TEMPERATURE MEASUREMENT AND CONTROL EQUIPMENT

The digital thermometer DT 5 is designed for the use in wine and other food industry.

Its main features are:• easy application • design suitable for use in wet places and aggressive atmosphere (IP 65)• all metal parts made of stainless steel• easy mounting in tanks

TECHNICAL DATAOperating range -5 °C to +50 °C (23 °F to 122 °F)Resolution 0,1 °C, (0,1 °F)Accuracy ± 0,5 °C, Sampling every 15 s Battery AA (LR-6) 1,5 VExpected battery life minimum 2 yearsInstallation of the thermometer in well 220 mm long.

DIGITAL THERMOMETER DT 5

The temperature controller SPR8 is used for measuring and regulating the temperature.

Its main features are: • possibility to control two valves (cooling and heating) • easy application• setting of parameters on three levels• access protected with passwords to prevent accidental modifications• possibility to connect up to 99 controllers into a network (RS232/SPR8) • possibility of connection with a computer PC (RS232/SPR8)• design suitable for use in wet places and aggressive atmosphere (IP 65)• all metal parts made of stainless steel• simple installation and enlargement of the system

TECHNICAL DATAOperating range -9.9°C to 99.9°CResolution 0,1 °CAccuracy ±0.5°CConsumption 2W (without loads)Supply voltage 24 V ACOutput for heating max. 2A / 24V AC Output for cooling max. 2A / 24V AC Connection cable 4 mInstallation of the controller in well 220 mm long.

TEMPERATURE CONTROLLER SPR8

SCADA (Supervisory Control And Data Acquisition) is common name for the systems designed for computer monitoring and control of different technological processes. SCADA systems are special software tools designed for the tasks of capturing and processing production process data, and deciding based on these data.

SCADA - SPR8 System supports centralised computer aided operation of SPR8 control-lers from a common workpost. Up to 99 temperature controllers SPR8 can be linked in a network and controlled in this way. This clear and easy to use program is an efficient solution for wine makers who wish to closely monitor and control the process of the transition of grapes into wine.

SCADA - SPR8 provides the user with:• continuous current information on the actual and the desired temperature in each

vessel• means to easily set and modify controller parameters

(operation mode, temperature hysteresis settings, dead zone,...)• means to operate the controller according to a preset time schedule (over extended

time periods)• clear graphical display of data

archiving of the overall temperature history for a particular vessel (data file can be opened in the Excel application)

SCADA SySTEM fOR THE SPR8 TEMPERATURE CONTROLLER

The following equipment is required to set up the system:• PC (personal computer)• RS232/SPR8 converter• SPR8 temperature controller (version 3.3 or newer)

The main program window:

The window displays all the SPR’s linked in the system. Each SPR is displayed as a small square. A colour line above the square informs the user on the temperature controller status.

The Load Background Picture function key allows you to load the image of the vessels in your cellar in the window and to mark the corresponding SPR’s in the image.

The View Log/Chart function offers the user two options:• Log: display of data in the table form (like in the figure above),

including all the recorded events and any errors in the system operation

• Chart: display of the recorded temperature history of a selected SPR in the form of a diagram

The photographs are symbolic • We reserve the right to make technical and other changes without previous notice • TEMP-2005/11-UK

ŠKRLJ d.o.o. Dunajska cesta 196, SI-1000 Ljubljana, Slovenija • ŠKRLJ d.o.o. Batuje 90, SI-5262 Črniče, Slovenija • tel.: 00386 5 36 43 500 • fax: 00386 5 36 43 525 • www.sk-group.biz • sk@sk-group.biz

In the process of vinification, temperature monitoring and control are of a vital importance. Namely, the temperature affects virtually all the biologi-cal, physical and chemical processes in grapes and must, determining the final character of wine.

A cooling/heating system in place allows the user to actively intervene in processes taking place in the vessel in the course of vinification, to continuously adjust and steer these processes.

A range of cooling/heating systems are available; electronic temperature monitoring and control equipment allows a high degree of their automa-tion.

Temperature monitoring and control allows us to govern:• the beginning of alcoholic fermentation (initiation temperature);• the intensity of alcoholic fermentation;• the stabilisation of wine;• the temperature of stored wine;• etc.

TEMPERATURE MONITORING AND CONTROL EQUIPMENT

A double jacket is a component of the vessel envelope, designed to allow the control of temperature in the vessel by adjusting the through-flow of cooling/heating medium. Corrugated external sheet and the vessel envelope form the enclosure for the flow of the cool-ing/heating medium.

The cooling/heating medium flow rate can be controlled by different valves, operated manually or automatically by the SPR8 temperature controller (see Table 3).

Technical characteristics and specifications:• minimum vessel envelope thickness in the region of the double

jacket: 2.0 mm• allowable pressure in the double jacket: max. 6 bar• allowable operating pressure: max. 3 bar• adequate double jacket inlet/outlet pressure differential, consider-

ing the type of cooling medium, double jacket area and specified flow rate;

• cooling medium: water, glycol• connection fittings (for the medium) at the double jacket inlet and

outlet are 3”, external thread

In determining the size and shape of the double jacket, the following factors should be observed: • the type of the vessel;• the vessel dimensions (diameter, capacity);• the desired position of the cooling/heating medium connections;• the desired system design;• the recommended double jacket area (see Table 2).

DOUBLE JACKET

COOLING/HEATING EQUIPMENT

Type V1:- installed above the

vessel manway;- enclosing the entire

vessel circumference;- inlet and outlet con-

nections located at the vessel back

Type V2:- with a lockout for the

vessel manway;- approx. 3/4 of the

vessel circumference;- inlet and outlet con-

nections located at the vessel back

Type V3:- enclosing only one

vessel side (normally the back side)

Cooling and heating equipment: Temperature measurement and control equipment:

• double jacket for the mounting on vessels;• plate heat exchangers (cooling plates) for the installation in vessels;• sprinkling tubes for external cooling;• double bottoms with heaters

• DT5 digital thermometer;• SPR8 temperature controller;• software: SCADA-SPR8 system for centralised computer operation

of SPR8 temperature controllers in a network

Double jacket types:

A plate heat exchanger consists of two welded sheet plates, corrugated outwards to form an internal cavity for the cooling/heating medium. A specific profile provides for a uniform flow pattern across the entire plate area.

Plate heat exchangers are designed for installation inside the vessel. They fit into vertical, horizontal, rectangular or oval vessels. Since the plate is in direct contact with the liquid in the vessel, the cooling/heating medium has a direct effect on the liquid. This provides for a high cooling/heating efficiency and thereby overall system efficiency.

The cooling/heating medium flow rate can be controlled by different valves, operated manually or automatically by the SPR8 temperature controller (see Table 3).

Characteristics and specifications:• material: stainless steel sheet EN 1.4301;• surface and welds electropolished;• test pressure: max. 4 bar• cooling plate operating pressure: max. 2.5 bar• connection fittings (for the medium) at the double jacket inlet and outlet:, 1”, external

thread;• cooling medium: water, glycol

PLATE HEAT EXCHANGERS

Table 1: Standard dimensions of plate heat exchangers

Type Denomination D x L Surfacemm m²

HR_500 plate heat exchanger P50 320 x 500 0,3HR_750 plate heat exchanger P75 320 x 750 0,45HR_1000 plate heat exchanger P100 320 x 1000 0,6HR_1250 plate heat exchanger P125 320 x 1250 0,8HR_1500 plate heat exchanger P150 320 x 1500 0,95HR_2000 plate heat exchanger P200 320 x 2000 1,2HR_2500 plate heat exchanger P250 320 x 2500 1,6HR_3000 plate heat exchanger P300 320 x 3000 1,8

Installation:

a) fixed mounting of the plate heat exchanger into the vessel:

The heat exchanger connection pipes are welded on the vessel lid external surface. Normally, the plate heat exchanger is mounted with the top edge of the plate located approx. 30 mm below the lid weld. On customer’s specification, it may be installed lower or horizontally.

In its bottom section, the plate heat exchanger is supported by a special bracket, which ensures its stability during the vessel filling, emptying or mixing of the contents.

b) mounting to the connections inside the vessel:

A plate heat exchanger may also be installed in the vessel in service. For this purpose, connection fittings (1”, external thread) are required on the vessel lid, and holland nuts to couple the connection pipes to the plate heat exchanger.

In specifying the size and number of plate heat exchangers, observe the following factors:• the vessel dimensions (diameter, capacity);• the requested cooling medium flow rate;• the recommended plate heat exchanger area (Table 2).

must volume

must temp. 18°Cenvironment temp. 26°Cglycol 10°C

must temp. 18°Cenvironment temp. 26°Cglycol 7°C

must temp. 18°Cenvironment temp. 22°Cglycol 7°C

plate heat exchanger double jacket plate heat exchanger double jacket plate heat exchanger double jacket

l m21000 0,8 1,1 0,4 0,6 0,2 0,32000 1,0 1,4 0,8 1,1 0,5 0,73000 1,5 2,1 1,0 1,4 0,8 1,15000 2,2 3,0 1,5 2,1 1,1 1,67000 2,8 4,0 2,0 2,8 1,5 2,110000 3,8 5,3 2,6 3,6 2,0 2,820000 6,4 9,0 4,8 6,7 3,8 5,3

All the quoted values shall be considered minimum indicative values. The actual values shall be specified by the designer depending on the system construction, cooling medium flow rate, environment air circulation pattern etc.

Table 2: Recommended fermentation control plate heat exchanger / double jacket area

A double bottom is a special design of the vessel bottom with a water reservoir and electric heating elements. Water is filled through an inlet funnel.

The heating function may be controlled either manually, with a thermostat in the heater (on/off operation of the heating elements), or automated, by means of a SPR8 tempera-ture controller.

Connection:heaters - SPR8 (without controller)

Allows the control of the heating function (automatic on/off switching of the heating elements) through a SPR8 temperature controller.For vessels/vinificators fitted with a SPR8 temperature controller, connection module and heating elements.

Connection:heaters - SPR8 (to an existing controller)

Allows the control of the heating function (automatic on/off switching of the heating elements) through a SPR8 temperature controller.For vessels/vinificators fitted with a temperature controller (including SPR8) and heating elements.

Characteristics and specifications:• the diameter of the double bottom shall be smaller than the vessel diameter (500 - 800

mm, depending on the design and layout of the vessel legs);• installation possible in vessels provided with the RA type bottom (inclined even bot-

tom);• the double bottom is fitted with the connections for the heater. The number of

heating elements depends on the vessel capacity. Normally, one heating element is required per 3000 - 4000 litres of vessel capacity;

• no overpressure is allowed inside the double bottom.

Heating element 3 kW for installation in a double bottom:• tube heater length: 750 mm• power supply: AC 230-240 V 50/60Hz, 3000 W, 14 A• double bottom water temperature adjustment thermostat;• connection: 1 1/4", external thread.

DOUBLE BOTTOM WITH HEATERS

A sprinkling tube is designed for the cooling of the vessel on outside. The ring is fitted with welded projections for the mounting on the vessel lid external brim. On the inside perimeter, the tube is fitted with pin holes to direct cooling medium spray against the vessel jacket.

Characteristics and specifications:• material: tube ½” of stainless steel EN 1.4301;• connection for the medium: 1”, external thread;• cooling medium: water;• connection: connect to an existing cold water supply.

SPRINKLING TUBE

TABLE 3: Accessories

motorised ball valvetype EMV 110 800/530-3FIRŠT

• inline ball valve, full cross-section• fluid temperature: 0ºC … +1300 C max.• possibility of parallel connecting of more valves with cor-

responding accessories• actuator protection class IP55• connection DN20, internal thread 3/4”• fluids: water, glycol, non-aggressive media• valve body made of nickel plated brass• valve stem gasket VITON• valve ball gasket PTFE

motorised ball valve type EMV 110 820/530HL-3FIRŠT

• inline ball valve, full cross-section• fluid temperature: -10ºC … +100ºC max.• possibility of parallel connecting of more valves with cor-

responding accessories• actuator protection class IP55• connection DN20, internal thread 3/4”• fluids: water, glycol, non-aggressive media• valve body made of nickel plated brass• valve stem gasket VITON• valve ball gasket PTFE

valve solenoidtype M23E20coil: IM21FFANTINI COSMI

• servo-assisted membrane actuator• fluid temperature: -10ºC …+90ºC max.• internal thread 3/4”• fluids: water, glycol, non-aggressive media• valve body made of brass• gaskets in NBR (BUNAN)• minimum differential pressure: 0,1 bar

Adapter

SP5/2type 37HSP5

allows connection of up to 5 motorised or 2 solenoid valves and SPR8 temperature controllers.Option: pump operation according to the valve status

SP10/4type 37HSP10

allows connection of up to 10 motorised or 4 solenoid valves and SPR8 temperature controllers.Option: pump operation according to the valve status

SP20/8type 37HSP20

allows connection of up to 20 motorised or 8 solenoid valves and SPR8 temperature controllers.Option: pump operation according to the valve status

SP25/10type 37HSP25

allows connection of up to 25 motorised or 10 solenoid valves and SPR8 temperature controllers.Option: pump operation according to the valve status

connecting moduletype HSE01

For connecting the temperature regulating elements

Functions of connecting module HSE01 are as follows:• connectinon and loading the temperature controller SPR8• connectinon and loading of motorised ball valve or solenoid

valve• cooling system pump operating control regarding the state

of the valve• connection with computer system for supervising and regu-

lating the temperature controller SPR8