` RIO4000 RTD Module
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RIO4000 RTD ModuleAlpha Controls & Instrumentation Inc.

Meriam Process Technologies

RIO4000 RTD Module

Measures or simulates the resistance of RTD sensors for the Meriam MFT4000 multifunction calibrator


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The RIO4000 is the RTD measure and simulate module for the Meriam MFT 4000 Series Multi-Function Tester. The module accurately measures or simulates the resistance of 22 different RTD sensor types with nominal resistance to 4000 Ω. 2-, 3-, and 4-wire RTD Measurement for various RTD types; platinum, copper, nickel or iron. The module can simulate temperature to all conventional or smart temperature transmitters and signal conditioners.

The RIO4000 is available with the required RTD starter kit (ZA37063), which includes a measure cable (to connect the RIO4000 module to RTD wires/transmitter terminals), RTD mating connector (to connect RTD), and 2-wire simulation cable.

• Simulates temperature to various transmitters, including conventional, smart, and signal conditioners
• Supports various RTD types including platinum, copper, nickel, and iron
• User-selectable temperature units including °C, °F, K, and °R

0 - 400 Ω Measurement Accuracy ± 0.01% of R + 0.075 Ω
0 - 400 Ω Simulation Accuracy See RIO4000 Accuracy Table
400 - 4000 Ω Measurement Accuracy ± 0.01% of R + 0.237 Ω
400 - 4000 Ω Simulation Accuracy See RIO4000 Accuracy Table
Resistance Range 0 – 4000 Ω
Input impedance > 10 MΩ
Mating Connector Switchcraft #TA6FL Pulsed excitation current support
Units °F, °C, °R, °K, Ω
Storage Temperature -40°C - 60°C (-40°F - 140°F)
Operating Temperature -10°C - 50°C (14°F - 122°F)
Temperature Effect ≤ 0.001 Ω/°C
Resolution ± 0.1° or ± 1° for RTDs
Weight 3 oz
Certifications Available CE Mark (standard)
NIST traceability certificate (standard)
Intrinsically Safe, MET Laboratories per CSA C22.2 & UL Class I Division I (standard)

Table 1: Supported RTD Materials / Nominal Resistance

Material

R0

ALPHA

Rs (ID)

Temperature Range

Platinum

25.5

0.00392

17.8

-200°C - 630°C

98.129

0.00392

21.5

-200°C - 600°C

100

0.00385

100

-200°C - 850°C

100

0.00392

46.4

-200°C - 630°C

100

0.00391

56.2

-200°C - 630°C

100

0.00393

68.1

-200°C - 850°C

100

0.00389

82.5

-200°C - 630°C

200

0.00385

178

-200°C - 630°C

200

0.00392

215

-200°C - 630°C

470

0.00392

261

-200°C - 630°C

500

0.00392

316

-200°C - 630°C

500

0.00391

383

-200°C - 630°C

500

0.00385

464

-200°C - 630°C

1000

0.00385

1000

-200°C - 630°C

1000

0.00375

1210

-50°C - 500°C

Copper

9.035

0.00427

12.1

-100°C - 260°C

100

0.00427

121

-100°C - 260°C

Nickel

100

0.00618

31.6

-60°C - 160°C

120

0.00672

147

-80°C - 260°C

Iron

604

0.00518

562

-100°C - 200°C

908.4

0.00527

681

-100°C - 200°C

1816.81

0.00527

1470

-100°C - 200°C

Table 2: RIO4000 Accuracy

 

Operating Temperature 18 < T < 28°C*

RTD Type

(α)

Temperature Range

Measure (2, 3, 4 wire)

Simulate (2 wire**)

Pt100

385

-200°C - 0°C

0.3

0.3

0°C - 400°C

0.4

0.4

400°C - 850°C

0.5

0.6

389, 391

-200°C - 0°C

0.3

0.4

0°C - 360°C

0.4

0.6

392

-200°C - 0°C

0.4

0.4

0°C - 360°C

0.5

0.6

393

-200°C - 0°C

0.5

0.4

0°C - 400°C

0.4

0.5

400°C - 850°C

0.6

0.6

Pt200

385, 392

-200°C - 0°C

0.2

0.4

0°C - 400°C

0.6

0.5

400°C - 630°C

0.8

0.6

Pt500

385, 392

-200°C - 0°C

0.2

0.4

0°C - 400°C

0.3

0.5

400°C - 630°C

0.4

0.6

391

-200°C - 0°C

0.2

0.4

0°C - 400°C

0.4

0.5

400°C - 630°C

0.5

0.6

Pt1000

385

-200°C - 0°C

0.2

0.4

0°C - 400°C

0.3

0.5

400°C - 630°C

0.4

0.6

375

-50°C - 0°C

0.3

0.4

0°C - 500°C

0.3

0.5

Cu10

4274

-100°C - 0°C

2

2

0°C - 260°C

2

2

Cu100

4274

-100°C - 0°C

1

1

0°C - 260°C

1

1

Ni100

618

-60°C - 160°C

0.2

0.4

Ni120

672

-80°C - 260°C

0.2

0.4

Fe604

518

-100°C - 200°C

0.3

0.5

Fe908

527

-100°C - 200°C

0.3

0.5

Fe1816

527

-100°C - 200°C

0.2

0.5

 

Ambient temperature limits: -10°C -50°C

Accuracy statements are for ambient temperatures of 18°C - 28°C

Apply the Temperature Coefficient for ambient temperatures below 18°C and above 28°C

 

*Temperature Coefficient = 0.02°C/°C

** For 2-Wire Simulation, Manufacturer’s 2 Wire Simulation Cable is Required. Note: Simulation Accuracies hold true on Pulsed Type Transmitters when they are placed in “Active Calibration” mode, or a similar continuous mode. Consult factory for more detail.



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