RTD or Thermistor Input, Factory Configured
Specify temperature range in °F or °C and sensor type
Minimum span: 100°F (55°C) or consult factory
RTD types:
Specify type listed below and if 2, 3, or 4 wire
For others provide resistance at 0°C and curve
100
Ω
0.00385 DIN
100
Ω
0.003916
100
Ω 0
.00392
10
Ω
Cu
1000
Ω
Ni-Fe
120
Ω
Ni
RTD leadwire compensation: < ±0.05% of
span per 1
Ω
change in leadwire resistance
Thermistors:
Specify type listed below. For other sensor types
provide temperature-resistance chart.
44004/44033 2.252 k
Ω
at 25°C
44005/44030 3.000 k
Ω
at 25°C
44007/44034 5.000 k
Ω
at 25°C
44006/44031 10.00 k
Ω
at 25°C
44008/44032 30.00 k
Ω
at 25°C
YSI 400 2.252 k
Ω
at 25°C
Spectrum 1003k 1 k
Ω
Isolation
Power to input isolation:
1200 V
Common mode protection: 600 VAC
p
or 600 VDC
LoopTracker
Variable brightness LED indicates input level and status
APD 1401 Relay Output
Single setpoint dual DPST contact sets, field configurable
2 Form A (NO) and 2 Form B (NC) contact sets (8 terminals)
May be field wired for Form C operation
One set point, 12 turn potentiometer, 0-100% of span
One reset point, 12 turn potentiometer, 0-100% of span
Factory configured alarm
Standard: HI alarm, non-latching, normal acting
APD 1421 Relay Output
2 independent setpoint DPST contact sets, field configurable
SP 1: Form A (NO) and Form B (NC) contacts (4 terminals)
SP 2: Form A (NO) and Form B (NC) contacts (4 terminals)
May be field wired for Form C operation
Two set points, two 12 turn potentiometers, 0-100% span
Two reset points, two 12 turn potentiometers, 0-100% span
Factory configured alarm
Standard: HI/LO alarm, non-latching, normal acting
Options:
LO/LO, HI/HI, LO/HI alarms, band alarms,
latching, reverse acting
Relay Contact Ratings
8 A max @ 240 VAC
resistive load.
External contact
protection such as
an RC snubber is
recommended for
inductive loads.
Response Time
300 milliseconds
typical
Output Test/Reset Button
Front button or external contact closure toggles relays to
opposite state when pressed.
Resets relay if latching relay option is ordered
RTD/Thermistor Input Alarm Trips, Isolated, Factory Configured
APD 1401, APD 1421
Input:
2 or 3 Wire RTD
Output:
Two 8 Amp SPDT Relays
O
Factory Set Input Type and Temperature Range
O
Adjustable Trip and Reset Potentiometers
O
Input LoopTracker
®
and Alarm Status LEDs
O
Full 1200 V Isolation
O
Alarm Test, Optional Latching Reset Button
O
RTD Leadwire Compensation
Q
Process Limit Alarm
Q
Monitor, Heaters, Refrigerators, Ovens
Q
Process Signal Over or Under Alarms
Applications
Switching Current (A)
Switching Voltage (V)
0
3 5 10
30 50 100 300 500
8
5
3
1
0.5
0.3
0.1
AC inductive load
(cos
f
= 0.4)
AC resistive
load
DC inductive load
(L/R = 7 ms)
DC resistive
load
© 07-20
api-usa.com
1220 American Way Libertyville, IL 60048
Phone:
800-942-0315
Fax: 800-949-7502
A
A
BSOLUTE
BSOLUTE
P
P
ROCESS
ROCESS
I
I
NSTRUMENTS
NSTRUMENTS
Description
The APD 14x1 series accepts an RTD or thermistor tempera-
ture input and provide a visual alarm indication and alarm
relay contact outputs.
The input type, range, and alarm types are factory configured.
The input can be configured for most RTDs or thermistors.
Front-accessible potentiometers are used to adjust alarm trip
and reset point(s).
LoopTracker and Alarm Status LEDs
API exclusive features include a LoopTracker LED that varies
in intensity with changes in the process input signal.
A red/green bicolor alarm status LED (two on the APD 1420)
visually indicate alarm status.
These LEDs provide a quick visual picture of your process
at all times.
Output Test / Unlatch
API's exclusive Output Test button can be used to verify the
alarm and system operation and also provides the additional
function of unlatching the alarm when the latching option has
been ordered.
The output test button greatly aids in saving time during initial
startup and/or troubleshooting.
Ambient Temperature Range and Stability
–10°C to +60°C operating ambient
Better than 0.04% of span per °C
Dimensions
0.89" W x 4.62" H x 4.81" D (22.5 x 117 x 122 mm)
Height includes connectors
Housing and Connectors
IP 40, requires installation in panel or enclosure
For use in Pollution Degree 2 Environment
Mount vertically to a 35 mm DIN rail
Four 4-terminal removable connectors, 14 AWG max wire size
Power
85-265 VAC, 50/60 Hz or 60-300 VDC, 2 W maximum
D versions: 9-30 VDC or 10-32 VAC 50/60 Hz, 2 W maximum
Quick Link:
api-usa.com/1000
Input:
2, 3, or 4 Wire RTD or Thermistor
New Microprocessor-Based Versions
Output:
Two 8 Amp DPST Relays
Free Factory
I/O Setup!
H H H H H H
H H H H H
H H H H H H
H H H H H
H H H H H H
H H H H H
H H H H H H
H H H H H
H H H H H H
Made in USA
Quick Link:
api-usa.com/1400
Applications Link
api-usa.com/apps
Pb
Lead
Free
Model
Input
Standard Alarm Configuration
Power
APD 1401
Factory ranged, specify
sensor type,
°F or °C range
Options if required
HI alarm, single setpoint, dual DPST relays
non-latching, normal acting
85-265 VAC or 60-300 VDC
APD 1401 D
9-30 VDC or 10-32 VAC
APD 1421
HI/LO alarms, 2 setpoints, 2 DPST relays
non-latching, normal acting
85-265 VAC or 60-300 VDC
APD 1421 D
9-30 VDC or 10-32 VAC
Options
—
add to end of model number
L
APD 1401 with LO trip. Alarm trips on decreasing signal.
HH
APD 1421 with HI/HI trip. Alarms trip at their respective
trip points on increasing signal.
LL
APD 1421 with LO/LO trip. Alarms trip at their respec-
tive trip points on decreasing signal.
LH
APD 1421 with LO/HI trip. Alarm 1 trips on decreasing
signal. Alarm 2 trips on increasing signal.
BA
APD 1421 with band alarm. Alarm trips if signal is out-
side LO and HI trip points.
IBA
APD 1421 with inverse band alarm. Alarms trip if signal
is between LO and HI trip points.
HT
Latching alarm with push button reset
HP
Latching alarm with power-off reset. Module power
must be turned off to reset alarms
R
Reverse-acting alarms. Relay coils energized in an alarm
condition. No alarm condition with module power off.
U
Conformal coating for moisture resistance
Accessory—order as separate line item
API BP4
Spare removable 4 terminal plug, black
Universal Power
Alarm Status LED
Input LoopTracker LED
Alarm Test Function
Adjustable Deadband
Two 8 Amp SPDT
Alarm Relays
Custom Input Ranges
Removable Plugs
Adjustable Setpoint
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
See Wiring
Diagrams on
Next Page
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