Thommen HM30 - Specifications; Technical Data

25
e
4 Specifications
4.1 Technical data
Cal. temperature range -20 to +60 °C
Long term stability
- Pressure sensor ± 1 hPa/year
- Humidity sensor ± 1%rH/year
Temperature sensors Pt100 4-conductor
connection
Units
- Barometric pressure mbar, hPa, mmHg,
inH
2
O, inHg, psia
- Humidity %rF, %rH
- Temp., Dew-point °C, °F
- Height m, ft
- Trend ../h, ../min.
Measuring media
- Combined sensor 1 air
- Temp. sensor 2 water and soft
plastic media,
compatible with
stainless steel V4A
Cable extension max. 50m
RS232 cable lenght max. 50m with
screened RS232
cable
Operating temperature -20 to +60 °C
Storage temperature -30 to +80 °C
Humidity 0 to 95 %rH, non-
condensing
Case protection IP54
Storage interval manual, 1sec to 24h
(15 possibilities)
Memory size max 908
measurements
Baudrate RS232 9600, 2400, 1200
baud
Measuring rate with PC 25 measurements/s
Display rate 2 measurements/s
Display LCD matrix, 2 lines
of 16 characters
Power supply 9V battery (IEC
6LR61), accumula-
tor, regulated plug-
in mains supply unit
(min 7/max 12VDC)
Current consumption
without sensors <12 mA
temp. sensor 1 mA
combined sensor 4 mA
Battery life continuous operation
up to 48 h
Autom. cut-out time continuous operation
1, 10, 30, 60 min
Case measurements 152x83x34/29 mm
Weight including
battery 275 gram
Weight of sensors
and cable 185 gram
Short temperature sensor
Measuring range -20 to +60 °C
Element Pt100 1/3DIN B+
Tolerance acc.
DIN IEC 751 0,1 °C + 0,0017 x t
Response time T
90%
< 10 min.
Error limits ( ± 1 digit, at 22 °C ) incl.
measuring sensor
Pressure (-20 to +60 °C) ± 1 hPa
Humidity
2)
(10 .. 90 %rH) ± 1,5 %rH
(<10, >90 %rH) ± 2,5 %rH
Temperature 1
2)
± 0,3 °C
Dew-point
2)
- at humidity 20 ... 50 % ± 2,5 °C
- at humidity 50 ... 100 % ± 1,5 °C
Temperature 2
2)
± 0,3 °C
Altitude
1)
± 10 m
height differences < 500 m ± 2 m
1 theoretical values without meteorological
ambient influences
2) inc. measuring sensor tolerances
Max. loading capacity
Resolution
Measuring ranges
Pressure 225 ... 1125 hPa 0.1hPa 0/2000hPa
Humidity 0 ... 100 %rF 0.1%rF 0/100%rF
Temperature 1 -40 ... 60 °C0.1°C -40/80°C
Dew-point -30 ... 30 °C0.1°C —
Temperature 2 -50 ... 200 °C0.1°C -50/400°C
Altitude -500 ... 10000 m 1 m —