JUMO 202755/20, Руководство по эксплуатации

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5 Device description
5.1.3 Temperature transmitter
Temperature
acquisition manually -20.0 — 25.0 — 150°C/°F
or
automatically
Temperature
measurement
range -20 — 150°C/°F
Characteristic linear
Tolerance
≤
0.5% of range
Output signal
for temperature 0 — 10 V / 10 — 0 V
2 — 10 V / 10 — 2 V
0 — 20 mA / 20 — 0 mA
4 — 20 mA / 20 — 4 mA
The output signal is im Bereich -20...+200°C freely scalable.
The sensor can be used in the range -10...+100°C.
Burden
≤
500
Ω
for current output
≥
2 k
Ω
for voltage output
Analog output
for “Alarm” Low (0 mA / 0 V / 3.4 mA / 1.4 V) or
High (22.0 mA / 10.7 V) or
a value with a fixed setting (safe value)
5.1.4 Temperature compensation
Reference
temperature 15 to 30
°
C, adjustable
Temperature
coefficient 0.0 to 5.5 %/°C, adjustable
Compensation
range -20 to 150°C
Function - Linear compensation (constant temperature coefficient).
This type of compensation can be used with normal water with an
acceptable level of accuracy. The temperature coefficient used is then
about 2,2 %/K.
- Natural water (DIN EN27888 or ISO 7888 as the case may be).
In this case, a so-called non-linear temperature compensation is used.
According to the above standard, the corresponding type of compensation
can be applied in the case of natural ground water, mountain spring water
and surface warter.