Bühler technologies TC-Standard X2 Series User manual

Gas Analysis
Installation and Operation Instructions
Original instructions
Sample gas cooler
TC-Standard (+) X2
BE440023
12/2020
Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen
Tel. [phone] / 49 89-0, Fax: [phone] / 49 89-20
E-Mail: [email protected]
Internet: www.buehler-technologies.com

Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen
Tel. [phone] / 49 89-0, Fax: [phone] / 49 89-20
Internet: www.buehler-technologies.com
E-Mail: [email protected]
Read this instruction carefully prior to installation and/or use. Pay at-
tention particularly to all advises and safety instructions to prevent in-
juries. Bühler Technologies can not be held responsible for misusing
the product or unreliable function due to unauthorised modifications.
All rights reserved. Bühler Technologies GmbH 2023
Document information
Document No..........................................................BE440023
Version......................................................................... 12/2020

TC-Standard (+) X2
Contents
1 Introduction.....................................................................................................................................................................................................................3
1.1 Intended use .........................................................................................................................................................................................................3
1.2 Overview ................................................................................................................................................................................................................3
1.3 Type plate ..............................................................................................................................................................................................................4
1.4 Scope of delivery..................................................................................................................................................................................................4
1.5 Ordering instructions......................................................................................................................................................................................... 5
1.5.1 Gas cooler models with one heat exchanger ............................................................................................................................... 5
1.5.2 Gas cooler models with two heat exchangers.............................................................................................................................6
1.5.3 Gas cooler model with two heat exchangers in series .............................................................................................................. 7
2 Safety instructions .........................................................................................................................................................................................................8
2.1 Important notices................................................................................................................................................................................................8
2.2 General hazard warnings .................................................................................................................................................................................9
3 Transport and storage .................................................................................................................................................................................................11
4 Installation and connection ...................................................................................................................................................................................... 12
4.1 Installation site requirements....................................................................................................................................................................... 12
4.2 Installation .......................................................................................................................................................................................................... 12
4.2.1 Connecting the filter gas connections (optional) ..................................................................................................................... 12
4.2.2 Flow adapter connection (optional) ............................................................................................................................................. 12
4.2.3 Connecting the moisture detector (option) ............................................................................................................................... 12
4.2.4 Peristaltic pump connector (optional)......................................................................................................................................... 13
4.2.5 Connecting the heat exchanger..................................................................................................................................................... 13
4.3 Electrical connections....................................................................................................................................................................................... 14
4.4 Signal outputs.....................................................................................................................................................................................................15
5 Operation and control .................................................................................................................................................................................................17
5.1 Description of functions...................................................................................................................................................................................17
5.2 Delta T control option .......................................................................................................................................................................................17
5.3 Use of menu functions..................................................................................................................................................................................... 18
5.3.1 Lock Menu............................................................................................................................................................................................. 18
5.3.2 Menu navigation overview ............................................................................................................................................................. 19
5.4 Description of menu functions ..................................................................................................................................................................... 21
5.4.1 Display menu....................................................................................................................................................................................... 21
5.4.2 Main menu........................................................................................................................................................................................... 21
5.4.3 Submenu 1............................................................................................................................................................................................22
5.4.4 Submenu 1 (global settings)............................................................................................................................................................23
5.4.5 Set favourite menu............................................................................................................................................................................26
6 Maintenance..................................................................................................................................................................................................................27
7 Service and repair.........................................................................................................................................................................................................28
7.1 Troubleshooting ................................................................................................................................................................................................28
7.1.1 Error messages on the display........................................................................................................................................................29
7.2 Safety instructions ........................................................................................................................................................................................... 30
7.3 Cleaning and removal of the heat exchanger........................................................................................................................................... 31
7.4 Replacing the hoses of the peristaltic pump (option) ............................................................................................................................ 31
7.5 Replacing the filter element (option).......................................................................................................................................................... 31
7.6 Drying of the moisture detector (option)...................................................................................................................................................32
7.7 Calibration of the moisture detector (option) ..........................................................................................................................................32
7.8 Replacing the base unit...................................................................................................................................................................................32
7.9 Spare parts and accessories ...........................................................................................................................................................................33
7.9.1 Consumables and accessories ........................................................................................................................................................33
8 Disposal ...........................................................................................................................................................................................................................34
9 Appendices .....................................................................................................................................................................................................................35
9.1 Gas cooler technical data................................................................................................................................................................................35
9.2 Technical Data - Options .................................................................................................................................................................................36
9.3 Flow diagrams....................................................................................................................................................................................................37
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9.4 Performance curves..........................................................................................................................................................................................38
9.5 Heat exchanger..................................................................................................................................................................................................39
9.5.1 Heat exchanger description............................................................................................................................................................39
9.5.2 Heat exchanger overview ................................................................................................................................................................39
9.6 Dimensions (mm)............................................................................................................................................................................................. 40
10 Attached documents ...................................................................................................................................................................................................42
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1 Introduction
1.1 Intended use
This unit is intended for industrial use in gas analysis systems. It's an essential component for conditioning the sample gas to
protect the analysis instrument from residual moisture in the sample gas.
The device must not be operated in a zone2, explosion class IIC (ATEX, IECEx and EACEx) explosive gas atmosphere which is
rarely and only temporarily explosive, and in classI, division2 (US & Canada).
Optional installation of various add-on equipment may limit the area of application of this device.
Coolers with Canada certificate and IECEx
The device must be installed in a lockable IP54 housing.
Coolers with USA certificate
The device must be installed in a lockable IP54 housing suitable for one or more classIdivision2 wiring methods according to
National Electric Code (ANSI/NFPA70).
Coolers with ATEX certificate
The device must be installed in an IP54 rated housing which meets the requirements of EN60079-15. The housing must require a
tool which meets the requirements of EN60079-0 and EN60079-15 to open.
Coolers with EAC Ex certificate
The device must be installed in an IP54 rated housing which meets the requirements of Ghost14254-2015.
Please note the specifications in the data sheet on the specific intended use, existing material combinations, as well as pressure
and temperature limits.
1.2 Overview
The TC-StandardX2 series was designed specifically for high cooling capacities and high ambient temperatures.
The TC-Standard+X2 series was designed specifically for the requirements in so-called automated measuring systems(AMS) ac-
cording to EN15267-3. The series connection of the heat exchangers will cool in two cycles to minimise wash out effects.
The Peltier cooler is distinguished by two types according to cooling capacity or operation temperature. This classification is re-
flected in the type designation. The exact item number of the model defined by you is determined by the model code in the cat-
egory ordering information.
Application Standard applications
Operation temperature 40 °C 50 °C
1 heat exchanger TC-Standard 6111 X2 TC-Standard 6112 X2 3rd digit=1
2 heat exchangers TC-Standard 6121 X2 TC-Standard 6122 X2 3rd digit=2
2 heat exchangers in series TC-Standard+ 6121 X2 TC-Standard+ 6122 X2 3rd digit=2
4th digit=1 4th digit=2
Additional components which every conditioning system should feature can optionally be integrated:
– Peristaltic pump for condensate separation,
– Filter,
– Moisture detector.
This allows for various configurations of cooler and options. Here the approach is to simplify creating a complete system in a
cost-efficient way through pre-installed components with hoses connected. We further paid attention to easy access to wear
parts and consumables.
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1.3 Type plate
Example:
Manufacturer and address
Type designation and voltage
Serial no., item no.
Certification markings
(Atex, IECEx and US/Canada)
EAC Ex approval number
Description
Date of manufacturing
TC-Standard 230 V, 50/60Hz, 130W
101001081115 449621112412510011010
FM18ATEX0012X II 3 G Ex ec nC IIC T4 Gc
IECEx FMG 18.0005X Ex ec nC IIC T4 Gc
USA/Canada: CL I DIV 2 GP ABCD
RU C-DE.HA65.B.00608/20
0°C...50°C
09/2018 BX440023
1.4 Scope of delivery
– Cooler
– Product documentation
– Connection-/mounting accessories (optional)
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1.5 Ordering instructions
1.5.1 Gas cooler models with one heat exchanger
The item number is a code for the configuration of your unit. Please use the following model code:
4496 2 1 1 X 2 X 1 X X X 0 X X X 0 X 0 Product Characteristics
Gas cooler models (with 1 heat exchanger)
1 TC-Standard 6111 X2: Ambient temperature 40 °C
2 TC-Standard 6112 X2: Ambient temperature 50 °C
Certifications
2 for explosive areas
Supply voltage
1 115 V AC, 50/60 Hz
2 230 V AC, 50/60 Hz
4 24 V DC
Heat exchanger
1 1 0 Stainless steel, PTS, metric
1 1 5 Stainless steel, PTS-I, US
1 2 0 Duran glass, PTG, metric
1 2 5 Duran glass, PTG-I, US
1 3 0 PVDF, PTV, metric
1 3 5 PVDF, PTV-I, US
Peristaltic pumps *
0 0 without peristaltic pump
1 0 CPsingle X2 with hose nipple, angled
3 0 CPsingle X2 with screw connection
Moisture detector / filter
0 0 without filter, without moisture detector
0 1 without filter, 1 moisture detector with PVDF adapter **
1 0 1 filter, without moisture detector
1 1 1 filter with built-in moisture detector
Signal outputs
0 0 status output only
1 0 Analog output, 4…20 mA additional
Delta T control
0 0 without Delta T control
1 0 Delta T control option
* 24 V DC version not available.
** Also available in stainless steel.
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1.5.2 Gas cooler models with two heat exchangers
The item number is a code for the configuration of your unit. Please use the following model code:
4496 2 1 2 X 2 X 2 X X X 0 X X X 0 X 0 Product Characteristics
Gas cooler models (with 2 heat exchangers)
1 TC-Standard 6121 X2: Ambient temperature 40 °C
2 TC-Standard 6122 X2: Ambient temperature 50 °C
Certifications
2 for explosive areas
Supply voltage
1 115 V AC, 50/60 Hz
2 230 V AC, 50/60 Hz
4 24 V DC
Heat exchanger
2 1 0 Stainless steel, 2 MTS, metric
2 1 5 Stainless steel, 2 MTS-I, US
2 2 0 Duran glass, 2 MTG, metric
2 2 5 Duran glass, 2 MTG-I, US
2 3 0 PVDF, 2 MTV, metric
2 3 5 PVDF, 2 MTV-I, US
Peristaltic pumps *
0 0 without peristaltic pump
2 0 CPdouble X2 with hose nipple, angled
4 0 CPdouble X2 with screw connection
Moisture detector / filter
0 0 without filter, without moisture detector
0 1 without filter, 1 moisture detector with PVDF adapter **
0 2 without filter, 2 moisture detectors with PVDF adapter **
1 0 1 filter, without moisture detector
1 1 1 filter with built-in moisture detector
2 0 2 filters, without moisture detector
2 1 2 filters, 1 moisture detector
2 2 2 filters, 2 moisture detectors
Signal outputs
0 0 status output only
1 0 Analog output, 4…20 mA additional
Delta T control
0 0 without Delta T control
1 0 Delta T control option
* 24 V DC version not available.
** Also available in stainless steel.
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1.5.3 Gas cooler model with two heat exchangers in series
The item number is a code for the configuration of your unit. Please use the following model code:
4496 2 1 2 X 2 X 1 X X X 0 X X X 0 0 0 Product Characteristics
Gas cooler models (with 2 in-line heat exchangers)
1 TC-Standard+ 6121 X2 Ambient temperature 40 °C
2 TC-Standard+ 6122 X2 Ambient temperature 50 °C
Certifications
2 for explosive areas
Supply voltage
1 115 V AC, 50/60 Hz
2 230 V AC, 50/60 Hz
4 24 V DC
Heat exchanger
1 2 2 Duran glass, 2x MTG-2, metric
1 2 7 Duran glass, 2x MTG-2-I, US
1 3 2 PVDF, 2x MTV-2, metric
1 3 7 PVDF, 2x MTV-2-I, US
Peristaltic pumps *
0 0 without peristaltic pump
2 0 CPdouble X2 with hose nipple, angled
4 0 CPdouble X2 with screw connection
Moisture detector / filter
0 0 without filter, without moisture detector
0 1 without filter, 1 moisture detector with PVDF adapter **
1 0 1 filter, without moisture detector
1 1 1 filter with built-in moisture detector
Signal outputs
0 0 status output only
1 0 Analog output, 4…20 mA additional
* 24 V DC version not available.
** Also available in stainless steel.
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2 Safety instructions
2.1 Important notices
NOTICE
The device is suitable for hazardous areas.
This unit may only be used if:
– The product is being used under the conditions described in the operating- and installation instructions, used according to
the nameplate and for applications for which it is intended. Any unauthorized modifications to the unit will void the war-
ranty provided by Bühler Technologies GmbH,
– The specifications and markings in the type plate must be observed,
– The threshold values in the data sheet and the instructions must be observed,
– Monitoring equipment / protection devices must be connected correctly,
– Service and repair work not described in these instructions are performed by Bühler Technologies GmbH,
– Genuine replacement parts must be used.
Erecting electrical systems in explosive areas requires compliance with the following national regulations:
– IEC/EN60079-14
– National electric code (NEC)
– Canadian electric code (CEC)
Additional national regulations pertaining to initial operation, operation, maintenance, repairs and disposal must be observed.
These operating instructions are a part of the equipment. The manufacturer reserves the right to change performance-, specific-
ation- or technical data without prior notice. Please keep these instructions for future reference.
Signal words for warnings
DANGER
Signal word for an imminent danger with high risk, resulting in severe injuries or death if not avoided.
WARNING
Signal word for a hazardous situation with medium risk, possibly resulting in severe injuries or death if not
avoided.
CAUTION
Signal word for a hazardous situation with low risk, resulting in damaged to the device or the property or
minor or medium injuries if not avoided.
NOTICE
Signal word for important information to the product.
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Warning signs
These instructions use the following warning signs:
Warns of a general hazard General notice
Warns of voltage Unplug from mains
Warns not to inhale toxic gasses Wear respiratory equipment
Warns of corrosive liquids Wear a safety mask
Warns of explosive areas Wear gloves
Warns of hot surfaces
2.2 General hazard warnings
The equipment must be installed by a professional familiar with the safety requirements and risks.
Be sure to observe the safety regulations and generally applicable rules of technology relevant for the installation site. Prevent
malfunctions and avoid personal injuries and property damage.
The operator of the system must ensure:
– Safety notices and operating instructions are available and observed,
– The respective national accident prevention regulations are observed,
– The permissible data and operational conditions are maintained,
– Safety guards are used and mandatory maintenance is performed,
– Legal regulations are observed during disposal,
– compliance with national installation regulations.
Maintenance, Repair
Please note during maintenance and repairs:
– Repairs to the unit must be performed by Bühler authorised personnel.
– Only perform conversion-, maintenance or installation work described in these operating and installation instructions.
– Always use genuine spare parts.
– Do not install damaged or defective spare part. If necessary, visually inspect prior to installation to determine any obvious
damage to the spare parts.
Always observe the applicable safety and operating regulations in the respective country of use when performing any type of
maintenance.
DANGER Electrical voltage
Electrocution hazard.
a) Disconnect the device from power supply.
b) Make sure that the equipment cannot be reconnected to mains unintentionally.
c) The device must be opened by trained staff only.
d) Regard correct mains voltage.
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DANGER Toxic, corrosive gas/condensate
Sample gas/condensate may be hazardous to health.
a) If necessary, ensure a safe gas/condensate discharge.
b) Always disconnect the gas supply when performing maintenance or repairs.
c) Protect yourself from toxic/corrosive gasses/condensate when performing mainten-
ance. Wear appropriate protective equipment.
DANGER Explosion hazard
Life and explosion risk may result from gas leakage due to improper use.
a) Use the devices only as described in this manual.
b) Regard the process conditions.
c) Check tubes and hoses for leakage.
WARNING Risk of breakage
a) Protect the equipment against being hit.
b) Protect the device against falling objects.
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3 Transport and storage
Only transport the product inside the original packaging or a suitable alternative.
The equipment must be protected from moisture and heat when not in use. It must be stored in a covered, dry and dust-free
room at a temperature of -20 °C to 60 °C (-4 °F to 140 °F).
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4 Installation and connection
4.1 Installation site requirements
The unit is only intended for wall-mounted use in enclosed areas. Adequate protection from the weather must be provided
when used outdoors.
Install the unit leaving enough room below the cooler to discharge the condensate. Leave room above for the gas supply.
Be sure to maintain the approved ambient temperature. Do not obstruct the convection of the cooler. The vents must have
enough room to the next obstacle. The distance must especially be a minimum of 10 cm on the air outlet side.
Ensure adequate ventilation when installing in enclosed housings, e.g. analyser cabinets. If the convection is inadequate, we re-
commend aerating the cabinet or installing a fan to lower the inside temperature.
4.2 Installation
Run the gas supply to the cooler with a downward slope. The gas inputs are marked in red and additionally labelled "IN".
If a large amount of condensate accumulates, we recommend using a condensate trap with automatic condensate drain. Our
condensate drains, 11LDV38, AK20, AK5.5 OR AK5.2, are suitable.
Glass vessels and automatic condensate drains are available for draining condensate for external mounting below the unit.
When using automatic condensate drains, the sample gas pump must be installed upstream of the cooler (pressure operation)
to ensure proper function of the condensate drain.
If the sample gas pump is located at the cooler outlet (suction operation), we recommend using glass condensate traps or peri-
staltic pumps.
Connecting the condensate drain
Depending on the material, build a connecting line with fittings and tubing or hose between the heat exchanger and condens-
ate drain. For stainless steel the condensate drain can be hung directly from the connecting tube, for hoses the condensate drain
must be secured separately using a clamp.
The condensate drain can be mounted directly to the heat exchanger.
Condensate lines must always be installed with a slope and a minimum inside diameter of 6 mm (1/4").
The MTG heat exchanger (in coolers with 2 heat exchangers) can only be operated with peristaltic pumps.
4.2.1 Connecting the filter gas connections (optional)
The connection between the heat exchanger outlet and the filter inlet already has tubing. The connection G1/4 or NPT 1/4" (filter
head marked NPT) for the gas outlet must be carefully and properly connected using a suitable screw connection.
When ordering the cooler with the option filter without Moisture detector, a bypass may be connected to the filter head.
The filter head is intended for a G1/4 internal screw thread which is plugged at the factory. To use it, unscrew the plug and screw
in a suitable screw connection. Pay attention to leaks.
NOTICE
Installing filters limits the maximum approved operating pressure in the system!
Operating pressure ≤ 2 bar
4.2.2 Flow adapter connection (optional)
When ordering the cooler with the option moisture detector without filter, it will be factory installed inside a flow adapter.
The connection between the heat exchanger outlet and the flow adapter inlet does not have tubing included. The connection
G1/4 or NPT1/4" (flow adapter marked NPT) for the gas inlet/outlet must be carefully and properly connected using a suitable
screw connection. Here the direction of flow is not relevant.
4.2.3 Connecting the moisture detector (option)
When ordering the cooler with moisture detector option, it will be factory installed inside a flow adapter, or for the filter option
installed and connected in the filter head.
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4.2.4 Peristaltic pump connector (optional)
Coolers ordered with attached peristaltic pump already have it installed and wired. Heat exchangers ordered at the same time
are already installed and connected to the peristaltic pump.
The ø6mm (0.24inch) hose nipple for the pump’s condensate outlet must be carefully and properly connected with a suitable
hose and hose clamp.
Versions with screw connections DN4/6 or 1/6”-1/4” are supplied with ferrule and knurled nut and must be carefully sealed
with appropriate hose.
NOTICE
Installing peristaltic pumps CPsingle / CPdouble limits the maximum permissible oper-
ating pressure in the system!
Operating pressure ≤ 1 bar
4.2.5 Connecting the heat exchanger
The picture on the left shows the schematics for connecting two separate heat exchangers.
To minimise gas wash out in the cooler, the two (identical) heat exchangers must be operated in series (right picture). This
should be done as follows:
1. Gas inlet line to red gas inlet on heat exchanger 2 (pre-cooling).
2. Connection between gas outlet on heat exchanger 2 and the red gas inlet on heat exchanger 1 (after-cooling).
3. Attaching the final gas output line to the gas outlet on heat exchanger 1.
gas out gas in gas out gas in
condensate out condensate out
Heat exchanger 1 Heat exchanger 2
Gas cooler
(two single heat exchangers)
gas out
gas in
gas out
gas in
condensate out condensate out
Heat exchanger 1 Heat exchanger 2
Gas cooler +
(two heat exchangers in series)
The gas inputs are marked in red.
On glass heat exchangers the correct position of the seal is important when connecting the gas lines (see image). The seal con-
sists of a silicone ring with a PTFE sleeve. The PTFE side must face the glass thread.
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Glass PTFE
4.3 Electrical connections
The operator must install an external separator for the device which is clearly assigned to this device.
This separator
– must be located near the device,
– must be easy for the operator to reach,
– must comply with IEC 60947-1 and IEC 60947-3,
– must separate all live conductors and the status output, and
– must not be attached to the power feed.
The mains supply of the device must be fused according to the specifications under technical data.
Potential equalization/static charge
Static charges can result in incendive sparking. Avoid static charges. Any conductive parts of the cooler must be grounded!
The housing has a connection for an earth/equipotential bonding conductor. Ensure the housing is adequately earthed (min-
imum conductor cross-section 4 mm2).
Particularly observe the requirements of EN 60079-14!
WARNING Hazardous electrical voltage
The device must be installed by trained staff only.
CAUTION Wrong mains voltage
Wrong mains voltage may damage the device.
Regard the correct mains voltage as given on the type plate.
WARNING High voltage
Damage to the device in case of insulation testing
Do not proceed insulation tests with high voltage to the device as a whole!
Electric strength test
This device is equipped with extensive EMC protection. The necessary tests were carried out at the factory (test voltage 2.1kV or
2.55kVDC depending on approval).
If you wish to check the electric strength again yourself, you can do so on the entire unit. Only test the device with the specified
values using direct current voltage. Testing the electric strength with alternating current voltage will damage electronic com-
ponents. The recommended voltage in this case is 2.1kV DC, 2s. Disconnect all supply lines from the device before testing. Power
can be supplied via the mains connection.
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Plug connection
This device has one EN 175301-803 plug each for the power supply and the signal output. If the lead is connected correctly, these
cannot be confused. Therefore please be sure to correctly reassemble the plugs after connecting the wires. Below you will find
the pin assignments, with the numbers corresponding to those on the plugs:
The supply line cross-sections must be suitable for the rated current. Use a maximum line cross-section of 1.5mm² (AWG16) and
a cable diameter of 8-10mm (0.31-0.39 inch).
Plug numbering Electric supply S1
115/230 V (24 V DC)
Alarm contact S2 * Analogue output S3
1 - N/C
2 - N/C
3 - GND
4 - 4-20 mA out
5 - shield
(+24 V)
(-24 V)
*
* When using an alarm contact, connect to ≥33VAC or ≥70VDC PE voltage.
The clamping area is 8-10mm (0.31–0.39 inches) in diameter.
4.4 Signal outputs
The device provides different status signals. The maximum switching load of the alarm outputs is limited to 250VAC/150VDC,
2A, 50VA each.
An alarm is triggered by the alarm contact/status output (S2) if the temperature of the cooler is outside the specified limits. It
does not indicate if the alarm was triggered due to excess temperature or insufficient temperature.
The front film has three LEDs:
Colour Marking Function
Red S2 High/low temperature, device error
Yellow S1 ---
Green OP Normal operation
The LEDs OP and S2 indicate the device status similar to S2.
If the option “temperature signal” is built in, the unit has a signal output via the analogue output to indicate the actual cooler
temperature.
When the moisture detector (optional) is installed, an alarm is activated by the alarm contact/status output (S2) if the moisture
is still present in the prepared sample gas. Thereby, no distinction is made between the alarm/cable break triggered by moisture
detector 1 or 2. This information is displayed by an error message instead.
The temperature signal can be read via the panel plug (S3) using the M12x1 connector. This plug is located next to the moisture
detector connectors at the top of the cooler.
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Description of signal outputs
Function / contact
type
Description
Regarding S2) internal changeover
contact: max.
250VAC / 150VDC,
2A, 50VA
the following device statuses can
be indicated via two switching
outputs:
Contact between 3 and 2 closed (alarm)
– No mains voltage and/or actual temperature out-
side the alarm thresholds
Contact between 3 and 1 closed (ok)
– Mains voltage attached + actual temperature
within the alarm thresholds
With moisture detector option
Contact between 3 and 2 closed (alarm)
– The moisture detector registers residual humidity
in the sample gas or cable break: Error message
Contact between 1 and 3 closed (ok)
– no residual moisture in measuring gas / no cable
break
With temperature signal option
Regarding S3) 4-20mA analogue
output
(RLoad<500Ω)
Signalling of actual temperature
(please use shielded cables)
TCooler = -20°C ≙ (-4°F) -> 4mA/ 2 V
TCooler = 5°C ≙ (41°F) -> 9mA/ 4,5 V
TCooler = 60°C ≙ (140°F) -> 20mA/ 10 V
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5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
After switching on the cooler the block temperature will be displayed. The display will flash until the block temperature has
reached the preset target value (± adjustable alarm range). The status contact is in the Alarm position.
Once the target temperature range has been reached, the temperature will continuously be displayed and the status contact
switches over.
If the display flashes during operation or an error message appears, please refer to bullet “Troubleshooting”.
Please refer to the data sheet for performance data and maximum ratings.
5.1 Description of functions
The cooler is controlled by a microprocessor. With the factory preset the control already incorporates the various characteristics
of the built-in heat exchangers.
The programmable display shows the block temperature in the selected display unit (°C/°F) (factory preset °C). Application-spe-
cific settings can easily be configured guided by the menu, using the 5 buttons. For one, this applies to the target outlet dew
point, which can be set from 2 to 20°C (36°F to 68°F) (factory preset 5°C/41°F).
And then the warning thresholds can be adjusted for low and excess temperature. These are set relative to the outlet dew point
τa setting.
For the low temperature the range is τa -1 to - 3K (at a minimum 1°C/ 34°F cooling block temperature), for the excess temperat-
ure the range is τa +1 to +7K. The factory presets for both values are 3K.
The flashing display and the status relays indicate the conditions are below or above the configured warning range (e.g. after
switching on).
The status output can e.g. be used to control the sample gas pump to allow for the gas flow to only be switched on once the per-
missible cooling range has been reached or shut off the pump in the event of a moisture detector alarm.
The separated condensate can be drained via connected peristaltic pumps or add-on automatic condensate drains.
Fine mesh filters can also be used, which in turn can be installed in optional moisture detectors.
The glass dome allows the dirt level of the filter element to easily be determined.
The moisture detector is easy to remove. This may be required if a condensate enters the cooler due to a malfunction and the
peristaltic pump or the automatic condensate drain is unable to remove it.
5.2 Delta T control option
Not all applications require an outlet dew point of 5°C (41°F). In some applications a higher dew point is sufficient. In other ap-
plications a stable outlet dew point doesn’t matter, it’s enough for the gas to be dry, so if the outlet dew point has an adequate
difference in temperature below the ambient temperature.
Here the electronics measure the ambient temperature and regulate the outlet dew point to an adjustable value below it. This
extends the potential cooling capacity to the limits of the heat exchanger. Here it’s important to note the outlet dew point fluc-
tuates along with the ambient temperature and a stable dew point cannot be a prerequisite for the measurement.
The target temperature range is defined by the ambient temperature, the adjustable temperature difference and the alarm lim-
its. If the block temperature is not within the target range with active Delta T-control, the status message "dt" will flash in the
display.
Example: At a difference of 30°C (30 K/54 °F), at a set outlet dew point of 5°C (41°F) this means the dew point remains stable up
to an ambient temperature of approx. 35°C (95°F), and the safe drop is only preferred over the ambient temperature with ambi-
ent temperature peaks over 35°C (95°F). The cooling capacity specified in the cooling capacity graphs at 35°C (95°F) is then
available at above 35°C (95°F).
17Bühler Technologies GmbHBE440023 ◦ 12/2020

TC-Standard (+) X2
5.3 Use of menu functions
Brief description of the operating principle:
The unit is operated using 5 keys. Their functions are:
Button Section Functions
or
OK
Display – Switches from the measurement display to the main menu
Menu – Selects the menu item displayed
Enter – Applies an edited value or a selection
Display – temporarily switches to the alternative measurement display (if option installed)
Menu – Back
Enter – Increase value or browse selection
– Note:
– Press button 1 x = changes parameter / value by one;
– Hold button = fast mode (numerical values only)
– Display flashes: modified parameter/value
– Steady display: original display/value
Display – temporarily switches to the alternative measurement display (if option installed)
Menu – Next
Enter – Reduce value or browse selection
ESC
Menu – Move one level up
Enter – Return to menu
Changes will not be saved!
F
or
Func
– Sets a menu to favourite.
(Note: The favourite menu will also be activated with the menu locked!)
5.3.1 Lock Menu
Some menus can be locked to prevent inadvertently changing the settings of the unit. This requires setting a code. For informa-
tion on setting up or disabling the menu lock please refer to "Global Settings" (toP) under menu item toP>Loc.
The menu lock is not enabled at the time of delivery, all menu items can be accessed.
With the menu locked, only the following menu items will be visible without entering the correct code:
Menu item Explanation
toP > unit Temperature unit selection (°C or °F).
F or Func. Accessing the Favourites menu
NOTICE!This menu may be one that is normally locked.
18 Bühler Technologies GmbH BE440023 ◦ 12/2020