Omega Products 4201APC2 User Manual

1

⁄4 DIN RTD Digital Controllers

4200A Series

Starts at

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435

⻬ High Accuracy:

to 0.1% of Span

⻬ Single and Dual

Setpoint Models

⻬ 1.0° and 0.1° Models
⻬ Adjustable

Proportion Band

⻬ Bright LED Display

The OMEGA®4200A Series is an
ideal controller for RTD applications.
This quality-built linearized
instrument is available in both 1.0°
and 0.1° resolution models. Higher
accuracies, 5 to 10 times greater
than the typical 1% meter indicating
controller, are achieved through a
unique linearizing technique.

Bright, easy-to-read LED digits
present an unambiguous
temperature indication. Accuracy is
enhanced through 3-wire lead
compensation—a feature allowing
the sensor to be up to 305 m (1000')
from the controller. The standard
unit includes adjustable proportional
band, manual reset, plus a metal

1

⁄4 DIN case with full plug-in
construction, allowing front removal
of the control unit without disturbing
the case and its rear wiring. The
series 4200A controllers are
available in single or dual setpoint
models with relay output as a
standard. Triac or 4 to 20 mA
optional outputs are offered on the
first setpoint at no additional cost.
Truly a superior controller at a
remarkably low price.

Model 4201A Single Setpoint
Proportional Controller

This versatile digital controller can be
operated as a proportional controller
with the adjustable bandwidth up to 3%
of full span. The setpoint temperature is
always available. Simply push the
spring-loaded setpoint switch to the

4202APF2, $435, shown
smaller than actual size.

right, and the setpoint is digitally
displayed. To change the setpoint,
with the switch deflected to the right,
adjust the knob to the right of the switch
until you get the desired reading. The
standard Model 4201 has an internal
SPDT relay (7 A resistive at 120 Vac).
This model is also available with
optional Triac or 4 to 20 mA output
in place of the relay. See Options and
Specifications for more information.

Model 4202A Dual Setpoint
Controller

The first setpoint of the Model 4202A
incorporates the same features as the
Model 4201A and also can be ordered
with the optional Triac or 4 to 20 mA
output. The second setpoint may be set
at any value within the full span of the
controller. It energizes an SPDT internal
relay (3 A resistive 120 Vac) which can
be used as either an on-off control, a
high-limit alarm, or a low-limit alarm.
For an alarm with latching features, an
external latching relay and push button
to reset are suggested. The second
setpoint is set and displayed using the
same procedure as for the Model 4201A
except the switch is deflected to the left
and the left adjustment knob is used.

P-47

Option “T” Triac Output

Option “T” replaces the relay output on the
first setpoint with a solid state plug-in Triac
which yields time-proportional or on-off
switching. The Triac is rated at 1 A
continuous and 10 A in rush for both 120
and 240 Vac service. For higher
amperage loads the Triac may be used to
drive higher rating solid state relays or
mechanical contractors. Specify option “T”
after the model number when ordering, no
additional charge.

Option “F” (4 to 20 mA Output)

This option is applicable to the first
setpoint only and is used to drive
proportioning devices such as SCR
power controller, motor positioners,
or electropneumatic actuators.
The 4 to 20 mA dc output signal can be
connected to a maximum of 1000 Ω
resistance load. This signal is 20 mA at
the low temperature end of the
proportional band and is decreased
linearly through the band to 4 mA at the
high temperature end. If the driven device
is not isolated (ungrounded) an
ungrounded sensor must be used with
the Series 4200A which is designed for
only one ground in the system. Specify
option “F” after the model number when
ordering, no additional charge.

U

p to 3.2 (0.12)

Panel Thickness

MTG. Slide

9

1

(3.58)

S

quare

96

(3.78)

9

7

(3.81)

92

(

3.62)

P

anel

Cutout

9

2 (3.62)

96 (3.78)

118 (4.64)

MTG. Slide in Place

R

educe Length for
Panels Greater Than
3

.2 (0.12)

(Optional)

Set Point II Adj.

Output Light

(

Set Point II)

Output Light

(Set Point I)

Manual Reset Adj.

— +

Door

Plug-in Module Removal Screws

Narrow Wide

Proportional Band Adj.

O

verrange Indication - 3 Digit

(Decimal Point)

S

et Point II Adj.

Set Point Selector Switch

Set II

Set I

Read

305

°F

M

inimum center distance

b

etween units: 100 (3.93)

vertical & horizontal

E

xtended Warranty

Program

SM

OMEGACARESMextended warranty program

is available for models shown on this page.

Ask your sales respresentative for full details

when placing an order. OMEGACARE

SM

covers parts, labor and equivalent loaners.

Specifications*

RTD Input

Type: 100 Ω platinum;

alpha = 0.00385 (DIN curve)

Configuration: 3 wire

xternal Lead Wire Resistance

E
Effect: 0.1% span up to 10 ohms per

lead wire leg

Sensor Break Protection:

Built-in, upscale on open sensor

Calibration Accuracy:

1.0° Resolution Model:

±0.1% of span ±1 digit

0.1° Resolution Model:

±0.2% of span ±1 digit

Stability: 0.1% for 30 to 130°F,

0.1% +10% to 15% line voltage
Common Mode Rejection: Max error
±1°C with 240V, 60 Hz applied as
common mode signal between sensor
input and chassis ground

Series Mode Rejection:

Max error ±1°C with series
mode signal of 100 mV PK-to-PK
at 60 Hz

Control Output

1st Setpoint (Adjustable Time
Proportional):

Relay (Standard Model): SPDT relay

7 A resistive at 120 Vac, 5 A resistive
at 240 Vac
Option “T” (Triac): Solid state plug-in
triac rated 1 A holding and 10 A in-rush

Option “F” (Current Proportional):

4 to 20 mA (dc) into 1000 Ω max

2nd Setpoint:

Relay (On-off Only): SPDT,

rated 3 A at 120 Vac

Dimensions: mm (in)

Adjustments

Proportional Band (Gain): 0 to

3% of span, or on-off; selectable

Manual Reset (Offset): Adjustable
Cycle Time: Automatically adjusts

with load requirement to give least wear
with minimum ripple (10 sec. minimum
total time)

Display and Indications

Temperature: Filtered LED, 3 or

1

⁄2 digits, 2 readings per second update;

3
readability is 1.0° or 0.1° (°F or °C),
depending on model
Setpoint: By spring loaded switch, first
or second setpoint is displayed in place
of temperature; setpoint adjusted by
25 turn pot.; 1.0° or 0.1° setability
Outputs: LED indication for both first and
second setpoints; LED are “on” when
output drive signal present; “on-off”
indication on relay and triac model;
proportional intensity for option “F.”

Temperature Overrange:

Red LED indication

Setpoint

Resolution: 1.0° or 0.1° (°F or °C),

depending on model

Repeatability: ±0.1% to ±0.2% of span
Adjustment: By 25 turn pot.;

see “Setpoint” under “Display
and Indication” section.
Power: 120/240 Vac (+10%, -15%,
50/60 Hz). Power consumption
less than 5 watts

Environmental & Physical

Operating Temperature: -1 to 54°C

(30 to 130°F)

Weight: 1 kg (2 lb)

1

⁄4 DIN Case: Metal, full plug-in with

screw terminal on rear. Adjustable
brackets for panel mounting; panel
cutout is 92 x 92 mm (3.622 x 3.622")

Specifications and configurations subject to

*

change as advances in technology allow.

MOST POPULAR MODELS HIGHLIGHTED!

Sensor Accuracy Number of

Model No. Price Type Range Resolution ±1 Digit Setpoints

4201APF1
4201APC1 0 to 600°C 1°C

4202APF1
4202APC1 0 to 600°C 1°C

4201APF2
4201APC2 -199.9 to 199.9°C 0.1°C

4202APF2
4202APC2 -199.9 to 199.9°C 0.1°C

Accessories

Model No. Price Description
DPP-6 $575

GE-1315 55 Reference Book: Instrument Loop Diagrams

Comes complete with operator’s manual.

Ordering Examples: 4202APF1, RTD digital controller, $470. OCW-3, OMEGACARESMextends standard 2-year warranty to a total of 5 years,

$435

470

435

470

Platinum RTD

ohm/ohms/°C

1

⁄

4

100 ohm

α = 0.00385

DIN panel punch

($118) $470 + 118 = $588.
4201APC2, RTD digital controller, $435.

0 to 999°F 1°F

0 to 999°F 1°F

-199.9 to 199.9°F 0.1°F

-199.9 to 199.9°F 0.1°F

P-48

±0.1%

of Span

±0.2%

of Span

Single

Dual

Single

Dual

P