Calibration
WIKA data sheet CT 61.30
Page 1 of 5
WIKA data sheet CT 61.30
∙ 07/2021
Data sheets showing similar products and accessories:
Reference thermometer; model CTP5000; see data sheet CT 61.20
Standard platinum resistance thermometer (SPRT); model CTP5000-T25; see data sheet CT 61.25
Hand-held thermometer, precision version; models CTH6500, CTH65I0; see data sheet CT 55.10
Multi-functional precision thermometer; model CTR3000; see data sheet CT 60.15
Reference thermometer
Model CTP6000
Description
The CTP6000 platinum resistance thermometer (PRT) has
been designed both for precise temperature measurement
in xed laboratories and also for on-site use. It combines
excellent technical characteristics with a robust design. If the
‘o the shelf’ range will not suit the needs the thermometers
can be supplied custom manufactured to almost any
specication.
The thermometer's connections range from open cable ends,
through common DIN connectors, to intelligent SMART
connectors. With a SMART connector, the sensor-specic
coecients can be stored directly in the probe's connector.
Thus the SMART connector can easily be switched between
instruments or channels. Any confusion of the coecients is
thus ruled out.
For calibration, the test items and the standard thermometer
are brought to the same temperature in a temperature control
unit.
As soon as a stable temperature is reached, the test items
are read or their output signals are measured (resistance,
thermoelectric voltage, standard signal) and compared with
the standard thermometer.
The CTP6000, with a length of 500 mm [19.69 in], has
been designed specically for xed-point calibration, which
enables a calibration with the highest-possible accuracy.
Applications
■
Reference thermometer for high-accuracy temperature
measurement in a range of -196 … +420 °C
[-321 ... +788 °F]
■
Reference thermometer and a precision instrument for
testing, adjusting and calibrating temperature measuring
instruments in factories and calibration laboratories
■
Comparative calibration in dry-well calibrators, tube
furnaces and liquid baths
Special features
■
Temperature range: -196 ... +420 °C [-321 ... +788 °F]
■
High stability
■
Low drift, long service life
■
Connecting leads, banana plugs, DIN connector or
SMART connector
■
Dierent lengths, therefore also suitable for xed point
calibration
Reference thermometer model CTP6000
WIKA data sheet CT 61.30 ∙ 07/2021 Page 2 of 5
Specications
Measuring element
Type of measuring element Pt100
Resistance at 0 °C [32 °F] 100 Ω
Measuring current 1 mA
Connection method 1 x 4-wire connection
Material Platinum resistance
Accuracy specications
1)
Tolerance class per EN 60751 Class A
Temperature coecient α = 0.00385
Annual drift per EN 60751
2)
< 10 mK
Self-heating error in water at 0 °C [32 °F]
Model CTP6000-200 < 3 mK
Model CTP6000-420 < 5 mK
Reference conditions
Ambient temperature 23 ±2 °C [73 ±2 °F]
Air humidity 40 % r. F. ±25 % r. F.
1) Specications may deviate; they depend on the use of the thermometer. The specied values are typical values for use in laboratories.
2) Previous ageing is required. Recommendation = T
max
+ 10 K over 20 h
Measuring range
Temperature range
Model CTP6000-200 -200 ... +200 °C [-328 ... +392 °F]
Model CTP6000-420 -40 … +420 °C [-40 ... +788 °F]
Max. temperature
At the Handle Max. 80 °C [176 °F]
At the cable Max. 80 °C [176 °F]