NK TECHNOLOGIES DS3 Series Instructions

Specifications
Power 20-28 VAC/DC, 10 VA
Setpoint Ranges 4-20A, 10-50A, 20-100A
Setpoint Adjust 11 Turn potentiometer
Isolation Voltage 1.48KV
Frequency Range DC to 400 Hz
Repeatability 0.5%
Hysteresis 5% of setpoint
Sensing Aperture 0.75" (19mm)
Case UL 94-V0 Flammability Rated
Output Rating & Environmental
NOU Isolated Solid State Switch
0.3A @ 135 VAC/DC
Off State Leakage NONE
Environmental -40 to 60 DegF (-40 to 140 DegF)
0-95% RH, Non Condensing
SDT SPDT (Form C) Relay
5A General Purpose @ 240 VAC
3A Inductive @ 240 VAC
3A @ 30 VDC
1/8HP @ 240 VAC
Environmental -20 to 50 DegC (-4 to 122 DegF)
0-95% RH, Non Condensing
Ranges & Maximum Amps
RANGE
RANGE MAX
SOLID CORE
JUMPER 5 SEC.
4-20 A
LOW At least
10-50 A
MID 1000% of
20-100 A
HIGH Range
Model Number Key
DS3 - SDT - 24U
OUTPUT:
NOU Normally Open Solid State Switch, 0.3A
SDT
SENSOR TYPE:
DS3 DC current sensing switch with 3 jumper selectable
range and adjustable setpoint
Know Your Power
MAX
CONTINUOUS
Other NK Technologies Products Include:
AC & DC Current Transducers
At least 200%
of range AC & DC Current Operated Switches
indefinely
1φ & 3φPower Transducers
Current & Potential Transformers (CTs&PTs)
500 Division Street, Campbell CA 95008
800-959-4014 or +1-408-871-7510 Phone
+1-408-871-7515 FAX
sales@nktechnologies.com, www.nktechnologies.com
Power Supply
24U 24VAC /DC
@ 135 VAC
Single Pole Double Throw (SPDT or
Form C) relay
INSTRUCTIONS
DS3 SERIES
DC Current Operated Switch
Quick "How To" Guide
1. Run the wire you are monitoring through aper-
ture.
2. Mount the sensor.
3. Connect power & output wiring.
A. Make sure power supply matches specifications.
B. Make sure output load matches the output shown
on the sensors' label.
4. Adjust Setpoint
A. Chose correct range by positioning the Range
Jumper
B. Use the potentiometer to adjust the setpoint.
DS3Inst. Rev 3.2, 2/03 P/N 39-300-0101