Oventrop OV-DMC 2 User manual

Valves, controls + systems

Operating instructions

Flow meter

“OV-DMC 2”

Subject to modification without notice. Oventrop does not accept liability for the accuracy

of the OV-DMC flow meter readings.

Contents

Page

Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Characteristic lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Content of measuring case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Component connection diagram/Battery case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Main menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

System-Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Measurement-Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Valve-Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Temperature measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Temperature input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Balanced pressure method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Data Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Kv-value-method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Computer-method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Permanent measurement of “Cocon”/“Cocon 4” valves and metering stations . . . . . . . . . . . . . . . . . . . . . . .19

Permanent measurement of differential pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

OV-Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Storage and printing of valve data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

xample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Locking Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Functional messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

rror messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

General information

General information:

The flow meter “OV-DMC 2” was specially designed for flow measurements and the hydronic balancing of

heating and cooling systems. In practice, operation off the line is guaranteed by using rechargeable batte ries.

To facilitate handling, null balance is automated. This process of changeover to the measuring position of the

measuring head is taken over by an electric motor which is automatically triggered by the flow meter during

each measurement. This step largely protects the measuring head against any damage. To protect the mea-

suring head from contamination, the inlet and outlet nipple are provided with integrated strainer inserts. Nip-

ples for replacement are supplied with each flow-meter (see part 17, page 7) and can be replaced by using a

standard spanner (spanner size 17 mm). Spare part number of the nipples for subsequent ordering:

106 91 86.

Attention:  Before the measuring hoses are connected to the double regulating and

commissioning valve, the flow meter has to be connected to the measuring head and

has to be switched on.

 Provide for free water flow through measuring hoses. Clean or replace strainer inserts

of the measuring hose in case of heavy pollution.

For further details regarding function sequences see page 12 and onwards.

The logical structure and the consequent query on the display offer a good condition to carry out hydronic

balancing of existing installations without calculation. Presetting of a double regulating and commissioning

valve can be calculated by using the balanced pressure method, computer method or OV balance method

after having entered the valve size and the nominal flow rate. The presetting values of individual double regu-

lating and commissioning valves can be calculated on the basis of the characteristic lines of all Oventrop

double regulating and commissioning valves as well as those of some competitors which are stored in the

flow meter (see list on next page).

When using the “OV-DMC 2” for the regulation of valves which are not produced by Oventrop, the corres -

ponding kv-value has to be entered before the first measurement. To do so, the kv-value method is chosen in

the menu "Measurement-Setup”. Any data obtained during measurement is stored in the “OV-DMC 2” and

can be processed via a PC under Windows which guarantees the filing of any data obtained during hydronic

balancing. Moreover, temperature can be measured by using the flow meter. To do so, the sensor is

introduced into the pressure test points at the double regulating and commissioning valve “Hydrocontrol”. As

for the double regulating and commissioning valves “Hycocon”, the temperature must be seized at the pipe-

work or the valve body.

Characteristic lines

Characteristic lines:

Characteristic lines of the Oventrop valves:

Indicated display

Double regulating and commissioning valves “Hycocon V, VTZ, VPZ” DN 15 to DN 40 Hycocon V

Regulating valves “Hycocon T, TZ” DN 15 to DN 25 Hycocon T

Regulating valves “Hycocon TM, HTZ” DN 15 to DN 40 Hycocon TM

Regulating valves “Hycocon TM, HTZ, ” Bronze kvs 5.0 DN 20 Hyco.TM RG

Regulating valves “Aquastrom C” DN 15 to DN 32 AquastromC

Double regulating and commissioning valves “Hydrocontrol R, VTR, VPR” DN 10 to DN 65 Hydroc. R

Double regulating and commissioning valves “Hydrocontrol G, VGC” DN 65 to DN 300 Hydroc. G

Double regulating and commissioning valves “Hydrocontrol F, VFC” DN 20 to DN 400 Hydroc. F

Double regulating and commissioning valves “Hydrocontrol FR, VFR” DN 50 to DN 200 Hydroc. FR

Double regulating and commissioning valves “Hydrocontrol FS, VFN” DN 65 to DN 300 Hydroc. FS

Double regulating and commissioning valves “G-86” DN 10 to DN 65 (Swedish market) G- 86

Double regulating and commissioning valves “RF-93” DN 20 to DN 300 (Swedish market) RF- 93

Regulating valve for chilled ceiling installations “Cocon 2TZ” kvs 0.45 DN 15 Coconkv045

Regulating valve for chilled ceiling installations “Cocon 2TZ” kvs 1.0 DN 15 Coconkv1.0

Regulating valve for chilled ceiling installations “Cocon 2TZ” kvs 1.8 DN 15 Coconkv1.8

Regulating valve for chilled ceiling installations “Cocon 2TZ” kvs 4.5 DN 20 Coconkv4.5

Four-port regulating valve “Cocon 4 TZ ” kvs 0.45 DN 15 Cocon4-045

Four-port regulating valve “Cocon 4TZ” kvs 1.0 DN 15 Cocon4-1.0

Four-port regulating valve “Cocon 4 TZ” kvs 1.8 DN 15 Cocon4-1.8

Brass metering station LF kvs 0.55 DN 15 met.st.LF

Brass metering station MF kvs 1.2 DN 15 met.st.MF

Brass metering station DN 15 to DN 50 /

Flanged stainless steel metering station DN 65 to DN 900 met.st.

Flanged cast iron metering station DN 65 to DN 300 met.st.CI

Characteristic lines of other valves:

Tour & Andersson (stored values taken from the catalogue 1999)

Flanged valve type “STAF” DN 20 to DN 300 STAF

Flanged valve type “STAF-SG” DN 20 to DN 300 STAF-SG

Flanged valve type “STAF-R” DN 65 to DN 150 STAF-R

Groove end valve type “STAG” DN 65 to DN 300 STAG

Female threaded valve type “STA” DN 15 to DN 50 STA

Female threaded valve type “STAD” DN 10 to DN 50 STAD

Male threaded valve type “STADA” DN 10 to DN 50 STADA

Female threaded valve type “STA-DR” DN 15 to DN 25 STA-DR

Crane (stored values taken from the catalogue 2000):

Double regulating and commissioning valves:

Fig.-No. D 930: DN 10 to DN 50 D930

Fig.-No. DM 930: DN 20 to DN 300 DM930

Metering stations/combinations metering stations/valves:

Fig.-No. D 901/D 941/D 931: DN 15 to DN 50

D901/D941/D931

Fig.-No. D 902/D 942: DN 15 D902/D942

Fig.-No. D 932: DN 15 D932

Fig.-No. D 933: DN 15 D933

Fig.-No. D 934: DN 15 D934

Fig.-No. DM 900/DM 940: DN 20 to DN 300 DM900/DM940

Fig.-No. DM 950: DN 50 to DN 300 DM950

Characteristic lines

Hattersley (stored values taken from the catalogue 2000):

Double regulating and commissioning valves:

Fig.-No. M737: DN 50 to DN 300 M737

Fig.-No. 1700: DN 15 to DN 50 1700

Fig.-No. 1700L: DN 15 1700L

Fig.-No. 1710: DN 15 to DN 50 1710

Metering stations/combinations metering stations/valves:

Fig.-No. M2733: DN 50 to DN 300 M2733

Fig.-No. M2943G: DN 350 to DN 600 M2943G

Fig.-No. M2944G: DN 350 to DN 600 M2944G

Fig.-No. M2963G: DN 350 to DN 600 M2963G

Fig.-No. M2964G: DN 350 to DN 600 M2964G

Fig.-No. M2973G: DN 350 to DN 600 M2973G

Fig.-No. M2974G: DN 350 to DN 600 M2974G

Fig.-No. 2473LC: DN 15 2473LC

Fig.-No. 2473L: DN 15 2473L

Fig.-No. 2473MC: DN 15 2473MC

Fig.-No. 2473M: DN 15 2432M

Fig.-No. 2432C: DN 15 2432C

Fig.-No. 2432: DN 15 to DN 50 2432

Fig.-No. 5200: DN 15 to DN 50 5200

Fig.-No. M7733CSDR: DN 65 to DN 200 M7733CSDR

Content of measuring case

11. Measuring case

12. Flow meter “OV-DMC 2” with shoulder strap

13. Measuring head with connection cable, connection nipple for measuring hose and two rubber rings

protecting the measuring head against impact

14. Power pack with connecting cable

15. Temperature sensor with connecting cable 1 m long

16. Measuring hose, red with quick couplings 0.5 m long

17. Measuring hose, blue with quick couplings 0.5 m long

18. Allen key 3 mm with black handle

19. Allen key 4 mm with black handle

10. Allen key 8 mm with black handle

11. PC connection cable to transmit stored data of the “OV-DMC 2” to the USB interface

12. USB-Stick for data transmission

13. 2 measuring adapters with connection thread R 3⁄4for quick-coupling technic

Suitable for “Hydrocontrol” as well and the fill and drain tool 106 17 91 of “Hycocon”

14. Measuring adapter with connection thread R 3⁄4for double regulating and commissioning valves

“Hydrocontrol” with needle technic

15. Set of measuring needles 106 91 99 for measuring technic “classic” of double regulating and

commissioning valves, e.g.“Hydrocontrol”

16. Operating key 106 01 85 for older double regulating and commissioning valves “Hydrocontrol”

17. Two connection nipples 106 91 86 for replacement at measuring head

18. Set of measuring needles 106 17 99 for measuring technic “eco” of double regulating and commissioning

valves, e.g.“Hycocon”

19. 2 fill and drain tools 106 17 91 for measuring technic “eco” of double regulating and commissioning

valves, e.g.“Hycocon”

20. Measuring device 114 50 99 for regulating valves “Cocon” with measuring technic “eco”

Operating instructions

12. Flow meter “OV-DMC 2” with shoulder strap

13. Measuring head with connection cable, connection nipples for measuring hoses and two rubber rings protecting

the measuring head against impact

14. Power pack with connecting cable

15. Temperature sensor with connecting cable 1.0 m long

11. PC connecting cable to transmit stored data of the “OV-DMC 2” to the USB interface

Component connection diagram/Battery case

Lockable plug

red

positioning

point

Sliding sleeve

Guide

Lockable plug-in connection between

flow meter and measuring head:

The plug is released by pushing back

the sliding sleeve!

The red positioning point indicates the

position of the guide when introducing

the plug into the guiding groove of the

jack bush on the lower side of the flow

meter.

Technical data

Measuring range: Measuring range - differential pressure: -0.05 kPa to 200 kPa

Max. static excess pressure: 2000 kPa

Measuring range – temperature: -20°C to +120°C

Resolution: Differential pressure: 0.01 kPa

Flow: 0.0001 l/s

Temperature: 0.1°C

Accuracy: Differential pressure: up to 10 kPa ± 0.1 kPa

10 to 200 kPa 1% of measured value

Flow: 0.01 l/s

Temperature ± 1°C

Ambient temperature: Working temperature: 0°C to 40°C

Storage: -20°C to +60°C

Attention: In case of risk of frost, no water may remain in the

measuring head!

In this case, the measuring head and the measuring hoses have to

be drained completely.

Humidity: Max. relative humidity of 90% non-condensing

Protection class: Body IP52

Keyboard IP54

Dimensions/weight: Flow meter: 160 x 63 x 40 mm, weight 470 g

Measuring head: 130 x 70 x 70 mm, weight 1240 g

Display: LCD display with backlighting

Power supply: 4 rechargeable NiMh batteries

or by using enclosed power pack 230 V AC 50/60 Hz

or by using 4 commercial Mignon batteries 1.5 V

Attention: In case of battery operation, the power pack must not be

connected!

Interface: USB

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