CT7000-Series

1 or 2 Channel Programmable Universal Input Circular Recorders

Models In Stock

1 or 2 Pen Versions, 250 mm (10') Chart
mv, V, mA, Thermocouple or RTD Inputs
Programmable Inputs
Optional Alarms

See Product Overview

CT7000-Series

From ^TWD 116,027

Models In Stock

Shop Models

1 Variations available

See all series options below

Data Sheet

Product Overview

Alarm modes Active High Output, Active Low Output, Adjustable
Battery life up to 5 yr
Chart Diameter 254 mm
Chart Note Chart Span: Bottom and top of span, -9999 to 9999 units; Chart Drive: DC Stepper Motor; Chart Drive: Stepper Motor
Chart Speed 0.1 to 999.9 Hours
CMRR 90 dB minimum; 24 Vac maximum for RTD input; 15 Vac maximum for other inputs
Current Measurement Range 4 to 20 mA
Cutout Dimensions 321 x 343 mm
Deadband Recording: 0.3%
Display Note Digital Displays: 2 possible: 1 per installed pen; (4) 7-segment digits, 14 mm (0.56”) high, red LEDs, automatic (-) positioning, decimal point positioning Keypad: Located on front cover, tactile feedback membrane keys, Display/Record Filter: 1 to 20 Scans. Alarm Display: 2 alarm indications possible per pen; ALRM1 and ALRM2; red LEDs; single ALRM indication provided for controller pens
Display Type LED
EMC Standard IEC 61000-4-2
Filter 1 to 20 Scans
Height 335 mm
LED Indicators LED indicates Out 1, Out 2, Man, Ramp, Soak, Seg 1 through Seg 6, process units as applicable
Length 92 mm
Materials Plexiglass
Measurement Range Note Thermocouple: J: 0 to 760°C, K: 0 to 1360°C, T: -220 to 400°C, E: 0 to 750°C, N: 0 to 1300°C, R: 200 to 1650°C, S: 200 to 1650°C, B: 200 to 1800°C, C: 200 to 2300°C RTD: -140 to 400°C Current: 4 to 20 mA Voltage: 0 to 25 mV, 0 to 50 mV, 10 to 50 mV, 0 to 5 V, 1 to 5 V
Measurement Type Thermocouple, RTD, Current, Voltage
NMRR 85 db @ 60 Hz or greater
Operating Temperature, Max 55 °C
Operating Temperature, Min 0 °C
Pen Type Disposable Fiber tip
Power Consumption 25 VA
Relative Humidity 0 to 90% RH, non-condensing
Resolution Pen Resolution: 0.15%
Response Time 20 sec
RTD Type 100 Ω Pt sensor; α= 0.00385
Sampling Rate 1 Scan/sec
Sensor Break Detection Sensor Fault Detection: Displays “Hi” or “Lo” process input (10% above or below range) and sensor break “SnSr”; pen action on error condition is user configurable to 0 or 100% of chart span; on/off outputs go “off”; proportional outputs go to user-defined value from 0 to 100%
Series ID CT7000-Series
Standard Limits of Error Error Limit: Measurement Error Limit: Thermocouple Types J, K, T, E, N and RTD: ±0.25% of reading + 1° @ 25°C (77°F); Type R, S, B, C Thermocouples: ±0.25% of span @ 25°C (77°F); mVdc and Vdc: ±0.25% of scaled span plus 1 least-significant digit Ambient Temperature Error Limit: 0.01% of span per °C (1.8°F) deviation from 25°C (77°F) Process Value Output Error Limit: ±0.5% of span Record Error Limit: ±0.5% of chart span or better, typically; ±1.0% of chart span maximum; Calibration Shift: Self-compensating for ambient temperature; all calibration values are stored in memory; Process Value Output Error Limit: ±0.5%; Record Error Limit: ±0.5%
Storage Temperature, Max 65 °C
Storage Temperature, Min -40 °C
Supply Power Note 115 Vac ±10%, 50/60 Hz
Supply Power Type AC
Switch Rating 2 A @ 115 Vac, 1 A @ 230 Vac
Switch Type SPST
Temperature Measurement Range J: 0 to 760°C, K: 0 to 1360°C, T: -220 to 400°C, E: 0 to 750°C, N: 0 to 1300°C, R: 200 to 1650°C, S: 200 to 1650°C, B: 200 to 1800°C, C: 200 to 2300°C, RTD: -140 to 400°C
Thermocouple Type J, K, T, E, N, R, S, B, C
Vibration 0.5 to 100 Hz @ 0.2 g
Voltage Measurement Range 0 to 25 mV, 0 to 50 mV, 10 to 50 mV, 0 to 5 V, 1 to 5 V
Weight 9.1 kg
Width 384 mm
Wire Code Option 2- or 3- Wire

Supported Applications

The Omega CT7000 Series consists of microprocessor-based circular chart recorders designed to measure, display, and control up to two process variables. These hybrid paper recorders are configured for applications requiring continuous data logging on a 254 mm (10") circular chart alongside digital monitoring via front-panel LED displays.

Documented measurement capabilities include temperature sensing using thermocouples or RTDs, as well as electrical signal acquisition from millivolt and current inputs. The series supports process control functions including on/off and PID control in specific model configurations.

Operating Conditions & Performance

The CT7000 Series operates within an ambient temperature range of 0 to 55°C (32 to 131°F) with a humidity rating of 0 to 90% RH, non-condensing. Storage temperatures are specified from -40 to 65°C (-40 to 149°F). The unit features a gasketed cover constructed from black structural foam and weighs up to 9.1 kg (20 lb).

Performance specifications vary by input type:

Thermocouple Types J, K, T, E, N and RTD accuracy: ±0.25% of reading + 1° @ 25°C (77°F)
Type R, S, B, C Thermocouples accuracy: ±0.25% of span @ 25°C (77°F)
mVdc and Vdc accuracy: ±0.25% of scaled span plus 1 least-significant digit
Ambient Temperature Error Limit: 0.01% of span per °C (1.8°F) deviation from 25°C (77°F)
Record Error Limit: ±0.5% of chart span or better, typically; ±1.0% of chart span maximum
Pen Response (Full Scale Deflection): 20 s

The recorder supports a vibration rating of 0.5 to 100 Hz @ 0.2 g.

Measurement Ranges by Input Type

Type J: 0 to 760°C (0 to 1400°F)
Type K: 0 to 1360°C (0 to 2500°F)
Type T: -220 to 400°C (-330 to 750°F)
Type E: 0 to 750°C (0 to 1400°F)
Type N: 0 to 1300°C (0 to 2370°F)
Type R, S: 200 to 1650°C (400 to 3000°F)
Type B: 200 to 1800°C (400 to 3300°F)
Type C: 200 to 2300°C (390 to 4170°F)
RTD: 100 Ω (0.00385 Ω/Ω/°C), -140 to 400°C (-220 to 750°F)
Voltage DC: 0 to 25 mV, 0 to 50 mV, 0 to 5 V, 1 to 5 V

Resolution and Output Limits

T/C and RTD Resolution: 0.1 or 1°
mVdc and Vdc Resolution: 0.001, 0.01, 0.1 or 1
Process Value Output Error Limit: ±0.5% of span
Load Resistance (Current Outputs): 0 to 20 mA DC or 4 to 20 mA DC into 650 Ω max

Configuration Options

The CT7000 Series is available in configurations supporting one or two recording pens, with options for alarm relays and control functionality. The recorder accepts isolated inputs and features user-configurable alarm settings including hysteresis adjustment.

Power Supply: 115/230 Vac ±10%, 50/60 Hz
Housing Material: Gasketed cover; black, structural foam
Display: 4-digit LED displays per pen
Chart Size: 254 mm (10") circular chart
Digital Communications: Optional

Available Output Signals

SPST relay output
SSR driver output
4 to 20 mA DC (user configurable to 0 to 20 mA DC) for retransmitting the process value or control

Accessories and Consumables

Pens: CT7000-RED (channel 1 only), CT7000-GREEN (channel 2 only)
Circular Paper: CT7000C series, available in various range/time configurations
Probes: Low-noise thermocouple probes sold separately (e.g., GKQSS-316G-12, GTQSS-316G-12)