General information | Based on DINВ ENВ 61207/IECВ 1207. All data based on digital gas mixture H2 in N2 |
Measuring ranges | 4, internally and externally switchable; automatic measuring range changeover also possible |
Largest possible measuring span | 100В vol.% H2 (for smallest measuring span, see "Function") |
Measuring ranges with suppressed zero point | Any zero point within 0В ... 100 vol.% can be implemented; smallest possible measuring span: 5% H2 |
Operating position | Front wall, vertical |
Conformity | CE mark in accordance with ENВ 61326/A1 and EN 61010/1 |
Design, enclosure | В |
Degree of protection | IP65 according to ENВ 60529 |
Weight | Approx. 25 kg |
Electrical characteristics | В |
EMC interference immunity (electromagnetic compatibility) All signal lines must be shielded. Measured value deviations of up to 4% of the smallest measuring range may occur in ranges with strong electromagnetic interference. | In accordance with standard requirements of NAMUR NE21 (08/98) |
Electrical safety | In accordance with ENВ 61010-1; overvoltage category II |
Auxiliary power (see nameplate) | 100В VВ AC -10%В ...В 120В VВ AC +10%,
48В ...В 63В Hz or 200В VВ AC -10%В ...В 240В VВ AC +10%,
48В ...В 63В Hz |
Power consumption (unit) | Approx. 20 VA |
Fuse values | 100В to 120В V: 1.0T/250
200В ... 240В V: 0.63 T/250 |
Gas inlet conditions | В |
Sample gas pressure | 800В to 1В 100 hPa (absolute) |
Sample gas flow | 30В to 90 l/h (0.5В to 1.5В l/min) |
Sample gas temperature | Min. 0 to max. 50В В°C, but above the dew point |
Temperature of the measuring cell | Approx. 60В ВєC |
Sample gas humidity | < 90% relative humidity |
Purging gas pressure | В |
| 165В hPa above ambient pressure |
| Max. 250В hPa above ambient pressure |
Time response | Based on sample gas pressure 1В 000В hPa absolute, 0.5 l/min sample gas flow and 25В В°C ambient temperature |
Warm-up period | <В 30В min (the technical specification will be met after 2 hours) |
Delayed display (T90) | <В 5В s |
Electrical damping | 0В ...В 100В s, configurable |
Dead time (at 1 l/min) | Approx. 0.5В s |
Measuring response | Based on sample gas pressure 1В 013В hPa absolute, 0.5 l/min sample gas flow and 25В В°C ambient temperature |
Output signal fluctuation (maximum accuracy achieved after 2 hours) | <В В±В 0.75% of the smallest possible measuring range according to rating plate, with electronic damping constant of 1В s (ПѓВ = 0.25%) |
Zero point drift | <В В±В 1%/week of the smallest possible measuring span according to rating plate |
Measured-value drift | <В В±В 1%/week of the smallest possible measuring span according to rating plate |
Repeatability | <В 1% of the current measuring range |
Detection limit | 1% of the current measuring range |
Linearity error | <В В±В 1% of the current measuring range |
Influencing variables | Based on sample gas pressure 1013В hPa absolute, 0.5 l/min sample gas flow and 25В В°C ambient temperature |
Ambient temperature | <В 1%/10В K referred to smallest possible measuring span according to rating plate |
Accompanying gases | Deviation from zero point (for influence of interfering gas, see section "Cross-interference") |
Sample gas flow | <В 0.2% of the smallest possible span according to rating plate with a change in flow of 0.1В l/min within the permissible flow range |
Sample gas pressure | <В 1% of the current measuring range with a pressure change of 100В hPa |
Electrical inputs and outputs | В |
Analog output | 0/2/4В ...В 20В mA, floating;
load max.В 750В О© |
Relay outputs | 6, with changeover contacts, freely configurable, e.g. for measuring range identification; load: 24В V AC/DC/1В A, floating |
Analog inputs | 2, dimensioned for 0/2/4 ... 20 mA for external pressure sensor and correction of cross-interference |
Digital inputs | 6, designed for 24В V, floating, freely configurable, e.g. for measuring range switchover |
Serial interface | RSВ 485 |
Options | AUTOCAL function each with 8 additional digital inputs and relay outputs, also with PROFIBUSВ PA or PROFIBUSВ DP |
Climatic conditions | В |
Permissible ambient temperature | -30В ...В +70 В°C during storage and transportation, 5В ...В 45В В°C in operation |
Permissible humidity (dew point must not be fallen below) | <В 90% relative humidity as annual average, during storage and transportation |
