Gas Volume CoNverter
Gas Volume Converter (Also known as "Electronic Volume Corrector")
TEC-III EVC is designed to calculate gas volumes under base conditions, based on a volume at metering conditions, a temperature, a pressure and a compressibility factor. Its volume input is a low frequency one that can be connected to any Ex compliant gas meter that provides such information.
- Make: Tancy Instrument Group Co. Ltd.
- Model: TEC-III
- Housing Material: Aluminum
- Dimensions: 202x183x72 mm
- Weight: 2.5 kg
- Display: Dot matrix LCD 256*160 - graphic 4" with backlight
- Keyboard: 6 buttons touch screen-up, down, left, right, enter, return
- Base conditions: Adjustable by authorized service personnel, available options:
*Reference Pressure Pb (absolute): 1.01325 bar
*Reference Temperature Tb: 288.15 Deg. K
- The maximum permissible error (MPE) according to standard "EN12405-2": ECD Class A
- Algorithms for calculations of compressibility factor: SGERG-88, AGA8-92DC, AGA8-G1, AGA8-G2, AGA NX-19 mod. constant, compression factor K1
- Relative Humidity: Max. 95% at temp. 70 Deg. C
- Ambient Temperature range: -25 to +55 Deg. C (MID Certified), -25 to +70 Deg. C (without MID)
- Ingress Protection level: IP66 (EN 60529)
- Environment Conditions Class (Mechanical/Electromagnetic): M2/E2
- Ex Classification (According to EN60079-0, EN60079-11): Ex II 1 G Ex ia IIB T4 Ga, Ex II 2 G Ex ib IIB T3 Gb
- Internal Supply for EVC: D-size Lithium battery 3.6 Vdc/19Ah, under specified conditions: 6 years/pcs
- Internal Supply for Modem: 2 D-size lithium batteries 3.6 Vdc/19Ah, operating time: 6 years, (2 communication per day)
- External Supply: Intrinsically safe power supply INT-S3 or others (Supply output 6.5 Vdc+/- 10%, Supply Input: 12 to 24 Vdc +/- 10%)
- Transmission Ports: 2 independent serial transmission ports, speed up to 19200 bps: COM1, COM2
standard RS485
Optical Interface COM3 IEC 62056-21
GSM 2G/3G/4G, NB-IoT option
Bluetooth 5.0 option
- Transmission protocols: MODBUS RTU, TANCY Remote protocol
- Pressure Sensor: P1, External, Screw Thread NPT 1/4"
Pressure sensor range option: 0.8-2/1-5/2-10/4-20/10-50/20-100/0.8-10/4-100 MID Certified
0.8-5/0.8-20/1-35/1-50/2-70/5-120 without MID certified
Maximum Permissible Error: +/-0.2% of measured value base conditions
+/-0.5% of measured value operating conditions
- Temperature Sensor: RTD, diameter 6 mm
Temperature Range: -30 to +80 Deg. C
Maximum Permissible Error: +/- 0.1% of measured value base condition
+/- 0.2% of measured value operating condition
- Inputs: 2 LF inputs, reed contact, pulse signal, 2 TS tamper protection switch closed by default, 1 HF inputs, frequency up to 5kHz EN60947-5-6, 2 Ex digital inputs, Binary input
- Outputs: 4x Ex digital, OC outputs separated: 1x configurable-binary or frequency up to 5kHz, 3x configurable binary open collector type
- Analog outputs: 4/20 mA two wire analog current output, +/- 0.25% FS output error of Qb or Qm optional
- Data Storage: Based on specific conditions: Periodic-1440 records, Hourly-11500 records, Daily-4 years, Monthly-more than 10 years
- Event Archives: Alarm events, IoT communicating event, resetting event, calibration log, gas component changed log