ISTEC Corporation, your Flow Measurement and Control Specialist
 

ISTEC CORPORATION
Flow Measurement & Control
5 Park Lake Road, Unit 6
Sparta, NJ 07871 USA
Tel 973-383-9888
Fax 973-383-9088
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4400 Series Compact BTU (Energy) Meter

 Model 4440-4450 BTU Compact Energy MeterISTEC’s 4400 Series Energy Meters are ideal for all Sub-Metering and Performance Verification applications. From a small two-unit apartment to a 400-unit co-op. Heating Model 4440 or Heating / Cooling Model 4450.

FEATURES

  • Fully Electronic Compact Energy Meter
  • Records Energy and Volume Data
  • Highly-accurate Recording of Heating or Cooling & Heating Energy
  • Horizontally or Vertically Mounted
  • Lithium Battery Guarantees a Longer Life than Calibration Interval
  • Single-line, 7-digit LCD Display for Easy Meter Reading
  • Pulse Output for Energy or Flow
  • 3/4" Union Connections

 

  • Heating Systems
  • Cooling Systems
  • Combination Heating/Cooling Systems
  • Solar Thermal Systems
  • Water Source Heat Pumps
  • Cogeneration
  • Heat Reclaim Systems
  • Efficiency Measuring/Verification

The Reduction of Lead in Drinking Water Act of 2011, has been amended to the Safe Drinking Water Act (SDWA) now in effect as of January 4, 2014. The Reduction of Lead in Drinking Water Act of 2011, has been amended to the Safe Drinking Water Act (SDWA) in effect as of January 4, 2014.

Our products include meters for potable use and for manufacturing, irrigation, toilets, or washing machines, which are excluded from the new regulations. Certain products we provide meets the new standard. Consult factory for more information and pricing.

4440-4450 Typical Error Graph 4440-4450 Head Loss Diagram
TECHNICAL DATA FOR FLOW METER
Flow Rate Range
Max. GPM
22
 
Continuous Flow GPM
11
 
Min. GPM
0.11
Head Loss at 11 GPM
PSI
3.5
Starting Flows
GPM
0.026
Operating Pressure
Max. PSI
150
Installation
Mounting Position
Any
Weight
LBS.
2.18

TEHNICAL DATA for CALCULATOR

Basic Features Ambient Class EN 1434 Class C
Protection Class IP 54
Type Compact Heat Meter to EN 1434
Metrological Class Dynamics qp/qi100:1 Class 2

Display Display Indication LCD, 7-digit
Unit MWh - kWh - GJ - MJ - kW - m3/h - l/h - m3- l
Total Values 9 999 999 - 999 999,9 - 99 999,99 - 9 999,999
Values Displayed Power - Energy - Flow Rate - Temperature

Temperature Input Temperature Sensor Type Pt 500 / 2-wire
Measuring Cycle (Ts) 32
Temperature Measurement Range (°F) 32 - 302

Volume/Energy Pulse

Open Collector
(high current sink)

Max. Frequency (Hz) ca. 4
Max. Input Voltage (V) 30
Max. Input Current (mA) 100
Max. Voltage Drop at Active Output (V/mA) 2/27
Max. Currrent thru Inactive Output (µA/V) 5/30
Max. Reverse Voltage without Destroying Outputs (V) 6
Pulse Duration (ms) 125
Min. Pulse Break-pause (ms) 125

Supply Voltage Operating Voltage (UN V DC) 3, 0 (lithium battery)
Nominal Power (PN µW) 30
PULSE OUTPUT

The outputs are open-collector circuits. The collector branch contains only 0 ohm resistance, i.e., there is no internal current limiting. If required, this must be provided externally by a collector resistor.

4440-4450 Pulse Output

4440-4450 Example of Pulse Output
DIMENSIONS
L
5.12"
L1
10.20"
H
2.96"
H1
3.94"
4440-4450 Mechanical Drawing

Download PDF VersionDownload Installation ManualDownload EN1434 Approval