DESCRIPTION

ST1100L series, a standard analog amplifier, with 4~20mA current signal input and 4~20mA current signal output, is a passive signal isolation module. Adopting unique electromagnetism isolation design and high efficiency loop electric-larceny technology, independent power supply is not required for the module, realizing 4~20mA standard signal isolation with high accuracy and linearity. Besides, the modules have extremely low temperature drift (no more than 35ppm/

under -25~ +71) . The isolation voltage between the input and output can be up to 3KVDC.

FEATURES

• Two-port isolation (Between input and output)

• High linearity (0.1% F.S.)

• High accuracy (0.1% F.S.)

• Isolation voltage (3KVDC/ 60s)

• Low voltage-drop (3V typ: @ input=20mA)

• Extremely low temperature drift (35PPM/)

• Industry standard (Operating Temperature Range: -25

  
  ~ 71
  
  )

• High reliability (MTBF) 500000 hours)

PRODUCT PROGRAM

Part Number	Power Supply	Input	Output	Isolation Power Output	Channels	Package
ST1100L	NONE	4~20mA	4~20mA	NONE	1	SIP12

ELECTRICAL CHARACTERISTICS

Power Supply Parameter	Power Supply	None
	Power Consumption	None
	Power Protection	None
Input Parameter	Input Signal	4~20mA
	Overload	50mA
	Voltage Drop-out	Typ: 3V (@input = 20mA)
Output Parameter	Output Signal	4~20mA
	Load Capacity	300ohm (At output = 20mA)
	Load Regulation	0.05% meas. val. / 100ohm

TRANSMISSION CHARACTERISTICS

Zero Offset	0.1%F.S.
Gain Error	0.1%F.S.
Temperature Drift	0.0035%F.S./ (-25 ~ +71 )

ISOLATION CHARACTERISTICS

Galvanic Isolation	Two-port isolation (Between input and output)
Isolation Voltage	3KVDC (Tested for 1minute and leakage current 1mA, humidity 70%)
Insulation Resistance	100MOh, 500VDC (Between input and output)

OTHER CHARACTERISTICS

Ambient	Operation temperature: -25 ~ +71
Temperature	Transport and Storage temperature: -50 ~ +105
Package	SIP12
Weight	About 8g
Application Environment	No dust, fierce vibration, impulsion and corrosive gas

Typical applications

• The 4-20MA current loop isolation and long distance transmission

• PLC, DCS input channel signal acquisition isolation anti interference

• Between multiple sensor wire interference suppression

• Instrument signal and sensor reliability of sending and receiving control

• Analog isolation and long-term signal data acquisition transmission without distortion

• Power meter, medical monitoring equipment isolation

• DC rail pressure monitoring

SCHEMATIC DIAGRAM

APPLICATION CIRCUIT DIAGRAM

PACKAGING SIZE AND TERMINAL DESCRIPTION