EnCal 3000

The EnCal 3000 is a gas chromatograph specially designed for fiscal energy measurement of natural gas. It uses chromatography components based on the latest Micro Electro Mechanical Systems (MEMS) technology and capillary columns. This yields highly repeatable and accurate analysis results. The compact analyser contains the analytical hardware, sample conditioning, stream selection and all required electronics for stand-alone operation.


Technical data Downloads  
 

EnCal 3000: Energy measurement analyser

 

Analytical hardware 2 parallel isothermal GC modules with narrow-bore capillary column technology in
combination with MEMS based analytical components 
Analysis output Full composition of any natural gas up to C6+ or C9+ (option), Heating value,
Density, Wobbe index 
Component range 

N2:      0.005 -   20 %                     neo-C5:  0.005 - 0.25 %
CH4:        65 - 100 %                     C5:         0.001 - 0.25 %
CO2:   0.001 - 20 %                       C6:         0.001 - 0.10 %
C2:      0.001 - 10 %                      C7:         0.001 - 0.05 %
C3:      0.001 - 10 %                      C8:         0.001 - 0.05 %
C4:      0.001 - 10 %                      C9+:       0.001 - 0.05 %
Concentrations outside these ranges on request
Performance Uncertainty:                     < 0.1 % for all calculated properties
Repeatability:                   < 0.01 % for all calculated properties
Detection limit for C5:       1 ppm
Analysis time:                  3 min. for C6+ analysis, 5 min. for C9+ analysis
Ambient conditions Temperature: -20 °C to +55 °C
Dimensions  Base diameter 37 cm  x  Height 37 cm  (diameter 14"  x Height 14")
Weight < 30 kg
Approvals ATEX II2G E Ex d IIB T4 (IIC certification pending)
NEC Class I, Div. I, Groups A, B, C and D (pending)
IP 66, Vibration and shock test in acc. with IEC 60068-2-31 and 64
EMC according to EN 61000-6-2 and EN 61000-6-4
PTB-approval ID 7.614/06.56
Power supply  24 V DC, 18 W nominal (50 W start-up peak) for non-heated version
24 V DC, 120 W nominal (170 W start-up peak) for heated version (ambient < 0 °C)
Interfaces Ethernet UTP 10 Base-T for ModBus TCP/IP and PC link
Two RS 232/485 ports for ModBus RTU or ASCII
3 analogue I/O for local sensors (4 - 20 mA or 0 - 10 V DC) 
Analyser Complete stand-alone operation, including all calculations and generation of
report formats, without need for operator intervention. Calculations in acc. with
ISO 6976, GPA 2172 or GOST 22667 
PC requirements  Windows 2000 or Windows XP professional edition (Service pack 1 or higher)
1000 MHz processor, 512 MB RAM, CD-ROM player, free Ethernet port 
Data logging History Log: local storage of last 35 days of all analytical data (analysis, events, alarms,
averages, last chromatogram, calibration data) in accordance with API Report 21.1.
All data available on remote workstation in XML format 
Sample conditioning  Integral part of analyser. Consists of pressure regulators for each stream, moisture trap,
particle filters and double block-and-bleed stream selection for up to 5 streams and
1 calibration gas
Helium Quality N45 or better, supply pressure 5.5 barg, consumption +/- 8 ml / min
Calibration gas Supply pressure 1 barg nominal. Consumption +/- 600 ml / day @ atm. pressure
Composition depending on application