The sensors can be used alone or both used together. In the instrument, a sample of the compressed air is
passed over electrochemical CO and O2 sensors, the resultant 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
§ flowmeter plus low flow fault indication and display
§ alarm acknowledgement capability including audio defeat
§ mA outputs for each target gas
§ NEMA-12 packaging
NOTE: All specifications stated in this manual may change without notice.
1.1 Unpack
Unpack the ISA-200 RAL(O) 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
NOTE: It is your responsibility to follow these instructions. If they are not followed, the carrier will
not honor any claims for damage.
q This shipment was carefully inspected, verified and properly packaged at our company and delivered to the carrier in good
condition.
q When it was picked up by the carrier at ENMET, it legally became your company’s property.
q 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.
q 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.
q 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-200 RAL(O) 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-200 RAL(O) is serialized. These numbers are on tags on the equipment and are on record in an ENMET database.
1
ENMET Corporation ISA 200 RAL (O)
2.0 Instrument Features2.0 Instrument Features
2.1 Exterior Features
The exterior of the instrument is shown in Figure 1. The exterior features are as follows:
Feature Description
Enclosure A NEMA-12 plastic box, approximately 10x8x6, with a clear hinged front cover.
Sample Air Hose A six foot long hose to conduct a sample of the air from the source to the instrument.
See Figure 1A .
Sample Port The fitting for the sample air hose.
Sample/Calibration
Valve
Calibration Port The entrance for the calibration gas. The quick release fitting mates with one on the
Front Cover Latch
Humidifier Tube Located under a black sheet metal cover. Is a tube that extracts moisture from the
Line Cord A cord to supply 110 VAC to the equipment. Not illustrated.
Audio Alarm A loud horn activated by certain alarm conditions.
Mounting Flanges Flanges with holes for mounting the enclosure to a vertical surface.
Regulator To connect to the compressed air line. Regulator output to the ISA-200 RAL(O) should
A red handled ball valve which directs the air from either the sample or the calibrate port.
The handle points at the port, sample or calibrate, which is providing the air to the
instrument
calibration adapter.
A quick-release latch that holds the clear front cover in place, and is capable of being
padlocked if desired.
atmosphere and adds it to dry sample air, before it is presented to the carbon monoxide and
oxygen sensors.
be set to 55 PSI. See 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.
Flowmeter A flow indicator located at the output of the sample flow stream, which indicates
quantitatively the flow of sample air or calibration gas through the instrument.
Visual Alarms On both sides of the display, a red LED for each sensor on the instrument.
Near the center of the panel ,. a green power LED and a red fault 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.
Alarm Acknowledge/
Audio Defeat
Switch
Directly under the option switch.
2
ISA 200 RAL (O) ENMET Corporation
O
%
CO
Calibration
Port
Front Cover
Sample/Calibration
Sample
Port
Strain Relief
Fault LED
SELECT
Switch
OPTION
Switch
A
Visual Alarm O2
Visual Alarm
CO
Mounting Flanges
to Sample Port
Cover, Humidifier Tube
Display
Audio Alarm
If Oxygen option is
installed
ppm
2
LARM ACKNOWLEDGE
ALARM DEFEAT
Switch
Flow Meter
for Line Cord
2 places
SELECTOPTION
AUDIO
DEFEAT
ALARM
ACKNOWLEDGE
POWER
FAULT
Figure 1: Features of ISA-200 RAL(O) External
Power LED
Latch
Valve
Sample Air Hose
Figure 1A: Regulator
3
ENMET Corporation ISA 200 RAL (O)
Power Supply
2.3 Circuit Board Features
The Display Panel is hinged on the right and is released by unscrewing the 2 thumb screws located in the left corners.
After releasing the panel, it is swung to the right, exposing the interior of the enclosure. The Circuit Board is mounted
on a plate at the back surface of the enclosure interior. Features are shown in Figure 2.
Feature Description
Terminal Strip
This twenty-three position terminal is located at the bottom of the Circuit Board. On
it are twelve positions for three contacts for each of four alarm relays, and three
positions for the contacts of a fault relay.
There are also two positions for each of the 4-20 mA outputs. (optional)
Manifold Housing
The sample manifold, the carbon monoxide and oxygen sensors are located under
this small aluminum housing. Not illustrated in figure 2, see Figure 8.
2.3 Power Supply
The power supply circuit is located on the bottom surface of the inside of the enclosure. The circuit is protected by
two 1.0 Amp fuses mounted in fuse holders on the power supply board.
Audio Alarm
Cover, Humidifier Tube
Humidifier
Tube
Sensor O2
If Oxygen option is
installed
Particulate
Filter
Fuse Holder
Power Supply
PCB
FLOW
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
1
NC C NO NC C NO NC C NO NC C NO NC C NO CO- CO+ DP- DP+ O2- O2+
05217-001 Ass'y Rev
Figure 2: ISA-200 RAL(O) Interior Features
4
Sensor CO
Terminal
Strip
PCB
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