Description
Features:
- User-friendly software and firmware
- Easy data export (text and CSV files)
- Configurable system alarms (dry contact closure/Piezo alert)
- Quarterly audit calibration check (optional audit/calibration kit)
- Remote input for external test pause and resume
Specifications:
Dry Gas Meters: Model SK25EX series, positive displacement type, 0.7 liter per revolution, optical encoder sensor with quadrature pulse output, 8-digit LCD display, 1 cubic cm resolution
Sample pumps: BTC diaphragm, brush-less motor, 12 VDC, 20 inHg vacuum, 10,000 hour MTBF, 3900 RPM, max. PSIG 24 inHg
Sample flow control:
- Stainless steel sample manifolds fitted with mass flow sensors, vacuum sensors, and proportional valves
- Proportional or constant flow sampling
- Mass airflow: proportional flow control, 200 to 2400 ccm, port-style, manifold mount
- Proportional valve: voltage-sensitive orifice (VSO), 12 VDC
Data acquisition control board (DAC):
- Enhanced flash 16-bit RISC-based microcontrollers; main and digital signal processing (DS), a real-time clock with auto backup and write protection to external SRAM
- High Speed 14bit A/D converter with parallel DSP interface
- SD memory card for data storage – stores up to 99 tests (30-day test runs), embedded ethernet Port with full TCP/IP protocol and 256-bit encryption
- USB 2.0 comm input connection
Thermocouple multiplexer:
- Accepts type-K thermocouple inputs; input protection includes gas discharge tubes for ESD and surge protection
- 11 pic microcontrollers, 1 for each channel and MUX circuitry
- MUX circuitry to receive multiple inputs and transmit selected output
- 10 microcontrollers, one for each optically isolated channel
Integrated temperature control:
- Designed into DAC for probe/trap heat control output via 25-amp solid-state relay
Barometric pressure: 600-1100 mbar, 17.7-32.4 inHg, temperature-compensated, amplified output
Vacuum: 0-30 inHg, 0-101 kPa, 2% accuracy
Communications:
- PC user interface via cthernet, USB, or optional wireless router
- Remote access and control via onboard configurable router to owner’s network computer
- TCP/IP MODBUS (ASCII or RTU) communications to the DAHS
- Interface to DAHS system via TCP/IP Modbus
Weight: 34 lbs (15.5 Kg)
Dimensions: HxWxD 14” x 19” x 15.5” (35.56 cm x 48.26 cm x 39.37 cm)