ISTEC Corporation, your Flow Measurement and Control Specialist

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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We will be closed on May 24th and May 27th, 2019 in observation of Memorial Day.

We will open again on Tuesday May 28th, 2019

Remember our troops in your prayers as they keep us safe on this Memorial Day.

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Scylar Energy Meter

Scylar Model 5202S Energy Meter APPLICATION

Scylar Model 5202S Energy Meter is designed for use in heating systems, cooling systems, and heating/cooling systems. This highly accurate energy calculator records all data needed to sub-meter from small apartments to large district heating/cooling applications.


  • For heating, cooling or combined heating/cooling
  • Measurement accuracy fulfills the requirements according to EN 1434
  • Improved power consumption – longer battery lifetime
  • Approved according to MID and PTB K 7.2 (cooling)
  • Programmable history memory (daily, weekly, monthly)
  • Windows based software for customizing to user's specific needs
  • Individual remote reading (AMR) with optional add on modules
  • Optional network communication
Application Heating - Cooling - Heating and Cooling
Approval MID (DE-10-MI004-PTB004) and PTB K7.2 for cooling (22.75/11.02)
Protection Class IP 54
Battery Supply 3.6VDC A-cell 11 years lifetime
3.6VDC D-cell 16 years lifetime (optional)
Power Supply 24VAC (optional)
Volume Pulse Input Frequency Max. 200Hz; Pulse Durance >3ms
Pulse Value g/pulse 1, 10, 100
Temperature Sensor Type Pt 100 / Pt 500
Measuring Cycle Volume 2 sec
Measuring Cycle Flow 8 sec
Ambient Class Class E2 + M2
Ambient Temperature 32°F to 131°F
Ambient Storage Temperature -13°F to +140°F (>35 °F max. 4 weeks)
Communication Communication Interfaces
(e.g., M-Bus + M-Bus; 2 primary address, 1 secondary address)
Interfaces Standard Optical ZVEI Interface
Interfaces Optional 2 slots for modules with M-Bus, pulse output, pulse input, combined pulse input/output or analogue output
Temperature Range Heating 41°F to 266°F / 302°F
Temperature Range Cooling 41°F to 90°F
Temperature Range Heating/Cooling 41°F to 105°F
Display Indication LCD, 8-digit
Units MBTU - gal - GPM - °F (special order m³ - m³/h - MWh - kWh - GJ - Gcal - °C)
Total Values 99,999,999 - 9,999,999.9 - 999,999.99 - 99,999.999
Values Displayed Energy - Power - Volume - Flow rate - Temperature and more
Optical ZVEI interface, for communication and testing, M-Bus protocol, 2400 baud
M-Bus Configurable telegram, according to EN1434-3, data reading and parametrization are via two wires with polarity reversal protection, auto baud detect (300 and 2400 baud), 2 M-Bus with 2 primary address
Pulse Output Module with 2 Open Collector pulse outputs (potential-free), output 1: 4 Hz (pulse width 125 ms), pulse or static conditions (e.g. errors), output 2: 100 Hz (pulse width ≥ 5 ms), ratio: pulse duration / pulse break ~ 1:1, configurable via IZAR@SET software.
Pulse Input Module with 2 pulse inputs, max. 20 Hz, configurable via IZAR@SET software, data can be transferred remotely.
Combined Pulse Input/Output Module with 2 pulse inputs and 1 pulse output, configurable via IZAR@SET software, needed for leak detection.
Analog Output Module for 4-20 mA with 2 programmable passive outputs, programmable value in case of error.
Sensor Current  
Pt 100 peak < 8; rms < 0.015, Pt 500 peak < 2; rms < 0.012
Measuring Cycle
With mains unit: 2s; with A-cell battery: 16 s; with D-cell battery: 4s
Starting Temperature Difference
Min. Temperature Difference
Max. Temperature Difference
Absolute Temperature Measuring Range
  -4°F to 374°F

Scylar Dimensions

Overall Length
Width of Calculator

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