TVR-Ex | TROX INDIA PRIVATE LIMITED
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ATEX-compliant parts and units

ATEX-Zertifizierung_gc_01psd.png

ATEX certification

TVR-Ex_img_04psd.png
TVR-Ex_img_03psd.png
ATEX-Zertifizierung_gc_01psd.png

TVR-EX    

For the control of variable air volume flows in potentially explosive atmospheres (ATEX)

Circular VAV terminal units for variable air volume systems, approved and certified for potentially explosive atmospheres (ATEX)

  • ATEX-compliant construction and parts

  • Approved for all gases, mists and vapours in zones 1 and 2, with electronic control additionally for dusts in zones 21 and 22

  • Suitable for the control of supply or extract air as well as for differential pressure control

  • Electronic or pneumatic control components

  • Closed blade air leakage to EN 1751, up to class 4

  • Casing air leakage to EN 1751, class C

 


Optional equipment and accessories

  • Spring return actuator

  • Auxiliary switch with adjustable switching points for capturing the end positions

 

General information

Application

  • Circular EXCONTROL VAV terminal units of Type TVR-Ex for the precise supply air or extract air flow control in variable air volume systems
  • For use in potentially explosive atmospheres (ATEX)
  • Closed-loop volume flow control using an external power supply
  • Electronic or pneumatic volume flow control
  • Shut-off by means of switching (equipment supplied by others)


Special features

  • ATEX mark and certification
  • ATEX equipment group II, approved for use in zones 1 and 2; electronic control also for zones 21 and 22
  • Volume flow rate can later be measured and adjusted on site; configuration is possible using personal computer software


Nominal sizes

  • 125, 160, 200, 250, 315, 400


Classification

Electronic control: Equipment group II

  • Zones 1 and 2 (atmosphere: gases):
    II 2 G c II T5: 10 °C - 50 °C and T6: 10 °C - 60 °C
  • Zones 21 and 22 (atmosphere: dusts):
    II 2 D c II 80 °C

Pneumatic control: Equipment group II

  • Zones 1 and 2 (atmosphere: gases):
    II 2 G c II T5: 10 °C - 50 °C and T6: 10 °C - 60 °C




Parts and characteristics

  • Ready-to-commission unit which consists of mechanical parts and control components.
  • Averaging differential pressure sensor for volume flow rate measurement
  • Damper blade
  • Connection for equipotential bonding
  • Cable bushings suitable for use in potentially explosive atmospheres
  • ATEX-compliant control components, factory assembled and complete with wiring and tubing
  • Aerodynamic functional testing on a special test rig prior to shipping of each unit
  • Unit carries test label with relevant data
  • High control accuracy (even with upstream bend R = 1D)


Attachments

  • Electronic control
  • Pneumatic control


Accessories

  • Actuator with auxiliary switch for capturing the end positions
  • Spring return actuator


Technical data

  • Nominal sizes: 125 to 400 mm
  • Volume flow rate range: 15 to 1680 l/s or 54 to 6048 m³ /h
  • Volume flow rate control range: approx. 15 – 100 % of the nominal volume flow rate
  • Maximum differential pressure: 1000 Pa


Useful additions

  • Secondary silencer Type CA for demanding acoustic requirements


Construction features



  • Construction and materials comply with the EU directive and guidelines for use in potentially explosive atmospheres (ATEX)
  • Spigot with lip seal, for circular connecting ducts to EN 1506 or EN 13180



Materials and surfaces



  • Casing and inner duct made of galvanised sheet steel
  • Control components made of die cast aluminium (pneumatic control: plastic)
  • Plastic bearings
  • Damper blade of stainless steel with thermoplastic elastomer seal TPE
  • Differential pressure sensor made of aluminium
  • P1: Inner duct powder-coated
  • A2: Inner duct in stainless steel



Standards and guidelines

  • Directive 2014/34/EU: Equipment and protective systems intended for use in potentially explosive atmospheres


Maintenance

  • Maintenance-free as construction and materials are not subject to wear

Electronic control:

  • Zero point correction of the static differential pressure transducer should be carried out once per year (recommendation)

Technical information

Function, Technical data, Quick sizing, Specification text, Order code, Related Products

  • Function
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE

The VAV terminal unit is fitted with a differential pressure sensor for measuring the volume flow rate. The control components (attachments) include a differential pressure transducer that transforms the differential pressure (effective pressure) into an electric signal, a controller, and an actuator. For most applications, the setpoint value comes from a room temperature controller which is installed outside of the potentially explosive atmosphere. The controller compares the actual value with the setpoint value and alters the control signal of the damper actuator if there is a difference between the two values. The connections for the supply voltage and for the voltage signals are made in a terminal box that is suitable for use in potentially explosive atmospheres.


Nominal sizes125 – 400 mm
Volume flow rate range15 – 1680 l/s or 54 – 6048 m³/h
Volume flow rate control rangeApprox. 15 to 100 % of the nominal volume flow rate
Maximum differential pressure1000 Pa
Operating temperature10 to 50 °C


 


 Electronic control with attachment S1S, S1F, S1X or S1Y

S1SSchischek: Controller ExReg-V-300-A + actuator ExMax-5.10-CY
S1FSchischek: Controller ExReg-V-300-A + spring return actuator ExMax-5.10-CYF
S1XSchischek: Controller ExReg-V-300-A + actuator ExMax-5.10-CY + accessories ExSwitch and ExBox
S1YSchischek: Controller ExReg-V-300-A + spring return actuator ExMax-5.10-CYF + accessories ExSwitch and ExBox
Supply voltage24 V AC + 15% (24.0 ... 27.6 V AC), 50/60 Hz
Supply voltage24 V DC + 15% (24.0 ... 27.6 V DC)
IEC protection classIII (protective extra-low voltage)
EC conformityATEX to 2014/34/EU, EMC to 2014/30/EU, low voltage to 2014/35/EU
The information given here is just to give you an idea. 

For the latest information on the electronic attachments please refer to the technical data in the manufacturer's product documentation:
Schischek GmbH, 90579 Langenzenn, Germany, www.schischek.com, info@schischek.com
For the ExReg-V volume flow controller see the documentation from version V04 of 3 June 2022



Electronic control with attachment TES, TEF, TEX or TEY
Components

TESTROX controller TCU3 +

Schischek components: differential pressure transducer ExCos-P, actuator ExMax-5.10-Y
TEFTROX: Controller TCU3 +

Schischek components: differential pressure transducer ExCos-P, spring return actuator ExMax-5.10-YF
TEXTROX: Controller TCU3 +

Schischek components: differential pressure transducer ExCos-P + actuator ExMax-5.10-Y + accessories ExSwitch and ExBox
TEYTROX: Controller TCU3 +

Schischek components: differential pressure transducer ExCos-P + spring return actuator ExMax-5.10-YF + accessories ExSwitch and ExBox


 


 

Controller TCU3 (TROX)

Supply voltage24 V AC ±15% (20.4 .. 27.6 V), 50/60 Hz
Supply voltage24 V DC ±15% (20.4 .. 27.6 V)
Supply voltageOptional: 230 V AC mains supply (only with expansion module EM-TRF)
Power rating8 VA
Protection levelIP 20
IEC protection classIII (protective extra-low voltage) if 24 V AC/DC is used
InstallationIn closed rooms, outside of Ex zones (the TCU3 has to be installed away from TVR-Ex)
EC conformityEMC to 2014/30/EU


 


 


Differential pressure transducer (Schischek)

Supply voltage24 V AC ±20% (19.2 .. 28.8 V), 50/60 Hz
Supply voltage24 V DC ±20% (19.2 .. 28.8 V)
IEC protection classI (earthed)
Protection levelIP 66
EC conformityATEX to 2014/34/EU, EMC to 2014/30/EU


 


 


Actuator/spring return actuator (Schischek)

Supply voltage24... 240 V AC/DC, ±10%, self-adjusting, 50 – 60 Hz ±20%
Supply voltageWe recommend a mains connection for the actuator
Power ratingBe sure to see the additional information in the Schischek documentation
IEC protection classI (earthed)
Protection levelIP 66
EC conformityATEX to 2014/34/EU, EMC to 2014/30/EU, low voltage to 2014/35/EU

The information given here is just to give you an idea.
For the latest information on the electronic attachments please refer to the technical data in the manufacturer's product documentation:
Schischek GmbH, 90579 Langenzenn, Germany, www.schischek.com, info@schischek.com


 


 


 Pneumatic

Operating pressure1.3 bar ± 0.1 bar
Air consumption – volume flow control50 ln/h
Air consumption – pressure and volume flow cascade100 ln/h
Control pressure0.2 – 1.0 bar
Maximum pressure1.5 bar
Compressed airCompressed air for instruments, free of oil, water and dust
Protection levelIP 42

Quick sizing tables provide a good overview of the room sound pressure levels that can be expected. Approximate intermediate values can be interpolated. Precise intermediate values and spectral data can be calculated with our Easy Product Finder design program.

The first selection criteria for the nominal size are the actual volume flow rates qᵥmin and qᵥmax. The quick sizing tables are based on generally accepted attenuation levels. If the sound pressure level exceeds the required level, a larger air terminal unit and/or a silencer is required.

Volume flow rate ranges
The minimum differential pressure of VAV terminal units is an important factor in designing the ductwork and in rating the fan including speed control. Sufficient duct pressure must be ensured for all operating conditions and for all control units. The measurement points for fan speed control must be selected accordingly. The volume flow rates given for VAV terminal units depend on the nominal size and on the control component (attachment) that is installed. The tables give the minimum and maximum values for a VAV terminal unit. Some control components may only have a limited volume flow rate range. This applies in particular to control components with a static differential pressure transducer. For volume flow rate ranges for all control components refer to our Easy Product Finder design program.

TVR-Ex – electronic, volume flow rate ranges and minimum differential pressures

NS

qv [l/s]

qv [m3/h]

Δpstmin [Pa]

Δqv [±%]

1252279555515
12560216152020207
125105378455055606
125150540901001101155
16035126555515
160100360151515158
160175630354045457
160250900708085955
20060216555515
200160576151515157
2002801008353540405
2004051458657075805
25090324555515
250245882101010107
2504301548252530355
2506152214455055655
315145522555515
315410147651010107
3157202592152020207
31510303708303540405
400240864555515
400670241255557
40011754230151515156
40016806048253030355

① TVR-Ex
② TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 500 mm
③ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1000 mm
④ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1500 mm


 


TVR-Ex – pneumatic, volume flow rate ranges and minimum differential pressures

NS

qv [l/s]

qv [m3/h]

Δpst min [Pa]

Δqv [±%]

1251554555515
125401441010101010
12570252202525257
125100360404550555
1602590555515
160752701010101010
160125450202025257
160175630354045455
20040144555515
2001254501010101010
200210756202025257
2003001080404045455
25060216555515
250200720510101010
2503401224151520207
2504751710303035405
315105378555515
3153301188555510
3155551998101015157
3157752790202025255
400170612555515
4005451962555510
4009203312101010107
40013004680152020205

① TVR-Ex
② TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 500 mm
③ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1000 mm
④ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1500 mm


 


TVR-Ex, electronic, sound pressure level at differential pressure 150 Pa

NS

pv [l/s]

pv [m3/h]

Air-regenerated noiseCase-radiated noise

LPA [dB(A)]

LPA1 [dB(A)]

LPA2 [dB(A)]

1252279362516<1516
125602164536302825
1251053784940343231
1251505405241343235
160351264130221922
1601003604739343128
1601756305042373432
1602509005344393637
200602164132242221
2001605764740343329
20028010085044403832
20040514585445393838
250903243830242222
2502458824740343235
25043015484842383737
25061522145244383742
3151455224336292629
31541014764742353439
31572025924944393842
315103037085348424146
4002408644336292631
40067024124438323037
400117542304742363541
400168060485044383746

① TVR-Ex
② TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 500 mm
③ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1000 mm
④ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1500 mm


TVR-Ex, pneumatic, sound pressure level at differential pressure 150 Pa

NSqᵥ [l/s]qᵥ [m³/h]Air-regenerated noiseCase-radiated noise

LPA [dB(A)]

LPA1 [dB(A)]

LPA2 [dB(A)]

1252279362516<1516
125602164536302825
1251053784940343231
1251505405241343235
160351264130221922
1601003604739343128
1601756305042373432
1602509005344393637
200602164132242221
2001605764740343329
20028010085044403832
20040514585445393838
250903243830242222
2502458824740343235
25043015484842383737
25061522145244383742
3151455224336292629
31541014764742353439
31572025924944393842
315103037085348424146
4002408644336292631
40067024124438323037
400117542304742363541
400168060485044383746

① TVR-Ex
② TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 500 mm
③ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1000 mm
④ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1500 mm


Specification text

VAV terminal units for variable and constant air volume systems in potentially explosive atmospheres, suitable for supply or extract air, available in 6 nominal sizes. High control accuracy (even with upstream bend R = 1D). Ready-to-commission unit which consists of the mechanical parts, the electronic control components, and parts for equipotential bonding and for use in potentially explosive atmospheres. Each unit contains an averaging differential pressure sensor for volume flow rate measurement and a damper blade. Factory mounted control components complete with wiring and tubing. 
Differential pressure sensor with 3 mm measuring holes (resistant to dust and pollution) 
Spigot with lip seal, for circular connecting ducts to EN 1506 or EN 13180. 
Closed blade air leakage to EN 1751, class 4 (nominal sizes 125 and 160, class 3). 
Casing air leakage to EN 1751, class C.




Special features

  • ATEX mark and certification
  • ATEX equipment group II, approved for use in zones 1 and 2; electronic control also for zones 21 and 22
  • The volume flow rate can later be measured and adjusted on site; configuration is possible using personal computer software


Materials and surfaces

  • Casing and inner duct made of galvanised sheet steel
  • Control components made of die cast aluminium (pneumatic control: plastic)
  • Plastic bearings
  • Damper blade of stainless steel with thermoplastic elastomer seal TPE
  • Differential pressure sensor made of aluminium
  • P1: Inner duct powder-coated
  • A2: Inner duct in stainless steel



Construction

  • Galvanised sheet steel
  • P1: Inner duct powder-coated, silver grey (RAL 7001)
  • A2: Inner duct in stainless steel



Technical data

  • Nominal sizes: 125 to 400 mm
  • Volume flow rate range: 15 to 1680 l/s or 54 to 6048 m³/h
  • Volume flow rate control range: approx. 15 – 100% of the nominal volume flow rate
  • Maximum differential pressure: 1000 Pa



Attachments

Variable volume flow control with electronic controller to connect an external control signal; actual value signal can be integrated into the central BMS.

  • Supply voltage 24 V AC/DC (controller/differential pressure transducer)
  • Supply voltage 24 V AC/DC (actuator for attachment S1*)
  • Supply voltage 230 V AC (actuator for attachment TE*)
  • Signal voltages 0 – 10 V DC
  • The actual value signal relates to the nominal volume flow rate so that commissioning and subsequent adjustment are simplified
  • Volume flow rate control range: approx. 15 – 100% of the nominal volume flow rate
  • Actuator with adjustable running time, 7.5 – 120 s



Sizing data

  • qv ___________________________________[m³/h]
  • Δpst _________________________________[Pa]

Air-regenerated noise

  • LPA __________________________________[dB(A)]

Case-radiated noise

  • LPA __________________________________[dB(A)]






TVR-Ex with ATEX control component Universal
TVR-ExP1/125/S1F/V0/200 – 400 [m³/h]/NO
||||||||
12345678
1 Type
TVR-Ex
VAV terminal unit for use in potentially explosive atmospheres

2 Material
No entry: galvanised sheet steel
P1 Inner duct powder-coated, silver grey (RAL 7001)
A2 Inner duct in stainless steel

3 Nominal size [mm]
125, 160, 200, 250, 315, 400

4 Attachments (control components)

Electronic control
S1S ExReg controller and actuator
S1F ExReg controller and spring return actuator
S1X ExReg controller, actuator and auxiliary switch
S1Y ExReg controller, spring return actuator and auxiliary switch

5 Operating mode
V
Variable operation (adjustable setpoint value range)

6 Signal voltage range
For the actual and setpoint value signals
0 0 – 10 V DC
2 2 – 10 V DC

7 Operating values for factory setting
Volume flow rate [m³/h or l/s]
qᵥmin – qᵥmax

8 Damper blade position
Only with spring return actuators (S1F and S1Y)
NO Power off to open (Normally Open)
NC Power off to close (Normally Closed)

Order example: TVR-Ex-P1/125/S1F/V0/200-400[m³/h]/NO
TypeTVR-Ex
MaterialInner duct powder-coated, silver grey (RAL 7001)
Nominal size [mm]125
Attachments (control components)ExReg controller and spring return actuator
Operating modeVariable operation (adjustable setpoint value range)
Signal voltage range0 – 10 V DC
Operating values for factory setting200 – 400 [m³/h]
Damper blade positionPower off to open (Normally Open)



TVR-Ex with ATEX control component based on TCU3
TVR-ExP1/160/TEF/ECE0/M/200 – 400 [m3/h]/NO
|||||||||
123456789
1 Type
TVR-Ex
VAV terminal unit for use in potentially explosive atmospheres

2 Material
No entry: galvanised sheet steel
P1 Inner duct powder-coated, silver grey (RAL 7001)
A2 Inner duct in stainless steel

3 Nominal size [mm]
125, 160, 200, 250, 315, 400

4 Attachments (control components)

Electronic control (controller outside of the Ex zone)
TES TCU3 controller and actuator
TEF TCU3 controller and spring return actuator
TEX TCU3 controller, actuator and auxiliary switch
TEY TCU3 controller, spring return actuator and auxiliary switch

5 Equipment function
Single operation
SC Single controller – supply air (Supply Controller)
EC Single controller – extract air (Extract Controller)

6 External volume flow rate default setting
E0
Variable, signal voltage range 0 – 10 V DC
E2 Variable, signal voltage range 2 – 10 V DC
2P 2 switching steps (for one switch contact, by others)
3P 3 switching steps (for two switch contacts, by others)
F Constant value mode, one setpoint value (no external switch contact)

7 Expansion modules
Option 1: Power supply
No entry: 24 V AC/DC
T With EM-TRF for 230 V AC mains supply
U With EM-TRF-USV (including battery pack) for uninterruptible 230 V AC power supply (UPS)

Option 2: Digital communication interface
No entry: without digital communication interface
B With EM-BAC-MOD for BACnet MS/TP
M With EM-BAC-MOD for Modbus RTU
I With EM-IP for BACnet IP, Modbus IP and web server
R With EM-IP (including real time clock, RTC) for BACnet IP, Modbus IP and web server

8 Operating values for factory setting
Volume flow rate [m3/h or l/s]

Depends on external volume flow rate setting
E0: qᵥmin – qᵥmax
E2: qᵥmin – qᵥmax
2P: qᵥ1/qᵥ2
3P: qᵥ1/qᵥ2/qᵥ3
F: qᵥ1

9 Damper blade position
Only with spring return actuators (TEF and TEY)
NO Power off to open (Normally Open)
NC Power off to close (Normally Closed) 


Order example: TVR-Ex-P1/160/TEF/EC-E0/M/200-400[m3/h]/NO

TypeTVR-Ex
MaterialInner duct powder-coated, silver grey (RAL 7001)
Nominal size [mm]160
Attachments (control components)TCU3 controller installed outside of the Ex zone (away from the terminal unit)
ActuatorSpring return actuator
Equipment functionSingle controller – extract air (Extract Controller)
External volume flow rate settingVariable, signal voltage range 0 – 10 V DC
Expansion modules24 V AC/DC power supply, EM-BAC-MOD for Modbus RTU communication interface
Operating values for factory setting200 – 400 [m3/h]
Damper blade positionPower off to open (Normally Open)



TVR-Ex with pneumatic attachments
TVR-ExP1/125/PG5/V/200 – 400 [m³/h]/NO
| | | | | | |
1 2 3 4 5 6 7
1 Type
TVR-Ex
VAV terminal unit for use in potentially explosive atmospheres

2 Material
No entry: galvanised sheet steel
P1 Inner duct powder-coated, silver grey (RAL 7001)
A2 Inner duct in stainless steel

3 Nominal size [mm]
125, 160, 200, 250, 315, 400

4 Attachments (control components)

Pneumatic control
PG5 Volume flow controller with actuator
PJ5 Pressure and volume flow cascade (±20 Pa)
PL5 Pressure and volume flow cascade (±50 Pa)

5 Operating mode
V
Variable operation (adjustable setpoint value range)

6 Operating values for factory setting
Volume flow rate [m3/h or l/s]

For attachment PG5
Volume flow rate qᵥmin – qᵥmax

For attachments PJ5 and PL5
Pressure and volume flow cascade qᵥmin – qᵥmax / Δpset

7 Damper blade position
Pneumatic actuators
NO Pressure off to open (Normally Open)
NC Pressure off to close (Normally Closed)


Order example: TVR-Ex-P1/125/PG5/V/200-400[m³/h]/NO

TypeTVR-Ex
MaterialInner duct powder-coated, silver grey (RAL 7001)
Nominal size [mm]125
Attachments (control components)Volume flow controller with actuator
Operating modeVariable operation (adjustable setpoint value range)
Operating values for factory setting200 – 400 [m3/h]
Damper blade positionPower off to open (Normally Open)

Variants, Attachments, Dimensions and weight

  • Varianten
  • DIMENSIONS AND WEIGHT

TVR-Ex 

TVR-Ex

NS

ØD

B3

H3

C
125124372221129
160159372221111
200199463311182
250249463311157
315314627461289
400399627461246
① TVR-Ex
② TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 500 mm
③ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1000 mm
④ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1500 mm


TVR-Ex

NS

TVR-Ex/.../TEx

TVR-Ex/.../Pxx

kg
12517.515.5
16017.515.5
2001917
2501917
3152321
4002321
① TVR-Ex with electronic control
② TVR-Ex with pneumatic control

Installation details

  • INSTALLATION DETAILS

Installation and commissioning

  • Connections for equipotential bonding: Suitable cables must be connected by others

Electronic control

  • Any installation orientation
  • Zero point correction required

Pneumatic control

  • Installation orientation must be as shown on the sticker

Upstream conditions
The volume flow rate accuracy Δqv applies to a straight upstream section of the duct. Bends, junctions or a narrowing or widening of the duct cause turbulence that may affect measurement. Duct connections, e.g. branches off the main duct, must comply with EN 1505. Some installation situations require straight duct sections upstream.


Space required for commissioning and maintenance
Sufficient space must be kept clear near any attachments to allow for commissioning and maintenance. It may be necessary to provide sufficiently sized inspection access openings.


Space required

NS

125600220300
160600220300
200600310300
250600310300
315600460300
400600460300

,

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product information

certificates

operation manuals

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Tel.: +91 (0) 22 6775-1600 | Fax: +91 (0) 226775-1613

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Contact

Thank you for your message!

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +91 (0) 22 6775-1600 | Fax: +91 (0) 226775-1613