Intec Controls MSR PolyGard AT-1195 V3 Manuel utilisateur

Customer Services (858) 578-7887 & (888) GO INTEC

INTEC Controls, 12700 Stowe Dr., Suite 110, Poway, CA 92064

Fax (858) 578-4633 & (888) FX INTEC

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Specication subject to change without notice.

Printed in USA 150109

January 09, 2015 – Revision

Polygard® is a registered trademark of MSR AT-1195_V3_UserManual

PolyGard AT-1195 V3

Electrochemical Oxygen Transmitter

Serial No. AT03-003

User’s Manual

January 20, 2009

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PolyGard®is a registered trademark of MSR-Electronic GmbH | AT-1195_V3_UserManual

January 04, 2016 – Revision

INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com

February 11, 2020 – Revision

Customer Services (858) 578-7887 & (888) GO INTEC

INTEC Controls, 12700 Stowe Dr., Suite 110, Poway, CA 92064

Fax (858) 578-4633 & (888) FX INTEC

www.inteccontrols.com

Specication subject to change without notice.

Printed in USA 150109

Polygard® is a registered trademark of MSR AT-1195_V3_UserManual

PolyGard®O2Transmitter

User Manual - AT-1195 V3 Page 02

1 General Overview .....................................................................................................................3

2 Functional Description ..........................................................................................................3

2.1 Control Mode.............................................................................................................................. 3

2.2 Sensor........................................................................................................................................ 3

3 Installation .................................................................................................................................... 4

3.1 Mounting Instructions ................................................................................................................. 4

3.2 Installation .................................................................................................................................. 4

4 Electrical Connection............................................................................................................. 4

4.1 Wiring Connection...................................................................................................................... 5

5 Commissioning.......................................................................................................................... 5

5.1 Calibration .................................................................................................................................. 5

5.2 Manual Zero Point...................................................................................................................... 6

5.3 Gain............................................................................................................................................ 6

Calculation of Control Voltage ............................................................................................................ 6

5.4 Option Relay Output................................................................................................................... 7

6 Inspection and Service..........................................................................................................7

6.1 Inspections ................................................................................................................................. 7

6.2 Calibration .................................................................................................................................. 7

6.3 Exchange of Sensor Element.....................................................................................................7

7 Troubleshooting........................................................................................................................ 8

7.1 Analog Mode .............................................................................................................................. 8

8 Cross-sensitivity Data............................................................................................................8

9 Technical Data............................................................................................................................9

10 Figures ....................................................................................................................................... 11

11 Notes and General Information.................................................................................... 13

11.1 Intended Product Application................................................................................................ 13

11.2 Installers’ Responsibilities .................................................................................................... 13

11.3 Maintenance ......................................................................................................................... 13

11.4 Limited Warranty .................................................................................................................. 13

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com

Speciﬁcations subject to change without notice. | USA 200211 | Page 2of 13

AT-1195 V3 – UserManual

Customer Services (858) 578-7887 & (888) GO INTEC

INTEC Controls, 12700 Stowe Dr., Suite 110, Poway, CA 92064

Fax (858) 578-4633 & (888) FX INTEC

www.inteccontrols.com

Specication subject to change without notice.

Printed in USA 150109

Polygard® is a registered trademark of MSR AT-1195_V3_UserManual

PolyGard®O2Transmitter

User Manual - AT-1195 V3 Page 03

Electrochemical Oxygen Transmitter

1 General Overview

The PolyGard O2 gas transmitter AT-1195 with digital processing of the measuring values and temperature

compensation is used for the continuous monitoring of the ambient air to detect the presence of oxygen

concentrations. Main application ranges are laboratories, food production etc. where changes of the oxygen

concentrations might be possible.

The AT-1195 V3 transmitter is equipped with an analog output where the signal can be selected as current signal 4-

20 mA or as voltage signal 2-10 V. In the 4-20 mA mode the transmitter also works in the 2-wire technique.

The intended sites are all areas being directly connected to the public low voltage supply, e.g. residential,

commercial and industrial ranges as well as small enterprises.

The PolyGard® O2 analog transmitter must not be used in potentially explosive atmospheres.

2 Functional Description

2.1 Control Mode

Analog mode:

The analog output can be selected as current signal with 4-20 mA or as voltage signal 2-10 V. In the 4-20 mA mode

and without any supplementary options, the AT-1195 V3 also works in the 2-wire technique.

2.2 Sensor

The chemical process of the measurement is based on the principle of a galvanic micro-fuel cell. The gas or the

ambient air to be monitored diffuses through a membrane filter into the measuring cell towards the cathode.

Cathode and anode are electrically contacted, therefore due to the oxidation there is an electric current proportional

to the oxygen partial pressure. This current signal is linear to the oxygen concentration. The current is evaluated by

the connected amplifier and transformed into a linear output signal.

The diffusion through the membrane and the thin electrolytic coat are complex, temperature dependant,

electrochemical processes influencing the ion current of the sensor. Therefore the sensor is temperature-

compensated within the specified temperature range.

The electrolyte, the catholyte and the composition of the anode are in a way that the oxygen diffusing towards the

cathode is electrochemically reduced.

The electrolyte is used up by the electrochemical process. So the sensor life time is limited to two years. Calibration

during sensor life time is not necessary.

Caution: There is a small quantity of corrosive liquid in the sensor element. If in case of damage persons or

objects touch the liquid, you have to clean the affected areas as fast and carefully as possible with tap water.

Out of use sensors must be disposed in the same way as batteries.

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com

Speciﬁcations subject to change without notice. | USA 200211 | Page 3of 13

AT-1195 V3 – UserManual

Customer Services (858) 578-7887 & (888) GO INTEC

INTEC Controls, 12700 Stowe Dr., Suite 110, Poway, CA 92064

Fax (858) 578-4633 & (888) FX INTEC

www.inteccontrols.com

Specication subject to change without notice.

Printed in USA 150109

Polygard® is a registered trademark of MSR AT-1195_V3_UserManual

PolyGard®O2Transmitter

User Manual - AT-1195 V3 Page 04

3 Installation

Note:

Avoid any force (e.g. by thumb) on the sensor element during operation or installation. Electronics can be destroyed

by static electricity. Therefore, do not touch the equipment without a wrist strap connected to ground or without

standing on a conductive floor.

3.1 Mounting Instructions

When choosing the mounting site please pay attention to the following:

• The specific weight of oxygen O2 is higher than that of air (factor 1,10).

Recommended mounting height is 1.5 m (5 feet) to 1.8 m (6 feet) above floor.

• Choose mounting location of the sensor according to the local regulations.

• Consider the ventilation conditions! Do not mount the transmitter in the centre of the airflow (air passages,

suction holes).

• Mount the transmitter at a location with minimum vibration and minimum variation in temperature (avoid

direct sunlight).

• Avoid locations where water, oil etc. may influence proper operation and where mechanical damage might

be possible.

• Provide adequate space around the sensor for maintenance and calibration work.

Duct mounting

• Mount only in a straight section of duct with minimum air vortex. Keep a minimum distance of 1 m (3,5 feet)

from any curve or obstacle.

• Mount only in a duct system with a maximum air velocity of 10 m/s (2000 ft/min) or less.

• Mounting must be performed so that the probe openings are in line with the airflow.

3.2 Installation

• Open the cover. Unplug basic PCB carefully from the bottom part.

• Fix bottom part by screws vertically to the wall (terminal blocks to the ground).

• Replug the basic PCB at X4 and X5 with care. Replace the cover.

4 Electrical Connection

Consider static electricity! See 3. Mounting

• Installation of the electrical wiring should only be executed by a trained specialist according to the

connection diagram, without any power applied to conductors and according to the corresponding

regulations!

• Avoid any influence of external interference by using shielded cables for the signal line, but do not connect

the shield.

• Recommended cable for analog mode: Belden Twisted Shielded (20 AWG), max. resistance 73 Ω/km (20.8

Ω/1000 ft).

• It is important to ensure that the wire shields or any bare wires do not short the mounted PCB.

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PolyGard®is a registered trademark of MSR-Electronic GmbH | AT-1195_V3_UserManual

INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com

Speciﬁcations subject to change without notice. | USA 200211 | Page 4of 13

AT-1195 V3 – UserManual

Customer Services (858) 578-7887 & (888) GO INTEC

INTEC Controls, 12700 Stowe Dr., Suite 110, Poway, CA 92064

Fax (858) 578-4633 & (888) FX INTEC

www.inteccontrols.com

Specication subject to change without notice.

Printed in USA 150109

Polygard® is a registered trademark of MSR AT-1195_V3_UserManual

PolyGard®O2Transmitter

User Manual - AT-1195 V3 Page 05

4.1 Wiring Connection

•Open the cover. Unplug basic PCB carefully from terminal blocks X4 and X5.

•Insert the cable and connect cable leads to terminal blocks. See fig. 1 and 2.

•Replug the PCB in the terminal blocks X4, X5. Replace the cover.

5 Commissioning

Consider commissioning instructions at any exchange of the sensor elements.

Only trained technicians should perform the following:

•Check mounting location.

•Select output signal form: Current or voltage, and starting point 0 or 20%. See fig. 4.

•Check power voltage.

•Check PCB AT03 for correct mounting at X4 and X5.

•Check the sensor for proper mounting at the connectors X3 of the PCB AT-1195 V3.

•Calibrate the transmitter (if not already factory-calibrated).

Required instruments for commissioning (calibration) of the transmitter:

•Test gas bottle with test gas O2 in the range of 20.8% vol O2 in Nitrogen or Air Balance.

•Gas pressure regulator with flow meter to control the gas flow to 150 ml/min.

•Calibration adapter with tube. Calibration set CONKIT-E/CH-LC. See fig. 5.

•Digital voltmeter with range 0 – 300 mV, accuracy 1%.

•Small screwdriver.

Note:

Prior to calibration the sensor must be connected to the power supply and fully stabilised for at least 1 hour without

interruption.

Please observe proper handling procedures for test gas bottles!

5.1 Calibration

Depending on the version and the control mode there are two different possibilities to calibrate the transmitter:

Manual calibration

Manual calibration is only possible if the transmitter is equipped with the push-button “Zero” and the potentiometer

“Gain” (= version for manual calibration).

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PolyGard®is a registered trademark of MSR-Electronic GmbH | AT-1195_V3_UserManual

INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com

Speciﬁcations subject to change without notice. | USA 200211 | Page 5of 13

AT-1195 V3 – UserManual

Customer Services (858) 578-7887 & (888) GO INTEC

INTEC Controls, 12700 Stowe Dr., Suite 110, Poway, CA 92064

Fax (858) 578-4633 & (888) FX INTEC

www.inteccontrols.com

Specication subject to change without notice.

Printed in USA 150109

Polygard® is a registered trademark of MSR AT-1195_V3_UserManual

PolyGard®O2Transmitter

User Manual - AT-1195 V3 Page 06

5.2 Manual Zero Point

•The zero-point is factory-set; therefore zero calibration is not necessary.

5.3 Gain

•Connect calibration adapter carefully to the sensor element.

•Apply calibration test gas O2 (150 ml/min; 1 Bar (14.5 psi) ± 10%).

•Wait two minutes until the signal is stable, adjust control voltage with potentiometer ”Gain” until the signal

corresponds to the calculated value ± 2 mV, see “Calculation of Control Voltage”.

•Remove calibration adapter with a careful light turn. Check the sensor for correct mounting!

By limiting the gain factor, calibration will not be possible any more when the sensitivity of the sensor

reaches a residual sensitivity of 30 %. Then the sensor has to be replaced.

Calculation of Control Voltage

Signal start 2 V / 4 mA

Control voltage (mV) = 160 (mV) x test gas concentration O 2 (vol. %) + 40 (mV)

measuring range O2 (vol. %)

Signal start 0 V / 0 mA

Control voltage (mV) = 200 (mV) x test gas concentration O 2 (vol. %)

measuring range O2 (vol. %)

Example:

Measuring range 25 vol. %

Test gas concentration 20.8 vol. % O2

Control voltage: Signal start 2 V / 4 mA 173.1 mV

Control voltage: Signal start 0 V / 0 mA 166.4 mV

Signal start 0 V / 0 mA Signal start 2 V / 4 mA

160 (mV) x 20.8 (vol. %) + 40 (mV) = 173.1 mV 200 (mV) x 20.8 (vol. %) = 166.4 mV

25 (vol. %) 25 (vol. %)

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AT-1195 V3 – UserManual

PolyGard®is a registered trademark of MSR-Electronic GmbH | AT-1195_V3_UserManual

INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com

Speciﬁcations subject to change without notice. | USA 200211 | Page 6of 13

AT-1195 V3 – UserManual

Customer Services (858) 578-7887 & (888) GO INTEC

INTEC Controls, 12700 Stowe Dr., Suite 110, Poway, CA 92064

Fax (858) 578-4633 & (888) FX INTEC

www.inteccontrols.com

Specication subject to change without notice.

Printed in USA 150109

Polygard® is a registered trademark of MSR AT-1195_V3_UserManual

PolyGard®O2Transmitter

User Manual - AT-1195 V3 Page 07

5.4 Option Relay Output

The two relays are activated in dependence of the gas concentration. If the gas concentration exceeds the adjusted

alarm threshold, the corresponding relay switches on. If the gas concentration falls below the threshold minus

hysteresis, the relay switches off again.

The contact function for relay 2, NC (normally closed) or NO (normally open), can be selected via the jumper

NO/NC. See fig 1 and 3. Relay 1 is equipped with a change-over contact.

Via the ModBus interface the two alarm thresholds and the hysteresis are freely adjustable at the PC within the

measuring range. The procedure can be read from the user manual “ModBus Software”.

The following parameters are factory-set.

Alarm threshold 1 = Relay 1: 19 (vol. %)

Alarm threshold 2 = Relay 2: 17 (vol. %)

Switching hysteresis: 1 (vol. %)

6 Inspection and Service

6.1 Inspections

Inspection, service and calibration of the transmitters should be done by trained technicians and executed at regular

intervals. We therefore recommend concluding a service contract with INTEC Controls or one of their

authorized partners.

6.2 Calibration

(See section 5.1 and 5.2)

•At commissioning and at periodic intervals determined by the person responsible for the gas detection

system (recommendation every 12 months).

•After exchange of the sensor

•If in case of operational or climatic influences the sensitivity of the sensor falls below 30 % in operation,

calibration will not be possible any more. In this case the sensor has to be changed.

6.3 Exchange of Sensor Element

Consider static electricity! See point 3.

Sensor should always be installed without power applied:

•Unplug basic PCB AT1195 carefully from the bottom part.

•Unplug old sensor element from the PCB.

•Take the new sensor out of the original packing.

•Plug the sensor element in the PCB at X7.

•Replug the PCB AT1195 in the terminal blocks X4, X5 carefully.

•Calibrate according to section 5.

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Speciﬁcations subject to change without notice. | USA 160104 | Page 7of 13

12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | relevantsolutions.com/inteccontrols

AT-1195 V3 – UserManual

PolyGard®is a registered trademark of MSR-Electronic GmbH | AT-1195_V3_UserManual

INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com

Speciﬁcations subject to change without notice. | USA 200211 | Page 7of 13

AT-1195 V3 – UserManual

Customer Services (858) 578-7887 & (888) GO INTEC

INTEC Controls, 12700 Stowe Dr., Suite 110, Poway, CA 92064

Fax (858) 578-4633 & (888) FX INTEC

www.inteccontrols.com

Specication subject to change without notice.

Printed in USA 150109

Polygard® is a registered trademark of MSR AT-1195_V3_UserManual

PolyGard®O2Transmitter

User Manual - AT-1195 V3 Page 08

7 Troubleshooting

7.1 Analog Mode

Trouble Cause Solution

Jumper 0-20 % not set Check jumper position

Power voltage not applied

Measure tension at X4:

Two-wire: Pin 1 (+) and 4 (-)

Three-wire: Pin 1 (+) and 2 (-)

PCB AT03 not plugged in correctly at

X4 and X5 Replug PCB correctly

Output signal < 3 mA / 1,5 V and/or

control voltage < 30 mV

only for starting signal 2V/4 mA

Wire break Check the wiring

Output signal > 22 mA /220 mV Short-circuit Check the wiring

Sensor element not calibrated Calibrate sensor element

Control voltage does not reach the

calculated value Sensor sensitivity < 30 % Replace sensor element

Power voltage not applied Measure tension at X4

No reaction of the output signal in

spite of gas concentration Signal (Pin 4) not wired correctly Check the wiring

8 Cross-sensitivity Data

The cross sensitivity can be read from the table Technical Data. The table doesn’t claim to be complete. Other

gases can have an influence on the sensitivity, too. The indicated sensitivity data are only standard values referring

to new sensor elements.

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com

Speciﬁcations subject to change without notice. | USA 200211 | Page 8of 13

AT-1195 V3 – UserManual

Customer Services (858) 578-7887 & (888) GO INTEC

INTEC Controls, 12700 Stowe Dr., Suite 110, Poway, CA 92064

Fax (858) 578-4633 & (888) FX INTEC

www.inteccontrols.com

Specication subject to change without notice.

Printed in USA 150109

Polygard® is a registered trademark of MSR AT-1195_V3_UserManual

PolyGard®O2Transmitter

User Manual - AT-1195 V3 Page 09

9 Technical Data

General sensor performances

Gas type Oxygen (O2)

Sensor element Electrochemical, diffusion

Measuring range 0 – 25 vol. %

Temperature range -4°F to 122°F (-20°C to 50°C)

Pressure range Atmosphere ± 15 %

Humidity 0 – 99 % RH non condensing

Storage temperature range 23°F to 86°F (-5°C to 30°C)

Storage time Max. 6 months

Mounting height 1.5 to 1.8 m (5 to 6 ft.)

Accuracy ± 0.1 vol. %

Long-term output drift < 5% signal loss/year

Response time t90 < 15 sec.

Life expectancy 2 years/normal operating environment

Cross sensitivity1 Concentration (ppm) Reaction (vol. %O2)

Carbon dioxide, CO2 5 vol. % 2

Electrical

Power supply 18 - 28 VDC/AC, reverse polarity protected

(

2-wir

ode

Power consumption (without options)

- Analog mode

- Bus mode

22 mA, max. (0.6 VA)

12 mA, max. (0.3 VA)

Output signal

Analog output signal

Selectable: Current / tension

Startin

oint 0 / 20 %

(0) 4 – 20 mA, load ≤ 500 Ω,

(0) 2 - 10 V; load ≥ 50 k Ω

proportional, overload and short

circuit proof

Physical

Enclosure2 Stainless steel V2A

Enclosure colour2 Natural, brushed

Dimensions2 (H x W x D) 113 x 135 x 45 mm /(5.35 x 4.5 x 1.8 in.)

Weight2 Approx. 0,5 kg (1.1 Ibs.)

Protection class2 IP 55

Mounting2 Wall mounting, pillar mounting

Cable entry Standard 1 x M 20

Wire connection Screw-type terminal min. 0.25 to. 2.5 mm2

24 to 14 AWG

Wire distance (analog mode) Current signal ca. 500 m (1500 ft.)

Voltage signal ca. 200 m (600 ft.)

1 The table doesn’t claim to be complete. Other gases, too, can have an influence on the sensitivity. The mentioned

cross sensitivity data are only reference values valid for new sensors.

2 Indications only for option "stainless steel", for further types see datasheet “AT-DT Enclosure”.

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INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com

Speciﬁcations subject to change without notice. | USA 200211 | Page 9of 13

AT-1195 V3 – UserManual

Customer Services (858) 578-7887 & (888) GO INTEC

INTEC Controls, 12700 Stowe Dr., Suite 110, Poway, CA 92064

Fax (858) 578-4633 & (888) FX INTEC

www.inteccontrols.com

Specication subject to change without notice.

Printed in USA 150109

Polygard® is a registered trademark of MSR AT-1195_V3_UserManual

PolyGard®O2Transmitter

User Manual - AT-1195 V3 Page 10

Guidelines EMC Directive 2004 / 108 / EWG

Options

Relay output

Alarm relay 1 (switching threshold 5 ppm) 30 VAC/DC 0,5 A, potential-free, SPDT

Alarm relay 2 (switching threshold 8 ppm) 30 VAC/DC 0,5 A, potential-free SPNO/SPNC

Power consumption 30 mA, (max. 0,8 VA)

Warning buzzer

Acoustic pressure 85 dB (distance 300 mm) (1 ft.)

Frequency 3,5 kHz

Power consumption 30 mA, (max. 0,8 VA)

Heating

Temperature controlled 0 °C ±3°C (32 °F ± 5 °F)

Ambient temperature - 40 °C

Power supply 18 - 28 VDC/AC

Power consumption 0.2 A ; 5 VA

Analog input

Only for RS-485 mode 4 – 20 mA overload and short-circuit proof, input

Ω

Power supply for external transmitter 24 VDC max. 50 mA

resistance 200

Speciﬁcations subject to change without notice. | USA 150109 | Page 10 of 13

12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | relevantsolutions.com/inteccontrols

AT-1195_V3 – UserManual

Polygard® is a registered trademark of MSR | AT-1195_V3_UserManual

Speciﬁcations subject to change without notice. | USA 160104 | Page 10 of 13

12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | relevantsolutions.com/inteccontrols

AT-1195 V3 – UserManual

PolyGard®is a registered trademark of MSR-Electronic GmbH | AT-1195_V3_UserManual

INTEC Controls | 12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.INTEC | inteccontrols.com

Speciﬁcations subject to change without notice. | USA 200211 | Page 10 of 13

AT-1195 V3 – UserManual

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