Omega CT6100 Specification

Microprocessor-Based Circular
Chart Recorder

CT6100 Series

U Accepts Thermocouple,

RTD, Vdc, and
mA DC Inputs

U High Accuracy

and Stability

U User Configurable via

Front-Panel Keypad

U Easy-to-Use

Menu-Driven Interface
for Rapid Configuration
and Calibration

U Available in 1-, 2-, or

3-Pen Versions

U Large-Character

Alphanumeric LCD
with Backlight

U Simultaneous Digital

Display of Process
Variable for
Each Channel

U Programmable

Locks for Security

CT6103 shown smaller than actual size.

The CT6100 Series microprocessor­based circular chart recorders are
available in 1-, 2-, or 3-channel
variants. They combine the simplicity
and clarity of pen drawing with the
versatility of microprocessor control.
Each channel is compatible with all
industry-standard sensors and signals,
including thermocouple Types J, K,
T, E, N, R, S, and B; Pt100 platinum
RTDs; and 4 or 20 mA current loops.

Low and high measurement
ranges are provided for each input
type; separate range cards are not
required. Multi-input versions feature
optoelectronic isolation of the input
stages to eliminate troublesome
installation ground loops. Multislope
integrating 16-bit A/D converters
ensure precise measurement by
sampling the input every 0.5 seconds.

Thermocouple and RTD
characteristics are fully linearized.
The recorders use automatic
cold-junction compensation for
thermocouple measurement.

All CT6100 Series models feature
alarm relays. Single-pen recorders
are equipped with 3 fail-safe single­pole changeover relays; 6 relays
are standard on the 2- and 3-pen
versions. Color-coded LEDs indicate
the status of each relay. All relay
functions are user selectable;
setpoint values and hysteresis
levels are entered directly via the
keypad, while relay action and
channel assignment are selected
from user-friendly menus. Circuit
precision is matched by the
backlash-free pen-drive mechanism,
which has a positioning resolution

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greater than 0.1%. An integral
feedback potentiometer enables
closed-loop monitoring
of each pen position.

Each recorder uses a low-maintenance
stepper motor. The rotation speed
of the 244 mm diameter chart is
microprocessor controlled and user
programmable.

All CT6100 recorders are housed in
a strong molded case that can be
panel or surface mounted. A
gasket-lockable door protects
internal components from harsh
industrial environments and offers
protection rated to NEMA 12 (IP55).
A tough acrylic window lets the user
view the chart trace, digital channel
readings, and alarm status with the
recorder’s door closed.

Don’t Forget

to Order Additional

Recorder Paper!

Specifications

Inputs

Input Types: Thermocouple K, T,

J, N, E, B, R, S; Platinum RTD (Pt100)
3-wire; ±2V, +20 Vdc; ±2 mA, ±20 mA

Input Ranges: Thermocouples to
BS4937 (type B minimum temp 200°C);
RTD to BS1904:1984

Cold Junction Compensation:
Automatic; ±0.02°C/°C stability

Input Resistance:
Thermocouple: 10 MΩ
±2 mA: 200 Ω
±20 mA: 20 Ω
±2V, ±20V: >1 MΩ

Min Span: 5°C (9°F), thermocouples K,
J, T, E, N and RTD; 50°C (90°F) other
thermocouple types, 50 mV, 200 mA

T/C BURN-OUT: Pull-up or
pull-down, selectable

RTD Lead Resistance:
3-wire, compensated up to 10 Ω
maximum per lead

Input Protection: ±50 Vdc on
signal inputs

Input Isolation: Optoelectronic on
2 and 3 input models 500 Vrms channel­to-channel, 500 Vrms channel-to-ground

Sensor/Transmitter Power:
12 or 24 Vdc, 25 mA, selectable;
for current loop inputs

Performance
Accuracy:

RTD, Low Range (-200 to 200°C):
±0.2°C
RTD, High Range (200 to 850°C):
±0.8°C
Thermocouple: ±0.25% full scale
Voltage/Current: ±0.2% full scale
Temperature Stability:
±0.02% FS/°C
Linearization Accuracy:
T/C Types J, K, T, N, E: ±0.1°C,

-50 to 200°C, ±1°C maximum
T/C Types R and S: ±0.2°C,

-50 to 200°C, ±1°C maximum
T/C Type B: ±1°C maximum
RTD: ±0.1°C, -200 to 850°C

Calibration Shift: ±10°C user
programmable to eliminate sensor errors
(thermocouple and RTD)

Chart and Display

Chart Size: 244 mm (9.6") diameter;

40, 50, 60, 70 or 80 linear divisions

Chart Drive: DC stepper motor
Chart Speeds: 1 to 24 hours in steps of

one hour, 2 to 31 days in steps of 1 day
Writing Method: Disposable ink

cartridges; pen 1-red; pen 2-green;
pen 3-blue

Pen Positioner: DC stepper motor
Positioning Resolution:

>0.1% full scale
Response Time:

Zero to full scale in 4.5 seconds
Pen Lift: Powered, activated from front

panel; chart fast time advance possible
with pens raised

Display: 2 line x 20 character dot
matrix liquid crystal with backlight and
automatic temperature compensation;

9.6 mm (0.37") character height
Display Resolution:

0.1°C for temperature inputs, software
programmable for voltage/ current inputs

Alarm Display: Relay status shown by
red and green front panel LEDs

Relays

Type: SPDT; 30 Vdc or 250 Vac @

6 A maximum; 150 W DC, 1660 Vac
non-inductive

Action: Software selectable from: high
alarm/low alarm/deviation alarm/control
relay (high)/control relay (low); relays
de-energize in alarm state; assignable to
any channel

Hysteresis: User programmable

0.0 to 10% span
Snubber Network: 22 nF and

100 Ω across each contact

To Order

Model No. Description

Visit omega.com/ct6100 for Pricing and Details

Analog Output (Option)
Type: 0 to 20/4 to 20 mA; assignable to

any channel; range selectable within any
segment of chart range

Resolution: 12-bit
Compliance: 20V approx
Isolation: Optoelectronic
Action: direct or reverse

General

Security: 3-level software lock including

password protection, internal hardware
jumper lock, lockable door

Power: 115 or 230 Vac ±10%,
switch selectable, 50/60 Hz: terminal
block connection

Power Requirements: <25 W
Operating Ambient: 0 to 55°C

(32 to 131°F), 0 to 90% RH
(non condensing)

Case: Steel, with glass-filled polyester
resin door with acrylic window

Protection: NEMA 12 (IP55)
Mounting: Panel or surface
Dimensions: 336 W x 396 H x 171 mm D

(13.2 x 15.6 x 6.7")
Weight: From single pen: 7 kg

(15.4 lb) to three pen: 7.7 kg (17.0 lb)
Panel Cutout: 288 W x 356 mm H

(11.3 x 14.0")

SM

Extended Warranty

Program

OMEGACARESM extended warranty program

is available for models shown on this page.

Ask your sales representative for full details

when placing an order. OMEGACARE

covers parts, labor and equivalent loaners.

CT6101 1-pen recorder with 3 relays and transmitter power supply

CT6102 2-pen recorder with 6 relays and transmitter power supply
CT6103 3-pen recorder with 6 relays and transmitter power supply

Accessories

Model No. Description

CT6100-RED Red pens, pack of 3

CT6100-GREEN Green pens, pack of 3
CT6100-BLUE Blue pens, pack of 3
CT6100-0-100/24H 100 chart papers, 24 hours
CT6100-0-100-31D 100 chart papers, 31 days
POWERCORD-SE Power cord with one end stripped

Option*

Order Suffix Description

-PV

assignable to any channel

Option is not field installable. It must be ordered at the time of purchase.

*

Comes complete with 1 package of 24 hour chart paper, pen(s) and operator’s manual.

Ordering Example: CT6101, 1-pen recorder with 3 relays and transmitter power supply and
POWERCORD-SE, power cord.

OCW-3, OMEGACARESM extends standard 1-year warranty to a total of 4 years.

Analog output of 0 to 20 mA or 4 to 20 mA,

SM

S

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