CL514-Plus 4 Wire RTD Auto-Connect Display Calibrator & Thermometer
Automated Universal RTD Calibrator
Supported Applications
The Omega CL514-PLUS is an automated universal RTD calibrator designed for checking, calibrating, and measuring Resistance Temperature Detector (RTD) sensors. The device functions as both a simulator and a measurement instrument, outputting simulated RTD signals while simultaneously reading sensor values in °C or °F.
Documented compatibility includes integration with smart transmitters, PLCs, DCS systems, and multichannel recorders for field verification tasks.
Operating Conditions & Performance
The CL514-PLUS supports 2, 3, or 4 wire electrical connections. Measurement capabilities cover multiple RTD types including Platinum 100 (alpha = 3850, 3926, 3902, 3750), Copper 10 & 50 Ohm, and Nickel 100 & 120 Ohm. The display resolution is specified as 0.1° (or 0.01/0.1 ohm).
Power is supplied by four 'AA' 1.5V alkaline batteries. A low battery condition is indicated by a 'BAT' symbol on the display, and approximately one to four hours of typical operation remain before the unit automatically turns off.
Configuration Options
The series features an adjustable digital potentiometer ('DIAL') for precise output control. The enclosure includes a rugged rubber boot for protection and a backlit display intended for use in dark areas.
• Auto-Stepping: Supports automatic output stepping with selectable step sizes of 2, 3, 5, 11, or 21 steps. Step times are configurable at 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, or 60 seconds.
• Configuration Menu: Includes settings for EXIT (default 15), TEMP UNITS (°C/°F selection), RTD type (e.g., Pt 100 α=3850), BACKLIGHT control, STEPS count, STEP TIME duration, and AUTO OFF status.
• Data Retention: Removing the batteries resets values to factory defaults.
Key Product Differences
The CL514-PLUS is manufactured in the USA and carries a 3-year warranty. The product line includes ISO 9001 certification for facilities in Stamford, CT, and Manchester, UK. A specific warning states that these products are not designed for use in human applications.
| Accuracy | ± 0.025 % |
| Accuracy Detail | ± (0.025% of reading + 0.05 Ω) |
| Additional Features 1 | Read & Source Signals |
| Battery Indication | A low battery indication is displayed when the battery voltage drops below the operating level |
| Battery life | 50 hr |
| Display Type | LCD |
| Display Type Note | High contrast graphic liquid crystal display, LED backlighting for use in low lit areas |
| Height | 40.64 mm |
| Length | 143 mm |
| Operating Temperature, Min | -25 °C |
| Operating Temperature Note | Nominal Temperature: 23°C |
| Protection | Over-voltage protection to 60 V dc (rated for 30 seconds) (Protection against misconnection) |
| Relative Humidity, Max | 0.9 |
| Relative Humidity, Min | 10% |
| Relative Humidity Note | 10% ≤RH ≤90% (0 to 35°C), non-condensing 10% ≤RH≤ 70% (35 to 60°C), non-condensing, Nominal Relative Humidity: 70% |
| Series ID | CL514-PLUS-series |
| Supply Voltage | 1.5 Vdc |
| Temperature Drift | ± 0.01% |
| Temperature Drift Note | ± 0.01% of span outside of 23°C ± 10°C (73°C ± 18°F |
| Thermocouple Type | N/A |
| Type of RTD Signal | 100 Ω, 1000 Ω |
| Voltage Read | Excitation Current: 0.5 mA nominal Normal Mode Rejection: 50/60 Hz, 50 dB Common Mode Rejection: 50/60 Hz, 120 dB |
| Voltage Source | Accuracy From 1 to 10.2 mA External Excitation Current: ± (0.025% of Reading + 0.05 Ω) Below 1 mA of External Excitation Current: ± (0.025% of Reading + 0.025 mV/ mA Excitation Current + 0.05 Ω) Resistance Ranges: 0.00 to 410.00, 410.1 to 2001.0 Ω Allowable Excitation Current Range: <410 Ω: 10.2 mA max; steady or pulsed/intermittent 410 to 2001 Ω: 1 mA max; steady or pulsed/intermittent Pulsed Excitation Current Compatibility: DC to 0.01 second pulse width |
| Weight | 12.1 oz |
| Weight Note | 12.1 oz (including boot and batteries) |
| Width | 76.2 mm |