User Manual
MAN-0010
March 2016
Electrochemical
H2S Detector
Used with ST1200 H2S Sensor
Important Instructions
This manual is provided for informational purposes only. Although the information contained in this manual is
believed to be accurate, it could include technical inaccuracies or typographical errors. Changes are, therefore,
periodically made to the information within this document and incorporated without notice into subsequent
revisions of the manual. Emerson assumes no responsibility for any errors that may be contained within this
manual.
This manual is a guide for the use of a Toxic Gas Transmitter and the data and procedures contained within this
document have been verified and are believed to be adequate for the intended use of the transmitter. If the
transmitter or procedures are used for purposes other than as described in the manual without receiving prior
confirmation of validity or suitability, Net Safety Monitoring Inc does not guarantee the results and assumes no
obligation or liability.
No part of this manual may be copied, disseminated or distributed without the express written consent of Emerson.
Emerson products, are carefully designed and manufactured from high quality components and can be expected to
provide many years of trouble free service. Each product is thoroughly tested, inspected and calibrated prior to
shipment. Failures can occur which are beyond the control of the manufacturer. Failures can be minimized by
adhering to the operating and maintenance instructions herein. Where the absolute greatest of reliability is
required, redundancy should be designed into the system.
MODEL: H2S-100ppm. Optional 50ppm, 20ppm and
Available in: 24Vdc Version / 12Vdc Version / 10 -
:
board
PE-EX-H2S-S)
ST1200-XXX sensor (supersedes
Assembly consists of
S housing (supersedes
XP-H
2
CB2 connector
32Vdc
10ppm
PE1200-XX-XXX)
JB2 junction
box
Limited Warranty
Resale Products
Limitation of Remedy and Liability
Warranty
1.
Remedy and Liability) herein, Seller warrants that (a) the licensed firmware embodied in
the Goods will execute the programming instructions provided by Seller; (b) that the
Goods manufactured by Seller will be free from defects in materials or workmanship
under normal use and care; and (c) Services will be performed by trained personnel using
proper equipment and instrumentation for the particular Service provided. The
foregoing warranties will apply until the expiration of the applicable warranty period.
Sensors and detectors are warranted against defective parts and workmanship for 24
months from the date of purchase and other electronic assemblies for 36 months from
the date of purchase. Products purchased by Seller from a third party for resale to Buyer
(
Buyer agrees that Seller has no liability for Resale Products beyond making a reasonable
commercial effort to arrange for procurement and shipping of the Resale Products. If
Buyer discovers any warranty defects and notifies Seller thereof in writing during the
applicable warranty period, Seller shall, at its option, (i) correct any errors that are found
by Seller in the firmware or Services; (ii) repair or replace FOB point of manufacture that
portion of the Goods found by Seller to be defective; or (iii) refund the purchase price of
the defective portion of the Goods/Services. All replacements or repairs necessitated by
inadequate maintenance; normal wear and usage; unsuitable power sources or
environmental conditions; accident; misuse; improper installation; modification; repair;
use of unauthorized replacement parts; storage or handling; or any other cause not the
fault of Seller, are not covered by this limited warranty and shall be replaced or repaired
at Buyer’s sole expense and Seller shall not be obligated to pay any costs or charges
incurred by Buyer or any other party except as may be agreed upon in writing in advance
by Seller. All costs of dismantling, reinstallation, freight and the time and expenses of
Seller’s personnel and representatives for site travel and diagnosis under this limited
warranty clause shall be borne by Buyer unless accepted in writing by Seller. Goods
repaired and parts replaced by Seller during the warranty period shall be in warranty for
the remainder of the original warranty period or 90 days, whichever is longer. This
limited warranty is the only warranty made by Seller and can be amended only in a
writing signed by an authorized representative of Seller. The limited warranty herein
ceases to be effective if Buyer fails to operate and use the Goods sold hereunder in a safe
and reasonable manner and in accordance with any written instructions from the
manufacturers. THE WARRANTIES AND REMEDIES SET FORTH ABOVE ARE EXCLUSIVE.
THERE ARE NO REPRESENTATIONS OR WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED,
AS TO MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE OR ANY OTHER MATTER
WITH RESPECT TO ANY OF THE GOODS OR SERVICES.
. Subject to the limitations contained in Section 10 (Limitation of
) shall carry only the warranty extended by the original manufacturer.
2.
BY DELAY IN PERFORMANCE. THE REMEDIES OF BUYER SET FORTH IN THE AGREEMENT
ARE EXCLUSIVE. IN NO EVENT, REGARDLESS OF THE FORM OF THE CLAIM OR CAUSE OF
ACTION (WHETHER BASED IN CONTRACT, INFRINGEMENT, NEGLIGENCE, STRICT
LIABILITY, OTHER TORT OR OTHERWISE), SHALL SELLER’S LIABILITY TO BUYER AND/OR
BUYER’S CUSTOMERS EXCEED THE PRICE TO BUYER OF THE SPECIFIC GOODS
MANUFACTURED OR SERVICES PROVIDED BY SELLER GIVING RISE TO THE CLAIM OR
CAUSE OF ACTION. BUYER AGREES THAT IN NO EVENT SHALL SELLER’S LIABILITY TO
BUYER AND/OR BUYER’S CUSTOMERS EXTEND TO INCLUDE INCIDENTAL,
CONSEQUENTIAL OR PUNITIVE DAMAGES. THE TERM “CONSEQUENTIAL DAMAGES”
SHALL INCLUDE, BUT NOT BE LIMITED TO, LOSS OF ANTICIPATED PROFITS, REVENUE OR
USE AND COSTS INCURRED INCLUDING WITHOUT LIMITATION FOR CAPITAL, FUEL AND
POWER, AND CLAIMS OF BUYER’S CUSTOMERS.
. SELLER SHALL NOT BE LIABLE FOR DAMAGES CAUSED
User Manual Table of Contents
Table of Contents i
MAN-0010 March 2016
Contents
Section 1: Description ............................................................. ii
Section 2:
Features
................................................................. 3
Section 3: Specifications ......................................................... 5
Section 4: Sensor operation .................................................... 7
4.1 Sensing element .............................................................................................. 7
4.2 Sensor output .................................................................................................. 7
Section 5: Installation ............................................................. 9
5.1 Detector positioning ........................................................................................ 9
5.2 Wiring requirements........................................................................................ 9
5.3 Sensor wiring .............................................................................................. 10
Section 6: Startup procedure ................................................. 14
Section 7:
Section 8:
8.1 Sensing element replacement ....................................................................... 18
Calibration
............................................................ 16
Maintenance
........................................................ 18
Section 9: Troubleshooting ................................................... 20
Section 10: Spare parts .......................................................... 22
Appendix A: Electrostatic sensitive device handling
procedure
........................................................................... 24
Appendix B: Wire Resistance in Ohms ................................... 26
List of Tables User Manual
List of Tables ii
March 2016 MAN-0010
List of Tables
Table 4-1 Cross sensitivity of electrochemical sensor to 100 ppm concentrations ......... 7
Table 5-1 Maximum wiring distances from sensor to controller/transmitter ................ 10
Table 9-1 Troubleshooting guide ................................................................................ 20
User Manual Description
List of Figures iii
MAN-0010 March 2016
List of Figures
Figure 3-1 H2S Detector assembly .................................................................................. 6
Figure 5-1 Sensor wiring ............................................................................................... 11
User Manual Description
Description 1
MAN-0010 March 2016
Section 1: Description
T he Net Safety M onitoring Inc. H 2S-X X X -X X electrochem ical H ydrogen Sulfide (H 2S) gas
detector consists of an explosion-proof enclosure, electronic circuitry and an
electrochem ical H
monitoring of hydrogen sulphide (H
20 or 10 parts per m illion (ppm ). T he detector can be used with one of the Net Safety
M onitoring Inc. U ni-T rol™ C ontrollers or with other devices that are capable of m
onitoring a 4 to 20 m A dc inpu
he explosion-proof detector is C SA certified for use in hazardous locations.
S sensing elem ent. This H 2S sensor provides continuous
2
S) concentrations in the range of 0 to 100, 50,
2
t and provide for calibration of the incom ing signal. T
Description User Manual
Description 2
March 2016 MAN-0010
User Manual Features
Features 3
MAN-0010 March 2016
Section 2:
• Electrochem ical sensor for increased accuracy, repeatability and reliability.
• H igh specificity to H
• T em perature com pe ns ation to ens ure cons istent perform ance over the entire operating tem
perature range.
• Self-contained transm itter circuitry perm its use w ithout a separate controller.
• Explosion-proof housing.
• EM I/R FI protected.
Features
S reduces the chance of false alarm s caused by other gases.
2
Features User Manual
Features 4
March 2016 MAN-0010
User Manual Specifications
Specifications 5
MAN-0010 March 2016
Section 3: Specifications
• Operating R ang
o 0 to 100 ppm
o Optional 0-50ppm , 0-20ppm and 0-10 ppm m odels available
• R esponse T im
o 20% full range within 12 seconds
o 50% full range within 30 seconds
N ote: When H
ri
ft:
• D
•
•
o Less than 2 ppm per m onth
Accu
racy:
o ±10 percent of applied gas conc entration or ±3 ppm , whichever is
greater
Sen
sor Life:
o C om m only 2 to 4 years
e:
e:
S concentration equal to full scale is applied
2
• Operating
o 10 to 32Vdc. 24Vdc nom inal
• T
• H um idity R ang
• Ce
•
• D imension
em
o O peration: -40 °F to 122 °F (-40 °C to 50 °C)
o Recom m ended Storage: 32 °F to 68 °F (0 °C to 20 °C )
o 15 to 90% R H , non-condensing
rtificati
o C SA certified, Class 1, Division 1, G roups C & D
Enclosure M ate
o Anodized alum inum or optional stainless steel
o R efer to Figure 3-1.
Voltage:
perature Ran
on:
s:
ge:
e:
ria
l:
Specifications User Manual
Specifications 6
March 2016 MAN-0010
Shipping W
•
o H ousing: 2.5 pounds (1.1 kilogram s
o Sensing elem ent: 0.2 pounds (0.1 kilogram s)
Figure 3-1 H2S Detector assembly
eight (Approxim ate):
User Manual Sensor Operation
Sensor Operation 7
MAN-0010 March 2016
Section 4: Sensor Operation
4.1 Sensing element
T he electrochem ical sensing elem ent uses capillary diffusion barrier technology for
detecting the presence of hydrogen sulphide gas. T he electrochem ical sensing elem ent
provides im proved accuracy, reliability and extended calibration intervals when com
pared to ordinary solid-state type sensors.
T he response of the sensing elem ent is highly specific to H
only encountered gases have little, if any, effect on the electrical response of the
sensor, false indications caused by the presence of these gases is greatly reduced.
Below is a list of responses of the H
concentrations of other gases.
Table 4-1 Cross sensitivity of electrochemical sensor to 100 ppm concentrations
0ppm
HC
C
2H 4
< 1ppm
CO
N O
H 2
HCl
4.2 Sensor output
The sensor housing contains circuitry for generating a 4 to 20 m A dc output signal
corresponding to levels of H
10ppm m odels available by special order). T he 4 to 20 m A output is an un-calibrated
signal, therefore, calibration capabilities m us t be provided by a transmitter, controller or
display module to be used with the sensor.
S. S ince m any com m
2
S electrochem ical sensor to 100 ppm
2
<15ppm
SO 2
H
2
S from 0 to 100 ppm (optional 0-50ppm , 0-20ppm and 0-
2
<-30ppm
NO 2
-20ppm
Cl2
T he sensor m ay be calibrated externally by rem oving it from the housing and placing it in
a calibration appliance for adjustm ent. Consult your distributor.
Sensor Operation User Manual
Sensor Operation 8
March 2016 MAN-0010
User Manual Installation
Installation 9
MAN-0010 March 2016
Section 5: Installation
The electrochemical sensor contains semiconductor devices that are sensitive to
electrostatic discharge. H andle the device by the housing , taking care not to touch
electronic components or terminals. Refer to 'Electrostatic Sensitive Device Handling
Procedure' in the Appendix for further details.
5.1 Detector positioning
Proper detec tor positioning is essential for providing maximum protection. The most
effective number and placem ent of sensors varies depending on the conditions at the job
site. The individual perform ing the installation must rely on experience and common
sense to determine the number of detectors needed and the best detector location.
The finest detection system is of little value if the H2S gas cannot readily com e in contact
with the sensor. First priority should be placing the sensor where the highest
concentration of gas is anticipated.
The following factors are important and should be considered for every installation:
Since hydrogen sulfide is heavier than air, it will tend to settle near the floor or ground,
unless it is heated, m ixed with other gases that are lighter than air, or prevented from
settling by air m ovem ent.
Consider how rapidly the H
close as practical to an anticipated source.
S will diffuse into the air. Select a location for the sensor as
2
Consider ventilation characteristics of the immediate area. Air movem ent will cause the
gas to becom e m ore concentrated in some areas than others. Always place the sensors
where the m ost concentrated accumulation of hydrogen sulfide gas is anticipated. Also
consider the fact that some ventilation systems do not operate continuously.
Locate the sensor away from potential sources of contamination (dirt, etc.) if possible.
The sensor should be installed with the flame arrestor pointing down (refer to Figure 3-1)
to prevent build-up of contaminants and enhance weather resistance. The sensor must be
accessible for testing and calibration.
Exposure to excessive heat or vibration can cause premature failure of electronic devices
and should be avoided if possible. Shielding the device from intense sunlight will reduce
solar heating and may increase the life of the unit.
5.2 Wiring requirements
T wo wire cable is used for connecting the sensor to a transm itter, controller, or display
m odule. T he use of shielded cable is highly recom m ended to protect against
interference caused by extraneous electrical "noise."
Installation User Manual
Installation 10
March 2016 MAN-0010
T he m axim um distance between the sensor and controller is lim ited by the resistance
of the connecting wiring, which is a function of the gauge of the wire used. See table
below for the m axim um wiring distance for a given wire size. If a transm itter is used,
refer to the transm itter m anual for specific wiring instructions.
Table 5-1 Maximum wiring distances from sensor to controller/transmitter
W ire Size
(AW G )
18 5700 1750
16 9000 2800
5.3 Sensor wiring
1. Determine the best mounting locations for the sensors.
2. Mount the sensor junction box, allowing room between the junction box and the
mounting surface for the sensor and calibration cup. T he junction box should be
electrically connected to earth ground
3. R em ove the cover from the junction box.
Do not apply power to the system with the junction box cover removed unless the area has
been declassified.
4. Remove the cap from the sensor housing.
5. Remove the sensing element assembly from the packaging. Determine proper
orientation for the assembly, then carefully plug it into the sensor housing.
M axim um Senso r T o C on troller D ist
Feet M eters
ance
H andle the sensing elem ent assembly carefully. To avoid p ossible dam age,observe the
normally accepted procedures for handling electrostatic sensitive devices. Refer to
'Electrostatic Sensitive Device Handling Procedure" in the Appendix for further
information.
6. Place the cap back on the sensor housing.
7. Thread the sensor housing into the junction box. The sensor should be tight to
ensure an explosion proof housing, but do not over tighten. CSA requires 5 full
threads engaged.
Coat sensor threads with an appropriate grease to ease installation. Lubricate the junction
box cover threads and O -R ing to ensure a water-tight enclosure.
8. Connect the sensor wires to the sensor terminals inside the junction box. Connect
the controller wiring to the controller wiring terminal block. R efer to Figure 5-1
on the next page. C onnect the shield to earth ground at the controller end only.
Under normal conditions, the other end of the shield should not be connected at
the sensor junction box unless such a connection is required by local wiring codes.
Do not over tighten.
User Manual Installation
Installation 11
MAN-0010 March 2016
Wiring Code:
Red lead: +24V dc, (+12V dc version dependent)
Black lead: signal
Green lead: Chassis (earth) ground
9. Check the sensor wiring to ensure proper connections. Place the cover back on
the junction box.
Figure 5-1 Sensor wiring
F
i
g
u
r
e
2
-
S
e
n
s
o
r
W
i
r
i
n
g
Installation User Manual
Installation 12
March 2016 MAN-0010
User Manual Installation
Installation 13
MAN-0010 March 2016
Startup Procedure User Manual
Startup Procedure 14
March 2016 MAN-0010
Section 6: Startup Procedure
1. Secure output loads that are actuated by the system to prevent activation of these
devices.
2. Check all wiring for proper connection. Be sure that the sensor has been wired
properly.
3. Apply power to the system and allow the sensor to operate for about an hour,
then perform the "Start-up Procedure" and "C alibration Procedure" as outlined in
the transmitter, controller, or display m odule manual.
4. Place the system in norm al operation.
User Manual Startup Procedure
Startup Procedure 15
MAN-0010 March 2016
Calibration User Manual
Calibration 16
March 2016 MAN-0010
Section 7:
Since each application is different, the length of tim e between regularly scheduled
calibrations can vary from one installation to the next.
Calibration must be performed when:
• a new system is initially put into service
• the sens ing elem ent is replac ed
• a transm itter or controller used with the sensor is replaced.
Do not use ampules and dilution bottles for calibration. Use certified bottled gas. To
ensure adequate protection, the H
scheduled basis.
It is recom m ended that the sensor be calibrated one hour after power-up and calibration
should be checked every 30 days thereafter and re-calibrated if necessary. Consult the
controller m anual for proper calibration procedure.
It is acceptable to use ampules and dilution bottles for checking sensor response but not
for calibration. Use bottled gas for calibration. Bottled gas has a limited shelf life. Be sure it
is fresh.
Calibration
S detection system m ust be calibrated on a regularly
2
User Manual Calibration
Calibration 17
MAN-0010 March 2016
Maintenance User Manual
Maintenance 18
March 2016 MAN-0010
Section 8:
Maintenance
To ensure reliable protection it is im portant to check and calibrate the H
system on a regularly scheduled basis. The frequency of these checks will vary depending
on conditions such as relative humidity, dirty or dusty environm ents and exposure to H
Relative humidity is an important factor in the life expectancy of a sensor. Constant
exposure to extremely dry conditions will shorten the sensor life. If possible, sensors that
are operated in extremely dry areas should periodically be rotated to more humid
environments in order to re-hydrate. A sensor that has been exposed to extremely dry
environments and can no longer be spanned during calibration or has low sensitivity can
be treated. The sensor should be placed in a moistened sealed bag and put in the
refrigerator for 24 to 48 hours. D o not freeze. If this does not restore norm al response the
sensor m ust be replaced.
A rain shield/dust cover such as the C C S-1 should be used when the sensor m ay be
exposed to rain, water splash or dust. Be aware that ice and snow build-up could block gas
from entering the sensor.
8.1 Sensing element replacement
The sensing element assembly is not intended to be repaired. When calibration can no
longer be perform ed properly, the assem bly must be replaced. Spare sensing elem ent
assem blies should be kept on-hand for field replacem ent.
S detection
2
S.
2
Care should be taken in storing spare sensing elements. For maximum protection against
contamination and deterioration, sensing elements should not be removed from the
original protective pack aging until the time of installation. T o ensure maximum storage
life, sensing elements should be stored at a temperature beetween 40 °F and 68 °F (5 °C
and 20 °C) and a relative hum idity between 15 and 90 percent. A typical refrigerator is a
good place for storage. Do not freeze. Storage tim e should be limited to 6 months or less.
The area must be de-classified or power to the detector m ust be removed prior to
replacing the sensing element in a hazardous area.
To replace the sensing element in the H
1. Remove power from the detector.
2. Remove the cap from the detector housing.
3. Remove and discard the old sensing elem ent assembly. Check for corrosion or
contamination on the terminals inside the sensor enclosure; clean if necessary.
4. Determ ine the proper orientation for the new assembly, then carefully plug it in
Handle the sensing element assembly carefully. To avoid p ossible damage,observe the
normally accepted proced ures for handling electrostatic sensitive devices. Refer to
'Electrostatic Sensitive Device Handling Procedure" for further information.
S-XXX -XX detec tor:
2
User Manual Maintenance
Maintenance 19
MAN-0010 March 2016
5. Place the cap back on the detector housing. Tighten only until snug; do not over
tighten.
6. Re-apply power.
7. Allow tim e for the sensor to warm -up (approxim ately one hour for best results),
then calibrate. Always calibrate after replacing the sensing element.
The sensing element contains an acid that can leak. If a leakage should occur, handle the
assembly carefully to prevent any acid from contacting the skin. If acid should come in
contact with the skin, wash the affected area thoroughly w ith soap and water. Never
attempt to open the sensing element.
Troubleshooting User Manual
Troubleshooting 20
sensor.
March 2016 MAN-0010
Section 9: Troubleshooting
Table 9-1 Troubleshooting guide
Problem Recommendation
No 4 - 20 mA
output
Fluctuating
current output
Cannot zero
during
calibration
Cannot span
during
calibration
Low sensitivity 1. Sensor may have been exposed to an extremely dry environment.
1. Check the 10 to 32 power input.
2. Check that the green LED on the sensor circuit board is on. If off,
check wiring, especially the polarity. Also check for proper
connection at the sensor terminals in the junction box.
1. Check that all connections are good.
2. Check for AC noise interference on the cable. If noise
does appear, contact your local distributer for assistance.
1. If used with a transmitter, controller, or display module, check
for AC noise on the cable. If noise does appear, contact your
local distributor.
2. Check current output from sensor by opening the loop or
checking voltage across series resistor on term inal board. If
output from sensor is too low (approx. 2.8 m A or le s), replac e
1. If the current output from the sens or is low the sensor may
have been exposed to an extrem ely dry environm ent. R efer to
Maintenance to rehydrate.
2. If output from sensor is too low replac e sensor.
R efer to Maintenance.
2. Check for a dirt deposit or other obstruction of the flame arrestor.
Clean if necessary. Use a rain shield/dust cover if necessary.
User Manual Troubleshooting
Troubleshooting 21
MAN-0010 March 2016
Spare Parts User Manual
Spare Parts 22
March 2016 MAN-0010
Section 10: Spare Parts
• X P-H 2S housing
• ST 1200-100 ppm sensor
• ST 1200-50ppm sensor
• ST 1200-20ppm sensor
• ST 1200-10ppm sensor
• JB2 junction box
• C B2 connector board
User Manual Spare Parts
Spare Parts 23
MAN-0010 March 2016
Appendix A: Electrostatic Sensitive Device Handling Procedure User Manual
Appendix A: Electrostatic Sensitive Device Handling Procedure 24
March 2016 MAN-0010
Appendix A: Electrostatic Sensitive Device Handling Procedure
With the trend toward increasingly widespread use of microprocessors and a wide variety
of other electrostatic sensitive semiconductor devices, the need for careful handling of
equipm ent containing these devices deserves m ore attention than it has received in the
past.
Electrostatic damage can occur in several ways. T he most familiar is by physical contact.
Touching an object causes a discharge of electrostatic energy that has built up on the skin.
If the charge is of sufficient magnitude, a spark will also be visible. This voltage is often
more than enough to damage som e electronic components. Som e devices can be
damaged without any physical contact. Exposure to an electric field can cause damage if
the electric field exceeds the dielectric breakdown voltage of the capacitive elements
within the device.
In som e cases, permanent damage is instantaneous and an immediate malfunction is
realized. Often, however, the sym ptom s are not immediately observed. Performance m
ay be marginal or even seemingly normal for an indefinite period of time, followed by a
sudden and mysterious failure.
Damage caused by electrostatic discharge can be virtually eliminated if the equipment is
handled only in a static safeguarded work area and if it is transported in a package or
container that will render the necessary protection against static electricity. Emerson
modules that might be damaged by static electricity are carefully wrapped in a static
protective material before being packaged. Foam packaging block s are also treated with
an anti-static agent. If it should ever becom e necessary to return the module, it is highly
recommended that it be carefully packaged in the original carton and static protective
wrapping.
Since a static safeguarded work area is usually impractical in most field installations,
caution should be exercised to handle the module by its metal shields, taking care not to
touch electronic com ponents or terminals.
In general, always exercise all of the accepted and proven precautions that are normally
observed when handling electrostatic sensitive devices.
A warning label is placed on the packaging, identifying those units that use electrostatic
sensitive semiconductor devices.
User Manual Appendix A: Electrostatic Sensitive Device Handling Procedure
Appendix A: Electrostatic Sensitive Device Handling Procedure 25
MAN-0010 March 2016
* P ublished in Acco rdan ce with E1A s tand ard 4 71
i
Appendix B: Wire Resistance in Ohms User Manual
Appendix B: Wire Resistance in Ohms 26
March 2016 MAN-0010
Appendix B: Wire Resistance in Ohms
Distance
A
(feet)
100 1.02 0.64 0.40 0.25 0.16 0.10 0.06
200 2.03 1.28 0.08 0.51 0.32 0.20 0.13
300 3.05 1.92 1.20 0.76 0.48 0.30 0.19
400 4.06 2.55 1.61 1.01 0.64 0.40 0.25
500 5.08 3.20 2.01 1.26 0.79 0.50 0.31
600 6.09 3.83 2.41 1.52 0.95 0.60 0.38
700 7.11 4.47 2.81 1.77 1.11 0.70 0.44
800 8.12 5.11 3.21 2.02 1.27 0.80 0.50
W G #20 A
W G #18 A
W G #16 A
W G #14 A
W G #12 A
W G #10 A
W G #8
900 9.14 5.75 3.61 2.27 1.43 0.90 0.57
1, 000 10.20 6.39 4.02 2.53 1.59 1.09 0.63
1, 250 12.70 7.99 5.03 3.16 1.99 1.25 0.79
1, 500 15.20 9.58 6.02 3.79 2.38 1.50 0.94
1, 750 17.80 11.20 7.03 4.42 2.78 1.75 1 .10
2, 000 20.30 12.80 8.03 5.05 3.18 2.00 1 .26
2, 250 22.80 14.40 9.03 5.68 3.57 2.25 1 .41
2, 500 25.40 16.00 10.00 6.31 3 .97 2.50 1.57
3, 000 30.50 19.20 12.00 7.58 4 .76 3.00 1.88
3, 500 35.50 22.40 14.10 8.84 5 .56 3.50 2.21
4, 000 40.60 25.50 16.10 10.00 6.35 4.00 2.51
4, 500 45.70 28.70 18.10 11.40 7.15 4.50 2.82
5, 000 50.10 32.00 20.10 12.60 7.94 5.00 3.14
5, 500 55.80 35.10 22.10 13.91 8.73 5.50 3.46
6, 000 61.00 38.30 24.10 15.20 9.53 6.00 3.77
6, 500 66.00 41.50 26.10 16.40 10.30 6.50 4.08
7, 000 71.10 44.70 28.10 17.70 11.10 7.00 4.40
7, 500 76.10 47.90 30.10 19.00 12.00 7.49 4.71
8, 000 81.20 51.10 23.10 20.20 12.70 7.99 5.03
9, 000 91.40 57.50 36.10 22.70 14.30 8.99 5.65
10, 000 102.00 63.90 40.20 25.30 15.90 9.99 6.28
User Manual Appendix B: Wire Resistance in Ohms
Appendix B: Wire Resistance in Ohms 27
MAN-0010 March 2016
Resistance shown is one way. This figure should be doubled when determining closed loop
resistance.
Appendix B: Wire Resistance in Ohms User Manual
Appendix B: Wire Resistance in Ohms 28
March 2016 MAN-0010
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MAN-0010
Revision A
2016
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ASIA PACIFIC
Emerson Process Management
Asia Pacific Private Limited
1 Pandan Crescent
Singapore 128461
Republic of Singapore
T + 65 6 777 8211
F + 65 6 777 0947
SAFETY.CSC@Emerson.com
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