Novus TXMINI-M12 User Manual

TXMINI-M12 / TXMINI TRANSMITTER
USER GUIDE – V1.0x I
1.

INTRODUCTION

TxMini-M12 Transmitter is a 4-20 mA 2-wires temperature
transmitter for head mount, powered by the current loop. It can be
configured using SigNow or TxConfig II software or SigNow app.
The output current is linearized according to the selected input
sensor and adjusted to the configured range.
2.

SPECIFICATIONS

Sensor Input: User defined. The supported sensors are listed in Table
1, along with their maximum ranges.
Pt100: Type 3-wire, Excitation 0.8 mA, α = 0.00385, according to
IEC 60751 (ITS-90).
Pt1000: Type 3-wire, Excitation 0.8 mA, α = 0.00385, according
to NBR 13773. IEC 60751 (ITS-90).
For 2-wire sensors, tie terminals 3 and 4 together.
Switch-on delay: < 2.5 s. The accuracy is only guaranteed after 15
minutes.
Reference terms: Ambient: 25 ° C (77 °F); voltage: 24 Vdc, load:
250 Ω; settling time: 15 minutes.
Temperature effect: < ± 0.2 % / 25 °C.
Response time: Typical 1.6 s.
Maximum voltage allowed at input terminals no sensor: 3 V.
RTD current: 800 µA.
RTD cable resistance effect: 0.005 °C /
Maximum allowable cable resistance for RTD: 25
SENSOR TYPE
ACCURACY
Pt100 / Pt1000
Table 1 – Calibration error, percentage of the full measurement range
Power supply influence: 0.006 % / V typical (percentage of the full
measure range).
Output: 4-20 mA or 20-4 mA current, 2-wire; linear in relation to the
temperature measurement by the selected sensor.
Output resolution: 2 µA.
Power supply: 8 to 35 Vdc, across the transmitter.
Maximum load (RL): RL (max.) = (Vdc – 8) / 0.02 [Ω]
Where: Vdc = Power supply voltage (8-35 Vdc)
Operating temperature: -40 to 85 °C (-40 to 185 °F).
Humidity: 0 to 90 % RH.
Electromagnetic compatibility: EN 61326-1:2006.
No electrical isolation between input and output.
Internal protection against polarity inversion.
Cold junction compensation for thermocouples.
Connection wire cross section: 0.14 a 1.5 mm²
Screw tightening: 0.8 Nm.
NOVUS AUTOMATION
Ω.
Ω.
TYPICAL MINIMUM
ACCURACY
0.1 % 0.2 %
Housing: Polyamide.
MAXIMUM
SENSOR
MEASUREMENT
TYPE
RANGE
-200 to 650 °C
Pt100
(-328 to 1202 °F)
-200 to 650 °C
Pt1000
(-328 to 1202 °F)
Table 2 – Sensors accepted by the transmitter
Order codes:
- P/N: 8806060406: TxMini-M12 transmitter.
- P/N: 8816021079: TxConfig-M12 Interface.
- P/N: 8806060506: TxMini Transmitter (transmitter can only be
configured during production).
- P/N: 8806065000: M12 Connector Cable for TxMini-M12
(accessory).
3.

CONFIGURATION

The factory setting of the transmitter is for Pt100 input with a range of
0 to 100 °C 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 equipment,
you should use SigNow software, TxConfig II software, or SigNow
app.
To configure the equipment through any of the software, you must
connect the TxConfig-M12 Configuration Interface (purchased from
the manufacturer or its authorized representatives) to the USB port of
the computer used and run the selected software.
To configure the device via the SigNow app, you need to use an
OTG cable with the TxConfig-DIN43650 Configuration Interface and
proceed with the recognition process (see
CONNECTIONS chapter).
On NOVUS website, you can download the configuration software for
free. To install it, simply run the file SigNowSetup.exe or the file
TxConfigIISetup.exe and follow the instructions in the installer.
The SigNow setup application can be downloaded for free from the
Google Play Store or the App Store.
The communication interface TxConfig-M12 is not
electrically isolated from the transmitter input.
MINIMUM
MEASUREMENT
RANGE
40 °C
(104 °F)
40 °C
(104 °F)
SMARTPHONE
1/5