Mvt modules enable the XR440 and XR450 Data Loggers to accept a millivolt or thermocouple input on channel 3. The Mvt-20u, Mvt-100u, Mvt-107b and Mvt-500u are used solely for mV inputs but three modules (Mvt-11b, Mvt-22b, Mvt-50u) can be used for mV or thermocouple inputs (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 logger 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, 0-5vDC or resistive signals.
The MVT modules will configure the Pace Scientific Pocket Logger as follows:
Channel 1: Ambient Temperature.*
Channel 3: MilliVolt or Thermocouple Input.
Channels 2 and 4: ‘Standard’ channels, suitable for any Pace sensors, 0-5vDC or resistive inputs.
*A built-in, precision thermistor provides ambient temperature readings and cold junction compensation for thermocouple inputs.
| Operating Temperature: | -40 to 60°C (-40 to 140°F) |
| Module Size: | 41mm wide x 19mm deep x 14mm high |
| Overall Size with XR440: | Adds 9mm to loggers overall length, no change to 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.
| 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 µV | 24 µV | 5 µV | 12 µV | 24 µV | 120 µV | 120 µV |
| Offset Voltage | 200 µV max. | 200 µV max. | 5 µV max. | 5 µV max. | 5 µV max. | 200 µV max. | 5 µV max. |
| Offset Voltage Drift | 2 µV/ °C max. | 2 µV/ °C max. | 0.05 µV/ °C max. | 0.05 µV/ °C max. | 0.05 µV/ °C max. | 2 µV/ °C max. | 0.05 µV/ °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. |
| 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) |
| 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 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
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-100U
£132.28
MVT100U Millivolt Input Module for the XR440 Pocket Logger. MVT Module converts the 4 input channels as follows: Channel 1: Precision thermistor for ambient temperature or CJC readings; Channels 2 & 4: Standard Inputs (0-5vDC, Pace Sensors or resistive inputs); Channel 3: mV Inputs, mV Range: 0-100mV with a 24µV resolution. Module adds 9mm to overall length of an XR440.
MVT-107B
£132.28
MVT107B Millivolt Input Module for the XR440 Pocket Logger. MVT Module converts the 4 input channels as follows: Channel 1: Precision thermistor for ambient temperature or CJC readings; Channels 2 & 4: Standard Inputs (0-5vDC, Pace Sensors or resistive inputs); Channel 3: mV Inputs, mV Range: ±107mV with a 120µV resolution. Module adds 9mm to overall length of an XR440.
MVT-11B
£132.28
MVT11B Thermocouple / Millivolt Input Module for the XR440 Pocket Logger. MVT Module converts the 4 input channels as follows: Channel 1: Precision thermistor for ambient temperature or CJC readings; Channels 2 & 4: Standard Inputs (0-5vDC, Pace Sensors or resistive inputs); Channel 3: mV or Thermocouple Inputs, mV Range: ±11mV with a 12µV resolution. Thermocouple Input suitable for Type J, K, N, R, S, T, B, C, E Thermocouples. Module adds 9mm to overall length of an XR440.
MVT-20U
£132.28
MVT20U Millivolt Input Module for the XR440 Pocket Logger. MVT Module converts the 4 input channels as follows: Channel 1: Precision thermistor for ambient temperature or CJC readings; Channels 2 & 4: Standard Inputs (0-5vDC, Pace Sensors or resistive inputs); Channel 3: mV Inputs, mV Range: 0-20mV with a 5µV resolution. Module adds 9mm to overall length of an XR440.
MVT-22B
£132.28
MVT22B Thermocouple / Millivolt Input Module for the XR440 Pocket Logger. MVT Module converts the 4 input channels as follows: Channel 1: Precision thermistor for ambient temperature or CJC readings; Channels 2 & 4: Standard Inputs (0-5vDC, Pace Sensors or resistive inputs); Channel 3: mV or Thermocouple Inputs, mV Range: ±22mV with a 24µV resolution. Thermocouple Input suitable for Type J, K, N, R, S, T, B, C, E Thermocouples. Module adds 9mm to overall length of an XR440.
MVT-500U
£132.28
MVT500U Millivolt Input Module for the XR440 Pocket Logger. MVT Module converts the 4 input channels as follows: Channel 1: Precision thermistor for ambient temperature or CJC readings; Channels 2 & 4: Standard Inputs (0-5vDC, Pace Sensors or resistive inputs); Channel 3: mV Inputs, mV Range: 0-500mV with a 120µV resolution. Module adds 9mm to overall length of an XR440.
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