pyroscience Pico-T User manual

Version V1.04 www.pyroscience.com
Pico-T
OEM Fiber-Optic Temperature
Meter
MANUAL
T

Pico-T | Manual
© PyroScience GmbH 2
Pico-T
OEM Fiber-Optic Temperature
Meter
Document Version 1.04
The Pico-T is released by:
PyroScience GmbH
Hubertusstrasse 35
52064 Aachen
Germany
Phone [phone]
Fax [phone]
Email [e-mail]
Web www.pyroscience.com
Registered: Aachen HRB 17329, Germany

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© PyroScience GmbH 3
TABLE OF CONTENT
1Introduction.....................................................................................................................................5
2Overview..........................................................................................................................................6
2.1 Optical port for temperature sensors .....................................................................................6
2.2 External temperature sensor......................................................................................................7
2.3Status LED ..........................................................................................................................................8
2.4 USB interface cable ........................................................................................................................8
3Option 1: Operating the Module with Pyro Workbench.......................................................9
3.1 Installing the software Pyro Workbench...............................................................................9
3.2 Using the software Pyro Workbench ...................................................................................10
4Option 2: Operating the module with Pyro Developer Tool ............................................ 11
4.1 Installing the software Pyro Developer Tool....................................................................11
4.2 Using the software Pyro Developer Tool ...........................................................................12
5Option 3: Simplified Custom Integration............................................................................... 13
5.1 Configuring the Module using PyroScience Software ...................................................13
5.2 Electrical Connector for Custom Integration.....................................................................13
5.3 Configuration of the Serial Interface....................................................................................14
5.4 Communication Protocol ...........................................................................................................15
5.4.1 General Definitions.........................................................................................................15
5.4.2 MEA –Trigger Measurement ......................................................................................16
5.4.3 COT –Calibrate the Optical Temperature Sensor...............................................18
5.4.4 SVS –Save Configuration Permanently in Flash Memory..............................18
5.4.5 #VERS –Get Device Information ..............................................................................19
5.4.6 #IDNR –Get Unique ID Number................................................................................20
5.4.7 #LOGO –Flash Status LED...........................................................................................20
5.4.8 #PDWN –Power Down Sensor Circuits .................................................................20
5.4.9 #PWUP –Power Up Sensor Circuits........................................................................20
5.4.10#STOP –Enter Deep Sleep Mode..............................................................................21
5.4.11#RSET –Reset Device....................................................................................................21
5.4.12#RDUM –Read User Memory ....................................................................................21
5.4.13#WRUM –Write User Memory ..................................................................................22

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5.4.14#ERRO –Response if Error Occurred......................................................................22
5.5 Available Implementations of Communication Protocol..............................................24
6Option 4: Advanced Custom Integration ............................................................................... 25
7Technical Drawing....................................................................................................................... 26
8Specifications ............................................................................................................................... 27
9Safety Guidelines......................................................................................................................... 29

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1INTRODUCTION
The Pico-T (item no. PICO-T) is a fiber-optic OEM meter for read-out of optical
temperature sensors from PyroScience. The Pico-T is characterized by its small size,
durability and low power consumption. This OEM module is easy to integrate and is
controlled with a simple serial communication protocol.
To control the Pico-T, there are several options depending on the users´ level of
experience with optical sensors:
Option 1: For initial evaluation purposes, Pico-T can be operated with the
simple and customer-friendly logger software Pyro Workbench, which is
typically used by end-users. This software offers comfortable settings and
calibration wizards, as well as advanced logging features. Several modules can
be operated in parallel within a single window. This software requires an
encoded USB interface cable (item no. PICO-USB) for connecting the module to a
Windows PC (see chapter 3).
Option 2: For advanced evaluation purposes, the module can be operated with
the software Pyro Developer Tool. It offers simple settings and calibration
procedures, as well as basic logging features. Furthermore, additional advanced
settings offer full control on all features of the module. This software requires
an encoded USB-interface cable (item no. PICO-USB) for connecting the module
to a Windows PC (see chapter 4).
Option 3: A simplified custom integration of the module can be realized by
adjusting the settings and performing sensor calibrations using the PyroScience
software Pyro Workbench or Pyro Developer Tool (requires the encoded USB
interface cable PICO-USB). After closing the software, the configuration is
automatically saved within the internal flash memory of the module. The
module can then be integrated into a specific setup, and your custom software
can perform measurements using a proprietary USB/UART communication
protocol (see chapter 5).
Option 4: For advanced custom integration the full USB/UART communication
protocol is available on request, allowing custom software full control on all
settings, calibration and measurement features of the module (see chapter 6).

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2OVERVIEW
Figure 1 provides an overview of the Pico-T. The front provides the port for connecting
an optical fiber used for read-out of optical temperature sensors, as well as solder points
for an external temperature sensor enabling calibration of the optical temperature
sensor. The backside of the module provides the connector for the power supply and the
digital communication interface, as well as a red status LED.
Figure 1: Overview of Pico-T
2.1 Optical port for temperature sensors
The Pico-T enables measurements with optical temperature sensor spots (TSP5). These
spots can be mounted in a closed transparent vessel or placed directly in front of an
optical fiber and can be used for temperature compensation of optical pH or optical
oxygen measurements.
For connecting an optical fiber, Pico-T provides a clamping screw for fibers with an
outer diameter of 3mm. This enables connecting fibers with 1m length (item no. PICFIB2)
or short fiber rods (item no. PICROD2 / PICROD3). To insert the optical fiber/rod, slightly
loosen the nut at the sensor port of the Pico-T. Remove the protective cap from the
optical fiber/rod and insert it carefully into the sensor port of the Pico-T until there is
resistance. Fasten the nut with your fingers for fixing the fiber/rod.

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2.2 External temperature sensor
The optical temperature sensors need to be calibrated against an electrical Pt100
temperature sensor. For this, Pico-T offers a high-precision sensor interface, which can
be directly connected to a Pt100 temperature sensor (not included, item no. TSUB21-NC).
The temperature sensor has to be soldered to the 4 solder pads at the front of the
module.
Figure 2: Connecting a resistive temperature sensor to the module
The Pt100 temperature sensor has to be soldered to the 4 solder pads at the front of the
module (Figure 2). For short distances (e.g. 10 cm) a simple 2-wire connection might be
sufficient. For this, it is important to shortcut the outer with the inner solder pads as
indicated in Figure 2. For longer distances and/or for high precision measurements a 4-
wire connection should be preferred.
In order to minimize potential electrical noise coupling into the external
temperature sensor, the cables should be twisted and kept as short as possible.

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2.3 Status LED
The behavior of the status LED is given in Table 1.
Table 1: Status LED
2.4 USB interface cable
For the operation of Pico-T with a Windows PC, a coded USB interface cable (item no.
PICO-USB) is available from PyroScience. It includes a license for the comfortable logger
software Pyro Workbench and the software Pyro Developer Tool. Especially for initial
testing purposes this software packages can speed up OEM-developments significantly.
Additionally, the USB interface cable PICO-USB provides a virtual COM-port. Custom
software can use this virtual COM-port for communicating directly with the module
based on the communication protocol (see chapter Fehler! Verweisquelle konnte nicht
gefunden werden. and Fehler! Verweisquelle konnte nicht gefunden werden.).
Status
Description
Behavior of status LED
Power-Up
The power supply is switched
on.
A correct startup of the module
is indicated by 4 flashes within
1-2 seconds.
Active
The module is either in idle
mode waiting for a new
command, or it is executing a
command.
The LED flashes periodically
with 1s interval.
Deep sleep
While the power supply is still
enabled, the module can be put
into deep sleep mode by the
#STOP command.
The LED is switched off.
#LOGO-command
The #LOGO-command is sent to
the module.
The LED flashes 4 times within
1-2 seconds.

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3OPTION 1: OPERATING THE MODULE WITH
PYRO WORKBENCH
For initial evaluation purposes the module can be operated with the simple and
customer-friendly software Pyro Workbench, which is typically used by end-users. This
software offers comfortable settings and calibration wizards, as well as advanced
logging features. Several modules can be operated in parallel within a single window.
This software requires an encoded USB interface cable PICO-USB for connecting the
module to a Windows PC.
3.1 Installing the software Pyro Workbench
System requirements: PC with Windows 7/8/10 and min. 1000 MB free disk space.
Do not connect the USB-interface cable to your PC before the Pyro Workbench
software has been installed. The software will automatically install the
appropriate USB-drivers.
Installation steps:
•Download the Pyro Workbench from the downloads tab on www.pyroscience.com
•unzip and start the installer and follow the instructions

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•connect the interface plug of the USB interface cable to the connector X1 of the
Pico-T
•connect the USB plug to an USB port of the PC. The status LED of the Pico-T
should flash shortly indicating the correct startup of the module.
•Start the Pyro Workbench software.
3.2 Using the software Pyro Workbench
Please refer to the Pyro Workbench manual for general operation instructions for the
software (available on our website).
Please refer to the Optical Temperature Sensor Manual for general information on
handling and calibration of the optical temperature sensors (available on our website).