Ametek mocon Dansensor ISM-3 User manual

P/N 200114-I
09/2021
User Manual
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Dansensor®ISM-3 EN User Manual
P/N 200114-I
09/2021
User Manual
Published by: MOCON Europe A/S
Rønnedevej 18
4100 Ringsted, Denmark
Tel [phone]
[e-mail]
www.ametekmocon.com
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2 User Manual EN Dansensor®ISM-3
P/N 200114-I
09/2021

Dansensor®ISM-3 EN User Manual 3
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09/2021
Table of Contents
1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2. Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3. Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
General use of buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Start and stop of measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
External/manual start and stop of measuring . . . . . . . . . . . . . . . . . . 12
Set-up of alarm limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Indication of sensor flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Flow alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Current output/voltage output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Sub menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Setting up of options, relay and external measurement control .16
5. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6. Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Offset adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7. Error indication/error correction . . . . . . . . . . . . . . . . . . . . . . . .21
8. Spare parts and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Standard accessories (included) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Accessories (extra) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Flow system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Operation and connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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Dansensor®ISM-3 EN User Manual 5
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1. Introduction
Dansensor® ISM-3 is an oxygen analyser which measures the concentration of oxygen (O2) in
a gas mixture.
The measured O2concentration is shown in a large, easy readable display.
ISM-3 can via a simple menu structure be programmed to give alarm in case of a too high or
too low O2concentration. Besides that an alarm is given in case of insufficient flow of
measuring gas, or in case of other faults in the ISM-3.
ISM-3 is equipped with a relay for alarm in case of too high/low O2concentration, insufficient
measuring gas flow or other vital faults.40
ISM-3 is specially developed for being incorporated/mounted on nitrogen generators etc.
where the control of the O2concentration is a vital part of the process.
Fig. 1. ISM-3 Analyser for incorporation
Fig. 2. ISM-3 Analyser designed for retrofitting

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The following makes ISM-3 a unique O2analyser:
Precise and quick measuring
Covers all measuring ranges from 100% to 0ppm with automatic range shift
Optional external control of measuring
Long term stable sensor - long intervals without calibration
Automatic control of measuring gas flow
Programmable current oulet/voltage outlet (extra accessories) 0/4-20mA/0/2-10 Volt with
galvanic separation
2 alarm limits programmable for O2content
Calibration with up to 4 calibration gases plus atmospheric air (20.946% O2)
Supplied as stand-alone or for incorporation.
ISM-3 is specifically built for measuring on clean dry gases and gas mixtures where a great
measuring precision, reliability and long term stability and alarm control of flow and content
of oxygen are required.
As examples of application the following areas can be mentioned:
Control of gas
Atmospheric control under industrial or laboratory conditions
Control of gas mixtures
Environmental measurements
Measuring of oxygen within the chemical, metallurgical and medical industry and
research

Dansensor®ISM-3 EN User Manual 7
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2. Safety precautions
Read and understand this manual for your own safety’s sake and for the quality of the work
carried out using this equipment.
The following terms are used:
"DANGER" to designate a condition which MAY involve mortal danger of serious
injury
"CAUTION" to designate a condition which MAY involve serious injury
"NOTE" to designate a condition which MAY involve faulty operation of the
equipment thus causing fault measuring results
Follow the below instructions carefully:
DANGER: Opening ISM-3 may involve mortal danger or serious injury as live
high-voltage leads may be exposed. By opening the ISM-3, the
mains supply must always be switched off. By connecting the net
ground must always be connected.
CAUTION: If ISM-3 is moved or transported, make sure it is note exposed to
shocks or impact.
Only use water or a mild soap lather to clean the front panel.
Always make sure that there is at least 5 cm of free air behind the
ventilation holes on the back of ISM-3.
Our warranty does not cover unless the above instruction is strictly
adhered to.
NOTE: Always install a hose on the "GAS OUT" connection and make sure
that the measuring gas is transported away from the ISM-3, as the
surrounding atmospheric air is used as reference. In order to observe
the CE`s EMC regulation all connections to the ISM-3 (not mains
connections) must be protected. The screen must end in a PG sleeve
on the back of ISM-3.
Recommendations
In order to prolong the life of the analyser it is recommended to let ISM-3 be constantly
connected to the mains voltage.
Every 6 months it is recommended to control ISM-3`s calibrations by measuring on gases
with known content of O2.
Recommended control - and calibration interval is 12 months.

8 User Manual EN Dansensor®ISM-3
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09/2021