7050 Process and Thermocouple Calibrator

Product Description:

The 7050 multifunction process calibrator combines the essential functions of measurement and simulation of volts, millivolts, milliamps, and ohms with the direct readout simulation of thermocouples and RTD’s in °C or °F units.The instrument is microprocessor based and housed in a rugged case designed for use in the field. Input and Output functions are displayed simultaneously and the switch controls allow for easy and precise operation.

 

Five calibration points are instantaneously accessible through a preset percentage selector and all functions may be generated in a fully programmable ramp format.In addition to the standard calibration facilities the instrument may be used as a signal converter. Any electronic input signal can be converted and output as a proportional signal of 4-20mA, 0-5V or sq. root 4-20mA.

 

The 7050 is highly adaptable, IPT 68 and ITS 90 curves are accommodated and non-standard thermocouples and RTD’s may be programmed on request.

 

Technical Specification:

INPUT

VOLTAGE

RANGE RESOLUTİON     ACCURACY

40V       1mV      0.03%

4V         100μV   0.03%

400mV 10µV     0.03%

40mV    1µV       0.03%

CURRENT

RANGE RESOLUTİON     ACCURACY

400mA 10μA     0.03%

40mA    1μA       0.03%

4-20mA/0-100%             0.01%   0.06%

RESİSTANCE

RANGE RESOLUTİON     ACCURACY

40000Ω 1Ω         0.03%

4000Ω  0.1Ω      0.03%

400Ω     0.01Ω   0.06%

OUTPUT

VOLTAGE

RANGE RESOLUTİON     ACCURACY

-2 to +10V          1mV      0.06%

-100mV to +400mV        10μV     0.03%

-10mV to +40mV            1µV       0.03%

Output Impedance: < 10Ω

 

CURRENT

RANGE RESOLUTİON     ACCURACY

0 to 20mA          10μA     0.03%

4 to 20mA          1μA       0.03%

TX Sim (4 to 20mA)        0.01%   0.03%

Max Load Resistance: 900Ω at 20mA, Open circuit voltage 18- 27V

 

RESİSTANCE

RANGE RESOLUTİON     ACCURACY

0 to 400Ω           0.01Ω   ± 0.03%

Excitation Current 0.2 to 2mA

 

Other Specifications: Loop drive supply: Nominal 24V, current limit set to 30mA

 

Process Signal and Temperature Measurement & Simulation

TEMPERATURE

THERMOCOUPLE TYPE  TEMP RANGE °C              ACCURACY °C

J             -210 to 0

0 to 710

710 to 1200       ± 0.4

± 0.2

± 0.9

K            -270 to -240

-240 to -180

-180 to -50

-50 to 960

960 to 1370       ± 3.0

± 1.2

± 0.5

± 0.3

± 1.7

T            -270 to -250

-250 to -180

-180 to -100

-100 to 400        ± 3.0

± 1.0

± 0.5

± 0.2

R            -50 to 0

0 to 70

70 to 400

400 to 1000

1000 to 1760     ± 3.0

± 2.0

± 1.5

± 1.0

± 0.8

S            -50 to 0

0 to 100

100 to 450

450 to 1760       ± 2.5

± 1.8

± 1.3

± 0.9

B            200 to 400

400 to 1000

1000 to 1820     ± 5.0

± 2.0

± 1.0

N           0 to 330

330 to 1100

1100 to 1300     ± 0.4

± 0.3

± 1.5

E            -230 to 0

0 to 540

540 to 1000       ± 0.5

± 0.2

± 1.5

RTD –

 

PT100

RANGE °C           ACCURACY °C

-200 to 850        ± 0.3

Thermocouple  Linearisation to BS 4937. ITS 90 or IPTS68 selectable.

Pt100    Linearisation to BS1904 (1984).DIN43760 (1980). Linearisation Acc: 0.1% of reading for Class A, 38.5Ω F.I

Excitation current          0.5mA (Input), 200μA to 2mA (Output).

CJC        External (Pt100), Internal, Ice point. Accuracy +/-0.2°C at 23°C

Ramp    Fully programmable continuous and stepped

Steps    5 Steps with fully adjustable zero

Transmitter       Tx function 4-20mA

Signal Converter             Any input to any output

Dual Readout    Measure and source simultaneously displayed

Stability              100ppm per °C range 0 to 40°C

Displays             LCD Dot Matrix, 1 line by 20 charx12mm, alphanumeric.

Dimensions / Weight     W270 x H175 x D250mm, weight 4.5kg

Optional Extras Calibration Certificates traceable to NPL and UKAS