Time Electronics 7050 Process and Thermocouple Calibrator

 

Teknik Doküman

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.

Product Specification:

Voltage / Current / Resistance Generation and Measure

INPUT

Voltage
Range Resolution Accuracy
40V 1mV 0.03%
4V 100μV 0.03%
400mV 10µV 0.03%
40mV 1µV 0.03%
Current
Range Resolution Accuracy
400mA 10μA 0.03%
40mA 1μA 0.03%
4-20mA/0-100% 0.01% 0.06%
Resistance
Range Resolution Accuracy
40000Ω 0.03%
4000Ω 0.1Ω 0.03%
400Ω 0.01Ω 0.06%

 

OUTPUT

Voltage
Range Resolution Accuracy
-2 to +10V 1mV 0.06%
-100mV to +400mV 10μV 0.03%
-10mV to +40mV 1µV 0.03%

Output Impedance: < 10Ω

Current
Range Resolution 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 

Resistance
Range Resolution 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