ENMET Corporation
PO Box 979
Ann Arbor, MI 48106-0979
Manual Part Number
80003-035
MCN-389, 01/21/08
ENG – 97D S
M
ANUAL
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-A
LONE
Table of Contents
1.0 Introduction ..........................................................................................................................................................................1
1.1 Unpack..............................................................................................................................................................................1
1.2 Check Order......................................................................................................................................................................1
1.3 Serial Numbers..................................................................................................................................................................1
2.0 Features ................................................................................................................................................................................2
3.0 Installation............................................................................................................................................................................4
3.1 Mounting Control..............................................................................................................................................................4
3.1.1 ENG-97D S
3.1.2 ENG-97D S
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in standard enclosure.........................................................................................................4
in NEMA-4X enclosure.....................................................................................................4
3.2 Wiring Control..................................................................................................................................................................5
4.0 Calibration............................................................................................................................................................................6
4.2 Automatic Zeroing ............................................................................................................................................................7
4.3 Automatic Calibration .......................................................................................................................................................7
5.0 WARRANTY.......................................................................................................................................................................8
List of Illustrations
Figure 1: ENG-97D S
Figure 1A: ENG-97D S
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Features External View.........................................................................................................3
NEMA-4X enclosure External View..................................................................................3
Figure 2: Installation Diagram, Rear View...................................................................................................................................4
Figure 2A: Installation Diagram, Internal View...........................................................................................................................4
Figure 4: ENG-97D S
Table 1: ENG-97D S
Table 2: Stipulated Calibration Gases for ENG-97D S
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Power Supply Circuit Board.................................................................................................5
Terminal Connections............................................................................................................5
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.............................................................................................6
Figure 5: Calibration with Gas.....................................................................................................................................................7
Reference information:
N
OTE
: [important information about use of instrument – if not followed may have to redo some steps.]
C
W
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.]
ENG-97D S
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1.0 Introduction
The ENG-97D S
Wiring must be in accordance with the NEC and any local codes. This is the responsibility of the installer.
Do not overload the internal power supply by using it as an inappropriate source of power through the relay contacts.
The 0-5 VDC alarm signals are suitable for computer input, transistor switching, etc., not for heavy electrical loads.
Observe temperature limitations. Do not locate the Control where solar radiation can raise the internal temperature on a hot
day.
Do not place the instrument in a high velocity air stream.
RFI: do not operate a radio closer than one meter from the monitor.
N
OTE
: All specifications stated in this manual may change without notice.
1.1 Unpack
Unpack the ENG-97D S
customer service personnel and the commercial carrier involved immediately.
Regarding Damaged Shipments
N
OTE
: It is your responsibility to follow these instructions. If they are not followed, the carrier will not honor
any claims for damage.
This shipment was carefully inspected, verified and properly packaged at 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
• After the inspection and after you have received written acknowledgment of the damage from the carrier, contact
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.
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request immediate inspection of the carton and the contents.
ENMET Customer Service for return authorization and further instructions. Have your Purchase Order and Sales
Order numbers available.
is a single channel monitor designed to operate as a stand-alone toxic gas detector.
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and examine it for shipping damage. If such damage is observed, notify both ENMET
ENMET Corporation
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 ENG-97D S
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.
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is received as
1.3 Serial Numbers
Each ENG-97D S
database.
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is serialized. These numbers are on tags on the equipment and are on record in an ENMET
1
ENG-97D S
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2.0 Features
See figures 1 and 1A.
Feature Description
ENMET Corporation
Enclosure
Enclosure
(optional)
Input Power Supplied with a 110 VAC line cord
Display LCD: 1x8, Hitachi 44780 compatible
Power LED Power On: Green LED
Audio Alarm A Sonalert horn, with on-off switch and red indicator LED.
Visual Alarm Alarm Levels: Three programmable levels, a red LED for each alarm level
Pushbutton Switch For automatic zeroing and calibration
Specifications Description
Output 4-20 mA
Polycarbonate, IP 65 (Shown in Figure 1)
Size: 6.3 inches x 6.5 inches wide x 5.2 inches deep
Weight: 3 pounds
Mounting: Wall
NEMA-4X, certifiable (Shown in Figure 1A)
Size: 4.5 inches x 8.0 inches wide x 5.5 inches deep
Weight: 3 pounds
Mounting: Wall
85-265 VAC, 24 V
Alarms: One of the three alarms, selectable by jumper, operates the horn and relay
Alarm signals: 0 or 5 VDC are available for limited application, such as computer inputs
DC
Temperature
Programming
Humidity
Relays 2 Amp at 120 VAC, at one alarm level in conjunction with horn, contacts available on terminal
N
OTE
: All specifications stated in this manual may change without notice.
–20C to +50C. Observe limitation on the sensor of the associated sensor/transmitter.
Programmed per order
Generally 0-95% RH, noncondensing
strip
2
ENG-97D S
Power
Alarm
Power
Horn Off
Alarm
LEDs
Horn Off
Pushbutton
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ENMET Corporation
LEDs
LED
For
Zero & Span
Display
LED
Power Cord
Front View Side View
Horn
Power Cord
Figure 1A: ENG-97D S
Figure 1: ENG-97D S
LED
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NEMA-4X enclosure External View
Features External View
Horn
LED
Display
3
ENG-97D S
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ENMET Corporation
3.0 Installation
3.1 Mounting Control
Open the cover and mount the instrument where desired as a C
mounting screws and the rubber seal washers supplied. See Precautions in introduction, regarding selection of the location.
See Figures 2 and 2A for mounting dimensions.
ONTROL
for the associated sensor/transmitter, using appropriate
3.1.1 ENG-97D S
N
OTE
:
Allow at least 3 inches at the bottom of the closed enclosure for cable fittings and cable.
3.1.2 ENG-97D S
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Figure 2: Installation Diagram, Rear View
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in standard enclosure
in NEMA-4X enclosure
N
Figure 2A: Installation Diagram, Internal View
OTE
:
Allow at least 3 inches at the bottom and to the left of the closed enclosure for cable fittings and cable.
4
ENG-97D S
Terminal J4
Terminal J3,
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ENMET Corporation
3.2 Wiring Control
The C
ONTROL
instrument. In this case, supply an appropriate sealed conduit fitting, and supply 85-265 VAC power to the correct positions on
the terminal strip located on the power supply circuit board. See Figure 4 and Table 1.
The outputs are also available on the terminal strip. For the 4-20mA loop output, use shielded cable and the sealed fitting
supplied, or conduit and an appropriate fitting, for the output wires.
N
OTE
: The output fitting is supplied with a short length of cable in it, to assure that the enclosure remains sealed if the fitting is
retained but not used.
A jumper on the power supply board is used to select the alarm level that activates the horn and relay; see Figure 4 and Table 1.
is supplied with a 110 VAC line cord. This may be detached and discarded if it is desired to run conduit to the
Terminal J3
Positions 12 – 15
for AC input
Horn & Relay Jumper
Figure 4: ENG-97D S
W
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.
Auxiliary alarms should be powered from an independent power source separate form the instrument power to avoid alarm
failure due to controller malfunction.
Table 1: ENG-97D S
Connection Terminal position
AC Input
Relay contacts
4-20mA Output
Horn & Relay Jumper
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85 – 265 VAC, 50 – 60 Hz
AC Line (High): J3 Positions 12 & 13, in parallel
AC Neutral: J3 Position 14
AC Ground: J3 Position 15
J3 Positions 1 – 3
J3 Positions 6 – 7
• 6 is ground
• 7 is 4-20mA output
J4, top to bottom (gray block indicates jumper position)
Jumper location: Low alarm Mid alarm High alarm
Power Supply Circuit Board
Terminal Connections
5
ENG-97D S
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ENMET Corporation
4.0 Calibration
C
AUTION
Calibration is the process of aligning the preset instrument electronics to the installed sensors, making the instrument read
accurately. It consists of a zero reading which tells the instrument what it should read in uncontaminated (clean) air, and a span
reading that tells the instrument what it should read in the presence of its target gas. Calibration, including the zero and span
adjustments should be performed on a quarterly basis.
The ENG-97D S
switch unless zero or span gas is being applied to the sensor (see caution). This switch facilitates automatic zeroing and automatic
calibration with appropriate gas. The parameters described; stipulated calibration gas, response to calibration gas and the ENMET
part number for a cylinder of calibration gas are given for various sensor types in Table 2.
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OTE
N
OTE
:
The ENG-97D S
provided, it is possible to miscalibrate a sensor/transmitter by using the incorrect gas.
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Table 2: Stipulated Calibration Gases for ENG-97D S
S/T for Gas Calibration Gas Response Cal Gas P/N
Ammonia 50ppm NH3 50 ppm 03318-050
Arsine 0.5 ppm PH3 0.5 ppm 03305-005
Boron Trichloride 10 ppm HCL 10 ppm 03302-010
Carbon Monoxide 100 ppm CO 100 ppm 03219-100
Chlorine 5 ppm CL2 5 ppm 03331-005
Chlorine Dioxide Consult ENMET
Chlorine Trifluoride
Dichlorosilane 10 ppm HCL 3 ppm 03302-010
Ethylene Oxide 5 ppm ETO 5 ppm 03332-005
Fluorine Consult ENMET
Hydrogen 800 ppm H2 800 ppm 03227-800
Hydrogen Bromide 5 ppm HCL 25 ppm 03302-005
Hydrogen Chloride 10 ppm HCL 10 ppm 03302-010
Hydrogen Cyanide 10 ppm HCN 10 ppm 03303-010
Hydrogen Fluoride 5 ppm CL2 3 ppm 03331-005
Hydrogen Sulfide 20 ppm H2S 20 ppm 03314-020
Nitrogen Dioxide 5 ppm NO2 5 ppm 03333-005
Nitric Oxide 25 ppm NO 25 ppm 03334-025
Oxygen *see note 2 20.9 % O2 20.9 % 03296-209
Ozone 0.3 ppm O3 0.3 ppm Use Ozone generator
Ozone 0.5 ppm Cl2 0.3 ppm O3 Use Cl2 Test generator
Phosphine 0.5 ppm PH3 0.5 ppm 03205-005
Silane 5 ppm SiH4 5 ppm 03306-005
Silicon Tetrachloride 5 ppm HCL 25 ppm 03302-005
Sulfur Dioxide 10 ppm SO2 10 ppm 03315-010
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is equipped with a pushbutton switch, located on the left side of the front surface. Never push this
must be calibrated with the stipulated calibration gas. Although safeguards are
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Consult ENMET
1: All specifications stated in this manual may change without notice.
2:
* Oxygen Monitor with a 0 – 30% range are zero set at the factory. 20.9% by volume O2/78.1% by volume N2 is the
calibration gas. If zeroing of an Oxygen Monitor should be needed 100% by volume N2 (0% by volume O2) is the
zero gas.
Toxic Monitor 20.9% by volume Oxygen /78.1% by volume N2 may be used for (clean air) zero gas, see section 4.3
automatic zeroing.
6
ENG-97D S
Calibration & Zeroing
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ENMET Corporation
4.2 Automatic Zeroing
O
XYGEN MONITOR
: Oxygen Monitor, 0 – 30% by volume, do not require the automatic zeroing step, proceed to section 4.3
automatic calibration.
T
OXIC MONITOR
: If the air around the Monitor contains significant levels of the target gas or interference gases, the sensor must
be exposed to a source of fresh, clean air to perform an automatic zeroing procedure. Kits are available from ENMET
Corporation that includes a cylinder of 20.9% oxygen, free of contaminants. The recommended flow rate of air from a cylinder
is 0.5 liters per minute.
Expose the sensor to fresh clean air for at least 30 seconds. Press and release the Calibration & Zeroing Pushbutton Switch.
After the switch is released, if the signal from the sensor is within the established Zero (clean) range, the Monitor display is
forced to zero. If the sensor reading is too high or too low, zeroing will not take place.
N
OTE
: Under certain conditions, the display may be off 1 display unit.
If the Monitor does not read zero and continues to read more than several display units above zero, expose the sensor to clean
air from a cylinder of 20.9% oxygen for 2 minutes. After 2 minutes, press and release the Calibration & Zeroing Pushbutton
Switch again. If the display still does not zero, the sensor may need to be replaced.
4.3 Automatic Calibration
ENMET Corporation makes available a calibration kit that
contains the stipulated calibration gas and a calibration
adapter. With reactive gases it is imperative that the
proper regulator, tubing and calibration cover be used.
Failure to do so, may cause inaccurate and/or failed
calibrations. Contact your local distributor or ENMET for
more information. See Table 2 for calibration gas values
and replacement cylinder part numbers.
Screw the regulator valve of the calibration adapter onto
the calibration gas cylinder, and open the flow control
valve. Put the cup over the sensor. See Figure 5.
After 1-3 minutes, when the display stops changing, press
the calibration switch. If the sensor output is within the
calibration range, the display changes to the value of the
contents of the calibration gas.
Example: If calibrating with 50
PPM
CO, the display
changes to “0050”.
N
OTE:
Alternative calibration gas sources, such as
permeation tube or gas generator. Follow
instruction supplied with that equipment
N
OTE
: Under certain conditions, the display may be off
± 1 display unit, Hydrogen may be off ± 20 ppm.
Pushbutton Switch
Calibration Cup
Calibration Adapter
Flow Control Valve
Gas Cylinder
W
ARNING
:
If at this point the display does not change, calibration has not been accomplished. Check the following:
♦ Be sure that the proper calibration adapter is being used. Reactive gases can be absorbed by standard tubing. Special non-
reactive tubing should be used for reactive gases. ENMET calibration kits are supplied with appropriate tubing for the gas
in the kit.
♦ Be sure that the gas is not outdated. The shelf life or manufacture date is on the gas cylinder label.
♦ If sufficient fresh calibration gas is being used, try the calibration again. If the same result is obtained, the most probable
cause is a sensor with low output. Such a sensor is nearing the end of its useful life. Install a new sensor, and recalibrate.
Figure 5: Calibration with Gas
7
ENG-97D S
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ENMET Corporation
5.0 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, which 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
80003-035
August 2000
MCN-288, 10/15/02
MCN-389, 01/21/08
8
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 $30 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/RPS surface 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.
Repair Return Form
Mailing Address:
ENMET Corporation
PO Box 979
Ann Arbor, Michigan 48106
Phone Number: 734.761.1270
FAX Number: 734.761.3220
Your Mailing Address: Your Shipping Address:
Shipping Address:
ENMET Corporation
Attn: Repair Department
680 Fairfield Court
Ann Arbor, Michigan 48108
Contact Name: __________________________ Your Phone: _______________________
Your PO/Reference Number: _______________ Your FAX: _______________________
Payment Terms: K COD
(check one) K VISA / MasterCard______________________ ________
Card number Expiration
Return Shipping Method:
K UPS/RPS Surface: K 3 day K 2nd Day Air K Next Day Air
K Federal Express: K Next Day Morning K Next Day AfternoonK Standard
K FedEx Account number: ________________________
Would you like ENMET to insure the return shipment?
K No K Yes Insurance Amount: $_________________
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