BARTEC BENKE HYGROPHIL H 4230-12 Ex Zone II, Operating Instructions Manual, Page: 19 / 112

System description
13
Operating Instructions HYGROPHIL® H 4230-12 BA 060207
1.4 Technical data
Humidity measurement
Measurement principle Psychrometric gas humidity measurement in line with the impact jet method
Transducer PT 100/ 4-conductor in accordance with DIN IEC 751
Computational accuracy
 0.01%
Computing time Approx. 2s
Settling time t
90
= 90s (for sudden change in SH from 10 to 190 g/kg)
Air/gas flow rate Adjustable, max. 17,5 Nl/min
Water intake Max. 25 ml/h (hose pump)
Water reserve 2l (enough for approx. 3 days)
Compressed air intake 2...5 bar (max. air consumption 2000 Nl/h) -when operating without over-pressure-
Measured variable inputs
Measured variable Measurement range Resolution Accuracy Type
Dry temperature TT 0...140 °C
0.1 °C

0.5% of the
measurement
range
Primary
Humid temperature HT 0...140 °C
Temperature T1
external
(optional) 0...200 °C
Absolute pressure SP 500...1500 hPa 1 hPa
 1%
Dew-point temperature DT 20...100 °C 0.1 °C Calculated
Volumetric content H
2
O Vol% 2...100 % 0.1 %
Absolute humidity MH 15...1000 g/kg 1 g/kg
Specific humidity SH 15...1000 g/kg 1 g/kg
Enthalpy h 35...1000 kJ/kg 1 kJ/kg
Current vapour pressure VP 10...1000 hPa 1 hPa
Saturation deficit DVP 0...1000 hPa 1 hPa
Outputs
Signal output
Analogue output 2 electrically isolated output channels, can be assigned to each of the measurement
ranges, spread, error behaviour programmable
Output signal 0…20 mA or 4…20 mA (programmable), linear
Permissible load

500

Accuracy

0.2% of the associated measured value
Inputs
External water detector 24 V d.c., NPN
T1
external
PT 100/ 4-conductor in accordance with DIN IEC 751
Data interface
Field bus interface PROFIBUS DP
Electrical data
Auxiliary power Measuring unit: 90…264 V a.c., 47...63 Hz, approx. 30 VA
Gas sampling hose: 230 V or 115 V a.c.; approx. 100 VA/m
Relay
Warning relay Display of warnings Load: 1 A/24 V d.c., at least 10 mA
ERROR relay Display of failures Load: 1 A/24 V d.c., at least 10 mA
Ambient conditions
Permitted working temperature +5...+50 °C
Permitted storage temperature -20...+70 °C (without water)
Climate category KWF in accordance with DIN 40040
Reference conditions
23 °C

2 °C / 230V ± 2%