Keterangan
APPLICATIONS
For monitoring heat treating atmosphere gases in any combination of carbon monoxide ( CO) , carbon dioxide ( CO2) , methane ( CH4) , hydrogen ( H2) , oxygen ( O2) , and dew point. Also available for other industrial processes that include hydrogen.
FEATURES
⢠Best value H2-based multi-gas portable analyzer
⢠Fast warm up and response time
⢠Long life thermal conductivity cell for H2 cannot be burned out due to loss of flow
⢠Long life electrochemical O2 sensor
⢠Sensitive infrared detectors for CO, CO2, and CH4
⢠H2 reading compensated for presence of CO, CO2 and CH4
⢠Fast response ceramic dew point sensor
⢠Bright LED digital readouts
⢠Modular layout that is easy to maintain
⢠Rechargable battery operation
⢠Built-in sample pump, flow meter and filters
⢠Rugged bench top ( BT) style cabinet
⢠Solenoid valves used to isolate low range dew point and O2 sensors during sample purge and transportation
to prevent ambient air contamination
OPTIONS
⢠Recorder outputs of 0-1V or 4-20 mA ( can be isolated)
⢠Condensate removal for wet applications
⢠Suitcase ( K) style cabinet available
⢠AC power operation
⢠Carbon potential calculation with CO, CO2 and CH4 channels
⢠Sensor mounted in temperature controlled heated box for improved accuracy ( AC only)
⢠LCD digital readouts with backlight
CALIBRATION
⢠Analyzed calibration gas mixture to span all readings.
DESCRIPTION
The Nova Model 7900P Series Heat Treat analyzers utilize a three channel high stability infrared detector for the
simultaneous measurement of CO, CO2, and CH4 in exothermic or endothermic gas mixtures. In addition, the analyzer can be supplied with a fully compensated thermal conductivity cell for H2. A separate O2 detector can
also be supplied for measuring low ( PPM) or percent levels of oxygen in the atmosphere gas stream. Dew point
is detected by a dielectic ceramic sensor and is available in standard and low ranges. All detected gases have a
separate LCD digital readout and a linear recorder output. The customer may choose any combination of gases
to be measured.
The 7900P series analyzers are complete with integral sampling pump, rechargeable battery, filters, flow meter, and sampling hose. Solenoid valves are used to isolate low range dew point and O2 sensors during purges and when analyzer is not in use to prevent ambient air contamination of the sensors and greatly reduce purge time during start-up.
SPECIFICATIONS
Gases Measured: Customer may select one or more combinations of CO, CO2, H2, CH2, O2, or dew point
Ranges Available: 0-20.0% , 0-100.0% CO
0-2.00% , 0-100.0% CO2
0-40.0% , 0-100.0% H2
0-10% , 0-100.0% CH4
0-10, 000 PPM, 0-50.0% O2
0-100% NH3
-10° to + 80° F( -23° to + 26° C) Dew Point
-148° to + 68° F( -100° to + 20° C) Dew Point
Resolution: 0.1% on % versions, 10 PPM on PPM versions
Accuracy and Repeatability: ± 1% of full scale
Drift: ± 0.5 % of full scale in 8 hours.
Response Time ( T-90) : approximately 20-30 seconds to 90% step range, following warmup
Ambient Temperature Range: 32° to 122° F ( 0 to 50° C)
Linearity: ± 1% of full scale for each gas measured
Size and Weight: 10" H x 10" W x 14" D ( 25 x 25 x 35 cm) @ approx. 20 lbs ( 9 kg)
Physical data may vary depending on model and options selected
Power: 115VAC 60Hz ( 220VAC 50Hz available)
Output Options: 4-20 mA for each gas measured. 0-1 VDC or serial output also available
Prioritas Indotrade