WIKA CTH7000 Specifications

Hand-held thermometer
Model CTH7000

Applications

■

Precision thermometer for very accurate temperature
measurements in a range of -200 ... +962 °C

■

Reference instrument for testing, adjusting and calibrat­ing temperature measuring instruments in factories and
calibration laboratories

■

Self-contained, complete system also suitable for on-site
measurements/calibrations

Calibration technology

WIKA data sheet CT 55.50

Special features

■

Temperature range: -200 ... +962 °C

■

Stability: < 0.005 °C per year

■

Dual inputs measuring platinum resistance thermometers

(PRTs) and thermistors single or dierential measurement

■

High long-term stability

Description

The model CTH7000 hand-held thermometer is a high
performance 2-channel thermometer for Pt100 and
thermistor probes. The hand-held thermometer CTH7000 is a
step up in measurement accuracy with a battery power.

The CTH7000 can handle all needs, with accuracies
and resolutions normally associated with a bench top
thermometer. Two inputs give direct temperatures from
Pt100 or thermistor probes or can display the temperature

dierence between them. Measurements can be logged

directly to memory or, use the USB port to control and data
log with the PC.

The CTH7000 will display a statistical analysis of
measurements, with average value, min and max values and
standard deviation. Because the CTH7000 will display in
ohms as well as temperature, it can even be used to calibrate

Hand-held thermometer model CTH7000

one probe against another. Most instruments require to enter

calibrated probe data into memory to optimise measurement
accuracy, which can mean a lot of data entering if you
change probes regularly.

With ASL's SMART connector on the probes, you only need

to store the data once - in the connector! The calibration
data stays with the probe - permanently. The probe can even
be used on another CTH7000 without any further action.

The SMART connector saves time and reduces error. If you

have existing calibrated or uncalibrated probes, no problem,

CTH7000 automatically registers if a probe is SMART or

normal.

Data sheets showing similar products:
Hand-held thermometer; models CTH6500, CTH65I0; see data sheet CT 55.10
Reference thermometer; model CTP5000; see data sheet CT 61.20

Page 1 of 6WIKA data sheet CT 55.50 ∙ 04/2014

Specications

Model CTH7000

Hand-held thermometer

Probe types Pt100 and Pt25 resistance thermometers, NTC thermistors

Measuring inputs 2

Data entry format ITS 90 and CVD for calibrated probes; or EN 60751 for uncalibrated probes

Measuring ranges

Probe current DC 1 mA (Pt100); Auto-select 1 mA, 10 µA and 3 µA for thermistors

Temperature range -200 ... +962 °C, depending on thermometer probe

Accuracy

Resistance thermometers

NTC thermistors 0 ... 400 Ω

1) The accuracy in K denes the deviation between the measured value and the reference value. (Only valid for indicating instruments.)

1)

Digital indicator

Display

Screen Large 4 1/2-digit two-line LCD screen with backlighting

Resolution 0.001 °C

Functions

Memory approx. 8,000 values

Functions via key press Statistical analysis: Min/Max, average and standard deviation, Hold, Zero, one-shot measure-

Real-time clock integrated clock with date and year

Voltage supply

Power supply Nickel-Metal Hydride (Ni-MH) rechargeable battery

Battery life approx. 20 hours of operation

Permissible ambient conditions

Operating temperature 15 ... 25 °C

Storage temperature -20 ... +50 °C

Communication

Interface USB

Case

Dimensions 232 x 97 x 53 mm (L x D x W)

Weight 500 g

0.015 K

400 Ω ... 50 kΩ
50 ... 400 kΩ

ment, measurement log

Charging socket built-in low battery indicator

±0.006 Ω

±0.01 % of reading
±0.02 % of reading

CE conformity, certicates

CE conformity

EMC directive 2004/108/EC, EN 61326 emission (group 1, class B) and interference immunity (portable test

and measuring equipment)

Certicates

Calibration Standard: 3.1 calibration certicate per DIN EN 10204

Option: DKD/DAkkS calibration certicate

Recommended calibration interval 1 year (depending on the conditions of usage)

Approvals and certicates, see website

Page 2 of 6 WIKA data sheet CT 55.50 ∙ 04/2014