Din Rail Thermocouple Converter

DAT2145

• Thermocouple Temperature Converter.
• DIP Switch Programmable.
• Voltage Linear.

General Description

The Din Rail Thermocouple converter DAT2145 is a DIN Rail mount temperature converter with DIP Switch programmability.
The DAT2145 will convert the thermocouple input and provide a 4-20mA, 0-20mA or 0-10 V output signal which is linear to the voltage input. The DAT2145 has internal cold junction compensation.
The DAT2145 is accurate to 0.1% full scale and has less than 0.02%/°f thermal drift.
It is possible to set the coarse range and zero with the DIP switches. Use the potentiometers to fine tune the output whilst keeping within the minimum and maximum ranges shown in the table on the data sheet. The potentiometers are located on top of the DAT2145.
The DAT2145 is in compliance with the standard 89/336/CEE on the Electromagnetic Compatibility.
The DAT2145 is housed in a plastic enclosure of 12.5 mm thickness suitable for DIN rail mounting in compliance with EN-50022 and EN-50035 standards.

INPUT	OUTPUT	POWER SUPPLY
Thermocouple.	Current 4-20mA .	Power Supply Voltage 10-30Vdc
	Volt 0-10V	Reverse polarity protection 60Vdc
CURRENT CONSUMPTION	CONFIGURATION	ISOLATION
40 mA	DIP Switch Programmable	None
	Span and Zero Adjustable pots
EMC	HOUSING	TEMPERATURE
For Industrial environments	Material self-extinguishing	Operating Temperature -4°F +158°F -20°C +70°C
Immunity EN 61000-6-2	Dimensions W x H x T 3 1/2" x 4 1/2" x 1/2 "	Storage Temperature -40°F +185°F-40°C +85°C
Emission EN 6100-6-4	90 x 112x x 12.5 mm	Humidity (non condensing) 0-90%
	Weight 3 oz 90 g

DAT2145 Datasheet

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Applications
Drawings
Din Rail Temperature Transmitters

Specifications

Input type:	Min	Max	Min. span
K Type Thermocouple	-58℉	2500℉	210℉
	50℃	1370℃	100℃
J Type Thermocouple	-58℉	1650℉	210℉
	50℃	900℃	100℃
R Type Thermocouple	-58℉	3200℉	1290℉
	50℃	1760℃	800℃
S Type Thermocouple	-58℉	3200℉	1290℉
	50℃	1760℃	800℃
T Type Thermocouple	-58℉	840℉	210℉
	50℃	450℃	100℃
Input impedance	<=10MΩ
Line resistance influence	0.2 uV/&ohm

Power Supply Specifications

Power supply voltage	10 .. 30 Vdc
Current Consumption	Current output 40 mA
	Voltage output 10 mA

Signal type	4-20 mA
	0-20 mA
	0-10 Volts
Burnout condition	High >20 mA or >10 Volts
Max output signal	30 mA or 18 Volts
Load resistance	Current output < 500Ω
	Voltage output > 5 KΩ
Response time	from 10 to 90% 500 ms
Warm up time	3 minutes
Calibration error	> of ±0.1% f.s. or ±0.1 ℉ ±0.2 ℃
Linearity error	±0.05% f.s.
Cold junction Compensation	±0.5% f.s.
Thermal drift	0.01% f.s./℉ for 500℉
	0.02% f.s./℃ for 500℃

Operative temperature	-4℉ to 158℉
	-20℃ to 70℃
Storage temperature	-40℉ to 185℉
	-40℃ to 85℃
Humidity (not condensed)	0 to 90 %
Maximum Altitude	6500ft 2000m
Installation	indoor
Category of installation	II
Weight	3 Oz
	90 g.
Material	Self-extinguish plastic
IP Rating	IP20
Wiring size	AWG 14-18
	0.8÷2.1 mm²
Screw torque	0.8 N m
Mounting	DIN rail standard EN-50022 and EN-50035
Dimensions	H 3.5" L 4.4" T 0.5"
	H 90 mm L 112 mm T 12.5 mm
EMC	For industrial environments
Immunity	EN 61000-6-2
Emission	EN 61000-6-4

Input
Thermocouple	Terminals L and I
Power supply	Positive +V R Negative -V P
Output Current	Positive +V N Negative -V P
Output Voltage	Positive +V N Negative -V P
No Connection	G,H,E,and F

Thermocouple Converter Input Circuit.

Thermocouple Converter Power Supply.

Thermocouple Converter Output Circuit .

How to calibrate a Thermocouple Converter

Turn on the Thermocouple Converter and leave to warm up for 3 minutes.
Calculate the span by subtracting the zero from the maximum range.
Choose the correct DIP switch setting for the Span and Zero.
Connect a calibrator to the input connections and a calibrated multimeter to the output connections.
Set the calibrator to 10% of the span and adjust the output to 10% output with the zero potentiometer.
Set the calibrator to 90% of the maximum range and adjust the output to 90% of full scale.
Repeat step 4 and step 5 unit the output reads accurately.

DIP switch settings for input and output.

Output Signal Span	SW1	SW2	SW3	SW4	SW5
4 to 20 mA	On	Off	On	Off	On
0 to 20 mA	On	On	On	Off	Off
0 to 10 Volts	Off	On	Off	On	Off

DIP switch settings for a Thermocouple Converter.

K type Thermocouple

Span	SW1	SW2	SW3
210 to 300℉ 100'C to 150℃	On	On	Off
300 to 940℉ 150'C to 505℃	On	On	Off
940 to 2500℉ 505'C to 1370℃	On	On	Off
Zero	SW4
-58 to 14℉ -50 to -10℃	Off
14 to 122℉ -10 to 50℃	On

J type Thermocouple

Span	SW1	SW2	SW3
210 to 240℉ 100'C to 115℃	Off	On	Off
240 to 390℉ 115'C to 200℃	Off	On	On
390 to 1110℉ 200'C to 600℃	Off	On	On
11100 to 1650℉ 600'C to 900℃	Off	Off	On
Zero	SW4
-58 to 14℉ -50 to -10℃	Off
14 to 122℉ -10 to 50℃	On

R type Thermocouple

Span	SW1	SW2	SW3	SW4
1290 to 1470℉ 700'C to 800℃	Off	On	Off	On
1470 to 3200℉ 800'C to 1760℃	Off	On	On	On

S type Thermocouple

Span	SW1	SW2	SW3	SW4
1290 to 1470℉ 700'C to 800℃	Off	On	Off	On
1470 to 3200℉ 800'C to 1760℃	Off	On	On	On

T type Thermocouple

Span	SW1	SW2	SW3	SW4
210 to 300℉ 100'C to 150℃	Off	On	Off	On
300 to 840℉ 150'C to 450℃	Off	On	On	On

Din Rail Thermocouple Converter

DAT2145

Key Features