Loop Isolators - Isolate 4-20 mA Current Loops

lifetime warranty
  • Lifetime Warranty on API Modules
  • LoopTracker® I/O LEDs
  • Hot-Swappable Plug-In Design
  • Zero and Span Output Calibration
  • Push to Test Output
  • Full I/O/Power Isolation
Click on model numbers below
for data sheets
Literature and Links

API product brochure

Options & accessories

Cross reference
Reference Info

Ground Loops
RFI and EMI
LoopTracker and Output Test
Sink vs Source

Applications

Monitor & Record Mass Flow & Ratio
How to Order
  1. Select a model
  2. See data sheet for ordering info and power options
  3. See Price list
  4. 2 day to 4 week typical lead time (USA customers)
  5. To place your order
Model Input/Output Features Product
Loop Powered Isolator
Plug In Style

LPI-1
Input
Factory configured
4-20 mA

Output
Factory configured
4-20mA
  • Hot-swappable plug-in design
  • Lifetime warranty
  • LoopTracker® LED for output
  • Output test button
  • Uses API-008 8-pin socket

Api LP-1
LPI-1
Loop Powered Isolator
2 Channel

Plug In Style

LPI-2
Input
Factory configured
Two independent 4-20 mA loops

Output
Factory configured
Two independent 4-20 mA loops
  • Two independent channels
  • Hot-swappable plug-in design
  • Lifetime warranty
  • LoopTracker® LED for output
  • Output test button
  • Uses API-008 8-pin socket

Api LP-2
LPI-2
Loop Powered Isolator
2 Channel

DIN Style

DPI-2
Input
Factory configured
Two independent 4-20 mA loops

Output
Factory configured
Two independent 4-20 mA loops
  • Lifetime warranty
  • LoopTracker LED for output
  • Output test button
  • DIN rail mount
  • 22.5 mm wide

API DPI-2
DPI-2
Universal Input to 4-20 mA Loop Powered Isolator
Thin DIN Style

K121 datasheet

K121 installation
Field Programmable Input
Input: –150 mV to +150 mV
–30 V to +30V
–24 mA to 24 mA
RTD: Pt100, Pt500, Pt1000, Ni100
Thermocouple: J, K, T, E, R, S, B, N
Potentiometer: 500 Ω to 10 KΩ
Resistance: 1750 Ω

Output: 4-20 mA loop powered

  • Only 6.2 mm wide
  • PC programmable configuration
  • Full 2-way isolation
  • Low cost
  • DIN rail mount without tools
  • Powered by 4-20 mA loop

  • CE logo 
K121
K121
Loop Powered Isolators
PCB Mount

Sineax DCM 817-4 Straight Pins
Sineax DCM 817-5 90° Pins

Input
0-20 mA, 4-20 mA

Output
0-20 mA, 4-20 mA
  • 500 V isolation
  • Circuit board mounted
  • Straight pins or 90° pins
  • Loop-powered passive device
  • 600 Ω maximum burden
  • Compact and cost effective OEM solution

CE Sineax DCM817-90 Sineax DCM817-90
DCM 817-4      DCM 817-5
Loop Powered Isolators
DIN Style

Sineax TI816

Instructions
Input
0-20 mA, 4-20 mA

Output
0-20 mA, 4-20 mA
  • 500 V isolation
  • Loop-powered passive device
  • Order with V or mA output
  • 600 Ω maximum burden (current)
  • 500 Ω maximum burden (voltage)
  • Only 0.5" (12.5 mm) wide

CE Sineax TI 816
TI816
Loop Powered Isolators
DIN Style

Sineax SI 815

Instructions
Input
SI 815-5: One channel 4-20 mA
SI 815-1: Two channels 4-20 mA

Output
SI 815-5: One channel 4-20 mA
SI 815-1: Two channels 4-20 mA

  • 2300 V isolation
  • 1 and 2 channel versions
  • Output loop powered (12-30 V)
  • Transfers power to input loop
  • Optional HART protocol

hart logo
Sineax SI 815-2 CE
SI 815
Loop Powered Isolators
DIN Style

TI 807-5
TI 807-112
TI 807-113


Instructions
Input
TI 807-5: One channel 0-20 mA, 4-20 mA
TI 807-112: Two channels 0-20 mA, 4-20 mA
TI 807-113: 3 channels 0-20 mA, 4-20 mA

Output
TI 807-5: One channel 0-20 mA, 4-20 mA, 0-10V
TI 807-112: Two channels 0-20 mA, 4-20 mA, 0-10V
TI 807-113: 3 channels 0-20 mA, 4-20 mA, 0-10V

  • Up to 4000 V isolation
  • Loop-powered passive device
  • 1, 2, or 3 channel versions
  • 1000 Ω maximum burden

CE

Sineax TI 807-5
TI 807 Series



S315 and S315-IP66
4 Digit 4-20 mA Loop Powered Display

1/8 DIN

S315 and S315 datasheet

S315 and S315 installation
Loop Powered Display
Input: 4-20 mA
Display: 4 digit red LED

  • 1/8 DIN panel mount or IP66 housing
  • 4-20 mA scalable to any 4 digit engineering units

CE logo 
S315
S315