Siemens 7MB2531 Operating Instructions Manual page 65

Sample gas inlet conditions
Sample gas inlet conditions of analyzer versions
Type of gas
Max. pressure p
max
Min. pressure p
min
Temperature
Sample gas flow rate q
v
Pneumatic data of the protective gas
Data values
Enclosure volume
Protective gas
Duration of pre-purging phase
Minimum volume for pre-purging
Flow rate in the pre-purging phase
Compact Operating Instructions in accordance with EN 61010-1 and EN 60079-0
Compact Operating Instructions, 09/2018, A5E45779389002-01
Non-combustible gases or gas mixtures that al‐
ways remain below the LEL in accordance with
Category 4 from EN ISO 13849-1: 2016
• 1100 hPa for CALOMAT 6F and CALOMAT 62F
• 3000 hPa for OXYMAT 6F
• 1500 hPa for ULTRAMAT 6F
• 500 hPa for OXYMAT 6F
• 600 hPa for ULTRAMAT 6F
• 800 hPa for CALOMAT 6F and CALOMAT 62F
CALOMAT 6F: 0 to 50 °C
CALOMAT 62F: 0 to 50 °C
OXYMAT 6F: 0 to 50 °C
OXYMAT 6F: In heated version: 0 to 130 °C, but only 15 °C above temperature analyzer unit
ULTRAMAT 6F: 0 to 50 °C
ULTRAMAT 6F: In heated version: 0 to 80 °C
CALOMAT 6F / CALOMAT 62F: 0.5 ... 1.5 l/min
OXYMAT 6F: 0.3 ... 1.0 l/min
ULTRAMAT 6F: 0.3 ... 1.5 l/min
7.6 Technical specifications for operation in hazardous areas
Combustible gases up to gas mixtures which are
occasionally explosive
• For combustible gases and analyzer versions
Ex px with "leakage compensation"
– 100 hPa (rel.) for ULTRAMAT 6F and OXY‐
• Analyzer versions Ex px with "continuous
purging" as well as
– 1100 hPa for CALOMAT 6F and CALO‐
– 3000 hPa for OXYMAT 6F
– 1500 hPa for ULTRAMAT 6F
• For combustible gases and analyzer versions
Ex px with "leakage compensation"
– -200 hPa (rel.) for ULTRAMAT 6F and OXY‐
Approx. 50 l
• Inert gas (e.g. nitrogen from a gas cylinder)
• Air from an ex-free zone; prerequisite:
– Free of oil and dust
– Particle size < 40 μm
– Oil content < 5 mg/m³
– Dew point < 2 °C at 0.4 MPa
• With pressurized enclosure: only inert gas
5 min
250 l
= 50 l/min. (3 000 l/h)
Technical specifications
MAT 6F
MAT 62F
MAT 6F
65