The integrated temperature sensor has no direct contact to the liquid and is used to calculate the
expansion of the housing. The environment temperature greatly influences the actual temperature
of the temperature sensor. The response time of temperature changes relates to the mounting
position of the temperature sensor inside the housing.
Step-response time after a significant temperature change. (Filter "Off")
Influence of the environment temperature
In the table below some examples of the temperature influence are shown.
In case of an error :
In case of a short circuit of the temperature sensor -50°C are shown.
In case of a cable brake between temperature sensor and electronic -30°C are shown.
Filter
Off
100%
1s
Soft
Medium
16s
1min
Strong
4min
Behavior of the Temperature Sensor
Step-Response Time
Filter Configurations for Temperature Sensor
Step-res
p
onse time
0
20
40
60
80
100
0
5
10
15
20
25
30
35
40
45
Time [min]
T
e
m
p
e
ra
tu
re
[
%
]
Liquid Temp
40
40
40
60
X
X
X
X
X
0.7
0.7
0.7
0.7
+
+
+
+
Environment temp.
20°C
20°C
20°C
0.7
0.3
0.3
0.3
0.3
0.3
=
=
=
=
=
Measured temp.
34°C
37°C
40°C
48°C
+
20°C
X
X
X
X
X
100
80
60
40
20
0
0
1
2
3
4
Step-response with filter
Off
Soft
Medium
Strong
Value [%]
Time [s]
Time [min]
27
PVDF-PE Plastic Ultrasonic Flow Meter
ULTRAFLO 5000
Distributed By Aetna Plastics
www.aetnaplastics.com
Aetna Plastics - Phone 800.634.3074 - Fax 216.524.2280 - Email sales@aetnaplastics.com