MSA General Monitors S4100T User manual

MODEL S4100T
Hydrogen Sulphide
Smart Transmitter
Hydrocarbon Sulphide
Smart Transmitter
Hydrocarbon Sulphide
Smart Transmitter
Hydrocarbon Sulphide
Smart Transmitter
Hydrocarbon Sulphide
Smart Transmitter
Hydrocarbon Sulphide
Smart Transmitter
Hydrocarbon Sulphide
Smart Transmitter
Hydrocarbon Sulphide
Smart Transmitter
Hydrocarbon Sulphide
Smart Transmitter
Hydrocarbon Sulphide
Smart Transmitter
Hydrocarbon Sulphide
The information and technical data disclosed in this
document may be used and disseminated only for the
purposes and to the extent specifically authorized in
writing by General Monitors.
Instruction Manual 01/18
General Monitors reserves the right to change published
specifications and designs without prior notice.
Part No. MANS4100T-EU
Revision Q/01-18

Model S4100T
i
Warranty Statement
General Monitors warrants the Model S4100T to be free from defects in workmanship or
material under normal use and service within two (2) years from the date of shipment.
General Monitors will repair or replace without charge any equipment found to be
defective during the warranty period. Full determination of the nature of, and
responsibility for, defective or damaged equipment will be made by General Monitors’
personnel. Defective or damaged equipment must be shipped prepaid to General
Monitors’ plant or the representative from which shipment was made. In all cases this
warranty is limited to the cost of the equipment supplied by General Monitors. The
customer will assume all liability for the misuse of this equipment by its employees or
other personnel. All warranties are contingent upon proper use in the application for
which the product was intended and do not cover products which have been modified or
repaired without General Monitors’ approval or which have been subjected to neglect,
accident, improper installation or application, or on which the original identification marks
have been removed or altered. Except for the express warranty stated above, General
Monitors disclaims all warranties with regard to the products sold, including all implied
warranties of merchantability and fitness and the express warranties stated herein are in
lieu of all obligations or liabilities on the part of General Monitors for damages including,
but not limited to, consequential damages arising out of/or in connection with the use or
performance of the product.
Warnings
The instrument should be calibrated at least every 90 days. See sub-section 4.1.
Take note of sub-section 3.4 Sensor Poisons.
Install and maintain all hazardous area equipment in accordance with the relevant
regulations and practices of the country concerned. See Section 3 Installation.
The S4100T must be protected by in-line 500mA PC≥1500A Char “T” fuse is required if
voltage at unit is between 18VDC and 35VDC in the 24 VDC supply line. This is
necessary to fully comply with approval requirements and good installation practices.
Note: General Monitors series of Trip Amplifiers have the 500mA fuse as standard.
The S4100T must be protected by an in-line 63mA; PC1500A Char “F” fuse in the
analogue output line. This is necessary to fully comply with approval requirements and
good installation practices.
WARNING - Installation and Maintenance must be carried out by suitably skilled and
competent personnel only.

Model S4100T
ii
Table of Contents
Page
Warranty Statement i
Warnings i
Table of Contents ii
1.0 Introduction 1
1.1General Description .......................................................................................... 1
2.0 Specifications 2
2.1Approvals .......................................................................................................... 2
2.2Functional.......................................................................................................... 2
2.3Mechanical ........................................................................................................ 3
2.4Environmental ................................................................................................... 3
2.5Electrical............................................................................................................ 3
2.6Factory default settings ..................................................................................... 4
2.7Sensor Material and Specifications when connected to S4100T ..................... 4
2.8Outline Drawing................................................................................................. 5
3.0 Installation 6
3.1On Receipt of your Equipment.......................................................................... 6
3.2Smart Transmitter location Guidelines.............................................................. 6
3.3Sensor Poisons ................................................................................................. 7
3.4Interconnecting cable Guidelines...................................................................... 7
3.5Installation of Sensor ........................................................................................ 8
3.6Installation Instructions ..................................................................................... 8
3.6.1 Smart Transmitter Cable Termination................................................. 8
3.6.2 Cable Termination in Safe Area.......................................................... 9
3.6.3 Cable Termination Drawing .............................................................. 10
3.7Interconnection Details ................................................................................... 12
3.8Power up Routine (see also Section 4.5 and 4.6) .......................................... 12
3.9Stopping Plug Installation ............................................................................... 13
4.0 Operating Instructions ...................................................................................... 15
4.1Menu Operation and Display Codes ............................................................... 15
4.2Tables ............................................................................................................. 17
4.3Calibration ....................................................................................................... 19
4.4 New Sensor Calibration ................................................................................. 20
4.5Calibration Check............................................................................................ 21
4.6Power up Routine............................................................................................ 21
4.7Special Power up Routine............................................................................... 22

Model S4100T
iii
5.0 Maintenance 23
5.1Maintenance.................................................................................................... 23
5.2Storage............................................................................................................ 23
6.0 Trouble Shooting ............................................................................................... 24
6.1Fault codes and Remedies ............................................................................. 24
6.2Alarms ............................................................................................................. 25
6.3Modbus RTU Serial Interface problems.......................................................... 25
7.0 Ancillary Equipment .......................................................................................... 26
7.1Dust Guard Assembly (P/N 10110)................................................................. 26
7.2Sintered Stainless Steel Dust Guard (P/N 1800822-1) .................................. 26
7.3Splash Guard (P/N 10395-1) .......................................................................... 26
7.4Sensor Flow Chamber (P/N 10066)................................................................ 26
7.5Duct Mounting Plate (P/N 10041 Dash-1 or –2) ............................................. 27
7.6Field Calibrator (P/N 50000) ........................................................................... 27
7.7Ampoules of Hydrogen Sulphide (P/N 50004) ................................................ 28
7.8Portable Flow Calibrator Model 1400250 ....................................................... 28
8.0 Modbus RTU Serial Interface ............................................................................ 30
8.1General ........................................................................................................... 30
8.2Modbus Message Characteristics................................................................... 30
8.3Modbus Exception Codes ............................................................................... 30
8.4Modbus Read/Write - Commands................................................................... 31
8.5Modbus Register Configuration ...................................................................... 32
8.5.1 Register 3 .......................................................................................... 32
8.5.2 Register 7 .......................................................................................... 33
8.5.3 Register 9 .......................................................................................... 33
8.5.4 Register 10 ........................................................................................ 33
9.0 Appendix A 34
9.1Maximum Sensor Cable Length...................................................................... 34
9.2Maximum Smart Transmitter Cable Length .................................................... 34
Customer Satisfaction Questionnaire...........................................................................34

Model S4100T
1
1.0 Introduction
1.1 General Description
The General Monitors Model S4100T Smart Transmitter is a highly reliable, self
contained, microprocessor controlled, single point calibration Hydrogen Sulphide
monitor with integral 3-digit readout. The Transmitter is connected to the user’s
indicating and shut-down equipment by means of a screened and armoured cable.
The S4100T is designed to measure and display concentrations of Hydrogen Sulphide
in one of three ranges: 0 to 20ppm, 0 to 50ppm and 0 to 100ppm, but will continue to
display concentrations up to 120% of FSD.
No user adjustments are required. The instrument will record the number of successful
calibrations, compute the sensor resistance in kohm during calibration and store in non-
volatile memory, along with calibration and setup parameters.
The entire electronics modules is fully encapsulated in compliance with the relevant
standards.
The Smart Transmitter’s user interface is menu driven. In addition the instrument may
be addressed via the dual Modbus RTU serial interface.
The accuracy of the Smart Transmitter depends upon routine re-calibration which
should be carried out at least every 90 days. This procedure is extremely simple and
may be carried out by one person aided by prompts from the digital display. Calibration
may be completed in less than 5 minutes. All calibration parameters are tested by
advance software routines before being accepted. Any errors detected will be shown
on the digital display by means of an appropriate fault code.
Hydrogen Sulphide is an extremely dangerous gas. To ensure optimum performance
the sensors should be tested at frequent intervals, especially in areas where risk of
release or leakage is considered to be significant, or in conditions where the sensor
may become blocked or damaged by adverse environmental conditions.
General Monitors is recognised as a leader in the field of gas detection and a team of
experts is always available to provide advice or service as required.

Model S4100T
2
2.0 Specifications
2.1 Approvals
Hazardous Area Standards
EN 60079-0, EN 60079-7, EN 60079-18
Code of Protection
Ex emd IIC T5 Gb (-40C + 55C)
Ex emd IIC T4 Gb (-40C + 70C) Cable insulation rated to at least
110C
Application:
Hydrogen Sulphide Gas Monitor
2.2 Functional
Measuring Range:
0-20 ppm, 0-50 ppm and 0-100 ppm, user selectable option setup
Measuring Resolution
1 ppm
Over-range Indication:
Display flashes for readings greater than 99% FSD, but continues to
display gas concentration up to 120%
Calibration Level:
50% of selected measuring range
A1 Trip Level:
User selectable in 1 ppm increments
1 –19 ppm for 0-20 ppm Measuring Range, default 5 ppm
5 –45 ppm for 0-50 ppm Measuring Range, default 10 ppm
10 –60 ppm for 0-100 ppm Measuring Range, default 25 ppm
A1 Open Collector Output
User selectable Energised/De-energised and Latching/Non-latching
A2 Trip Level:
User selectable in 1 ppm increments
1 –19 ppm for 0-20 ppm Measuring Range, default 10 ppm
5 –45 ppm for 0-50 ppm Measuring Range, default 25 ppm
10 –95 ppm for 0-100 ppm Measuring Range, default 50 ppm
A2 Open Collector Output
User selectable Energised/De-energised and Latching/Non-latching
Fault Open Collector Output
Normally Energised
Analogue Output during Calibration
User selectable 0.0 mA, 1.5 mA and 2.0 mA
Modbus Baud Rate
User selectable 2400, 4800, 9600 and 19200 Baud
Modbus Format
User selectable 1/2 stopbits, odd/even/no parity, 8 databits
Modbus Node Address
User selectable 1 –255; Address 0 is recognised as broadcast mode
Stability, Long Term:
4 ppm or 10% of applied gas whichever is greater (over 21 days)
Accuracy (Linearity)
4 ppm or 10% of applied gas whichever is greater (10C to 50C)
Temperature Variation
4 ppm or 10% of applied gas whichever is greater (-50C to +70C)
Humidity Variation:
4 ppm or 10% of applied gas whichever is greater (5%RH –90% RH)
Response Time
T50< 30 seconds

Model S4100T
3
2.3 Mechanical
Height
150mm (6”)
Height incl. Sensor:
200mm (8”)
Width:
150mm (6”)
Depth:
95mm (3.75”)
Weight including Sensor:
2.5kg (5.5lbs)
Mounting Holes:
4 x 7 mm (0.28”) dia holes
Termination:
Ex e rated Terminal Block
2.4 Environmental
Operating temperature range (continuous) min/max
- 40C to + 70C
Storage temperature range min/max
- 50C to + 85C
Relative humidity min/max:
5% to 100%, non-condensing
Operating Altitude max:
8000 ft
Non-operating Altitude max:
16000 ft
EMI/RFI Susceptibility:
IP Rating:
IP66/67
2.5 Electrical
Supply voltage min/max:
(18.5 VDC / 35 VDC)
Supply voltage abs min/max:
18.5 VDC / 40 VDC
Supply voltage ripple & noise max.
1Vpp
Supply current consumption, including sensor typ/max:
140mA/200mA @ 24VDC
Supply fuse rating: 18VDC –35VDC operation
500mA Chart “T” PC 1500A
Supply voltage low detection threshold min/max:
9.20VDC / 10.32 VDC
Sensor Bias Current (Rsensor + Rcable = zero ohms) max: 420uA
Sensor Resistance range @ 50% FSD
3-80 kohms
Analogue Output Current Range:
0 –22.0mA
Analogue Output Current abs max:
22.1mA
Analogue Output Current Ripple and Noise max.
20uApp
Analogue Output Current Tolerance max:
±50uA
Analogue output termination resistance min/max:
(including total cable resistance)
0 –750 ohms
Analogue output open-circuit detection current range min/max: 1.0mA –22.0mA
Analogue output fuse rating:
63mA Char “F” PC 1500A
Remote calibration input Isink max
2.7mA
Remote calibration input Vin max:
24VDC
Open collector output Isink max
Note: Inductive loads require an external clamp diode
100mA
Open collector output Vin max:
35VDC
Open collector output Vdrop-out @ 100mA max:
1VDC
Meets
EN 50270
EN55011: ENV50204
EN 61000-4-2: EN 61000-4-4: EN 61000-4-6
EN 61000-4-3: EN 61000-4-5: EN 61000-4-8

Model S4100T
4
2.6 Factory default settings
Option
-5 (0-50 ppm)
A1 Trip Level
10 ppm
A1 Open Collector Output:
De-energised and non-latching
A2 Trip Level:
25 ppm
A2 Open Collector Output
De-energised and non-latching
Analogue output during calibration
1.5mA
Modbus Baud rate:
19200 Baud
Modbus Format:
1 stopbit, no parity, 8 databits
Modbus Node address;
1
2.7 Sensor Material and Specifications when connected to
S4100T
General Monitors Sensors (51457-X) are constructed from 316 Stainless Steel. The
temperature and classification becomes
Ex emd IIC T5 Gb (Tamb -40ºC to +55ºC)
Ex emd IIC T4 Gb (Tamb -40ºC to +70ºC) when the sensors are fitted to the S4100T
units only.

Model S4100T
5
2.8 Outline Drawing