ENMET EX-5175-EC User manual
ENMET
Corporation
PO Box 979
Ann Arbor, MI 48106-0979
www.enmet.com
Manual Part Number
80003-099
MCN-13-008, 11/06/13
EX-5175-EC
Sensor/Transmitter
Manual
Table of Contents
1.0 INTRODUCTION ....................................................................................................................................................... 1
1.1 Unpack...............................................................................................................................................................................1
1.2 Check Order.......................................................................................................................................................................1
1.3 Serial Numbers..................................................................................................................................................................1
2.0 FEATURES OF THE EX-5175-EC ............................................................................................................................. 2
3.0 INSTALLATION OF THE EX-5175-EC........................................................................................................................ 3
3.1 Mounting the EX-5175-EC Enclosure...............................................................................................................................3
3.2 Wiring the EX-5175-EC to a Control Unit........................................................................................................................4
3.3 Start up...............................................................................................................................................................................5
3.3.1 Typical Start Up..............................................................................................................................................................................5
4.0 OPERATION OF THE EX-5175-EC ........................................................................................................................... 6
4.1 Normal Display Mode .......................................................................................................................................................6
4.1.1 Alarm Conditions EX-5175-EC.....................................................................................................................................................6
5.0 MAINTENANCE OF THE EX-5175-EC ....................................................................................................................... 7
5.1 Maintenance Menu ............................................................................................................................................................7
5.2 Calibration of the EX-5175-EC.........................................................................................................................................8
5.2.1 Zero Adjust......................................................................................................................................................................................9
5.2.2 Gas Span.........................................................................................................................................................................................9
5.2.3 Exit Maintenance Menu ..................................................................................................................................................................9
5.3 Sensor Replacement.........................................................................................................................................................11
6.0 REPLACEMENT PART NUMBERS ............................................................................................................................ 12
7.0 WARRANTY ...................................................................................................................................................... 12
List of Figures and Tables
Figure 1: EX-5175-EC Features ................................................................................................................................2
Figure 2: EX-5175-EC Mounting Dimensions............................................................................................................3
Figure 3: Terminal Positions EX-5175-EC Sensor/Transmitter.................................................................................4
Table 1: EX-5175-EC maintenance Menus Sequence..............................................................................................7
Figure 4: Calibration Adapter EX-5175-EC Sensor/Transmitter................................................................................8
Table 2: Examples of S/T ranges, alarm Points and Calibration Gas .......................................................................8
Figure 5: EX-5175-EC Maintenance Menu Flow chart............................................................................................10
Figure 6: Sensor Replacement................................................................................................................................11
Reference information:
NOTE:[important information about use of instrument – if not followed may have to redo some steps.]
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.]
EX-5175-EC ENMET Corporation
1
1.0 Introduction
The ENMET EX-5175-ELECTROCHEMICAL, EC sensor/transmitters (S/T) is a 3-wire, 24 VDC 4-20mA S/T for the
detection of toxic gas. The EX-5175-EC is meant to be used in conjunction with an appropriate power supply and
controller. The ENMET EX-5175-EC sensor/transmitter has been designed and approved to be used in a Class I,
Div. 1, Groups B, C, D, classified areas. The approval was issued by CSA International.
NOTE:All specifications stated in this manual may change without notice.
1.1 Unpack
Unpack the EX-5175-EC 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
1.2 Check Order
Check, the contents of the shipment against the purchase order. Verify that the EX-5175-EC is received as ordered.
[Each EX-5175-EC 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 EX-5175-EC is serialized. These numbers are on tags on the equipment and are on record in an ENMET
database.
EX-5175-EC ENMET Corporation
2
2.0 Features of the EX-5175-EC
See Figure 1 for location of features:
Feature Description
Display LCD: Indicates the level of gas detected by sensor
Gain Potentiometer
(POT)
POT 1: Display contrast adjustment
POT 2:
POT 3: Not Used, Do not adjust
POT 4:
Visual Alarms LED indicators:
Power / Fault Indicator LED, Green / Red
Alarm (3) Indicator Red LED, user adjustable
Magnetic Switches MENU: Advances the instrument display through menus (Zero, Span, Exit)
SELECT: Selects the Zero, Span, Exit menu or sets proper calibration values for Zero or Span
Sensor For sensing gas at PPM or LEL levels, see Table 3 for sensor types
Magnetic switches control the instrument maintenance functions. The switch locations are indicated by MENU and
SELECT. A magnetic field pulse is applied by momentarily putting the end of the magnet in proximity to the switch
and then removing it. Referred to as tap. Since the magnetic field penetrates the window, the enclosure cover is not
removed in order to perform calibration.
Three alarm points are preprogrammed into the EX-5175-EC sensor/transmitters. At each alarm point, an LED on the
front panel is activated. These internal alarm settings are independent of the 4-20mA output alarm values that can be
set at a controller.
Figure 1: EX-5175-EC Features
POT 3
See Note
POT 4
See Note
POT 2
See Note
POT 1
Internal PCB View
Note: POT 2, POT 3and POT 4
are not used, Do Not Adjust
3 Alarm
Indicators
Power /Fault
Indicator
Display
MENU
Magnetic switch
SELECT
Ma
g
netic switch
Sensor
External View
Menu Select
EX-5175-EC ENMET Corporation
3
3.0 Installation of the EX-5175-EC
CAUTION:Area must be declassified during installation.
The ENMET EX-5175-EC gas sensor/transmitter (S/T) is a 3-wire, 24 VDC,4-20 mA S/T for the detection of toxic
gas. The S/T is meant to be used in conjunction with an appropriate power supply and controller. The ENMET EX-
5175-EC sensor/transmitter has been designed and approved to be used in a Class I, Div. 1, Groups B, C, D, classified
areas. The approval was issued by CSA International. Appropriate wiring, conduit and fittings are required for proper
installation in a explosion proof rated environment.
CAUTION:Since the sensor/transmitter detects gas only at the sensor location, pay attention to the possible sources of
gas, the density of the gas, locations where the gas may be confined and locations where the gas may damage
or injure property or personnel, when choosing locations of sensor/transmitters.
Also, take into consideration environmental factors when deciding on S/T location. Avoid locations where the
S/T may be damaged by liquid immersion, excessive heat or other know hazards. Also, take precautions to
insure condensation inside of the conduit does not enter the S/T.
3.1 Mounting the EX-5175-EC Enclosure
Mount the enclosure, using the two mounting holes provided see Figure 2. Pay particular attention to the source and
density of the gas being detected when choosing the location. Mount the S/T near the ceiling for lighter than air gases
/vapors and near the floor for heavier then air gas/vapors. Contact ENMET if you have questions regarding your
application.
CAUTION:Before connecting S/T to controller remove the power source to controller. Failure to do so may cause
damage to sensitive components.
Figure 2: EX-5175-EC Mounting Dimensions
Optional
Conduit fitting
Typically: ½″NPT female
Mounting Holes
2 places, 0.313″
Sensor
Sensor/Transmitter
Enclosure Side View
Sensor
½
″
NPT female
Sensor/Transmitter
Enclosure Top View
Me
nu
Sel
ect
EX-5175-EC ENMET Corporation
4
3.2 Wiring the EX-5175-EC to a Control Unit
CAUTION:Area must be declassified during installation.
Run conduit and 16 AWG (1.5MM2)wires to the enclosure from the power supply and controller. If the EX-5175-EC
is installed in a hazardous location as defined by the National Electrical Code, then ALL wiring must be in accordance
with the National code and any local governing codes.
Open the enclosure, and remove the 2 screws that retain the display overlay to the circuit board.
Use caution when removing the over lay. Do not damage the magnetic switches.
Remove the two overlay standoffs and remove the circuit board, exposing the terminal strips on the bottom of the
circuit board. Do not disconnect the circuit board wiring.
Connect the wires from the controller (power supply) to the supplied J4 plug then attach to J4 terminal.
See Figure 3 for locations
J4 PLUG –TERMINAL TO CONTROLLER WIRING
Position Function
1 + 24 VDC power
2 GND
3 4 - 20 mA out
4* RS-485 D+
5* RS-485 D–
*Contact ENMET for Modbus
Address information
Figure 3: Terminal Positions EX-5175-EC Sensor/Transmitter
When wiring is complete, reassemble the EX-5175-EC. Use caution when installing the overlay so as not to damage
the magnetic switches. Put the cover back on the S/T Do Not apply power to the S/T without the cover in place.
Sensor/Transmitter Enclosure
Cutawa
y
View
Printed Circuit Board
(PCB)
Display Overlay
Circuit Board Bottom View
5
4
3
2
1
J4
J8
1 2 3
Display Overlay Screws
(2 places)
Display Overlay Standoffs
(2 places)
Magnetic Switches
(2 places)
Magnetic Switches
(2 places)
Printed Circuit Board (PCB)
J4 and J8 Terminals are
located on the bottom
side of PCB
Display Overlay
Plug J4
To J4
Wires to
Controller
Display
EX-5175-EC ENMET Corporation
5
3.3 Start up
When the EX-5175-EC transmitter 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.
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 4.1.2 below.
3.3.1 Typical Start Up
When power is supplied to the EX-5175-EC, the S/T will display the following sequence of information:
NOTE:Software revision may cause variations of display output.
Example of Display Function
The instrument: Model EX-5175-EC
Note Toxic is not displayed
The instrument: Serial Number
The instrument: Software Revision
IF the right most character is a flashing W
The instrument is in Warm-up mode
This should last about 1 minute
The Signal Output is held at 4mA during warm-up
For Toxic Gas
The instrument: Normal Display Mode
Measurement of target Gas
IF the right most
character is a flashing CThe last calibration of the instrument was invalid
The instrument must be recalibrated
IF the right most
character is a flashing FThere is a sensor fault
EX-5175
74-1256
S/W X.X
0ppm
0ppmW
0ppmC
0ppmF
EX-5175-EC ENMET Corporation
6
4.0 Operation of the EX-5175-EC
It is best to have the EX-5175-EC transmitters powered up and operational for 24 hours before applying calibration or
test gas to them.
4.1 Normal Display Mode
When the EX-5175-EC 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 gas detected by the EX-5175-EC.The
red alarm and fault LEDs are not lit.
To advance through displays of operational information tap the magnet over the MENU button.
NOTE:Software revision may cause variations of display output.
See sequence of operational information below:
Display Measurement of the target gas
Tap the magnet over the MENU button
Display indicates Alarm 1 Set point
Tap the magnet over the MENU button
Display indicates Alarm 2 Set point
Tap the magnet over the MENU button
No Function for the
SELECT button
in this mode
Display indicates Alarm 3 Set point
Tap the magnet over the MENU button
Display indicates mA Span range
(Full Scale)
Tap the magnet over the MENU button
Display returns to gas measurement
Operational Display Flow Chart
4.1.1 Alarm Conditions EX-5175-EC
There are three alarm set points available. 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.
0PPM
A1: 10
SELECT
SELECT
MENU
MENU
A2: 20 SELECT
MENU
A3: 50 SELECT
MENU
mA: 100
SELECT
MENU
EX-5175-EC ENMET Corporation
7
5.0 Maintenance of the EX-5175-EC
CAUTION:Do not open the EX-5175-EC S/T in a classified area.
CAUTION:Do Not Attempt A Span Procedure Without Calibration Gas Applied to The Sensor; if this is done, the S/T is
forced into a calibration fault mode.
Magnetic switches control the MENU and SELECT functions. The MENU and SELECT switch locations are indicated on
the display panel, see Figure 3. The MENU switch is used to display the various menu options and make incremental
changes to numbers such as alarm points, calibrations gas, etc. The SELECT switch is used to select that option, set
zero or span digit. Most maintenance functions are controlled by simple taps of the supplied magnet on the transmitter
glass, below the MENU and SELECT boxes on the front panel.
5.1 Maintenance Menu
To enter the maintenance menu hold the magnet over the MENU switch for 2 to 4 seconds
Table 1 indicates the maintenance menu sequence see Figure 5 for a detailed maintenance menu flow chart.
Table 1: EX-5175-EC maintenance Menus Sequence
Example of Display Function
Normal Display Mode
Measurement of target gas
Hold the magnet over MENU switch for 2 – 5 seconds to enter the Maintenance Menu
The Power/Fault LED will flash Green – Red to indicate the EX-5175-EC is in Maintenance Mode
To exit the maintenance Menu and return to the Normal
Display Mode:
If intended function Tap the magnet over SELECT switch
Tap the magnet over the MENU switch to advance to the Zero procedure
For adjusting Zero:
If intended function Tap the magnet over SELECT switch
NOTE:Not applicable for Oxygen S/T.
Tap the magnet over the MENU switch to advance to the Span procedure
For adjusting the Span:
If intended function Tap the magnet over SELECT switch
Tap the magnet over the MENU switch to advance to each Alarm set point procedures
For adjusting the Alarm 1, 2 and 3 set points:
If Intended function Tap the magnet over SELECT switch
Tap the magnet over the MENU switch to advance the mA Span set point procedure
For adjusting the mA Span set point:
If intended function Tap the magnet over SELECT switch
Taping the MENU switch without taping the SELECT switch will allow you to cycle through the menu options.
You must Tap the SELECT switch in order to change the desired operation.
NOTE:If the S/T fails to respond, the magnet may have become weak and may need to be replaced.
5ppm
Exit
Zero
Span
mA Span
Alarm1
Alarm2
Alarm3
EX-5175-EC ENMET Corporation
8
Regulator
Gas Cylinder
Select
Menu
Output, for Gas
Input, for Calibration
or Optional Gas Sampling
Calibration Cover
5.2 Calibration of the EX-5175-EC
Calibration is the process of setting the instrument up to read accurately when exposed to a target gas. The Zero
function sets the clean air reference point and the Span function sets the sensitivity of the instrument.
Initial Calibration: Wait 24 hours after initially supplying power to the EX-5175-EC sensor/transmitter (S/T)
before initial calibration. The S/T has been precalibrated 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 magnets from outside the enclosure
through the MENU and SELECT switches. Do Not open the S/T unless the area is de-classified.
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 EX-5175-EC transmitters.
Calibration equipment is available from ENMET Corporation to calibrate the EX-5175-EC sensor/transmitters. A
calibration adapter will have a fitting for the gas cylinder on one side, and a cover to go over the sensor housing on the
other.
Generally, a cylinder of 20.9% Oxygen is used to provide a fresh air reference or Zero point for the calibration.
Another cylinder is used to provide the Span reference point for calibration. Depending on the instrument calibration,
the Span gas may be the same gas that the instrument is calibrated to display, or it may be another gas, which ENMET
has found to have a similar response.
NOTE:Zero function is Not applicable for Oxygen sensor/transmitters.
Figure 4: Calibration Adapter EX-5175-EC Sensor/Transmitter
Table 2: Examples of S/T ranges, alarm Points and Calibration Gas
Gas Range Alarm 1* Alarm 2* Alarm 3* Cal Gas
Ammonia 0 – 100 PPM 25 PPM 50 PPM 75 PPM 25 PPM NH3
Carbon Monoxide 0 – 500 PPM 35 PPM 50 PPM 200 PPM 100 PPM CO
Hydrogen 0 2000 PPM 200 PPM 500 PPM 1000 PPM 800 PPM H2
Hydrogen Sulfide 0 – 100 PPM 10 PPM 20 PPM 50 PPM 20 PPM H2S
Oxygen 0 – 30% by Vol 17% by Vol 19.5% by Vol 23.5% by Vol 20.5% by Vol
Sulfur Dioxide 0 – 300 PPM 20 PPM 50 PPM 100 PPM 100 PPM SO2
If not listed consult ENMET Distributor or ENMET Corp for additional information
*NOTE:These internal sensor/transmitter alarms are independent of the 4-20mA Controller alarm point settings.
EX-5175-EC ENMET Corporation
9
5.2.1 Zero Adjust
Zero function is Not applicable for Oxygen sensor/transmitters, go to Section 5.2.2 Gas Span.
A ZERO function should be performed only when the EX-5175-EC sensor/transmitter is exposed to fresh air. If the air
at the sensor is in question, use a cylinder of 20.9% oxygen to provide a clean air reference. Attach the cylinder to the
calibration adapter.
Enter the maintenance menu by placing the magnet over MENU switch for 2 to 4 seconds. See Figure 5, EX-5175-EC
Maintenance Menu flow chart.
The second menu available is the Zero.
Tap the SELECT switch to perform a Zero.
If the Zero is successful, Cal OK appears on the display and in 1 – 2 seconds, display will change to Span.
If you wish to Span the sensor Tap the SELECT switch you are now ready to apply gas. Proceed to gas span step 2
If you wish to Exit the maintenance menu, Tap MENU switch until Exit is displayed, then tap SELECT switch to
return to the instrument Normal Gas Display
If the Zero is Not successful, sensor is outside of safe parameters to be zeroed, the display will read Bad Zero.
Repeat Section 5.2.1 Zero Adjust making sure to use a cylinder of 20.9% Oxygen.
5.2.2 Gas Span
It is recommended that the Zero Function be performed first.
Enter the maintenance menu. See Figure 5, EX-5175-EC Maintenance Menu flow chart.
1. Tap the MENU switch once to show Span on the display.
2. Attach the associated calibration gas cylinder to the regulator and calibration cover. See Figure 4.
3. Open the valve to apply the calibration gas to the sensor, wait approximately 120 seconds(2 minutes)
4. Tap the SELECT switch to perform a Span procedure. The display will alternate between the calibration gas
concentration and a signal level.
5. Watch for the signal level to stabilize. Typical 2 – 4 minutes.
6. Once the signal level has stabilized, the EX-5175-EC will automatically lock in the calibration data and:
If the Span is successful, Cal OK appears on the display momentarily, then advances to Alarm 1. Remove
calibration gas. To exit maintenance menu tap the MENU switch until Exit appears, then tap the SELECT switch.
If the sensor is outside of acceptable parameters, Bad Span is displayed momentarily, then returns to Span.
Remove calibration gas. Tap the MENU switch until Exit appears, then tap the SELECT switch. Check span gas
and repeat calibration in 30 – 60 minutes.
If the sensor did not respond to gas, Same mV is displayed momentarily, then returns to Span.
Remove calibration gas, tap the MENU switch until Exit appears, then tap the SELECT switch and try
calibration again in 30-60 minutes.
If the sensor will not calibrate See Section 5.4.
NOTE:Some software revisions require the SELECT switch be tapped to accept the signal.
7. Calibration is complete.
5.2.3 Exit Maintenance Menu
Exit maintenance, by tapping on the MENU switch until Exit appears on the display. Tap the SELECT switch to return
to the instrument Normal Gas Display.
NOTE: You can change the Calibration Gas Level. HOLD the magnet over the SELECT switch for 2 – 4 seconds
The MENU switch changes digit indicated by underscore cursor
The SELECT switch locks underscored digit and moves to next digit
EX-5175-EC ENMET Corporation
10
Normal Display Mode
5ppm
M
ENU
H
OLD
the magnet over the M
ENU
switch for 2 – 4 seconds
to enter the Maintenance Menus
Exit
S
ELECT
Tap the S
ELECT
switch to return to the Normal
Display Mode.
See Section 5.2.3
M
ENU
Tap the magnet over the M
ENU
switch to cycle through Maintenance Menus
OR
Zero
Cal OK
I
f
the Zero signal is within Preset Specs the EX-5175-EC will
display Cal OK, See Section 5.2.1
If the Zero signal is not within Preset Specs the EX-5175-EC will
display Bad ZERO
N
OTE
:Some software revisions require the S
ELECT
switch be
tapped to accept the signal.
S
ELECT
M
ENU
Bad ZERO
PV: 0
S
ELECT
Tap the S
ELECT
switch to initiate Zero adjustment
A
pply Calibration Gas until signal value becomes
stable (about 1 to 4 minutes) See Figure 4
If cal is good display will indicate OK or Same
If cal is not within preset “range” display will
indicate Bad Sens
M
ENU
PV: 0
20
Cal OK
Same mV
Bad Sens
Span
S
ELECT
S
ELECT
OR
OR
N
OTE
: You can change the Calibration Gas Level.
H
OLD
the magnet over the S
ELECT
switch
The M
ENU
switch changes digit indicated by underscore cursor
The S
ELECT
switch locks underscored digit and moves to next digit
See Section 5.2.2
S
ELECT
mA Span
M
ENU
S
ELECT
100 To change mA Span set point:
Tap the M
ENU
switch until mA Span is displayed
Tap the S
ELECT
switch to display the set point
The M
ENU
switch changes digit indicated by underscore cursor
The S
ELECT
switch locks underscored digit and moves to next digit
To return to Normal Gas Display:
Tap M
ENU
switch until EXIT is displayed
Then tap S
ELECT
switch
Select
Menu
To change Alarm set points:
Tap Menu switch until Alarm to be changed is displayed
Tap Select switch to display the set point
The M
ENU
switch: changes digit indicated by underscore
cursor
The S
ELECT
switch: locks in the 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 Set Time Delay
Use M
ENU
and S
ELECT
switches as above to change time
delay. Between 0 and 5 seconds is allowed
If change is within range display moves to next menu
Λ- Indicates increasing alarm
V- Indicates decreasing alarm
SetTDsec
0
Alarm3
S
ELECT
Λ50
M
ENU
SetTDsec
0
Alarm1
M
ENU
S
ELECT
Λ10
SetTDsec
0
Alarm2
M
ENU
S
ELECT
Λ20
Figure 5: EX-5175-EC Maintenance Menu Flow chart
EX-5175-EC ENMET Corporation
11
5.3 Sensor Replacement
CAUTION:Area must be declassified during sensor replacement.
Sensors should be replaced when they can no longer be calibrated. Replacement sensor part numbers are listed in
Section 6.0 of this manual. If you do not know the proper part number for your sensor, be sure to have the EX-5175-
EC serial number available when contacting your Distributor or ENMET Corporation Technical Support.
To replace a sensor, it is not necessary to open the transmitter housing.
Turn off the sensor/transmitter.
Remove the set screw from sensor housing base.
Unscrew the sensor housing cover and remove Sensor/PC Board Assembly.
NOTE:Sensor and PC Board are attached and should not be separated from each other.
Place the new Sensor/PC Board Assembly into the sensor housing cover.
Reassemble the sensor housing.
Turn On the sensor/transmitter.
After the new sensor has been installed, it is suggested to allow the sensor to stabilize for 24 hours.
A Factory calibration must be performed.
Enter the Maintenance menu, see section 5.0, advance to the Zero menu. Then while viewing the Zero menu, hold the
magnet over the MENU switch for 2-4 seconds.
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.
Only perform a factory calibration when installing a new sensor!!
Figure 6: Sensor Replacement
Set Screw
(0.050 inch, 1.27mm Hex Key)
Sensor Housing Base
Sensor /P C Board
Assembly
Sensor Housing Cover
EX-5175-EC ENMET Corporation
12
6.0 Replacement Part Numbers
ENMET replacement part numbers:
Description Part Number
For EX-5175-EC p/n
Sensor: Oxygen
Carbon Monoxide
Hydrogen Sulfide
Ammonia
Sulfur Dioxide
67027-1100
67027-1200
67027-0200
67027-2400
67027-0500
Consult ENMET Distributor or ENMET Corp for additional sensors
Regulator Assembly, for 34/58/103cylinders 02506-002
Magnet 50030-001
Calibration/Sampling Adapter 03700-034
Regulator Assembly, for 17/34cylinders 02506-004
Calibration Gas, Consult ENMET Distributor or ENMET Corp.
7.0 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
80003-099
January 2008
MCN-418, 04/16/09
MCN-447, 05/24/11
MCN-459, 12/13/11
MCN-13-008, 11/06/13
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.
Repair Return Form
Mailing Address:
ENMET Corporation
PO Box 979
Ann Arbor, Michigan 48106
Phone Number: 734.761.1270
FAX Number: 734.761.3220
Shipping Address:
ENMET Corporation
Attn: Repair Department
680 Fairfield Court
Ann Arbor, Michigan 48108
Your Mailing Address:
Your Shipping Address:
Contact Name: __________________________ Your Phone: _______________________
Your PO/Reference Number: _______________ Your FAX: _______________________
Payment Terms: COD
(Check one) VISA / MasterCard______________________ ________ ________
Card number Expiration Card Code
American Express______________________ ________ ________
Card number Expiration Card Code
Name as it appears on the credit card___________________________________
Return Shipping Method:
UPS: Ground 3 Day Select Next Day Air ND Air Saver 2-Day Air
UPS Account number: ________________________
Federal Express: Ground Express Saver P-1 Standard 2-Day Air
FedEx Account number: ________________________
Would you like ENMET to insure the return shipment?
No Yes Insurance Amount: $_________________
Table of contents
Other ENMET Transmitter manuals
