REMOTE TYPE HEAT/COOL ENERGY METER

REMOTE TYPE

HEAT/COOL ENERGY METER

APPLICATIONS

•

Combination Heat/Cool Systems

•

Heating Only Systems

•

Cooling Only Systems

•

Solar Systems

•

Geothermal Systems

•

Efficiency Measuring/Verification

•

Heat Reclaimers

FEATURES

•

Automatic Heat/Cool Changeover

•

Battery or 24-Volt Powered

•

Prog. Pulse & 4-20mA Output

•

Liquid Crystal Display

•

Data Storage

PRODUCT OVERVIEW

ISTEC’s Energy Meter measures the total energy

used or transferred in a liquid system. BTUs are

calculated by multiplying the system temperature

difference by the flow volume.

The SCYLAR 5202S Energy Meter is an ideal

choice for applications requiring a simple,

compact and cost effective unit.

SCYLAR SERIES – Model 5202S

DIMENSIONS

L

B

H

5.9” (128mm)

2.1” (143mm)

3.9” (85mm)

TECHNICAL SPECIFICATIONS

Temperature

41ºF - 302ºF

Range

(5ºC - 150ºC)

∆

T

-4ºF - 374ºF

Range

Ambient

32ºF – 131ºF

Conditions

(0ºC - 55ºC)

LCD

8-Digits

Sensors

Power Supply

Output

Platinum RTD

Battery or 24VAC

MBus, Pulse, 4-20ma

HOW TO SELECT A SCYLAR ENERGY METERING SYSTEM

11-Year

Battery

(standard)

IMPORTANT

Verify maximum system temperature and pressure as well as

flow volume and pipe size before selecting flow meter. See 1700

or 1800 Series Engineering Manual for details. Flow Meter must

Calculating Unit

5202S

11-Year Battery

16-Year

Lithium

Battery

5016S

24VAC

Power

Adapter

5010S

For

Pipe Sizes

to 1"

5601S

For

Pipe Sizes

1-1/4"-3"

5602S

For

Pipe Sizes

4"+

5603S

Power

Supply

(choose 1)

Sensor Set

(choose 1)

Immersion

Well Set

(choose 1)

Options

&

Accessories

Flow Meter

with Pulse

(choose 1)

Use with

5601S

5601S.6

Use with

5602S

5702S

Use with

5603S

5703S

2-Pulse

Output

Module

5105S

2-Analog

Module

4-20mA

5014S

M-Bus

Module

5012S

1

ENERGY METER

ENGINEERING MANUAL

SCYLAR SERIES

MODEL 5202S

FLOW MEASUREMENT & CONTROL SOLUTIONS

ISTEC Corporation

5 Park Lake Road,

Unit 6, Sparta, NJ 07871

Tel: +1-973-383-9888

Fax:

+1-973-383-9088

www.istec-corp.com

[email protected]

cold hot 5 2/3 2/3 4 5

SYSTEM OVERVIEW

ISTEC BTU Meters measure energy usage by

multiplying flow

volume and temperature difference.

BTUs = Flow x

∆

T

As the water (or other liquid) passes through the

system piping, the flowmeter’s turbine rotates and

sends impulses to the electronic calculating unit. The

sensors of the electronic calculating unit measure the

supply and return water temperature.

Flow volume

and

∆

T are used to calculate BTU's which are

displayed on a non-resettable LCD.

C OMPONENT DESCRIPTION

All ISTEC

Energy Meter Systems consists of the following components:

1) Electronic Calculating Unit (Model

5202S) – Solid State circuitry for accurate and reliable operation with

automatic compensation for water density.

Non-resettable LCD indicates flow, temperatures and BTUs.

2) Temperature Sensors – Platinum RTDs for fast response and high accuracy. Sensors are available in

lengths of 1½

"/40mm, 3½"/90mm and 5¾"/145mm.

3) Sensor Wells

– Wells are available in three sizes: 1½"/40mm, 4"/100mm and 6"/150mm.

4) Flowmeter

– Industrial grade multi-wing turbine type with pulse output. Available in ½" (15mm) through

6" (150mm) sizes. Sizes up to 1½" (40mm) have union connections, 2" (50mm) and larger have ANSI

150-lb flanges.

5) Stop Valves

– The flowmeter should always be installed with a stop valve on each side for easier servicing.

TECHNICAL SPECIFICATIONS

TEMPERATURE RANGE

∆T RANGE

ENVIRONMENTAL PROTECTION

CLASS LCD

SENSORS

POWER SUPPLY

and OUTPUT

23°F - 356°F (-5°C - 180°C)

0.225°F – 333°F (0.125K – 185K)

41°F - 302°F (5°C – 150°C)

IP54

8-DIGITS

PLATINUM; PT100

or PT 500

11 OR 16-YEAR BATTERY or 24VAC

M-BUS, ANALOG (4-20mA) or

PROGRAMMABLE PULSE OUTPUTS.

1

3

DIMENSIONS

Overall length

L

5.9"

Width of calculator

B

3.9"

Height

H

2.1"

1) District heating/boiler application

2)

2-Pipe Combined heating/cooling application

or

W.S. Heat Pump

3) Condenser or Chilled water application

BTU METERING SYSTEM SPECIFICATION:

SCYLAR Series Model 5202S

AS MANUFACTURED BY ISTEC CORPORATION

5 PARK LAKE ROAD

, UNIT 6, SPARTA, NJ 07871 USA

The contractor shall furnish and install as shown on the plans an electronic BTU Metering System.

The system shall be designed and

programmed exclusively for energy

(BTU) metering. It shall be factory assembled, calibrated and tested, incorporating the

following features:

ELECTRONIC CALCULATING UNIT

The calculator contains all the necessary circuits for recording the flow rate and temperature as well as for calculating, logging and

displaying the data. The calculator can be remotelly mounted from the flow meter. The calculator can be conveniently read from a

single line 8-digit display with units and symbols. A push-button provides user-friendly control of the various display loops. All

failures and faults are recorded automatically and shown on the LC display. To protect the reading data, all the relevant data are

saved in a non-volatile memory (EEPROM). This memory saves the measured values, device parameters and types of error at

regular intervals.

POWER SOURCE

The Electronic Calculating Unit shall be powered by an integral

11-year battery. An optional 16-year battery or 24 volt, 60 Hz

power adapter shall be available.

SENSORS

Temperature sensors shall be the Platinum RTD

PT 100 or PT 500 type to provide high accuracy, stability and long term reliability.

They shall be supplied in matched pairs. The sensor probe shall be available in lengths of; 1½

"/40mm, 3½"/90mm and

5¾

"/145mm to accommodate different pipe sizes. They shall be designed to fit tightly into immersion wells that are inserted into

the water flow.

SENSOR WELLS

Sensor Wells shall be 1½

"/40mm long x ⅜" NPT for pipe sizes up to 1"/25mm and 4"/100mm long x ½" NPT for pipe sizes

1¼

"/32mm to 3"/80mm. For pipe sizes 4"/100mm and above a 6"/150mm long x ½" NPT well shall be available. They shall

incorporate a locking screw to secure the sensor

.

OUTPUT

The Electronic Calculating Unit shall provide

optional open collector, M-Bus or Analog (4-20mA) output modules.

FLOWMETER (see I

STEC 1700 or 1800 Series Flowmeter Engineering Manual for complete data)

A separate Flowmeter shall be utilized so various temperatures, pressures and flow rates can be accommodated. It shall be the

multi-wing turbine type, ISTEC Model _________. It shall have a line size of ______ inch(s) (________mm). The body shall be

constructed of brass/cast iron. The unit shall have a hermetically sealed mechanical counter, which shall be non-resettable. It shall be

constructed so that the flow insert assembly and counter can be replaced without removing the meter body. The Flowmeter shall

have an accuracy of ±1.5% at_______ gpm (________ lph). It shall have a continuous flow rating of________ gpm (________

m3ph). The peak flow, which the meter can not be subjected to for more than one hour per day, shall be______ gpm (_________

m3ph). The Flowmeter shall provide a “pulse” type output of 1 contact closure for every 1/10/100 gallon(s) of flow (metric counters

provide 1 pulse for every 1/10/100 liter(s) of flow).

DATA LOGGING

ISTEC CORPORATION 1700 Series Water Meters

5 Park Lake Road, Unit 6 • _{Sparta, NJ 07871 USA} Rev. B

Tel 973-383-9888 • _{Fax 973-383-9088} •_{www.istec-corp.com Page 2 of 5}

ISTEC’s 1700 Series Single-Jet Water Meter in 1/2" & 3/4"

Model Number

1700

1702

1710

1712

Pipe Size

1/2"

1/2"

3/4"

3/4"

Min Flow Rate (gpm)

0.13

0.13

0.22

0.22

Continuous Flow Rate (gpm)

6.6

6.6

11

11

Max Flow Rate (gpm)

13

13

20

20

Max Operation Temperature (°F)

200

200

200

200

Maximum Operation Pressure (psi)

150

150

150

150

Design

Single Jet

Mounting Connections

NPT

Mounting Position

Any

Pulse (gal/pulse)

NO

1

NO

1

Weight (lbs)

1.1

1.1

1.4

1.4

Dimensions

1700

1702

1710

1712

Pipe Size

1/2"

1/2"

3/4"

3/4"

A

3/4"

3/4"

7/8"

7/8"

B

2-3/4"

2-3/4"

3-5/8"

3-5/8"

C

4-3/8"

4-3/8"

5-1/8"

5-1/8"

C1

2-3/8"

2-3/8"

2-1/2"

2-1/2"

•

Single Jet design with only the impeller in the flow cham-ber for reliable performance

• Economical design and long lasting life

• Tamper Proof “Snap” Cover assures accurate and proper

readings

• The roller counter can be rotated for easy reading

• “Dry Counter” design

• Units available with a pulse output

• Compact design for easy installation

• The meter can be mounted horizontally or vertically

Dimensional Data

ISTEC’s 1800 Series Multi-Jet Water Meter in 1" & 1-1/2"

Size 1” 1 1_⁄2” Qmin Min. fl ow (gpm) ±5% 0.62 0.88 Qt Low fl ow (gpm) ±3% 7.7 22 Qn Cont. fl ow (gpm) ±1% 15 44 Qmax Peak fl ow (gpm) ±1% 30 88 Operating pressure (psi) 230

Operating temperature (°F) 266 L1 H2 H1 B1 Weight (lbs) 1” 1 1_⁄2” 10.25 11.82 5.1 6 1.7 1.8 3.9 3.9 5.15 8.15

Meter size (inches)

Operation

The 1810-H and 1815-H are multijet (inferential) impeller meter. The impeller and magnet are the only moving parts in the measuring chamber. The impeller movement is transferred by a magnetic coupling to the hermetically sealed register, which can be turned to any position for easy reading.

Installation

The meter must be installed in a clean pipeline, free from any foreign materials. The meter shall be installed with the direction of fl ow as indicated by the arrow cast in the meter case. The meter may be installed in horizontal or inclined lines up to 45° with the register facing upward.

Application

The meter is for use with hot water not intended for human consumption, up to 266°F (130°C), and working pressure up to 230 psi (16 bar). Both pressure loss and accuracy tests are made before shipment. No

adjustments need to be made before installation.

Construction

The meter consists of a main case, a strainer, a measuring chamber, an impeller, a removable top plate and O-ring with a magnetically driven register or register pulser assembly and securing ring.

The case has a throated inlet. The measuring element assembly consists of the rotor, straightening vanes, accuracy regulator, spindles and gears. The measuring element is attached to the underside of the cover with three stainless steel screws and washers.

The main case is cast bronze with raised characters showing direction of fl ow. The securing ring secures the internal mechanism and top plate. The unit is sealed by the O-ring gasket. The measuring chamber is designed so the impeller/magnet transfers the fl ow to the register. The register is secured to the main case by the securing ring.

Register

The register is a dust and waterproof hermetically sealed unit (no condensation is caused by variation of

temperature). The register can be turned to any position for easy reading.

Pulser

The pulser consists of a molded insert with a clear housing to read the totalizing register. The pulse element is a dry contact reed switch rated at 4 Watts, maximum voltage: 42V DC/AC, 18 Ohm resistance. The unit requires power from an external source and normally is wired in series with no regard to polarity, approximately 5 feet of 2-wire unshielded cable exists in a sealed fitting.

Connections

The meter casing spuds have external straight threads conforming to NPSM. Bronze coupling nuts and tailpieces (NPT) are included. Temperature / Pulse Temperature (°F) 266 266 1 0.1 1” 1 1_⁄2” ISTEC CORPORATION

5 Park Lake Road, Unit 6 Sparta, NJ 07871 973 383 9888 (Phone)

2 of 2

Pressure Loss

1”

1 ½”

0.15

0.88 1.3 2.2 4.4 8.8

Pressure loss (psi)

13 17 22 44 88 132 176 0.02 0.4 0.6 0.7 1.5

3

4

6

7.25 14.5

Rate of flow (gpm)

ISTEC’s 1800 Series Multi-Jet Water Meter in 1" & 1-1/2"

ISTEC CORPORATION

5 Park Lake Road, Unit 6 Sparta, NJ 07871 973 383 9888 (Phone)

973 383 9088 (Fax) Email: [email protected] Web: www.istec-corp.com

Temperature/pressure rating

*This is the minimum pressure required to prevent steam fl ashing. Flashing can damage the meter permanently

Temperature (°F) 230 250 Min PSIG* 25 45

ISTEC’s 1700 Series 2"

& 3" Woltmann Design Water Meter

5 2 0 -2 -5 Flow rate GPM Er ro r [% ] Q_nQ_max Qmin Qt 5 2 0 -2 -5 Flow rate GPM Er ro r [% ] Q Q Qmin Q

Accuracy Graph

Model Number

1750

1752

1755

1757

Pipe Size

2"

2"

3"

3"

Starting Flow Rate (GPM)

0.039

0.039

0.7

0.7

Minimum Flow Rate (GPM)

1.54

1.54

2.2

2.2

Continuous Flow Rate (GPM)

132

132

528

528

Maximum Flow Rate (GPM)

396

396

880

880

Maximum Operation Temperature (F)

200

200

200

200

Maximum Operation Pressure (PSI)

227

227

227

227

Design

Mounting Connections

Mounting Position

Pulse (gal/pulse)

NO

10/P

NO

100/P

Weight (pounds)

22.5

22.5

28.6

28.6

Flange Diameter

6.1"

6.1"

8.85"

8.85"

Height (Center line Up)

4.84"

4.84"

6.06"

6.06"

Height (Center line Up)

2.95"

2.95"

3.5"

3.5"

Length

7.87"

7.87"

8.85"

8.85"

Woltman

ANSI 150 Flanges

Any

ISTEC CORPORATION

5 Park Lake Road, Sparta, NJ 07871 973 383 9888 (Phone)

• Woltmann Flow Chamber design with only the Impeller operating in

the flow chamber

• Very low head pressure loss

• For warm water to 200°F

• Operating pressure to 227 psi

• Installation in the Horizontal or Vertical position

•

Hermetically Sealed Counter is dust and waterproof preventing inter-nal condensation

• The roller counter can be rotated for easy reading

• The built-in optional reed switch is cast into a waterproof enclosure

and can be field replaced

• Compact design for easy installation

• Unique design simplifies maintenance and repair

Head Loss

1755/1757

5 of 5

ISTEC’s 1800 Series Woltmann Design Water Meter in 2" thru 6"

• Woltmann (Flow Chamber) Design with only the impeller

operating in the flow chamber for reliable performance

• Very low Head Pressure loss

• Installation in Horizontal or Vertical positions

• Hermetically-sealed Counter is dust and water proof preventing

internal condensation

• Roller Counter can be rotated for easy reading

• Built-in Reed Switch is cast into a waterproof enclosure and can

be field replaced (Contact Rating 24V, 0.2A)

• Compact Design for easy installation

• Field Replaceable Flow Chamber is factory calibrated

Model

1825

1830

1835

1840

Pipe Size

2"

3"

4"

6"

Min. Flow Rate (gpm)

2.6

14.1

8.8

35

Continuous Flow Rate (gpm)

66

140.9

264

880.6

Max. Flow Rate (gpm)

264

396.3

792.5

1320.9

Max. Operation Temperature (°F)

248

248

248

248

Max. Operation Pressure (PSI)

232

232

232

232

Design

Woltmann

Woltmann

Woltmann

Woltmann

Mounting Connections

Flanged

Flanged

Flanged

Flanged

Mounting Position

Horz or Vert

Horz or Vert Horz or Vert Horz or Vert

Pulse (gal/pulse)

10

10

10

100

Weight (pounds)

25

31

48

88

Dimensions

1825

1830

1835

1840

Pipe Size

2"

3"

4"

6"

A

5-1/2"

5-1/2"

8-1/4"

9"

B

3"

3-3/4"

4-3/8"

5-3/4"

C

7-7/8"

8-7/8"

9-7/8"

11-7/8"

1800 Series Dimensions

SUBMETERING - HEATING OR COOLING

Submetering is nothing new. We are all familiar with electric meters, water

meters, gas meters, etc. The user has to be responsible for the consumption

of all energy sources and is charged for the quantity used. The thriftier he is in

using these energy sources, the more he can save in energy costs. This basic

premise has worked for products and services. We are all aware that money is

one of the most influential factors in controlling people’s actions. Statistics have

shown that tenants who have to pay for heating or cooling on a separate

invoice soon become energy-conscious, and save approximately 20-25%. If

the heating cost is included in the rental agreement, a room thermostat is

never lowered and the temperature is regulated by opening the windows.

What a waste of energy! What a waste of money for the person who has to

pay the energy bill! This is the main reason half of Europe has to allocate

energy consumption by law. Energy usage is measured and tenants are billed

for energy costs.

ISTEC BTU Meters are modern, high-accuracy measuring instruments that

calculate how much energy each tenant has used so that the cost can

be allocated. BTU Meters measure the temperature difference between

the heating supply and the return lines; they also measure how much hot

water has gone through the piping system. This allows the Meter to

calculate the exact energy that has been used. Allocation of energy cost

is encouraged because it promotes conservation, which is of major

importance worldwide.

5 Park Lake Road, Sparta NJ 07871

www.istec-corp.com

Tel +1-973-383-9888

F

ax +1-973-383-9088

ALLOCATION METHOD BASED ON ENERGY METER READING

AND SQUARE FOOT AREA OF APARTMENT

This sample allocation method is for six tenants and is based on Energy Meter readings and area of the tenant’s

apartment (base cost). The apartments in this example have three different square foot areas. 50% of the total

Energy cost will be allocated based on the square foot area of each apartment and 50% will be allocated on the

Energy Meter readings.

1.

Monthly cost of Energy (oil, gas, electricity, etc.)

$480.00

2.

Operating Cost:

Electricity, Maintenance, Reading the meter and invoicing tenants

$ 56.00

3.

Total Energy Cost

$536.00

Distribution of Energy Cost

50%

-

Size

of

Apartment

$268.00

50%

-

Meter

Reading

$268.00

4.

Cost Allocation of Square Foot Area

Amount to be allocated: $268.00

Total sq. foot area (all tenants): 3350 sq. ft.

Cost per square foot area:

$268: 3350 = .08 per sq. ft.

Tenant A. 500 sq. ft. @ 8¢ per sq. ft. = $ 40.00

Tenant B. 600 sq. ft. @ 8¢ per sq. ft. = $ 48.00

Tenant C. 550 sq. ft. @ 8¢ per sq. ft. = $ 44.00

Tenant D. 550 sq. ft. @ 8¢ per sq. ft. = $ 44.00

Tenant E. 550 sq. ft. @ 8¢ per sq. ft. = $ 44.00

Tenant F. 600 sq. ft. @ 8¢ per sq. ft. = $ 48.00

$268.00

5.

Cost Allocation on Meter Reading

Amount to be allocated: $268.00

Total Energy Units used (all tenants): 6700 units

Cost per Energy Unit: $ 268 : 6700 = .04 per unit

Tenant A. 1100 Energy Units @ 4¢ per unit = $ 44.00

Tenant B. 1300 Energy Units @ 4¢ per unit = $ 52.00

Tenant C. 800 Energy Units @ 4¢ per unit = $ 32.00

Tenant D. 1000 Energy Units @ 4¢ per unit = $ 40.00

Tenant E. 1600 Energy Units @ 4¢ per unit = $ 64.00

Tenant F. 900 Energy Units @ 4¢ per unit = $ 36.00

6700 Energy Units

$268.00

6.

Individual Billing to Tenants

Sq. Ft. Area Energy Units

(Base Cost)

Used

Total

Tenant

A.

$40.00

$44.00

=

$

84.00

Tenant

B.

$48.00

$52.00

=

$100.00

Tenant

C.

$44.00

$32.00

=

$

76.00

Tenant

D.

$44.00

$40.00

=

$

84.00

Tenant

E.

$44.00

$64.00

=

$108.00

Tenant

F.

$48.00

$36.00

=

$ 84.00

Total $536.00

5 Park Lake Road, Sparta NJ 07871

Tel: +1-973-383-9888, Fax: +1-973-383-9088

www.istec-corp.com

[email protected]