User manual for - TEMPERATURE TRANSDUCER TRS-02a
2.
GENERAL CHARACTERISTICS
The temperature transducer is designed for multipoint measurement of temperature by
means of a standard Pt100 sensor. In particular it is designed for use with bayonet sensors to
be used, for example, in smoke-houses. It may be used with any Pt100 sensors. This module
features very good compensation of effect of connection cable resistance on the result of
temperature measurement. Non-linear characteristics of the sensor is digitally linearised. The
module is equipped with Modbus RTU communication interface. It has a small plastic casing.
3.
TECHNICAL DATA
Power supply voltage
typically 10 VDC (9 VDC - 12 VDC)
Current consumption
during operation - typically 12 mA
during Modbus transmission - up to 65 mA
Measurement input
PT-100 type with automatic connection recognition
( 2, 3 or 4-wires)
Measurement
range
-50°C up to +550°C
Measurement error
±0.2%
Measurement wires resistance
max. 20
Ω
(every wire)
Number of modules in 1 network
maximum 127
Communication interface
Baud rate
RS 485, 8N1 / Modbus RTU
9600 bit/sec.
Data memory
non-volatile memory, EEPROM type
Protection level
IP 65 (ABS casing)
Housing type
Housing material
Housing dimensions (L x W x D)
without glands
with
glands
wall mounted
ABS
80 x 82 x 55 mm
130 x 105 x 55 mm
Operating temperature
Storage temperature
Altitude
-40°C up to +85°C
-40°C up to +85°C
up to 2000 meters above sea level
Fastening
to wall, 2 M3 bolts
Connection cable
4 conductors (2 supply conductors
+ 2 data transmission conductors)
Screws tightening max. torque
0,5 Nm
Max. connection leads diameter
2,5 mm
2
EMC
PN-EN 61326:2003
This is a class A unit. In housing or a similar area it can cause radio
frequency interference. In such cases the user can be requested to use
appropriate preventive measures.
4
