KROHNE OPTITEMP TT 12 R User manual

Quick Start
For initial set up, we strongly recommend that you also refer to the relevant manual!
12/2021 – 4009159301 – QS OPTITEMP TT 12 R RTD/TC R02 en
1
OPTITEMP TT 12 R
Programmable 2-wire transmitter
For Pt100 / Pt1000 and Thermocouple
Installation, assembly, start-up and maintenance may only be performed by appropriately trained personnel.
Check the nameplate for correct operating conditions.
This instrument complies with requirements of Low Voltage Directive. Instruments must not be connected to
power supply before reading instructions described in the manual.
The responsibility as to the suitability, intended use and corrosion resistance of the used materials against
the measured fluid of this device rests solely with the operator.
1 Installation
•OPTITEMP TT 12 R RTD - Temperature converter for resistance sensor
•OPTITEMP TT 12 R TC - Temperature converter for thermocouples
•The TT 12 R RTD / TT 12 R TC is designed to be mounted on a 35 mm DIN Rail
according to EN 60715 / DIN 50022.
•Connect input, output and power supply according to “Electrical connection”.
•The transmitter is configured from a mobile device via NFCTM communication, by using the app
OPTICHECK Temperature Mobile. The app is avaiable for free download on App Store and
Google Play™.
Ambient temperature
Transmitter Tmin. Tmax.
[°C] [°F] [°C] [°F]
TT 12 R RTD
TT 12 R TC
-40 -40 +85 +185
Factory settings
TT 12 R RTD TT 12 R TC
Input
Pt100 3W, 0 to 100 °C
(equivalent to 212 °F)
Type K, 0 to 1000 °C
(equivalent to 1832 °F)
Output 4 to 20 mA 4 to 20 mA
Filtering level Response time 0.9 s Response time 0.9 s
Sensor error indication Upscale Upscale
Springcage connection
The cable is connected using a spring-cage connection.
In order to minimize measuring errors ensure that
the cable is securely fastened.
1. Insert a screwdriver into the opening above the
connection terminal block.
(Use a 2.5 x 50 mm slotted screwdriver.)
2. Insert the wire into the corresponding
connection terminal block.
Mounting and removal of the transmitter
1. Fix the upper part of the transmitter onto the rail.
2. Press the lower part of the transmitter against the rail.
3. To remove the transmitter, bend the locking device using a small screwdriver. Carefully pull
the transmitter in the forward direction.

12/2021 – 4009159301 – QS OPTITEMP TT 12 R RTD/TC R02 en
2
2 Electrical connection 3 Quick Setup
Download documents and software
Scan the code on the nameplate or scan the
following code and enter the serial number.
Contact
Select your country from the region / language selector to
view your local KROHNE contact details on:
www.krohne.com
Danger:
All work on the electrical connections may only be carried out with the power disconnected.
Take note of the voltage data on the nameplate.
Observe the national regulations for electrical installations.
*
Connect terminals 1 and 2.
Make the connection as short as possible.
Electrical connection of TT 12 R transmitter
RTD
RTD
RTD
T/C
Pt100 / Pt1000
2-wire connection
Pt100 / Pt1000
3-wire connection
Pt100 / Pt1000
4-wire connection
Thermocouple
B, E, J, K, N, R, S and T
Connection diagram of TT 12 R RTD transmitter
Connection diagram of TT 12 R TC transmitter
R
Load
(Ω)
Supply voltage U (VDC)
Maximum load depending on power supply.
Formula for the max. permissible output
load for TT 12 R:
RLoad [Ω]= (U-6)/0.022
Output load diagram
Before making a configuration of the TT 12 R you need to do the following:
1. Make sure that you have a mobile device with NFCTM communication activated.
2. Download the app OPTICHECK Temperature Mobile to your mobile device.
Required versions:
iOS
iOS 13 or later /
Iphone®7 or later for NFCTM
Android™
Android™4.4 or later
Configuration procedure:
1. Launch the app by clicking on the App icon (for Iphone®) or holding your mobile device
against the transmitter on the part of the device where NFCTM is located (for Android™)
2. Click on “Read Configuration” and hold your mobile device against the transmitter as
explained in the first section.
3. In the app you can edit the following:
a. Sensor type and number of wires
b. Measuring range
c. Upscale or downscale sensor error indication
d. Filter level
e. TAG
f. Password
4. Once you have set the desired values in the app, you transfer it to the transmitter by clicking
the transfer button and holding the mobile device against the transmitter until a green check
box appears confirming that the transfer has been completed.