7
Technical data
The technical data of customised versions may differ from these data in the instructions.
Please observe the information specified on the type plate.
7.1
Characteristics TD 8250
Characteristics
TD 8250
Display:
-
Type • Colour • segment height
-
Range
-
Overrun
4 digit 7 segment LED display • red • 7.6 mm
0.000 … 9999 with floating point
9999
Programming
Two keys behind the front panel • Data retention in case of
power failure
Signal input
Pulse signal from flow sensor
Characteristics output signals
Pulse output:
-
Signal(s)
2-channel, depending on flow sensor
-
Signal amplitude
~ 0.8 x supply voltage, load dependent
-
Signal form (with symmetrical
output signal)
Square wave • duty cycle per channel 1:1 ±15%
-
Signal off set between two chan-
nels
90° ±30°
-
Signal output per channel
< 0,3 W • short circuit proof
Analogue output:
-
Signal current
0(4)…20 mA • short circuit proof
-
Resolution 10
Bit
-
Load <
250
Ω
(18…28 V
DC
) • <50
Ω
(10…19 V
DC
)
Relay output:
-
2 alarm contacts
max 24 V
DC
/ 1 A
-
Switching time
~ 6 ms
Electrical characteristics
Supply voltage
18…28 V
DC
• 10…19 V
DC
(optional)
Current consumption
< 120 mA
Degree of protection (
EN 60529)
IP
65
Electrical connection
Plug connector DIN EN 175301-803-A • 4 pins
Process variables
Temperatures:
-
Ambient temperature
-
Storage temperature
0…60 °C
-25…85 °C
Housing:
-
Material
-
Dimensions
[mm]
Aluminium
60 x 35 x 60 (W x H x D) • without plug connector
Weight
~ 0.12 kg
