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CT7300-Series
Economical 2 Channel Circular Process Recorder
- Universal Input
- 2 Pen Circular Process Recorder, 254 mm (10' Chart)
- Quick, Easy Setup
- Easy-to-Replace Paper Chart with Magnetic Hub
Product Overview
- Accuracy ± 0.5 %
- Accuracy Detail Chart Recording: ±0.5% of span (100-division span)
- Alarm modes Active High Output, Active Low Output, Adjustable, Band, High/Low, Manual reset
- Approvals CE
- Battery life 48 hr
- Battery Size and Type Alkaline 9V
- Chart Diameter 254 mm
- Chart Speed Configurable—4, 8, 12, 24, 48 and 168 hours of rotation
- CMRR >120 dB @ 60 Hz
- Current Measurement Range 4 to 20 mA
- Cutout Dimensions 323 x 323 mm
- Deadband Set at 2 units; activation is safe-sided
- Height 356 mm
- Input Note Input Filtering: Up to 120 sec;Input Isolation: PV inputs isolated from all alarm outputs
- Length 97 mm
- Measurement Range Note Thermocouple: J: -130 to 760°C, K: -130 to 1370°C, T: -200 to 400°C, R: 0 to 1650°C, S: 0 to1649°C, B: 100 to 1824°C RTD: -210 to 440°C Current: 4 to 20 mA Voltage: 0 to 5 Vdc
- Measurement Type Thermocouple, RTD, Current, Voltage
- Mounting Vertical Mount (±20 Degrees), Horizontal Mount (±10 Degrees)
- Mounting Orientation ± 20 degrees of vertical, ± 10 degrees of horizontal
- Number of Channels 2
- Operating Temperature, Max 60 °C
- Operating Temperature, Min 0 °C
- Pen Type Ink Style
- Power Consumption 15 VA
- Relative Humidity 0 to 90% RH, non-condensing
- RTD Type 100 Ω Pt Sensor
- Sensor Break Detection Error Protection: De-Energized During Sensor Break; Sensor Break: <10 sec
- Series ID CT7300-Series
- Standard Limits of Error Error Limit: Cold-Junction Compensation Error: ±0.2°C/°F @ 25°C, Ambient Temperature Error Limit: 0.01% of span per °C
- Storage Temperature, Max 65 °C
- Storage Temperature, Min -40 °C
- Supply Power Note 110/220 Vac, 50/60 Hz
- Supply Power Type AC
- Supply Voltage 110/220 Vac
- Switch Rating 1 A @ 120 Vac
- Switch Rating Note DPDT, 1.0 A @ 120 Vac resistive
- Switch Type DPDT
- Temperature Measurement Range J: -130 to 760°C, K: -130 to 1370°C, T: -200 to 400°C, R: 0 to 1650°C, S: 0 to1649°C, B: 100 to 1824°C, RTD: -210 to 440°C
- Thermocouple Type J, K,T, R, S, B
- Vibration 0.3 to 100 Hz @ 0.2 g
- Voltage Measurement Range 0 to 5 Vdc
- Weight 3 kg
- Width 356 mm
- Wire Code Option 3- Wire
Supported Applications
The Omega CT7300 Series is an economical, microprocessor-based circular process recorder designed to measure and record up to two process variables on a standard 10-inch (254 mm) chart. The series supports recording applications requiring inputs from thermocouples (Types J, K, T, R, B, S), RTDs (Pt100 DIN), or linear signals including 4-20 mA and 0-5 Vdc.
Operating Conditions & Performance
The CT7300 Series operates within an ambient temperature range of 0 to 60°C (32 to 140°F) with a humidity rating of 0 to 90% RH non-condensing. Storage temperatures are rated from -40 to 65°C (-40 to 149°F). The unit is powered by 110/220 Vac, 50/60 Hz and includes battery backup for up to 48 hours of recording during power loss.
Performance specifications include a recording accuracy of ±0.5% of span (for a 100-division span) and cold junction accuracy of ±0.2°C/°F @ 25°C (77°F). Ambient error is specified as ±0.01% span/°C from 25°C ambient. The full-scale pen response time to sensor break is less than 10 seconds.
Input ranges supported by the series include:
- Type J: -130°C to 760°C (-202°F to 1400°F)
- Type K: -130°C to 1370°C (-202°F to 2498°F)
- Type T: -200°C to 400°C (-328°F to 752°F)
- Type B: 100°C to 1824°C (212°F to 3315°F)
- Type R: 0°C to 1650°C (32°F to 3002°F)
- Type S: 0°C to 1640°C (32°F to 3000°F)
- Pt100 (DIN): -210°C to 440°C (-346°F to 824°F)
- Linear: 4 to 20 mA and 0 to 5 Vdc
Configuration Options
The series is available in three primary configurations based on alarm relay integration:
- CT7310: Dual Pen Recorder without alarms.
- CT7311: Dual Pen Recorder with Alarm Relay for Pen 1.
- CT7312: Dual Pen Recorder with Alarm Relays for both Pen 1 and Pen 2.
Housing options include a standard NEMA 12X enclosure or an optional NEMA 4 (IP65) rated case, specified by adding "-NEMA" to the model number. An optional LED display indication is available for models with the suffix "-D".
Alarm relays are programmable for process, band, non-latching, or latching operation. The relay output is DPDT, 1.0 A @ 120 Vac resistive, with hysteresis set at 2 units and safe-sided activation. Error protection includes de-energization during sensor break.
Additional features include built-in chart lights for visibility in low-light conditions and a magnetic hub for easy paper replacement. The unit dimensions are 356 H x 356 W x 97 mm D (14 x 14 x 4") with a weight of 3 kg (7 lb).
Key Product Differences
The CT7300 Series distinguishes itself through configurable alarm capabilities and enclosure ratings. The base model, CT7310, provides dual-pen recording without relay outputs. Models CT7311 and CT7312 add programmable DPDT relays for one or two channels respectively.
Enclosure variations allow selection between the standard NEMA 12X rating and a more robust NEMA 4 (IP65) option, which is added to the model number as "-NEMA". The optional LED display suffix "-D" provides digital indication alongside the analog chart recording.
Replacement parts include red pens (P/N CT7300-RED), green pens (P/N CT7300-GREEN), and standard circular charts (P/N CT7000C series). Custom range paper is available via P/N CT7000C-CUSTOM.
PDFs & Manuals
