Process Gas Chromatograph » 931D » Technology
The 931D Process Gas Chromatograph system consists of an analyzer section and a microprocessor-based controller. The analyzer section provides a controlled environment (air bath oven) for the sample injection valves, chromatographic columns, and detectors. The controller section with user interface front panel, dedicated to the analyzer, performs all chromatographic control operations from stream switching in the sample conditioning system through data processing, networking and presentation.
The analyzer is designed to simplify operations, give high reliability and minimize maintenance in a wide range of applications and analysis needs. The 931D can be configured with a variety of detectors such as a Thermal Conductivity Detector (TCD) for measuring percent level of components, Flame ionization Detector (FID) for measuring ppm or ppb levels of hydrocarbons, or the Flame Photometric Detector (FPD) for measuring ppm or ppb levels of sulfur compounds
Gas Requirements
OPERATING AIR
| Dry and oil-free air at 345 kPa (50 psi) minimum and 3.4 to 5.1 m3/h (2 to 3 ft3/min) at standard conditions. Maximum supply pressure is 690 kPa (100 psi). |
ZERO HYDROGEN
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Hyrocarbon-free, dry hydrogen 99.995% pure, at 40 cm3/min (2.4 in3/min) required for FID. Maximum supply pressure is 414 kPa (60 psi). |
ZERO AIR
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Hydrocarbon-free, dry air at 300 cm3/min (0.64 ft3/h) required for FID. Maximum suppy pressure is 414 kPa (60 psi). |
CARRIER GAS
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Per Application (e.g., He, N2, H2). Chromatograph grade required. Maximum supply pressure is 414 kPa (60 psi). |
System Repeatability
±1% of upper-range value, TYPICAL. Refer to Hamilton Sundstrand for specific application repeatability.
Output Range
Either in ppm or percentage, depending on application.
Ambient Temperature Limits
-15 and +50° C (5 and 122° F)
Relative Humidity Limits
0 and 95%, noncondensing
Power Requirements
120 V ac, ±10%, 50/60 Hz, or
220 V ac, ±10%, 50/60 Hz, or
240 V ac, ±10%, 50/60 Hz
Power Consumption
1100 VA
Inside Dimensions of Oven (W x H x D)
457 x 356 x 254 mm (18 x 14 x 10 in)
Inside Oven Wall Material
AISI Type 316 stainless steel (316 ss)
Valve Material
Nitronic-60
Approximate Mass
118 kg (260 lb)
Electrical Safety Specifications
KEMA
Ccertified explosion-protected with approved pressurization EExp for IIB + H2, Zone 1. Temperature Code T3. It is also accepted for use in all other EEC member countries.
FM
Ccertified explosion-protected when Y purged for Class I, Groups B, C, and D, Division 1. Temperature Code T3.
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