Description

A typical MercSampler System includes:

• Automatic console: XC-30B sampling console
• Gas conditioner: portable versions (TEC-4000HGP Thermoelectric Gas Cooler)
• Stainless steel or alloy probes: optional length with single heater, for dual sample traps (available in 4′, 6′, 9′ and 12′ sizes), Method 30B probes
• Heated umbilical/sample line: heavy-duty self-regulated heated sample line, available in a variety of lengths

Features:

• Fully automated for paired sampling
• Rugged and lightweight roto-molded linear low-density polyethylene (LLDPE/LMDE) case with two molded-in ergonomic carrying handles
• Dual dry gas meters and mass flow sensors
• Alerts for port and traverse point changes
• Simple data export
• Compact portable system
• Eight isolated type-K thermocouple channels
• USB interface
• Easily configured with Windows-based PC

Specifications:

• Dry gas meters:
  • Dual dry gas meters with integrated optical encoders, resolution to 1 cubic cm
  • Model K2 positive displacement type
  • 0.7 liter per revolution
  • Optical encoder sensor with quadrature pulse output

• Sample pumps: dual-head miniature diaphragm pumps with 12 VDC motors, max vacuum 22 inHg

• Sample flow control:
  • Stainless steel sample manifolds fitted with mass flow sensors, vacuum sensors, and proportional valves
  • Constant flow sampling <300 ccm
  • Mass airflow: flow control, 300-2500 ccm
  • 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 14-bit A/D converter with parallel DSP interface
  • 1 GB SD memory card for data storage – stores up to 99 tests
  • USB 2.0 comm input connection

• Communications: PC user interface via USB

• 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

• Pressure:
  • Barometric pressure: 600-1100m bar, 17.7-32.4 inHg, temperature-compensated, amplified output

• Vacuum: 0-30 inHg, 0-101 kPa, 2% accuracy

• Durable UHMW polyethylene case: roto-molded linear low-density polyethylene (LLDPE/LMDE) case with built-in handles (Size 10U) 19-inch rack-mount panel

• AC power: 120 VAC at 60 Hz or 240 VAC at 50 Hz

• Dimensions: 23 in x 21 in x 12 in (58 cm x 53 cm x 30.5 cm)

• Weight: 39 lbs (17.7 kg)