Thermocouple / Millivolt Modules

Mvt-11b Thermocouple / Millivolt Module for the XR440 Data Logger

Mvt-11b Thermocouple / Millivolt Module

Seven Millivolt modules enable the XR440 Data Logger to read a millivolt signal on channel 3.  Three modules (Mvt-11b, Mvt-22b, Mvt-50u) accept a thermocouple (Type J, K, N, R, S, T, B, C, or E).  A built-in precision thermistor on channel 1 provides ambient temperature readings and thermocouple cold junction compensation.  An Mvt module configures the XR440 as follows:  Ambient temperature on channel 1.  Millivolt (or thermocouple) signal on channel 3.  Channels 2 and 4 are 'Standard' channels and will accept Pace sensors, 0-5 Vdc or resistive signals.  The Mvt-20u, Mvt-100u, Mvt-107b and Mvt-500u do not accept a Thermocouple.

Mvt Modules - Common Specifications

Operating Temperature -40°C to 60°C (-40°F to 140°F)
Size 1.61" wide x 0.75" deep x 0.55" high (41mm x 19mm x 14mm)
Overall Size with XR440 Data Logger Adds 0.35" (9mm) to XR440's overall length, no change to XR440's height and width
Thermistor Sensor ±0.1°C interchangeability, 0-70°C
Input Type Single ended, (-) terminal is internally connected to dc ground
Input Impedance Greater than 10 M ohm

Note: The last letter of the model number ('u' or 'b') signifies unipolar or bipolar input.

Electrical Specifications

Model Mvt-11b Mvt-22b Mvt-20u Mvt-50u Mvt-100u Mvt-107b Mvt-500u
Range ±11 mV ±22 mV 0-20 mV 0-50 mV 0-100 mV ±107 mV 0-500 mV
Resolution
( 12 bit )
12 uV 24 uV 5 uV 12 uV 24 uV 120 uV 120 uV
Offset Voltage 200 uV max. 200 uV max. 5 uV max. 5 uV max. 5 uV max. 200 uV max. 5 uV max.
Offset Voltage Drift 2 uV/ °C max. 2 uV/ °C max. 0.05 uV/ °C max. 0.05 uV/ °C max. 0.05 uV/ °C max. 2 uV/ °C max. 0.05 uV/ °C max.
Accepts Thermocouple Yes Yes No Yes No No No
System Accuracy 0.8% of F.S. 0.8% of F.S. 0.4% of F.S. 0.4% of F.S. 0.4% of F.S. 0.8% of F.S. 0.4% of F.S.

Part Numbers:  (7 models)  Mvt-11b, Mvt-22b, Mvt-107b, Mvt-20u, Mvt-50u, Mvt-100u, Mvt-500u

Price:  (any model)  $130.


Thermocouple Specifications for Mvt-11b, Mvt-22b, and Mvt-50u

Mvt-11b Thermocouple Specifications

Type Min. Temperature Max. Temperature Approx. Resolution
J -130°C (-202°F) 200°C (392°F) 0.2°C (0.4°F)
K -250°C (-418°F) 270°C (518°F) 0.3°C (0.5°F)
N -50°C (-58°F) 340°C (644°F) 0.3°C (0.5°F)
R 0°C (32°F) 1030°C (1886°F) 0.8°C (1.4°F)
S 0°C (32°F) 1120°C (2048°F) 1.0°C (1.8°F)
T -200°C (-328°F) 230°C (446°F) 0.2°C (0.4°F)
B 0°C (32°F) 1570°C (2858°F) 1.0°C (1.8°F)
C 0°C (32°F) 620°C (1148°F) 0.6°C (1.1°F)
E -100°C (-148°F) 160°C (320°F) 0.15°C (0.3°F)

 

Mvt-22b Thermocouple Specifications

Type Min. Temperature Max. Temperature Approx. Resolution
J -130°C (-202°F) 400°C (752°F) 0.4°C (0.7°F)
K -250°C (-418°F) 530°C (986°F) 0.6°C (1.1°F)
N -50°C (-58°F) 630°C (1166°F) 0.6°C (1.1°F)
R 0°C (32°F) 1760°C (3200°F) 1.6°C (2.9°F)
S 0°C (32°F) 1760°C (3200°F) 2.0°C (3.6°F)
T -200°C (-328°F) 400°C (752°F) 0.4°C (0.7°F)
B 0°C (32°F) 1820°C (3308°F) 2.0°C (3.6°F)
C 0°C (32°F) 1210°C (2210°F) 1.2°C (2.2°F)
E -100°C (-148°F) 310°C (590°F) 0.3°C (0.5°F)

Mvt-50u Thermocouple Limitation

The Mvt-50u must be set (in Pocket Logger Software) to read either high or low temperatures.  When set for high temperatures, the low temperature limit is the ambient temperature of the Mvt Module.  When set for low temperatures, the high temperature limit is the ambient temperature of the Mvt Module.  The Mvt-11b and Mvt-22b do not have this limitation.

Mvt-50u Thermocouple Specifications

Type Min Temp Max Temp Approx. Resolution
J Ambient* 760°C (1400°F) 0.2°C (0.4°F)
K Ambient* 1220°C (2228°F) 0.3°C (0.5°F)
N Ambient* 1300°C (2372°F) 0.3°C (0.5°F)
R Ambient* 1760°C (3200°F) 0.8°C (1.4°F)
S Ambient* 1760°C (3200°F) 1.0°C (1.8°F)
T Ambient* 350°C (662°F) 0.2°C (0.4°F)
B Ambient* 1820°C (3308°F) 1.0°C (1.8°F)
C Ambient* 2320°C (4208°F) 0.6°C (1.1°F)
E Ambient* 660°C (1220°F) 0.15°C (0.3°F)
J 'low' -130°C (-202°F) Ambient* 0.2°C (0.4°F)
K 'low' -250°C (-418°F) Ambient* 0.3°C (0.5°F)
N 'low' -50°C (-58°F) Ambient* 0.3°C (0.5°F)
T 'low' -200°C (-328°F) Ambient* 0.2°C (0.4°F)
E 'low' -100°C (-148°F) Ambient* 0.15°C (0.3°F)

*Ambient temperature of Mvt-50u

PT450 Thermocouple Probe

XR440 Data Logger

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