LumaSense technologies 1303 User manual

User Manual for
1303 Multipoint Sam-
pler and Doser
BE1085-13

Index
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Index
Index............................................................................................................................................................................................2
1303 Multipoint Sampler and Doser.................................................................................................................................4
Safety Considerations....................................................................................................................................................5
Chapter 1 Description and Functions..............................................................................................................................7
1.1 Description and Functions................................................................................................................................8
1.1.1 The Sampler System..................................................................................................................................9
1.1.2 The Doser System.......................................................................................................................................9
1.1.3 Front Panel...................................................................................................................................................10
1.1.4 Rear Panel.....................................................................................................................................................11
Chapter 2 Preparing to Use the 1303...........................................................................................................................13
2.1 Preliminary ...........................................................................................................................................................14
2.1.1 Environment and Handling.....................................................................................................................14
2.1.2 Connecting the Mains Supply................................................................................................................14
2.2 System Use..........................................................................................................................................................15
2.2.1 Connecting the 1303 to the System Controller..............................................................................16
2.2.2 Setting the Interface Address of the 1303.......................................................................................16
2.3 Connecting Tubing to the 1303....................................................................................................................18
2.3.1 Connecting Sampling and Dosing Tubing.........................................................................................19
2.3.2 Connecting External Filters to the Sampling Tubes......................................................................20
2.3.3 Connecting a Tracer Gas Supply..........................................................................................................21
2.3.4 Connecting the Sampler Outlet to the Gas Monitor......................................................................22
2.3.5 Waste Air Outlet.........................................................................................................................................22
2.4 Connecting Temperature Transducers to the 1303..............................................................................23
Chapter 3 Operation............................................................................................................................................................24
3.1 Switching-On.......................................................................................................................................................25
3.2 General Principles of Controlling the 1303...............................................................................................25
3.2.1 Syntax for Interface Jobs........................................................................................................................25
3.2.2 Output Jobs – Requesting Information from the 1303................................................................28
3.3 Installing Set-up Parameters ........................................................................................................................29
3.3.1 The Dosing Time-out Parameter..........................................................................................................30
3.3.2 The Characteristic Gas Constant Parameter....................................................................................30
3.3.3 The Calibration Data Parameter...........................................................................................................31
3.4 Calibrating the Doser System.......................................................................................................................32
3.5 Using the Sampler System.............................................................................................................................34
3.6 Using the Doser System..................................................................................................................................35
3.6.1 The Dosing System...................................................................................................................................35
3.6.2 Opening the Main Dosing Valve ...........................................................................................................35
3.6.3 Starting Continuous Dosing...................................................................................................................36
3.6.4 Starting Discontinuous Dosing..............................................................................................................37
3.6.5 Calculating the Dosage Delivered........................................................................................................38
3.7 Temperature Measurement............................................................................................................................38
3.8 Checking the 1303............................................................................................................................................39
3.8.1 Sampling_Pump_Pressure? Interface Job........................................................................................39
3.8.2 Dosing_Pump_Pressure? Interface Job.............................................................................................39
3.8.3 Status? Interface Job ...............................................................................................................................39
3.8.4 Check_System Interface Job.................................................................................................................41
3.8.5 Reset_System Interface Job..................................................................................................................41
3.9 Error Conditions and Service Requests.....................................................................................................41
3.9.1 The Status Byte..........................................................................................................................................42
3.9.2 Enabling Service Requests.....................................................................................................................42
3.9.3 Resetting the Status Byte.......................................................................................................................43
3.9.4 The Warning? Interface Job...................................................................................................................43
3.9.5 The Error? Interface Job .........................................................................................................................46
Chapter 4 The IEEE/IEC Interface and Interface Job Overview.........................................................................48
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Index
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4.1 Introduction.........................................................................................................................................................49
4.1.1 IEEE Functions Implemented in the 1303........................................................................................49
4.2 Overview of 1303 Interface Jobs.................................................................................................................50
4.2.1 Set-up Jobs..................................................................................................................................................51
4.2.2 Sampler System Jobs...............................................................................................................................52
4.2.3 Doser System Jobs....................................................................................................................................52
4.2.4 Temperature Measurement Jobs..........................................................................................................53
4.2.5 1303 Check Jobs........................................................................................................................................54
4.2.6 Error Condition and Service Request Jobs.......................................................................................54
4.2.7 Standardised Jobs......................................................................................................................................55
Chapter 5 Service and Repair..........................................................................................................................................57
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1303
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1303 Multipoint Sampler and Doser
August 2008
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Safety Considerations
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Safety Considerations
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SAFETY CONSIDERATIONS
PLEASE READ THESE SAFETY CONSIDERATIONS CAREFULLY
AND MAKE SURE YOU UNDERSTAND THEM PROPERLY BE-
FORE YOU START OPERATING THE MULTIPOINT SAMPLER
AND DOSER TYPE 1303.
EXPLOSION HAZARD
THE MULTIPOINT SAMPLER AND DOSER TYPE 1303 IS NOT DE-
SIGNED FOR USE IN POTENTIALLY EXPLOSIVE ENVIRONMENTS.
This means that the instrument must not be placed and operated in an
area with a potentially explosive atmosphere.
When monitoring potentially flammable or toxic gases it is essential that:
1) the instrument itself is placed in a well-ventilated area outside the
potentially hazardous zone; and
2) that a sufficiently long tube is connected to the “Sampler Waste Air
Outlet” so that the sampled gas is carried away to the open air or to
an extraction and/or filtration unit.
TO AVOID THE POSSIBILITY OF AN EXPLOSION, MONITORING OF
FLAMMABLE GASES IN EXPLOSIVE CONCENTRATIONS MUST NEVER
BE ATTEMPTED.
AVOID WATER CONDENSATION IN THE INSTRUMENT.
Liquids must be prevented from entering the instrument. It is therefore
important that warm humid gases are not drawn into a cold instrument
because condensation will take place. If such a situation is likely to occur
you should ensure that the gases are drawn through a water-trap filter
before they enter the sampler channels of the 1303. This will condense
out water vapour in the gases and thus prevent condensation within the
instrument. The water-trap filter should be used in the immediate envi-
ronment of the instrument so it maintains either the same temperature,
or a lower temperature than the instrument.
Note: that some gases may be absorbed by the water trapped in the fil-
ter. This will reduce the gases’ concentration.
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Safety Considerations
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SAFETY CONSIDERATIONS
The Type 1303 Multipoint Sampler and Doser complies with EN61010-1
(1993) and IEC 1010-1 (1990): Safety requirements for electrical
equipment for measurement, control and laboratory use. To ensure safe
operation and retain the Type 1303 in safe condition, note the following:
APPLYING POWER
Before using the Type 1303, check that it is set to match the available
mains voltage and that the correct fuse is installed.
SAFETY SYMBOLS
The apparatus is marked with this symbol when it is important that
the user refer to the associated warning statements given in the Instruc-
tion Manual.
⊥Chassis terminal Safety earth terminal Hazardous Voltage
WARNINGS
Before connecting or disconnecting interface cables, switch off the power
to all instruments.
If the correct function or operating safety of the Type 1303 is impaired,
secure the instrument against further use until the fault is repaired.
Any adjustment, maintenance or repair of the internal parts of the Type
1303 under power must be avoided as far as possible; if unavoidable, it
must only be done by qualified service personnel.
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Chapter 1
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Chapter 1
Description and Functions
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Chapter 1
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1.1 Description and Functions
Fig.1.1 The pneumatic system of the 1303
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Chapter 1
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1.1.1 The Sampler System
The pneumatic system of the 1303 is shown schematically in Fig. 1.1.
The sampler system is constructed of 316 stainless steel and PTFE
(polytetrafluoroetyhlene) tubing to minimize adsorption of samples. The
system has 6 inlet channels, each with a solenoid valve. Each inlet
channel has a tube-mounting stub on the front-plate of the 1303; 6
tubes of up to 50m length connect each channel to the respective sam-
pling point. The 6 inlet channels converge into one; a three-way valve
can then direct the gas sample to the Gas Monitor for analysis, or
through the pump to the waste-air outlet on the 1303’s back-plate. A
pressure transducer checks the efficiency of the sampling pump and al-
lows checks for blocked airways.
An air-filter is attached to the end of each sampling tube to keep the
samples free of particles.
1.1.2 The Doser System
The doser system has 6 outlet channels, see Fig. 1.1, each with a sole-
noid valve. Each channel has a nozzle which reduces the internal di-
ameter of the channel. The nozzles ensure that the rate of flow of
tracer-gas to the dosing points is dependent only upon the tracer-gas
supply pressure and temperature, and is unaffected by the pressure in
the dosing tubes or at the dosing point itself. Three different nozzle
sizes are used: four medium, one large and one small. Each size gives a
different volume flow rate so that the amount of tracer-gas delivered to
a particular dosing point can be matched to the requirement at that
point by using the outlet channel which has the appropriate nozzle.
Each of the 6 dosing outlet channels has a tube-mounting stub on the
frontplate of the 1303. 6 tubes of up to 50m length connect each stub
to the respective dosing point.
2 separate inlet channels mounted on the backplate of the 1303 serve
the dosing channels: the tracer-gas inlet, and the carrier-air inlet.
The doser-gas inlet channel is pressurized by the tracer-gas supply cyl-
inder, which is connected to the inlet on the 1303’s backplate by tub-
ing. A pressure and a temperature transducer give information on the
tracer-gas supply; a fine filter ensures that the dosing channels are
particle-free. The main valve on the tracer-gas inlet channel is used to
enclose a volume of tracer-gas between itself and the dosing valves.
This volume is used when calibrating the doser system.
The carrier-air inlet pumps extra air to the dosing outlets to speed de-
livery of the tracer-gas to the dosing point. This inlet has a coarse air-
filter, a pump, and a pressure transducer for checking the efficiency of
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Chapter 1
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the pump. Delivering a dose of tracer-gas to a dosing point 50m distant
takes 1 minute.
The dosing system can deliver a continuous dose, that is, an uninter-
rupted flow of tracer-gas over a period of time; or a discontinuous
dose, in which the amount of tracer-gas delivered is reduced by inter-
rupting the flow at regular intervals during the dosing period.
The doser system is set up for use by specifying a dosing time-out such
that the 1303 will stop any current dosing procedure after a given time
has elapsed without instruction from the controlling computer. This
value is specified form the controlling computer.
1.1.3 Front Panel
Fig.1.2 The front panel of the 1303
Doser: 6 mounting stubs for connection of tubing (AF0005, red)
to dosing points. Each stub is numbered, and has a cor-
respondingly-numbered lamp. When the lamp is lit, it
indicates that the corresponding dosing valve is open,
see section 3.6.3. When the Main Valve Open lamp is
lit, it indicates that the main dosing valve is open, see
section 3.6.2.
Sampler: 6 mounting stubs for connection of tubing (AF0006,
green) to sampling points. Each stub is numbered, and
has a correspondingly-numbered lamp. When the lamp
is lit, it indicates that the corresponding sampling valve
is open, see section 3.5. The 3 Way Valve to Ana-
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Chapter 1
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lyzer/Waste Air lamps indicate which way the internal
3 way valve is set, see section 3.5.
Temperature Sensors Input: 6 inputs suitable for use with the INNOVA Air
Temperature Transducer Type MM0034 or Operative
Temperature Transducer MM0060.
Interface: 3 lamps which indicate the function of the IEEE inter-
face. If the Listen lamp is lit, the 1303 is receiving in-
structions or data from the system controller. If the Talk
lamp is lit, the 1303 is outputting data. If the SRQ lamp
is lit, the 1303 has generated a Service Request, see
section 4.1.1 and 4.2.6. Full details of the IEEE Interface
are given in Chapter 4.
1.1.4 Rear Panel
Fig.1.3 The rear panel of the 1303
AC Mains: A 3-pin connector accepting Power Cable for connection
to a single phase AC mains supply.
Mains Voltage: Two-position switch for adjustment according to the lo-
cal mains supply. Before connecting the 1303 to a mains
supply, the mains voltage setting and fuse ratings must
be checked in accordance with the instructions given in
section 2.1.
Dosing Gas Inlet: Mounting stub for connection of a tracer-gas supply to
the 1303 using tubing AF0008. See section 2.3.3.
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Outlet to Analyzer: Mounting stub for connecting the sampler system of the
1303 to the inlet of an INNOVA Gas Monitor via tubing.
See section 2.3.4. Usable models are Type 1302, 1312
or 1412. In the following referred to as “Gas Monitor”.
Waste Air Outlet: Mounting stub for tubing to exhaust air from the 1303’s
sampler system. See section 2.3.5.
Interface IEEE-488: Digital interface designed in accordance with IEEE 488-
1978. The IEEE interface is identical in use to that de-
scribed in IEC 625-1; full compatibility is only a matter
of using the correct cables and connectors. For more de-
tail about the IEEE/IEC interface, refer to Chapter 4.
Device Address: Bank of 8 switches which decide the 1303’s interface
address. See section 2.2.1 for details of how to set the
interface address.
Air Inlet: The dosing pump inside the 1303 supply all dosing chan-
nels with carrier air for the tracer-gas, when the dosing
pump is running.
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Chapter 2
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Chapter 2
Preparing to Use the 1303
August 2008
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Chapter 2
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2.1 Preliminary
2.1.1 Environment and Handling
The Type 1303 Multipoint Sampler and Doser is designed for use in en-
vironments with temperatures between +5°C and +40°C (+41°F and
+104°F) and with up to 90% relative humidity (non-condensing) at
40°C. Other than ensuring correct connection of the mains supply, no
special handling precautions are necessary.
2.1.2 Connecting the Mains Supply
The 1303 is operated from a 50 to 400 Hz single phase AC mains sup-
ply. Before connecting the mains supply, the following checks and ad-
justments should be performed to ensure safe operation of the 1303.
Mains Voltage Setting
Ensure that the Mains Voltage switch on the rear panel is set to the
local supply voltage.
To change the Mains Voltage setting, use a small flat-bladed screw-
driver to turn the switch to the voltage you require. Now check that
correctly rated fuses are fitted to the 1303.
Checking Fuse Rating
Use a small flat-bladed screwdriver to prise open the flap surrounding
the AC Mains switch. See Fig. 2.1.
Fig.2.1. Accessing the 1303’s fuses
Again using the screwdriver, gently lever the fuse-holders out from
their slots. See Fig. 2.2.
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Fig.2.2. Inserting the fuses into the 1303’s fuse holder
For use from a 100-127V supply, use two 1,25A slow-blow fuses (Lu-
maSense No. VF0027); for use from a 200-240V supply, use two
630mA slow-blow fuses (LumaSense No. VF0032). Both types of fuse
are supplied with the instrument.
When replacing the fuse-holders, ensure that the direction of the white
arrows on each holder matches the arrows marked on the covering flap.
Supply Connection
Once the mains voltage setting and fuses have been checked, connect
the Mains Input connector to the mains supply using Power Cable
(supplied with the 1303).
2.2 System Use
The 1303 combines with the Gas Monitor and a controlling computer to
provide a system which offers wide-ranging monitoring capabilities. The
1303 makes it possible to perform multi-point air-exchange analyses
and multi-point monitoring tasks in many different situations and envi-
ronments, without changing the system components.
An example air-exchange analysis system is shown in Fig. 2.3. In such
a system, the doser/sampler systems of the 1303 are used as follows.
The doser system marks the supply-air of the room with a known
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Chapter 2
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amount of tracer-gas. The sampler system then takes a sample of the
return-air from the room, and delivers the sample to the Gas Monitor
for analysis. While the Gas Monitor performs one analysis, the 1303
takes the next sample for analysis from the room. As the amount of
tracer-gas delivered to the room is known, and the remaining concen-
tration of tracer-gas in the samples is determined by the Gas Monitor,
the ventilation-system performance can be calculated.
Fig.2.3. A typical air-change analysis system, shown with an applica-
tion example. In this case, the aim of the analysis is to deter-
mine the size of the air-change in the mechanically ventilated
room. The diagram shows only one dosing and sampling point,
for clarity. Up to 6 similar analyses can be performed simulta-
neously using one 1303. 7620 Application Software gives con-
trol of all the functions of the system.
2.2.1 Connecting the 1303 to the System Controller
The 1303 is connected to the computer by the IEEE interface bus, over
which the 1303 receives the commands and data which control it. Fur-
ther information about the cables available from LumaSense to connect
the 1303 onto the IEEE interface bus, and about the IEEE interface of
the 1303, are given in section 4.1.
2.2.2 Setting the Interface Address of the 1303
The 1303 uses a single interface address. The address is set using the
bank of eight switches on the rear panel of the 1303. The last five
switches on the bank decide the interface address. These switches are
marked A1 (the least significant bit) to A5 (the most significant bit).
The switches represent binary values, as follows:
If the switch is down, it represents a binary “0”. See Fig. 2.4.
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Chapter 2
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Fig. 2.4. Dipswitch settings binary “0”
If the switch is up, it represents a binary “1”. See Fig. 2.5.
Fig. 2.5 Dipswitch settings binary “1”
The interface address of the 1303 is set at the factory to 01111 (deci-
mal value 15), see Fig. 2.6. If this is not suitable for your system, use
the switches to set an address appropriate to your system.
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Chapter 2
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Fig. 2.6. Interface address 15
If the system comprise two 1303 instruments the standard interface
address of the second 1303 should be 16, see Fig. 2.7.
Fig. 2.7. Interface address 16
2.3 Connecting Tubing to the 1303
The 1303 is connected via tubing to:
the sampling points;
the dosing points (if dosing is required);
to a suitable tracer-gas supply;
to the Gas Monitor being used to analyze the gases that are sampled;
to a suitable exhaust for gases purged from the sampler system.
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Chapter 2
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Note: the performance of the 1303’s sampling and dosing systems are
specified for sampling and dosing tubing of maximum 50m in length.
Tubing for use with the 1303 is available from LumaSense, as follows:
Sampler tubes, green nylon, LumaSense accessory number AF0006 or
polytetrafluoroethylene (PTFE), LumaSense accessory number AF0614.
Doser tubes, red nylon, LumaSense accessory number AF0005 red tub-
ing for dosing.
Tracer-gas supply tubing, nylon, LumaSense accessory number
AF0008.
Using these tubing materials minimizes the risk of gases being ad-
sorbed onto the tube’s surface, which would result in inaccurate meas-
urements.
2.3.1 Connecting Sampling and Dosing Tubing
Before connecting sampling and dosing tubing to the 1303, you should
know approximately where the sampling and dosing points will be in
the area to be monitored. This will allow you to estimate the length of
tubing you need to connect to the mounting-stubs of the 1303.
To connect sampling tubing, see Fig.2.8.
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Fig.2.8. Attaching sampling and dosing tubing to the 1303’s mounting
stubs
1. Remove the knurled nut from the mounting stub of the sampler
channel you wish to use, on the front panel of the 1303.
2. Push one end of the length of the nylon AF0006 or polytetrafluoro-
ethylene PFTE AF0614 tubing through the non-threaded end of the
nut.
3. Push the end of the tubing onto the mounting stub as far as it will
go, and secure the tube by re-tightening the knurled nut onto the
threads of the mounting stub.
To connect dosing tubing:
Proceed as described above, using the nylon tubing AF0005.
2.3.2 Connecting External Filters to the Sampling Tubes
The external filters, comprising filter, LumaSense accessory number
DS2306, and fitting, LumaSense accessory number UD5041 (optional
accessories), protect the 1303’s sampling airways from airborne parti-
cles such as dust, thus helping to prevent blockage of the airways.
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