ISTEC CORPORATION
Flow Measurement & Control
5 Park Lake Road, Unit 6
Sparta, NJ 07871
Tel 973-383-9888
Fax 973-383-9088
Email
OFFICE HOURS
Monday thru Friday
:00am to 5:00pm
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4400 Series Compact Energy Meter
ISTEC'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
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| TECHNICAL DATA FOR FLOW METER | ||
Flow Rate Range |
Max. GPM |
22 |
Continuous Flow GPM |
11 |
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Min. GPM |
0.11 |
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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 |
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.
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Download PDF Version • Download Installation Manual • Download EN1434 Approval