PTZ-BOX 5.0 User manual, document edition: 13
24
Metrological properties
Temperature measurement
The temperature sensor
CT6A
(Optional: Pt1000/2w or Pt1000/4w/cl.A) is part of each PTZ-BOX 5.0
device. The sensor is available in 2 types of sheath length: fixed length “50” and adjustable length
“140,160,180”. Each piece of sensor is checked at the manufacturer’s laboratory to mee
t the
accuracy class requirements.
WARNING!
Length of sensor sheath needs to be adjusted to diameter of gas pipeline.
Technical data:
•
Measurement range: -
40 °C ÷ +
80
°C,
•
Transducer - platinum resistor Pt1000 class A,
•
Connection cable with 4- or 2- wires, 2 m (standard), max 10 m,
•
Measuring resistor is galvanically isolated from the housing,
•
For mounting of sensor in thermometer sleeve is used connector with thread M20
×
1,5.
Mounting of temperature sensor with the usage of supplied connector provides protection against
penetration of moisture, liquids and dust into the thermometer sleeve. This protection meets the
requirements of the degree of protection IP54 in accordance with EN 60529.
The CT6A temperature sensor must always be attached to the gas pipeline in closed
thermowell sleeve. Do not insert the sensor directly into the gas pipeline.
Only temperature sensors whose serial number on the name plate is identical like the one
presented on device display are allowed to operate. Name plate of the sensor is affixed to
the cable and secured by additional foil jacket. Do not damage the plate during installation
and operation of the device.
1
–
values of errors referred to correct values of temperature, expressed in [K].
Pressure measurement
Measuring ranges:
Maximum permissible errors for measurements of p1 and p2
Ambient temperature
20 °C (± 3 °C)
(-25
70) °C
Measurement of gas pressure
p1
(for billing) or
p2
(auxiliary, optional)
(0,8
6) bar abs
(0,8
10) bar abs
(2
10) bar abs
2
(4
20) bar abs
2
(7
35) bar abs
2
(4
70) bar abs
2
± 0,2 % of measured value
± 0,5 % of measured value
Measuring range:
Maximum permissible errors for measurements of t
1
Ambient temperature
20 °C (± 3 °C)
(-25
70) °C
Measurement of gas temperature
t
(-30
70) °C
± 0,
1 %
± 0,
2 %
