FTC200 OEM - MessKonzept

FTC200-OEM

Fast Thermal Conductivity Analyzer

Operating Manual

Adresse:

MessKonzept GmbH

Niedwiesenstrasse 33

60431 Frankfurt a. M.

Germany

Kontakt:

Tel.: +49 69 530564 44

Fax: +49 69 530564 45 [email protected] www.messkonzept.de

Version 1.04 © MessKonzept GmbH

Bank: Frankfurter Volksbank

Kto.-Nr. 7000903005

BLZ 501 900 00

Swift Code: FFVB DE FF

IBAN DE 03501900007000903005

Geschäftsführer:

Dr. Axel-Ulrich Grunewald

Eingetragen am AG Frankfurt a.M.

HRB 49940

Umsatzsteuer ID: DE 211207233

Content

1. Description .................................................................................................. 3

2. Measuring gases and ranges ....................................................................... 4

3. Purchased parts package ............................................................................ 4

4. Electrical Connection .................................................................................. 5

5. Pneumatic Connection ................................................................................ 6

6. Mounting .................................................................................................... 6

7. Anaolog Output .......................................................................................... 7

8. FTC200 – Serial communication ................................................................. 8

9. Calibration ................................................................................................ 10

10. Specifications ............................................................................................ 10

Adresse:

MessKonzept GmbH



Germany

Kontakt:

Tel.: +49 69 530564 44



Kto.-Nr. 7000903005

BLZ 501 900 00


IBAN DE 03501900007000903005

Geschäftsführer:



HRB 49940


1.

Description

The FTC200-OEM is a highly precise and stable Thermal Conductivity Detector (TCD). It is designed for the use as an OEM detector. Since it is not equipped with housing it has protection class 00 and no electro-magnetic shielding. It is not designed for the use in hazardous areas. As it is true for any OEM product, all this is in the hands of our customers.

For indication of the signal a 0 to 10V analog output is provided. For internal calibration, configuration and digital indication of the signal a TTL-level RS232 communication is required. For testing purposes we offer a RS232 to TTL level converter as well as two small windows programs for a PC in order for perform Offset and Gain calibration.

The thermal conductivity of a gas mixture depends on the individual gas components and on the composition of the mixture. Under certain conditions, therefore, the concentration of individual gas components can be determined by measuring the thermal conductivity. In other cases the identification of certain properties of gases is of special interest e.g. for quality control or safety reasons. Often these properties are related to the thermal conductivity and thereby identified. The

-

-

- concentration can be determined with high precision if one of the following conditions is met:

- The gas mixture consists of only two components, for example measuring CO2 in N2 or

H2 inN2.

The gas mixture consists of more than two components but only concentrations of two components vary.

The thermal conductivity of two of three constituents is similar, e.g. measuring H2 or He or CO2 in a mixture of O2 and N2.

In case, a cross sensitive gas may be measured separately and the signal of this measurement is fed into FTC200 where an internal routine compensates the cross sensitivity.

Adresse:

MessKonzept GmbH



Germany

Kontakt:

Tel.: +49 69 530564 44



Kto.-Nr. 7000903005

BLZ 501 900 00


IBAN DE 03501900007000903005

Geschäftsführer:



HRB 49940


2.

Measuring gases and ranges

Measuring

Gas

H

2

H

2

H

2

H

2

H

2

He

He

Carrier Gas

N

2

or air

Ar

He

CH

4

CO

2

N

2

or air

Ar

Basic range

0% - 100%

0% - 100%

20% - 100%

0% - 100%

0% - 100%

0% - 100%

0% - 100%

Smallest range

0% - 0.5%

0% - 0.4%

20% - 40%

0% - 0.5%

0% - 0.5%

0% - 0.8%

0% - 0.5%

CO

2

CO

2

Ar

Ar

CH

4

N

2

or air

Ar

N

2

or air

CO

2

N

2

or air

0% - 100%

0% - 60%

0% - 100%

40% - 100%

0% - 100%

CH

4

O

2

O

2

N

2

N

2

Ar

N

2

Ar

Ar

CO

2

0% - 100%

0% - 100%

0% - 100%

0% - 100%

0% - 100%

NH

3

NH

3

CO

SF

6

N

2

H

N

H

2

2

2

or air

0% - 100%

0% - 100%

0% - 100%

0% - 100%

Other gases and ranges on request.

3.

Purchased parts package

• FTC200-OEM TC-Detector

• 12 pole JST-Connector with 1m open end wires



• optional: RS232-TTL-converter and PC tools for calibration

0% - 3%

0% - 10%

0% - 3%

-

0% - 2%

0% - 1.5%

0% - 15%

0% - 2%

0% - 3%

0% - 4%

0% - 5%

0% - 10%

0% - 2%

0% - 2%

Smallest suppressed zero range

98% - 100%

99% - 100%

85% - 100%

98% - 100%

98% - 100%

97% - 100%

98% - 100%

96% - 100%

-

96% - 100%

80% - 100%

96% - 100%

97% - 100%

85% - 100%

97% - 100%

97% - 100%

96% - 100%

95% - 100%

60% - 100%

99% - 100%

96% - 100%

Adresse:

MessKonzept GmbH



Germany

Kontakt:

Tel.: +49 69 530564 44



Kto.-Nr. 7000903005

BLZ 501 900 00


IBAN DE 03501900007000903005

Geschäftsführer:



HRB 49940


4.

Electrical Connect ion

Basic connection diagram FTC200-OEM

RS232-COM-Port

9P-SUBD-M

Pin 1 -

Pin 2 - TxD

Pin 3 - RxD

Pin 4 -

Pin 5 - GND

Pin 6 -

Pin 7 -

Pin 8 -

Pin 9 -

TTL-RS232-Converter

TxD

RxD

GND

+5V

GND white brown

X6

2

1

4

3

6

5

8 - RxD-TTL

7 - TxD-TTL

FTC200

Fuse 1A slow

Ext. Power Source

+24V, 1A

-GND

X5

1 - GND

2 - Power +24V

3 - Heater +24V

4 - Heater GND

5 - GND

6 - DOWN

7

8 - R3-TTL

9 - R2-TTL

10 - R1-TTL

11 - DIN-TTL

12 - +5V

X7

1 - AIn 1

2 - GND

3 - AIn 2

4 - GND

5 - AOut 1

6 - GND

7 - AOut 2 yellow blue blue brown white grey yellow blue

AnalogOut 1

+ 0-10 Volts

GND

Gas out Gas in

Connector X5:

Pin 01 – GND=Ground

Pin 02 – Power +24VDC = Power supply electronic, +24Volts

Pin 03 – Heater +24VDC = Power supply heater, +24Volts

Pin 04 – Heater GND

Pin 05 – GND

Pin 12 – +5VDC=+5Volts from internal voltage regulator

Connector X6:

Pin 07 – TxD-TTL = Serial TxD, TTL-level

Pin 08 – RxD-TTL = Serial RxD, TTL-level

Connector X7:

Pin 01 – AIn1 = Analog input, 0-10Volts, 50kOhm

Pin 02 – GND

Pin 03 – AIn2 = Analog input, 0-10Volts, 50kOhm

Pin 04 – GND

Pin 05 – AOut1 = Analog output, 0-10Volts, R

L

>1kOhm

Pin 06 – GND

Pin 07 – AOut2 = Analog output, 0-10Volts, R

L

>1kOhm

Adresse:

MessKonzept GmbH



Germany

Kontakt:

Tel.: +49 69 530564 44



Kto.-Nr. 7000903005

BLZ 501 900 00


IBAN DE 03501900007000903005

Geschäftsführer:



HRB 49940


5.

6.

Pneumatic Connection

Looking at the FTC220-OEM on the side of gas tubes with the boards up, the gas inlet is on the right hand side. Gas inlet and outlet tubes – as well as the body - are stainless steel (LF316ti). The outer diameters of the tubes are 6mm. The gas must not contain dust, condensate and potentially condensing matter. The inner gas duct is heated up to 60°C (hotter versions on demand) depending on mounting, thermal insulation and sample flow and temperature, condensation may occur from the actual ambient temperature up to 60°C. With proper heated lines and connections a dew point up to 55°C is permissible.

!!! Important Notice !!!

Condensate will destroy the sensing element immediately (condensate tolerant version on request).

Optimal flow is in between 60l/h and 100l/h. If the flow is kept stable during measurement as well as during calibration a range from 10l/h to 150l/h is possible.

Mounting

The bottom view of the FTC200-OEM shows four M3 thread holes which may be used for the fixation of the detector. Use insulating spacers (min. 4mm) and stainless steel screws in order to minimize heat flow from the 60°C hot detector body. For water-tight bulkhead mounting two spacer and two M8 nuts are available on request.

Adresse:

MessKonzept GmbH



Germany

After mounting check the power consumption at lowest expectable ambient temperature in steady state (after approx.1h). Power consumption may not exceed 500mA. In case it is more improve the insulation.

Kontakt:

Tel.: +49 69 530564 44



Kto.-Nr. 7000903005

BLZ 501 900 00


IBAN DE 03501900007000903005

Geschäftsführer:



HRB 49940


Anaolog Output

The analog output is a no isolated 0 to 10,5V output. Maximum load is 1kOhm.

Due to the small drift, the signal may be out of the measuring range. For this reason, the measuring range 0-100 vol.% is represented by 1-10 Volts. So the analog signals may represent from -7 to 105 vol.%.

Analog output is converted back to gas concentration with the following formula:

GasConcentration[vol.%] = (AnalogOutput [Volt] – 1Volt) / 0,9

Adresse:

MessKonzept GmbH



Germany

Kontakt:

Tel.: +49 69 530564 44



Kto.-Nr. 7000903005

BLZ 501 900 00


IBAN DE 03501900007000903005

Geschäftsführer:



HRB 49940


7.

FTC200 – Serial communication

The basic parameter for serial polling is the Parameter P0, which returns the actual measured concentration in ppm. Polling is achieved by sending the string like “P0?” followed by CR ASCII command (CHR(13)). In hexadecimal notation the sequence is:“0x50303F0D”.The answer is a string containing the questioned parameter, its value and a system status byte. This could be a string like

“P0=F3.041e+03:0x1C04” followed by CR command. “P0” is the questioned parameter. The sequence after the character “F” until the colon ”:” is the questioned value “3.041e+03” in exponential notation (here 3041 ppm).

P125

P153

P154

P155

P156

P157

P158

P55

P56

P57

P58

P59

P60

P61

P87

P88

P89

P92

P94

P110

P39

P41

P42

P43

P44

P45

P52

P53

P54

Parameter Min

P0

P3

P11

P16

P29

P30

P31

P32

0

-1,E+06

0

0

0

0

0

0

-10

0

0

0

-1,E+06

180

180

10

-100

0

0

0

0

0

0

0

160

0

0

Max

0 1,00E+06

Default

0 1000000

0 32000

Type

F32_4e

F32_2f

1200 F32_0f

100

1023

0

0

0

100

255

0

280

1 F32_2f

0 F32_0f

0 F32_2f

0 F32_3f

0 F32_60f

0 F32_0f

1 F32_0f

Unit

ppm

mV

s

s

Access Name

RO

RO

RW

RW

RW

RO

RO

RO

RW

RW

0 F32_60f

200 F32_2f

RW

Ohm RW

TC Average

Warmup Time

Misc. Action

Sensor Type

Sensor Date

Rm10+Rm20

Comment

Compound ppm Output signal in ppm

Raw signal in mV

Heat up after commissioning

T90 Response Adjustable output averaging

Bridge Bal.

HW Version

SW Version

SW Date

Membrane temp. setting

Hardware version number

Firmware version number

Firmware date

Triggers internal routines

Sensor type

Sensor date

Membrane resistor at 0°C

300

300

100

100

2

1,E+06

10

5

1,E+06

10

1,E+06

1,E+06

10

10000

10000

10000

1,E+06

220 F32_2f

220 F32_2f

60 F32_1f

0 F32_1f

1 F32_0f

100 F32_1f

1 F32_1f

1 F32_0f

500 F32_1f

1 F32_1f

0 F32_1f

1,E+06 1000000 F32_1f

0 F32_6f

1 F32_6f

~1920 F32_3f

~1950 F32_3f

~1640 F32_3f

0 F32_1f

Ohm RW

Ohm RW

°C

°C

RW

RO

RW ppm RW

% RW

RW ppm RW

% RW

ppm RW

ppm RW

ppm RW

RW

mV RW

mV RW

mV RW

ppm RW

Rt10

Rt20

Block Set T

Block Temp.

R1 Mode

R1 Threshold

R1 Hyst.

R2 Mode

R2 Threshold

R2 Hyst.

Offset Gas

Gain Gas

PolyOffset

PolyGain

TC at N2

TC at O2

TC at Ar

Offset P12

Comparator resistor at 0°C

Heat drain temp. sensor at 0°C

Heat drain temperature set point

Heat drain temperature

Alarm 1 operation mode

Alarm 1 threshold value

Alarm 1 hysteresis

Alarm 2 operation mode

Alarm 2 threshold value

Alarm 2 hysteresis

Offset gas concentration set

Gain gas concentration set

Offset for gas linearized in user polyn.

Gain for gas linearized in user polyn.

Raw signal in mV at N2

Raw signal in mV at O2

Raw signal in mV at Ar

Offset for gas linearized in polyn. 12

-10

0

-1,E+06

-1000

0

-1,E+06

10

10

1,E+06

1000

10

1,E+06

1000

1 F32_6f

0 F32_0f

0 F32_3f

1 F32_6f

0 F32_0f

0 F32_3f

1 F32_6f

V

V

RW

RW

RW

RW

RW

RW

RW

Gain P12 Gain for gas linearized in polyn. 12

AOut1-Param Routing of Analog Out 1

AOut1-Offset

AOut1-Gain

Analog Out1 offset

Analog Out1 gain

AOut2-Param Routing of Analog Out 2

AOut2-Offset Analog Out 2 offset

AOut2-Gain Analog Out 2 gain -1000

Adresse:

MessKonzept GmbH



Germany

Kontakt:

Tel.: +49 69 530564 44



Kto.-Nr. 7000903005

BLZ 501 900 00


IBAN DE 03501900007000903005

Geschäftsführer:



HRB 49940


Starting internal functions like calibration are initiated by writing a command value to parameter

P39. The command values for parameter P39 are as follows:

0 – Do nothing

1 – Restart System

2 – Reset to factory settings

21 – Calculate and save “CALIBRATION OFSET GAS”

22 – Calculate and save “CALIBRATION GAIN GAS”

50 – Load calibration values from hidden “FLASH-RAM”

6 – Set alarms “ACTIVE OFF” 51 – Save calibration values to hidden “FLASH-RAM”

7 – Set alarms “ACTIVE ON”

For example, calibrating the OFFSET is performed by sending “P39=F21” followed by the ASCII

CR command. Attention before starting the calibration routine, make sure that the proper offset gas – previously defined in parameter P60 – has been applied for a sufficient time to the detector.

The command “P39=F22” followed by CR will start the gain calibration routine. The proper gain gas – previously defined in Parameter P61 - must have been applied to the detector for a sufficient time.


Never start a Gain calibration without a prior Offset calibration. In many applications offset calibration alone is sufficient for a proper performance of the instrument.

The answer after initiation of Offset calibration is “P39=F21:0x1C04” where the status byte can be different. After processing the demanded routine the command value of the respective parameter is set back to “0”.

Adresse:

MessKonzept GmbH



Germany

Kontakt:

Tel.: +49 69 530564 44



Kto.-Nr. 7000903005

BLZ 501 900 00


IBAN DE 03501900007000903005

Geschäftsführer:



HRB 49940


8.

Calibration

For Offset calibration apply the proper offset gas – previously defined in parameter P60 – to the detector. Wait until the indication is stable. Then press the calibration button. The string

“P39=F21” followed by CR is send and the Offset calibration routine is performed. The signal is averaged for a period of 10 seconds, calculation is done and the result is stored.

The proper gain gas – previously defined in Parameter P61 - must be applied to the detector until indication is stable. Pressing the calibration button string “P39=F22” followed by CR is sent and will start the gain calibration routine.


Never start a Gain calibration without a prior Offset calibration. In many applications offset calibration alone is sufficient for a proper performance of the instrument.

9.

Specifications

Dimensions with connectors; weight

Power supply

RS232 - Baudrate / Data

Ambient temperature range

Linearity

Warm up time

Flow rate

T90-time

Noise

Drift at zero point

Repeatability

Error due to change of ambient temperature

Error due to change of flow at 80l/h

Gas pressure

B=64mm, H=40mm, D=75mm; ~ 350g

24V DC (18V to 36V), 700mA

19200 / 8bit

-5°C to 50°C, other on request

< 1% of range

Approx. 30min; 1h for small ranges

40l/h-150l/h, recommended 60l/h to 80l/h

<1sec at flow rate higher 60l/h

< 1% of smallest range

< 2% of smallest range per week

< 1% of range

< 1% of smallest range per 10°C

< 1% of smallest range per 10l/h

Max. 4000kPa (40 bar)

Error due to change of pressure (above 800hPa) < 0.5% of smallest range per 10hPa

The above given specifications are guideline values for orientation. They may differ for certain gas compositions.

Adresse:

MessKonzept GmbH



Germany

Kontakt:

Tel.: +49 69 530564 44



Kto.-Nr. 7000903005

BLZ 501 900 00


IBAN DE 03501900007000903005

Geschäftsführer:



HRB 49940


FTC200 OEM - MessKonzept

FTC200-OEM

Fast Thermal Conductivity Analyzer

Operating Manual

Version 1.04 © MessKonzept GmbH

Content

Description

Measuring gases and ranges

Purchased parts package

Electrical Connect ion

Pneumatic Connection

Mounting

Anaolog Output

FTC200 – Serial communication

Calibration

Specifications

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