TN 750 S

 

The TN750S thermometer offers ultra high precision measurements to an accuracy better than +/-0.001°C (when used with ITS-90 Pt100 sensor) with resolution at an impressive 0.0001°C (over the range -100 to +100°C or other on request). In addition its self-adaptative linearization mechanism allows to account for probe characteristics automatically during calibration by a National Laboratory (with a residual non-linearity better than 0.001°C).

Other key performances are:

- Long-term drift < 0.001°C +7ppm of Rdg (per year)

- Short-term stability (jitter) < 0.5 digit ( = 0.00005°C)

- Temperature coefficient < 0.5 ppm/°C (max.)

 

 

 

 

 

 

 

Technical specifications

 

 

 

 

 

q  Accuracy

 

Accuracy (after calibration at two fixed points)

0.001°C

 

 

 

 

q  Measurement range

 

Temperature measurement range

-100°C to +100°C (-148°F to +212°F)

Other possible ranges:

§    -100°C to +200°C

§    or  -50°C to +300 °C

Calibrator range

0 to 138.5 W

 

 

 

 

q  Connection between probe and thermometer

 

Probe type

“strain free” Pt100, ITS-90

alpha 1.385 or 1.3926

Optionally: Pt25

Measurement current

1 mA DC

Connection

4-wire shielded cable

Lead wire effect

0.00001°C/W (10W per lead)

NMRR

> 120 dB (at 50 Hz and above)

CMRR

> 140 dB (from 0 to 60 Hz)

 

 

 

 

q  Resolution

 

Thermometer resolution

0.0001°C

Calibrator resolution

0.0002W (692,500 points)

 

 

 

 

q  Probe linearization

 

Linearization characteristics

Based on ITS-90

Self-adaptative & automatic

Residual non-linearity

< 0.001°C

 

 

 

 

q  Stability performances

 

Long-term drift

< 0.001°C +7ppm of Rdg (per year)

Short-term stability (jitter)

0.5 LSD ( = 0.00005°C)

 

 

 

 

q  Auto-zero

 

Auto-zero residual

< 0.0001°C/°C (at the 0°C point)

 

 

 

 

q  Temperature coefficient

 

Temperature coefficient

< 0.5 ppm/°C (max.)

 

 

 

 

q  Warm-up

 

Warm-up time

1 min. for optimum accuracy

 

 

 

 

q  Adjustment

 

Adjustment of system Zero & Full-Scale

By means of 3 front-panel keys

 

 

 

 

q  Display

 

Display

Easy-to read display with 7 digits

14.2 mm red LEDs

 

 

 

 

q  Communication

 

Communication

RS232 serial mode (ASCII-characters) , isolated command circuit

Optionally: JBUS

 

 

 

 

q  Power

 

Power

110-220VAC,  50-60Hz,  1W

 

 

 

 

q  Physical characteristics

 

Case

Extruded aluminium case (EMC)

Full electrical continuity

Version

Laboratory version

(4 feet inc. 2xtip-up feet)

Dimensions

9.1" x 3.3" x 7.5" (inches)

(mm: 230 x 85 x 190 )

Weight

4.4 lb (2 kg)

 

 

 

 

q  Environmental conditions

 

Operating temperature range

0 to 50°C