4~20mA 12~32VDC St171 Economical Temperature Transfer Module

• Customization: Available
• Power Supply Voltage: 12~32VDC
• Output Type: 4~20mA+Hart
• Model NO.: ST171
• Collection Stability: 0.01ºC(Rtd);1.0ºC(Brs)
• Size: Diameter 44mm
• Production Capacity: 100000

Product Description

The ST171 intelligent temperature transmitter provides an economical solution for temperature detection applications. The ST171 is more accurate, safe and reliable, and reduces the cost of wiring compared to the directly connected temperature measuring points. The temperature signal output of this temperature transmitter is automatically linearized within the upper and lower limits set by the user. In addition, users can program high- and low-limit alarm points and make them alarm if the sensor fails.


Characteristics:

• Analog output 4~20mA
• Thermal resistance or resistance value input
• Type B DIN rail or head mount
• Sensor fault signals comply with NAMUR NE43
• Use STT17C configuration tool and PC to configure it

Applications:
• Support PT100/PT1000 thermal resistance
• 8 kinds of thermocouples

Table 1. Performance parameters

Sensory type	Basic accuracy 1		Rated range	Standard	Minimum range^2	The temperature effect of every 1.0ºC 3 change in ambient temperature
	Fixed value	% of the range	ºC		ºC	Fixed value	% of the range
Pt100	0.15ºC	±0.1	-200~+850	IEC60751	25ºC	0.01ºC	±0.01
Ni100	0.3ºC	±0.1	-60~+250	DIN73460	25ºC	0.01ºC	±0.01
Ω	0.2Ω	±0.1	0~+1000		30Ω	20mΩ	±0.01

1. Select the larger value, the overall reference accuracy = basic accuracy
2. Or 50% of the upper limit value of the range, choose the larger value
3. Reference temperature 24ºC

Table  2. Specification parameters
Operating condition

Ambient temperature (rated)	-40~85ºC
Humidness	0~95%RH
Vibration	Max. 4g(25~100Hz)

Table 3. Specification parameters
Electrical input characteristic

Power source	8~30V DC
Supply voltage effect	≤0.005% range /V DC
Preheating time	Five minutes
Response time (configurable)	0.33~60s

Current output characteristic

Signal output range	4~20mA
Refresh time	135ms
Loop resistance	≤(power supply voltage -8)/0.023A 0~870Ω

Warning

Configurable	3.5~4mA Downscale,20~23mA Upscale
NAMUR NE43 Upscale	23mA
NAMUR NE43 Downscale	3.5mA

Table  4. Specification parameters
Ex certification
 

KEMA 06 ATEX 0042 X	II I GD,T80ºC ⋯T105ºC EEX ia II C T4⋯T6
T4 Maximum ambient temperature	85ºC
T6 Maximum Ambient temperature	60ºC
Application area	0,1,2,20,21 and 22

Ex data

Ui(max)	30VDC
Ii(max)	120mADC
Pi(max)	0.84W
Li(max)	10μH
Ci(max)	1.0nF
Uo(max)	27VDC
Io(max)	7mADC
Po(max)	45mW
Lo(max)	34mH
Co(max)	90nF

 

 

STT17C configuration tool

STT17C can be configured ST171, ST173 and ST17H. Once the configuration software is loaded into the computer, the operator needs no training to configure it through an intuitive graphical user interface. The STT17C includes all the software and interface hardware needed to configure the ST171, ST173, and ST17H transmitters.

Warning: STT17C should not be used in dangerous places

System requirement

Windows XP, 7, 8, 10 and meet the following configurations: Memory: 16MB
Display resolution: 800×600 Hard disk space: 12MB
 

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