wtw LF 330, Инструкции по эксплуатации, Страница: 55 / 68

LF 330
LF 340
Technical data Technical data
LF 330
LF 340
54 55
Housing
Length
Width
Height
Weight
Color 172 mm
80 mm
37 mm
approx. 0.3 kg (total weight of meter)
black, RAL 9005
EMC and VDE Standards
Protection degree
Protection class
Climate class
EMC Emission
EMC Immunity
IP 66 IEC 529
3 IEC 1010
JVD DIN 40040
Generic standard EN 50081-1 standard part
FCC class A
Generic standard EN 50082-1 standard part
Operation conditions
Operating temperature
Storing temperature -10 ... 55°C
-25 ... 65°C
Operation in the open, dew possible
Relative humidity Yearly mean: < 90 %
30 days/year: <100 %
Other days: < 80 %
Power supply
Non-rechargeable batteries
(non-rechargeable battery
versions only)
Rechargeable batteries
(rechargeable battery
version only)
Working time
Mains
(rechargeable battery
version only)
4 x 1,5 V batteries, typ AA or
Rechargeable batteries: 4 x NiCad Typ AA,
1.2 V/max. 750 mAh
• 500 ... 2500 h (depending on conductivity)
with Alk./Mang. batteries
• 150 ... 600 h (depending on conductivity) with
NiCad rechargeable batteries 150 .. 800 h
Line adaptor FRIWO FW 1199/11.7864,
Friwo Part No. 1762613
Input: 230 VAC/(+10%/-15%)/50Hz/5.6 VA
Output: 12 VDC/130 mA/1.56 VA
Line adaptor FRIWO FW 1199/11.7880,
Friwo Part No. 1794043
Input: 120 VAC/(+10%/-15%)/60Hz/6 VA
Output: 12 VDC/150 mA
Line adaptor with UK plug
Data security unlimited, not depending on charging condition of
the batteries
Time
Clock
Accuracy Real time clock
1 min/month max. deviation
Memory of measured values
Type
Quantity
Timer for timed storing Ring store
200 measuring records
5 sec, 30 sec, 1 min, 5 min, 10 min, 15 min,
30 min, 60 min
Outputs
(Interface versions only)
The interface (RS 232 or recorder) is automatically recognized and switched over
accordingly when the meter is connected
Analog output Automatic switch-over when the recorder cable
AK 323 is connected
Signal range:
0 ... 1.999 V for range voltage
0 ...1999 digits
Accuracy:
±
0.5 % of displayed value
±
1 mV
at ambient temperature -10°C ... +55°C
Internal resistance:
< 5
Ω
(Current limit
max. 0.2 mA output current)
Serial interface
(Interface versions only)
Type
Baud rate
Data bits
Stop bit
Parity
Handshake
Cable length
Output format
Timer for timed output
Automatic switch-over when the cable AK 340/B
or AK 325/S is connected
RS 232, data output
adjustable 1200, 2400, 4800, 9600 Baud
8
1
None
RTS/CTS + X
on
/X
OFF
max. 15 m
ASCII strings (IBM font)
Field separation by CR, LF
5 sec, 30 sec, 1 min, 10 min, 15 min, 30 min,
60 min, OFF
Connections (electromechanical construction)
Conductivity cell
8 pin WTW socket with pin contacts with latching
device (Protection degree IP 67)
Line adaptor
(rechargeable battery version
only)
2 pin socket with pin contacts for FRIWO plug
Serial interface, analog output
(Interface versions only)
4 pin socket with pin contacts