P755-LOG

Application profile

High precision data logger for temperature (±0,03), 
relative
humidity, dew point, air flow with memory for 6.000
measurements. The instrument is designed for application of
the quality assurance, e.g. testing climatic chambers,
calibration thermostats, oven...or thermoelectrical 
processes.
For the battery-powered instrument we provide a separate
power supply as an option. The measuring interval is
adjustable between 1 second and 30 minutes.
By using our precision Pt100-probes with sensor calibration
code you will reach the on page 12 descripted system
accuracy. The P655-LOG measuring system is the perfect
standard to test subordinated instruments or systems. For
traceability we recommend to order those instruments with a
calibration certificate.

Areas of application in industry and laboratory for example

- For taking measurements for quality assurance under ISO 
9000
- As a reference instrument for checking production
- For taking comparison measurements in service and repair
- For registration of humidity and temperature in air 
conditioning and environmental engineering
- Long-period monitoring of temperature and/or relative 
humidity with online documentation

Product features

- USB interface 
- Optional DE-Graph Windows Software for graphic and 
tabular documentation
- High measuring accuracy
- Integrated calibration function for simple compensation 
of sensor tolerances
- Physical 1-point, 2-point or 3-point calibration function
- Measuring channels are freely assignable
- Recording maximum, minimum, hold and average values
- Integrated sensor holder for one hand operation
- Mains operation possible
- Simultaneous display of two measured values
- Differential temperature display

P650

The two multi-function-instruments are outstanding for 
theri high accuracy of ±0,03°C. You can optional plug in 
Pt100 or thermocouple (type J, K, L, N, R, S, T), as well 
as probes for humidity and flow. The high precision makes 
them eminently suitable as reference instruments for 
testing subordinate measuring instruments in quality 
assurance laboratories or for checking temperature-
critical 
processes. These instruments are frequently provided with 
a 
DKD calibration certificate.

Inputs

2-channel, Pt100, thermocouple: type K, J, L, N, R, S, T, 
humidity, dewpoint, flow

Pt100

-200°C...+850°C

Thermocouple

according DIN (-200°C...+1760°C)

Ohm

0...400 Ohm

Humidity

0 %...100 %rH

Flow

0...40 m/s

Pt100

±0,03°C from -50°C...+199,99°C
±0,05°C from -200°C...+200°C
otherwise 0,05 %

Thermocouple R, S

±1,0°C +0,1 %

Thermocouple K, J, L, N, T

±0,3°C from 0°C...+200°C
±1,0°C to 1000°C
±1,5°C remaining range

Humidity

±1,5 %rH

Flow

0,5 % of end value

Ohm

0,5 % of measuring range

Resolution

0,01°C from -200°C...+200°C
otherwise 0,1°C respectively 0,1 %

Connectors

DIN 8-pole

Working temperature

0°C...+40°C

Display

2-line LCD

Housing

plastic

Dimensions

200 x 93 x 44 mm (LxBxH)

Weight

300 g

Power supply

9 V battery

Batterie life

appr. 20 h