| Performance | |
Measurement Technology | Thermal Conductivity sensor |
Measured Gases | Air, Ar, CH4, CO2, H2, He, or N2 |
Background Gas | Analyzer is calibrated in the background gas of the process. |
Gas Requirements | Non-condensing sample with particles <3μm |
Measurement Range | Selectable from 0...1 % up to 0...100 %, 50...100 % up to 99...100 % (see order code sheets) |
Display Resolution | 0.0001
0.1 % for XTC ranges > 10 % |
Display Type | Backlit LCD (not on 501-GP2 model) |
Intrinsic Error (Accuracy) | < ± % of range or ±0.05 % H2 or He, whichever is greater
< ±2 % of range (for all other gas mixtures and ranges) |
Response Time (T90) | < 50 seconds for most gas combinations
< 20 seconds H2 or He |
Repeatability | ±0.2 % of range |
Linearity | ±1 % of range |
Zero Stability | ±0.5 % of range per month |
Range Stability | ±0.5 % of range per month |
Sample Flow Rate | 100...500 ml/min (0.2...1.27 scfh) |
Sample Flow Effect (Calibrated at 300 ml/min) | < 1 % of range for flows within stated range |
Sample Pressure | A fixed pressure of 0.75 to 1.5 Bar A (10 to 20 psi A) (unit must be calibrated at the same pressure as sample) |
Maximum Safe Pressure | 2 barg (29 psig) |
Sample Temperature | A constant temperature of 5 to 45 °C |
Sample Cell Temperature | +50 °C |
Electrical Specifications | |
Analog Inputs | 1 off mA input for an external sensor (can be displayed on the screen)
1 off mA input to act as an active compensation for the process conditions |
Analog Outputs | 2 off 4...20 mA outputs (powered with 24V excitation voltage) |
Output Ranges | Primary range is set to the calibrated range of the instrument. The second is user-selectable |
Alarms | 2 off single pole changeover relays for concentration (250 V, 5 A max) |
Datalogging | Digital communications can be used to log the output from the analyzer on an external device |
Digital Communications | Modbus RTU over RS485 Protocol |
Power Supply | 24 V DC; 1.5 A max |
Operating Conditions | |
Ambient Temperature | +5 to +40 °C |
Mechanical Specifications | |
Warm-Up Time | < 25 minutes (at 20 °C ambient) |
Stabilization Time | 5 minutes |
Wetted Materials | 316 stainless steel, borosilicate glass, platinum, (plus O-ring) |
Dimensions (w x d x h) | 260 x 180 x 128 mm |
Weight | Approx. 3 kg |
O-Ring Materials | Viton |
Gas Connection | 1/8” bulkhead standard |
Ingress Protection | IP55 |
