ENMET SPECTRUM User Manual
ENMET
PO Box 979
Ann Arbor, MI 48106-0979
Corporation
Spectrum ON-LINE
Instrument Manual
80003-033
September 1997
MCN-186; 03/06/98
MCN-204; 10/20/99
MCN-221; 11/10/99
MCN-228; 11/30/99
MCN-244; 09/25/00
MCN-252; 04/05/01
MCN-268; 11/05/01
MCN-276; 05/10/02
MCN-293; 05/27/03
MCN-308; 10/16/03
MCN-315; 02/12/04
Table of Contents
INTRODUCTION............................................................................................................................................................. 1
1.1 Unpack............................................................................................................................................................................... 1
1.1.1 Check Order................................................................................................................................................................1
1.1.2 Serial Numbers ...........................................................................................................................................................1
1.2 Turn the instrument ON.....................................................................................................................................................2
1.2.1 Verify...........................................................................................................................................................................2
1.2.2 Acknowledge alarm.....................................................................................................................................................2
1.2.3 Remove gas .................................................................................................................................................................2
1.2.4 Contact ENMET.........................................................................................................................................................2
2.0 F
EATURES AND INSTALLATION................................................................................................................................2
2.1 Features..............................................................................................................................................................................2
2.2 Installation .........................................................................................................................................................................3
2.2.1 Mount Enclosure.........................................................................................................................................................3
2.2.2 Relay Contacts............................................................................................................................................................3
2.2.3 Turn On.......................................................................................................................................................................3
3.0 O
PERATION ........................................................................................................................................................... 4
3.1 Operational Menu ..............................................................................................................................................................4
3.2 Gas Concentration Display and Alarms.............................................................................................................................5
3.4 Alarm Acknowledge..........................................................................................................................................................5
3.5 Data....................................................................................................................................................................................5
3.6 Interference Gases..............................................................................................................................................................5
4.0 M
AINTENANCE....................................................................................................................................................... 6
4.1 Maintenance Menu ............................................................................................................................................................6
4.1.1 Key ..............................................................................................................................................................................7
4.1.2 Zero.............................................................................................................................................................................7
4.1.3 Calibration..................................................................................................................................................................8
4.1.4 Changing the Alarm Level ..........................................................................................................................................9
4.1.5 Setting a New Key .......................................................................................................................................................9
4.2 Changing Components.......................................................................................................................................................9
4.2.1 Sensor Removal and Replacement..............................................................................................................................9
5.0 R
EPLACEMENT PART NUMBERS ........................................................................................................................... 10
6.0 WARRANTY...................................................................................................................................................... 11
A
PPENDIX A: CALIBRATION DATA TABLES ................................................................................................................. 12
A
PPENDIX B: INTERFERENCE GASES.......................................................................................................................... 14
List of Illustrations
Figure 1: SPECTRUM ON-LINE Features.......................................................................................................................................3
Figure 2: Operation Menu Diagram.............................................................................................................................................4
Figure 3: Maintenance Menu Diagram........................................................................................................................................6
Figure 4:Intial Calibration of Replacement Sensor......................................................................................................................8
Table 1: Gas Ranges, Alarm Points and Sensor Life................................................................................................................. 12
Table 2: Spectrum Calibration Voltage and Countdown Times ................................................................................................13
Figure 5: Identification of Calibration Adapters & Sample Draw System ................................................................................13
Reference information:
N
OTE: [important information about use of instrument – if not followed may have to redo some steps.]
C
AUTION: [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.]
Spectrum ON-LINE ENMET Corporation
Introduction
The SPECTRUM ON LINE is a small powered by an AC adapter operated single channel gas detection instrument.
Depending on the sensor supplied with the instrument, it can detect one of a number of potential target gases. An
electrochemical cell detects the gas, and the gas concentration is displayed on an LCD. Audio and visual alarms occur
when the target gas concentration exceeds a preset alarm point. At relatively low concentrations of the gas, an alarm
can be acknowledged, which results in the temporary cessation of the audio alarm. Operation and maintenance
procedures are managed with two pushbutton switches. For ruggedness and EMF protection, the instrument enclosure
is an aluminum die casting. The instrument is shown in Figure 1.
A number of sensors have been qualified for target gases, the list is found in Table 1.
NOTE: All specifications stated in this manual may change without notice.
1.1 Unpack
Unpack the SPECTRUM ON LINE 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.
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
1.1.1 Check Order
Check, the contents of the shipment against the purchase order. Verify that the SPECTRUM ON LINE is received as
ordered. Each S
they are present. Check the contents of calibration kits. Notify ENMET customer service personnel of any
discrepancy immediately.
1.1.2 Serial Numbers
Each SPECTRUM ON LINE is serialized. These numbers are on tags on the equipment and are on record in an ENMET
database.
PECTRUM ON LINE is labeled with its target gas. If there are accessories on the order, ascertain that
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ENMET Corporation Spectrum ON-LINE
1.2 Turn the instrument ON
Turn the instrument ON, by plugging the power supply into a standard 110 VAC wall outlet. In uncontaminated air,
for most instruments the display should read 0000 within ten seconds of turn-on. For an oxygen S
the display reads near 20.9%.
N
OTE: Instruments using biased sensors, this time is extended to 4 minutes, stabilization may take as long as 1 hour.
See Table 1.
1.2.1 Verify
The SPECTRUM ON LINE is calibrated prior to shipment. However, if the target gas is available, expose the sensor to it
to verify that no damage occurred during shipment.
1.2.2 Acknowledge alarm
If the concentration of the target gas is greater than the alarm set point, the instrument indicates an alarm condition.
Acknowledge the alarm by pressing and releasing the right hand pushbutton, SELECT; this silences the audio alarm
for four minutes unless the concentration of the target gas is greater than the upper alarm limit. See Table 1 for a list
of alarm set points and upper alarm limits for various target gases.
1.2.3 Remove gas
Remove the source of the target gas. After the display reads zero or close to it, unplug the instrument.
1.2.4 Contact ENMET
If the instrument does not operate as described, contact ENMET customer service personnel immediately.
PECTRUM ON LINE,
2.0 Features and Installation
2.1 Features
The features of the SPECTRUM ON LINE are shown in Figure 1. These are:
DISPLAY An LCD upon which either the gas concentration, or prompts for the operational and maintenance
menus, are given.
PUSHBUTTON
SWITCHES
•OPTION The left hand switch.
•SELECT The right hand switch.
These switches are used to access and utilize the operational and maintenance menus.
SENSOR HOUSING A small cylindrical turret on the display surface; the membrane of the electrochemical sensor is
VISUAL ALARM A red LED which is ON whenever the target gas concentration is above the alarm point.
AUDIO ALARM A small horn, which is ON whenever, the gas concentration is above the alarm point, until the
COVER Retained with four screws and removed to change the sensor and access the terminal strip.
RELAY CONTACTS On a terminal strip inside the enclosure.
There are two of these, as follows:
exposed to the atmosphere through the hole in the turret.
alarm is acknowledged.
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Spectrum ON-LINE ENMET Corporation
r
p
Pushbutton Switches
Cove
Top View
Sensor Housing
Visual Alarm
Display
Audio Alarm
Exterior View
Side View
Interior View
Terminal Stri
Figure 1: SPECTRUM ON-LINE Features
2.2 Installation
2.2.1 Mount Enclosure
Mount enclosure at an appropriate location using the four mounting holes accessible inside the enclosure. See Figure 1
Dimensions are in inches.
2.2.2 Relay Contacts
One set of alarm relay contacts are accessible on a spring-clamp terminal strip inside the enclosure after removing the
cover. See below for Terminal strip locations and suggested relay wiring.
Terminal position Connection
10 C
11 NC
12 NO
Contact position refers to the unpowered condition that is also the
C NC NO
Terminal Strip
alarm condition. Relay contacts are rated at 2amps. Instrument
ground is accessible at terminal strip locations 2 and 3, and +12
DC is available at locations 5, and 6. When powering an
V
auxiliary device with +12 V
DC, do not overload the power supply
(exceed 200mA). If desired, the relay wires exit through the hole
110VAC
or
24 – 24VDC
VAC High or +24 – 24VDC
Strobe or Horn
on the right side of the enclosure. Remove the hole plug and use
an appropriate strain relief. The strain relief is available from
VAC Neutral or –24 – 24VDC
ENMET; see Section 5.0, Replacement Parts List.
Suggested Relay wiring
2.2.3 Turn On
Plug the power supply into a 110 VAC outlet. The display should read “0000” within ten seconds when the monitor is
supplied with uncontaminated air.
OTE: Instruments using biased sensors, this time is extended to 4 minutes and stabilization may take as long as 1
N
hour. See Table 1.
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ENMET Corporation Spectrum ON-LINE
N
N
N
N
N
3.0 Operation
3.1 Operational Menu
The operational menu diagram is shown in Figure 2. This menu is accessed with the OPTION pushbutton switch, the
left hand switch as viewed from the front of the instrument. Successive displays are achieved by repeatedly pushing
the switch; as indicated by “O” in the menu diagram. The alarm acknowledgement function, the displays and function
in the “see DATA” area, are accessed with SELECT pushbutton, indicated by “S” in the menu diagram.
Operational
Display
XXXX
O
Batt=OK*
O
Alm=XXXX
O
O
go Setup
O
Maintenance
Menu Key
See Figure 3
*may also be
“low” or “LOW”
S
S
S
S
S
Acknowledge
Alarm
o
Function
o
Function
Max=XXXXSee DATA
Min=XXXX
Clr DATA
O
O
O
XX YY °C
S
S
S
S
o
Function
o
Function
Reset
Data
o
Function
O
O = Option Switch
S = Select Switch
Figure 2: Operation Menu Diagram
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Spectrum ON-LINE ENMET Corporation
3.2 Gas Concentration Display and Alarms
The LCD furnishes a numerical display of the target gas concentration from 0000 to the upper limit of the range,
shown in Table 1. The display of the target gas concentration is termed the "operational display". If the target gas
concentration exceeds the upper limit of the range, the display is the numerical upper limit and a plus sign, for
example,"0200+", for hydrogen sulfide. When the concentration of the target gas exceeds the alarm set point, the
audio and visual alarms are activated. The gas concentration continues to be displayed during alarm. The alarm point
is adjustable between a lower and upper alarm limit by accessing the maintenance menu; these and the factory setting
of the alarm point are also given in Table 1. A user should have a justifiable application-based reason for setting the
alarm point higher than the factory setting. When the target gas concentration drops below the alarm point, the audio
and visual alarms cease operation. The alarm point setting can be observed on the display by pushing the OPTION
pushbutton twice.
Some types of gases are difficult to detect in an ambient/static atmosphere. For these types of gases ENMET
recommends using a sampling system similar to ENMET Sample Draw Module 03700-029. See Appendix A Table 2.
For the oxygen S
(adjustable) and 23.5% (fixed).
If an alarm concentration is encountered when the display is at a location in the operational menu other than the
operational display, the audio and visual alarms are activated and the alarm cannot be acknowledged.
If the display is left idle at a location other than the operational display for 45 seconds it automatically transfers to the
operational display.
PECTRUM ON LINE, the zero gas display is 20.9% oxygen, and the two alarm points are at 19.5%
3.4 Alarm Acknowledge
When the instrument is in alarm, and the target gas concentration is below the upper alarm limit, the alarm can be
acknowledged by pressing and releasing the SELECT pushbutton, but only when the instrument is at the operational
display. The acknowledgement causes the temporary cessation of the audio alarm; the red LED continues to be ON.
The audio alarm is OFF for a period of four minutes, after which it is reactivated, if the gas concentration is still above
the alarm point. The alarm can again be acknowledged. However, acknowledgement of the alarm at gas
concentrations above the upper alarm limit does not result in audio alarm cessation, and if the gas concentration rises
above the upper alarm limit during an alarm condition which has been acknowledged, the audio alarm resumes
operation.
3.5 Data
The SPECTRUM ON LINE retains the maximum and minimum gas concentration values encountered since turn-on, or
since the data was cleared and reset. To access this press the OPTION pushbutton three times; "see DATA" is
displayed. Press the SELECT pushbutton; the maximum concentration since turn-on or last reset is displayed. Press
the OPTION pushbutton again; the minimum concentration since turn-on or last reset is displayed. Press the
OPTION pushbutton again; "clr DATA" is displayed. Pushing the SELECT pushbutton clears the data and resets it to
the current concentration. See comments on the use of this feature in Section 4.1.3, Calibration.
Pushing the OPTION pushbutton once more results in a display the internal temperature of the instrument in degrees
centigrade and Fahrenheit. Another push of the OPTION pushbutton results in a display of the version of the code
stored in the instrument. Push the OPTION pushbutton three more times to return to the operational display.
3.6 Interference Gases
For each target gas, some gases other than the target gas cause a sensor response, and thus are termed "interference
gases". A compilation of known interference gases for the various target gases is given in Appendix B, along with
gases that are known to not cause a sensor response.
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