Thommen HM30 - Mains Supply Unit Connection; Maintenance; Battery Changing; Accessories

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Conversion factors
1 mbar = 0,1 kPa
1 mbar = 0,0010 bar
1 mbar = 10,20 mmH
2
O
1 mbar = 0,7501 mmHg
1 mbar = 0,0145 psi
1 mbar = 0,4015 inH
2
O
1 mbar = 0,02953 inHg
1 mbar = 1,0 hPa
4.2 Mains supply unit connection
The HM30 can be operated by a plug-in mains
supply unit.
Input 230 V, 50 Hz
Output 9 V DC (min. 7/max. 12 V DC)
Altitude formula
ph = atmospheric pressure at altitude h (hPa)
qnh = atmospheric pressure at sea level (hPa)
h = height above sea level (m)
5 Maintenance
The HM30 requires no maintenance. It can be
cleaned with a damp cloth. Do not use clean-
ing agents containing solvents!
For battery changing and adjustment; see
relevant chapter.
We recommend that the instrument and com-
bined sensors are recalibrated at least once
per year.
5.1 Battery changing
• Open battery compartment
• Insert a 9 V alkaline block battery (IEC
6LR61) or accumulator
Ensure correct polarity!
Correct disposal of all batteries
accordance with environmental
regulations!
6 Accessories
Standard 1 9 V block battery
1 operating instructions
1 Short temperature sensor
Leather case with carrying strap
Option • Plug-in mains supply unit
230V, 50 Hz
• Combined humidity/
temperature sensor
0...100%rH/-40.. 60°C
• Insertion sensor -50...200°C
• Box
• SCS test certificate
• Adapter RS232 9M-25F
• Communications package
comprising:
• RS232-IF cable (9-pole fem.)
• Software for Microsoft
Windows
• Extension cables:
• sensor 1: 2, 5, 15 m
• sensor 2: 2, 5, 25 m
• Plug-mounted power supply
100...240 V, 50 Hz, with
mains adapter set
• Surface temperature sensor
- 50...200 °C
• Combi sensor for granulate
THOMMEN “
Multiplexer
MX30
” for Temp2
(8/16 channels)
• Short temperature sensor T2