
Microprocessor-Based 
Circular Chart Recorders
CT9000 Series
Starts at
$
2137
⻬ 1-, 2-, 3-, or 4-Pen Version 
⻬ Programmable for 254, 280, or
305 mm (10, 11, or 12") Charts
⻬ Accepts Thermocouple, RTD,
V, mV, mA, or Switch Signals
⻬ 40-Character Display 
⻬ Up to 4 Alarms per Variable 
⻬ 16 Profiles
The CT9000 microprocessor-based 
circular recorder offers 1 to 4 trends with 
1 color per channel. The latter allows 
future trend addition upgrades and 
improves chart annotation of times, 
dates, scale values, trend line tags, and 
user-configurable real-time actuated 
chart messages. This instrument can 
accept up to 8 inputs. Some inputs do 
not have to be associated with the trend 
pens (i.e., display only). Up to 4 process 
values can be displayed at one time on 
the 40-character vacuum fluorescent 
display (2 lines of 20 characters each). 
Full English prompts allow easy 
configuration. With the recorder’s proven 
dotting head print technology, there is 
no time difference between trend lines. 
This feature, along with the straight 
radial time line (compared with the curved 
lines on other recorders) allows for more 
accurate reading of data. The unit uses 
plain paper charts with pre-printed rings 
to further enhance readability and 
provide better long-term storage.
Specifications
General
T/C Accuracy: Typically 1°C (1.8°F) 
Chart Accuracy: 0.3% of span 
Chart Rotation Accuracy:
0.2 minutes for 24 hours
Ambient Temperature Error:
±0.01% of span per °C (1.8°F) 
deviation from 25°C (77°F)
Isolation: 500 Vdc/350 Vac 
CMR: 120 dB minimum 
NMR: 100 dB @ 60 Hz or greater 
Scan Rate: 2 scans/s on each input 
Operating Temperature:
0 to 50°C (32 to 122°F)
Storage Temperature:
-40 to 65°C (-40 to 149°F)
Humidity: 10 to 90% RH, non-condensing 
Vibration: 0.3 to 100 Hz @ 0.2 g
Remember to 
Order Extra 
Paper and Pens!
CT9144,
$3453, shown
smaller than
actual size.
Line Voltage: 90 to 264 Vac, 50/60 Hz 
Power Consumption: 60 VA max 
Enclosure: Gasketed cover, 
case and window.
NEMA Rating: NEMA 3 (IP54) 
Mounting: Panel or optional wall
mounting
Mounting Position:
Up to 30° forward or backward tilt from 
vertical; up to 10° side tilt from vertical
Overall Dimensions:
358.65 W x 425.96 H x 196.85 mm D 
(14.12 x 16.77 x 7.75") 
Panel Cutout: 322.58 W x 
322.58 mm H (12.7 x 12.7") 
Panel Depth: 133.35 mm (5.25") 
Panel Protrusion: 63.5 mm (2.5") 
Weight: 11.34 kg (25 lb) 
Clock Accuracy: 1 min/month typically, 
4 min/month worst case 
Battery Backup: 5 years min, 
10 years typically; lithium battery 
(included)
Operator Interface
Display: 2-line, 40-character VFD with 
5 mm (0.21") high characters 
Status Indicator: 8 user configurable, 
red LED status indicator 
Keypad: 15 keys for programming and 
unit operation
Display Formats: 3 
Operator Messages: 12 
Operator Inputs: 12
Recording
Pen Type: Disposable 4-pen fiber-tip
marker assembly
S-137
Pen Colors: Red, green, blue, black 
Chart Drive: DC stepper motor 
Chart Size: Programmable for 
10-, 11- or 12-inch charts (12-inch 
charts are actually 11.875") 
Chart Rotation:
6 to 9999 hours per revolution 
Recorded Values: Any of over 20 values 
can be trended/recorded
Recording Methods:
Drag pen simulation, instantaneous 
value, connect the values, average 
value, connect the averages 
Action on New Chart: Print scales and 
range list, begin normal recording
Chart Messages: 12
Input Ranges
Thermocouple
J: -200 to 1200°C (-328 to 2192°F) 
K: -250 to 1370°C (-418 to 2498°F) 
E: -250 to 1000°C (-418 to 1832°F) 
N: -250 to 1300°C (-418 to 2372°F) 
T: -250 to 400°C (-418 to 752°F) 
R: 200 to 1700°C (392 to 3092°F) 
S: 250 to 1750°C (482 to 3182°F) 
B: 200 to 1800°C (392 to 3272°F) 
G: 0 to 2300°C (32 to 4172°F) 
C: 0 to 2300°C (32 to 4172°F)
D: 0 to 2300°C (32 to 4172°F) 
NNM: 0 to 1370°C (32 to 4172°F) 
PLATINEL II: 0 to 1400°C (32 to 2552°F) 
RTD: -200 to 480°C (-328 to 896°F)
100 Ω platinum with 385 curve 2- or 
3-wire, also available with 392 curve 
or 100 Ω nickel 
Volts DC: To 25 mV, 0 to 100 mV, 
0 to 1V, 0 to 10V
 

mA DC: 0 to 20 mA or 4 to 20 mA with
Extended Warranty
Program
SM
internal 50 Ω shunt
Contact Closure:
Open/closed switch sensing without 
external voltages or resistors 
Processing: Square root and 
exponential functions for linear inputs 
Value Cutoff: None, at value, to zero 
below value, to zero near zero 
Measurement Error: ±0.025% of 
measurement span reference accuracy
Cold-Junction Compensation 
Accuracy: ±0.2°C @ 25°C 
(±0.36°F @ 77°F)
Cold-Junction Compensation 
Rejection:
0.04°/° deviation from 25°C (77°F)
Thermocouple Linearization Error:
±0.25°C (1.45°F) typical, ±0.5°C (0.9°F) 
worst case with exceptions; RTD: 
±0.1°C (0.18°F) typical, ±0.3°C (0.54°F) 
worst case 
Sensor Fault Detection: Sensor break 
on all T/Cs, RTDs, 1V, 1 to 5V, 4 to 
20 mA and mV ranges; sensors high 
and low on all inputs, 5% above or 
below range
Sensor Break: Up-scale or down-scale
On/Off Outputs
On/Off Actuators:
Any of over 100 digital values/states 
can be used to actuate on/off outputs 
Relays: SPDT contacts rated 
5 A resistive @ 115 Vac
Solid State Relays:
Open-collector output, can provide 
40 mA @ 3 Vdc or 20 mA @ 4 Vdc 
Pulsed Outputs: 50 ms pulse when 
used with totalizer pulsed outputs
Current Outputs
Drivers: Any of 20 values can be used 
to drive analog outputs
Output Span:
To 20 mA or 4 to 20 mA, nominal
Resolution: 
12 bits based on 0 to 25.6 mA span
Accuracy: ±0.1% of 20 mA span 
Compliance: 650 Ω load 
Totalizers:
Number: 4 are included in the option 
Digits: 9, displayable with or 
without commas 
Types: Continuous, prelude count 
down, and pulse counting
Presets: 1 per totalizer
Pulsed Outputs: Fully configurable
computing capabilities
Derived Variables: 12 
Math Functions: Add, subtract,
multiply, divide, average, exponential, 
log 10, log e, power 10, power e 
Built-In Equations: Linear, polynomial, 
°C to °F, °F to °C, linear mass flow, DP 
mass flow, BTU, RH, FO, ZrO 
Other Functions: High select, low 
select, high peak, low peak, track and 
hold, 1 of 2 selector, convert actuator 
Custom Curves: Four 20-point curves, 
usable in multiple calculations
2
Logic Capabilities
Actuators:
Over 100 digital values are accessible
Derived Actuators:
24 combinations of 24 items
Logic Operators:
NOT, OR, AND, parentheses
Timers: 4 
Time/Date Combination Actuators: 6
Alarms
Number: Up to 4 alarms for each of 
4 process variables 
Type: Process high or low, 
rate rising or falling 
Hysteresis: Fully adjustable
OMEGACARESMextended warranty 
program is available for models shown on 
this page. Ask your sales representative 
for full details when placing an order. 
OMEGACARE 
equivalent loaners.
SM 
covers parts, labor and
CT9173, $3224, shown 
smaller than actual size.
MOST POPULAR MODELS HIGHLIGHTED
To Order (Specify Model Number)
Model No.* Price Description
CT9111 $2137 1-pen, 1-color recorder with 1 input 
CT9122 2507 2-pen, 2-color recorder with 2 inputs 
CT9133 2951 3-pen, 3-color recorder with 3 inputs 
CT9144 3453 4-pen, 4-color recorder with 4 inputs 
CT9151 2765 1-pen, 4-color recorder with 1 input 
CT9162 2995 2-pen, 4-color recorder with 2 inputs 
CT9173 3224 3-pen, 4-color recorder with 3 inputs
Options
Order Suffix  Price Description
-AL** Below 2, 4, 6 or 8 relay outputs
-SR** Below 2, 4, 6 or 8 SSRs
-MA1  $184 One 4 to 20 mA output
-MA2  368 Two 4 to 20 mA outputs
-MT1 265 Math (computing and logic capabilities)
-MT2  250 Totalizer
-MT3 500 Math and totalizer
-EN3 40 Plastic window (glass is standard)
Number of relays or SSRs and prices respectively: 2: $140; 4: $240; 6: $380; 8: $480.
**
Total relays and SSRs may not exceed 8.
Accessories
Model No. Price Description
CT9000C-RC-GR $48  Pen cartridge—green/red 
CT9000C-RC-GRB 52 Pen cartridge—green/red/blue 
CT9000C-RC-GRBB 56 Pen cartridge—green/red/blue/black 
CT9000C-12-100 28 Paper, 305 mm (12"), 100 div. 100 sheets 
CT9000C-12-70 21 Paper, 305 mm (12"), 70 div. 100 sheets 
CT9000C-10-100 18 Paper, 254 mm (10"), 100 div. 100 sheets 
CT9000C-11-100 19 Paper, 280 mm (11"), 100 div. 100 sheets 
CT9000-WALL 24 Wall mounting brackets
Comes complete with a package of charts, pen cartridge and operator’s manual. 
Ordering Examples: CT9111, single-pen programmable recorder, $2137. 
For additional universal inputs, change last digit of base number to 2, 3, 4, 6, or 8, representing
*
the total number of inputs, and add $210 per input beyond standard number offered 
(e.g., CT9144, 4-pen recorder with 4 inputs, $3453. OCW-1 OMEGACARESMextends 
standard 2-year warranty to a total of 3 years ($150), $3453 + 150 = $3603.  
CT9151, 1-pen, 4-color recorder, $2765.
S-138
S
 

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