novus TxMini-M12 Compact Temperature Transmitter User Guide

: September 12, 2024
: Novus

TxMini-M12 Compact Temperature Transmitter

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Specifications

Model: TXMINI-M12
User Guide Version: V1.0x K

Product Information

1. Introduction

Thank you for choosing the TxMini-M12 transmitter. This user
guide will help you understand how to install, configure, and use
the transmitter effectively.

2. Specifications

2.1 Accuracy

The accuracy of the TxMini-M12 transmitter is detailed in the
specifications provided by the manufacturer.

2.2 Measurement Range

The TxMini-M12 transmitter has a specified measurement range
which should be adhered to for accurate readings.

3. Mechanical Installation

Follow the mechanical installation instructions provided in this
user guide to ensure proper mounting and positioning of the
transmitter.

4. Electrical Installation

Proper electrical installation is crucial for the optimal
functioning of the TxMini-M12 transmitter. Ensure you follow the
recommendations provided in this section.

4.1 Installation Recommendations

Refer to the installation recommendations for best practices
when setting up the transmitter.

4.2 Power Supply and Communication Connection

Connect the TxMini-M12 transmitter to the power supply and
communication devices as instructed in this section.

4.3 Sensor Connection

Instructions on how to connect sensors to the TxMini-M12
transmitter can be found here.

4.4 M12 Cable Connection

Details on how to properly connect the M12 cable to the
TxMini-M12 transmitter are provided in this section.

5. Configuration

Learn how to configure the TxMini-M12 transmitter using factory
settings, a TxConfig-M12 device, or Signow software.

5.1 Factory Settings

Instructions on restoring the transmitter to factory settings
can be found here.

5.2 Using a TxConfig-M12

Utilize a TxConfig-M12 device for configuring the settings of
the transmitter.

5.3 Signow Software

Use Signow software for advanced configuration of the TxMini-M12
transmitter.

5.3.1 Connecting the Device to Your Computer

Follow these steps to establish a connection between the
transmitter and your computer using Signow software.

5.3.2 Configuration Section

Navigate through the configuration section of the Signow
software to adjust specific settings of the transmitter.

5.3.3 Diagnostic Section

Access the diagnostic section in the Signow software for
troubleshooting and monitoring the performance of the TxMini-M12
transmitter.

FAQ

Q: How do I reset the TxMini-M12 transmitter to factory

settings?

A: To reset the transmitter to factory settings, follow the
instructions provided in section 5.1 of this user guide.

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TXMINI-M12 TRANSMITTER
USER GUIDE V1.0x K

TxMini-M12

INTRODUCTION………………………………………………………………………………………………………………………………………………………………………3

SPECIFICATIONS ……………………………………………………………………………………………………………………………………………………………………4

2.1

ACCURACY……………………………………………………………………………………………………………………………………………………………..4

2.2

MEASUREMENT RANGE………………………………………………………………………………………………………………………………………….4

MECHANICAL INSTALLATION………………………………………………………………………………………………………………………………………………….5

ELECTRICAL INSTALLATION …………………………………………………………………………………………………………………………………………………..6

4.1

INSTALLATION RECOMMENDATIONS………………………………………………………………………………………………………………………6

4.2

POWER SUPPLY AND COMMUNICATION CONNECTION…………………………………………………………………………………………..6

4.3

SENSOR CONNECTION …………………………………………………………………………………………………………………………………………..6

4.4

M12 CABLE CONNECTION……………………………………………………………………………………………………………………………………….6

CONFIGURATION ……………………………………………………………………………………………………………………………………………………………………7

5.1

FACTORY SETTINGS……………………………………………………………………………………………………………………………………………….7

5.2

USING A TXCONFIG-M12 …………………………………………………………………………………………………………………………………………7

5.3

SIGNOW SOFTWARE ………………………………………………………………………………………………………………………………………………7

5.3.1 CONNECTING THE DEVICE TO YOUR COMPUTER………………………………………………………………………………………8

5.3.2 CONFIGURATION SECTION…………………………………………………………………………………………………………………………9

5.3.3 DIAGNOSTIC SECTION ……………………………………………………………………………………………………………………………….9

5.4

SIGNOW APP…………………………………………………………………………………………………………………………………………………………10

5.4.1 CONNECTING THE DEVICE TO YOUR SMARTPHONE ………………………………………………………………………………..10

5.4.2 RUNNING THE APP……………………………………………………………………………………………………………………………………10

OPERATION ………………………………………………………………………………………………………………………………………………………………………….12

WARRANTY …………………………………………………………………………………………………………………………………………………………………………..13

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TxMini-M12
1. INTRODUCTION
TxMini-M12 Transmitter is a two-wire 4-20 mA type temperature transmitter powered by the current loop. To configure it, you must use the SigNow software or app. The output current is linearized according to the signal applied to the transmitter input and adjusted according to the configured scale.

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TxMini-M12

2. SPECIFICATIONS

FEATURES

TXMINI-M12

Sensor input

Configurable. The accepted sensors are listed in Table 2, with their respective maximum measurement ranges.
Pt100: 3-wire type, 0.8 mA excitation, = 0.00384, according to NBR 13773. IEC 60751 (ITS-90). Pt1000: 3-wire type, 0.8 mA excitation, = 0.00384, according to NBR 13773. IEC 60751 (ITS-90). To use 2-wire Pt1000, connect terminals 3 and 4.

Time between energizing and < 2.5 s.

stabilizing the measurement

Accuracy is only guaranteed after 15 minutes.

Reference conditions

Environment: 25 °C (77 °F). Power supply: 24 V. Load: 250 . Stabilization time: 15 minutes.

Temperature influence

< ± 0.2 % / 25 °C (77 °C).

Response time

Typically, 1.6 s.

Maximum acceptable voltage at the input terminals on the sensor

3 V.

RTD Current

800 µA.

Effect of RTD cable resistance

0.005 °C / .

Maximum admissible resistance of RTD cable

25 .

Power supply influence

0.006 % / V typically (maximum range percentage).

Output

4-20 mA or 20-4 mA current, 2-wire type. Linear in relation to the temperature measured by the selected sensor.

Output resolution

2 µA.

Power supply

8 to 35 Vdc.

Maximum load (RL)

RL (max.) = (Vdc 8) / 0.02 []. Where: Vdc = Power supply in Volts (from 8 to 35 Vdc).

Operating temperature

-40 to 85 °C (-40 to 185 °F).

Environment humidity

0 to 90 % RH.

Wire size used:

0.14 to 1.5 mm².

Recommended torque

0.8 Nm.

Housing

Polyamide.

No electrical isolation between input and output.

Internal protection against reversal polarity of voltage supply.

Table 1 Technical specifications

2.1 ACCURACY

SENSOR TYPE

TYPICAL ACCURACY MINIMUM ACCURACY

Pt100 / Pt1000

0.1 %

0.2 %

Table 2 Calibration error and measurement range percentages

2.2 MEASUREMENT RANGE

SENSOR TYPE MAXIMUM MEASUREMENT RANGE MINIMUM MEASUREMENT RANGE

Pt100

-200 to 650 °C (-328 to 1202 °F)

40 °C (104 °F)

Pt1000

-200 to 650 °C (-328 to 1202 °F)

40 °C (104 °)

Table 3 Sensors accepted by the transmitter

Order codes: · P/N: 8816021079: TxConfig-M12 Interface. · P/N: 8806065000: PVC sensor cable / 1 m / 4 positions / with M12 female connector (accessory). · P/N: 8806065100: PVC sensor cable / 3 m / 4 positions / with M12 female connector (accessory).

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TxMini-M12
3. MECHANICAL INSTALLATION
TxMini-M12 Transmitter is suitable for installation in pipes and in places with limited space. Vibrations, excessive humidity and temperature, electromagnetic interference, high voltage, and other interference can permanently damage the transmitter and cause errors in the measured value.
Figure 1 Dimensions

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TxMini-M12

4. ELECTRICAL INSTALLATION
· The terminal housing is made of polyamide. · Wire size used: 0.14 to 1.5 mm².

4.1 INSTALLATION RECOMMENDATIONS
· Input signal conductors should run through the plant separate from output and supply conductors. If possible, in grounded conduits. · The power supply for electronic instruments must come from a network specific to the instrumentation. · In control applications, it is essential to consider what can happen when any part of the system fails. · It is recommended to use RC FILTERS (noise suppressors) in contactor coils, solenoids, etc.

4.2 POWER SUPPLY AND COMMUNICATION CONNECTION

Terminal 2 is used to configure communication with the transmitter (use the TxConfig-M12 Configuration Interface). Terminal 4 is used to configure the connection to the cable mesh (if necessary).

1 2 3 4
Table 4 Power supply

LOOP + COMM LOOP SHIELD

4.3 SENSOR CONNECTION
Terminals 1, 2, and 3 are used to connect the sensor. Terminals 1 and 2 must be connected, as shown in the figure below:

Figure 2 Pt100 / Pt1000 3-wire input
4.4 M12 CABLE CONNECTION
Below are the guidelines for making or purchasing a M12 cable:

PIN WIRE COLOR FUNCTION

1

Brown

Vdc

2

Black

D+

3

White

GND

4

Blue

D-

Table 5 Pins

Figure 3 M12 cable
For correct compensation of the RTD cable resistances, they must be equal at all terminals and must not exceed 25 per cable. To guarantee these conditions, it is recommended to use 3 or 4-wire cable of the same length and gauge (the cable is not supplied).

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TxMini-M12
5. CONFIGURATION
The factory setting of the transmitter is for a Pt100 input with a range of 0 to 100 °C (32 to 212 °F) and output for maximum current in case of error. When using the transmitter with this setting, no further commissioning is required. In this case, its installation can be carried out immediately. When it is necessary to change the configuration of the device, you must use the SigNow software or app. To configure the device using the software, connect the TxConfig-M12 Configuration Interface (purchased from the manufacturer or its authorized representatives) to the USB port of the computer used and run SigNow (see CONNECTING THE DEVICE TO YOUR COMPUTER section). To configure the device using the app, you must use an OTG cable with the TxConfig-M12 Configuration Interface and then run the app and proceed with the recognition process (see CONNECTING THE DEVICE TO YOUR SMARTPHONE section).
The TxConfig-M12 interface is NOT electrically isolated from the input transmitter.
5.1 FACTORY SETTINGS
TxMini-M12 has the following factory settings: · 3-wire Pt100 sensor, range 0 to 100 °C (32 to 212 °F). · Maximum output for sensor failure. · Zero correction: 0 °C (32 °F). · Unit: °C. · Output: 4 to 20 mA. In the purchase order, it is possible to define a specific setting.
5.2 USING A TXCONFIG-M12
To change the configuration of your TxMini-M12, you must use the SigNow software or app. To configure the device using the software, connect the TxMini-485 to a TxConfig-M12 and then connect the TxConfig-M12 to the USB port on the computer being used. To configure the device using the app, you also need to use an OTG cable with the TxConfig-M12. When connected to the USB port of the TxConfig-M12, the OTG cable (the other end must be inserted into the USB port of the smartphone) will allow you to connect the device to your smartphone. After this, you must run the SigNow app and proceed with the recognition process (see CONNECTING THE DEVICE TO YOUR SMARTPHONE section).
The transmitter has no electrical insulation between input and output.
5.3 SIGNOW SOFTWARE
SigNow software is the main tool for configuring and analyzing data from TxMini-M12. To install it, simply run the SigNowSetup.exe file and proceed with the configuration. The software and its respective manual can be downloaded for free in the Download Area of our website www.novusautomation.com. This manual describes the generic functionalities of SigNow. For more specific instructions on how to operate certain tools, check the specific user guide.

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TxMini-M12
5.3.1 CONNECTING THE DEVICE TO YOUR COMPUTER
Once the TxConfig-M12 has been connected to the TxMini-M12, connect the transmitter to the computer’s USB port and run SigNow, which will display the following screen:
Figure 4 Home screen
To establish a communication, click on Configuration USB:
Figure 5 USB

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5.3.2 CONFIGURATION SECTION
By clicking on the General tab, you can configure the device:

TxMini-M12

Figure 6 Configuration Section
The bottom part of the screen displays information about the device, such as name, serial number, and firmware version. 1. Sensor type: Allows you to select the type of sensor to be used. 2. Temperature unit: Allows you to set the temperature unit to be used. 3. Lower limit: Allows you to set the minimum limit for the measurement range. 4. Upper limit: Allows you to set the maximum limit for the measurement range. 5. Output status (Sensor failure): Allows you to establish the behavior of the output when the transmitter indicates a failure. 6. Output type: Allows you to set the type of output to be used. 7. Zero correction: Allows you to correct small deviations in the transmitter output that happen, for example, when the sensor is changed.
5.3.3 DIAGNOSTIC SECTION
By clicking on the Diagnostic tab, you can view the diagnostic data:

Figure 7 Diagnostic section
You can also access the Diagnostic section by clicking on the Diagnostic tab, located on the left of the configuration screen.

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5.4 SIGNOW APP
The SigNow app is the ideal tool for using the TxMini-M12 on a daily basis. Available for Android smartphones, it is always easily accessible for monitoring or configuring the device. SigNow can be downloaded for free from Google Play Store.
5.4.1 CONNECTING THE DEVICE TO YOUR SMARTPHONE
Android smartphones with On the Go (OTG) technology can be directly connected to the device via the USB port. Using the TxConfig-M12 Configuration Interface, TxMini-M12 can be recognized and configured when running the SigNow app. To do this, you need to observe how to connect the OTG cable to the device:
Figure 8 OTG Cable
1. If you position the cable end incorrectly, it is possible that the device will not be recognized by the app. 2. iOS smartphones are not compatible with the OTG cable.
5.4.2 RUNNING THE APP
When using an OTG cable and a TxConfig-M12 to connect the device to the smartphone and run the SigNow app (see CONNECTING THE DEVICE TO YOUR SMARTPHONE section), you must first approve the use of the TxConfig-M12, which will act as an intermediary for the connection:

Figure 9 Using a TxConfig-M12

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After that, the app will recognize the device and show the main screen:

TxMini-M12

Figure 10 Main screen
To configure the device, simply click on the Configuration button to display the main screen of the Configuration section:

Figure 11 Information screen
It displays information about the device, such as its name, serial number and firmware version. When you open the Config section, you can configure the parameters displayed in the CONFIGURATION SECTION. By clicking on Diagnostic, you will be able to view information about the transmitter, according to the DIAGNOSTIC SECTION. Apart from the particularities of the connection mode, the parameters and division of information are the same as in the SigNow software. More specific information about the application’s buttons can be found in the SigNow manual, available on NOVUS website.

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TxMini-M12
6. OPERATION
You can use SigNow software or app to change the sensor Offset. The USB connection can be made even when the transmitter is connected to the process and operating, without causing errors in the measurement. You must choose the sensor and range best suited to your process. The chosen range must not exceed the maximum measurement range defined for the sensor and must not be smaller than the minimum range for the same sensor. It is important to note that even when setting an intermediate range, the transmitter’s accuracy is always based on the maximum range of the sensor used. Example: · If the Pt100 sensor is in the maximum range of -200 to 650 °C and the accuracy is 0.2 %, there will be a maximum error of up to 1.7 °C (0.2 %
of 850 °C). · This error does not necessarily decrease as the range configured for the sensor narrows (e.g. 0 to 100 °C). Note: When checking or calibrating the transmitter, check that the Pt100 excitation current required by the calibrator is compatible with the Pt100 excitation current used in this instrument: 0.8 mA.

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7. WARRANTY
Warranty conditions are available on our website www.novusautomation.com/warranty.

TxMini-M12

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