High accuracy and durability with the reliable TCI

The TCI electronic temperature compensating index is an advanced technology for natural gas rotary meters that is simple to use. This index is your ideal replacement for mechanical TC indexes. A broad range of configurable parameters gives this index flexibility to suit most rotary applications. The rugged design will provide long-term durability to withstand a wide variety of conditions.


TCI Features

  • 20-year nominal battery life and calibration
  • Live calculated flow rate displayed on numeric LCD with configuration icons to support field DP rate test and field meter service
  • LCD characters electronically inverted to facilitate left-side or right-side meter mounting
  • Redundant input from any rotary meter and adapter plates for all popular rotary meters
  • Back-up memory module containing last 90 days of time stamped data
  • Electronics sealed in silicon potting material for improved reliability and product life
  • UV-resistant polycarbonate enclosures
  • Ruggedized push-button for the LCD scroll
  • User-configurable fixed pressure factor
  • Two isolated volume pulse output channels
  • One isolated pulse output channel for alarm or volume

TCI Temperature Compensating Index Specifications

Technical data
2.5 to 3.6 VDC
Battery life: Nominal 20 years (with dual D cell Lithium batteries)
Temperature Measurement System
Highly stable, solid state temperature sensor (thermistor)
Range : -40 to 170°F (-40 to 70°C)
Temperature Accuracy
-20 to 40°C (-4 to 104°F) +/- 0.1%
-40 to 70°C (-40 to 170°F) +/- 0.25%
Computational Accuracy
+/- 0.3% of compensated volume reading
Long Term Stability
+/- 0.5% reference to absolute temperature
Environmental Conditions
Ambient temperature range: -40 to 170°F (-40 to 76.6°C)
Ambient humidity range: 0 to 100% non-condensing
Ambient Temperature Effects
+/- 0.1% of compensated volume per 100°F from -40 to 76.6°C (-40 to 170°F)
Grey opaque polycarbonate with clear Lexan window over LCD
Designed and tested to comply with NEMA 6 and IP-67 ratings
Immersion test: immersion under 1 meter of water for duration of 72 hours (No AMR connections)
Mounting plate with gasket and bolts to accommodate most rotary meters
System Memory
Backup memory: Last 90 days (running) of daily fixed Item data
Flash: System firmware (upgrade via IrDA)
E2PROM: Configuration and calibration Items
Telemetry Outputs
Two Form-A for Volume and one Form-B for Alarms
Configurable pulse widths to match various AMR units
All outputs are isolated from ground and each other
Outputs are rated from 3.0 volts to 24.0 volts, any polarity
Sink or source up to 10 milliamperes (DC)
IEC61000-4-2 (Electrostatic discharge)
IEC61000-4-3 (Electromagnetic fields)
Measurement Canada Approval No. AG-0562 Rev. 1
Class 1, Division 1 & 2, Group D
FCC Part 1