CL515-Plus High Accuracy RTD Auto-Connect Display Calibrator & Thermometer
Universal RTD Calibrator
Supported Applications
The Omega CL515-PLUS series is a handheld device designed for checking, calibrating, and measuring Resistance Temperature Detector (RTD) sensors. The unit functions as an automated RTD calibrator capable of simulating resistance outputs to verify system performance.
Documented applications include compatibility with smart transmitters, PLCs, DCS systems, and multichannel recorders for calibration verification tasks.
Operating Conditions & Performance
The CL515-PLUS series provides RTD measurement accuracy of ±0.05 °C (±0.09 °F) and Ohms measurement accuracy of ±0.01 Ω. Resolution is specified as 0.1 °C, 0.1 °F, or 0.01 Ω.
Measurement ranges cover:
• RTD Temperature: -200 to 850 °C and -328 to 1562 °F
• Ohms (Source/Read): 0 to 400 Ω and 0 to 2000 Ω
The device 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 Options
The series features a rugged design with a protective rubber boot and a backlit display. It automatically detects electrical connections for RTD sensors configured in 2-wire, 3-wire, or 4-wire arrangements.
Sensor Types Supported:
• Platinum 100 (α=3850, α=3902, α=3926)
• Platinum 1000 (α=3850, α=3750)
• Copper 10 & 50 Ohm
• Nickel 120 Ohm
Output and Display Options:
• Outputs in °C, °F, or ohms (simulated resistance)
• Automatic indication of connection type
• Battery symbol on display indicates low battery status
Power and Configuration:
• Powered by 4 x AA 1.5V Alkaline batteries (supplied)
• Configuration menu includes Auto Off, Backlight control, Steps selection, and Step Time settings
• Removing the batteries resets all stored configuration options to factory defaults
Key Product Differences
The CL515-PLUS series is manufactured in the USA and carries a 3-year warranty. The product holds CE approval, and Omega Engineering maintains ISO 9001 certification for facilities in Stamford, CT and Manchester, UK.
| Accuracy | ± 0.015 % |
| Accuracy Detail | ± (0.015% of reading + 0.05 Ω) |
| Additional Features 1 | Source Only |
| 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 | 41 mm |
| Length | 143 mm |
| Operating Temperature, Min | -25 °C |
| Operating Temperature Note | Nominal Temperature: 23°C |
| 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 | CL515-PLUS-series |
| Supply Voltage | 6 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 |
| 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 ± (0.015% of Reading + 0.05 Ω) Below: 1 mA of external excitation Current: ± (0.015% of reading + 0.025 mV/mA excitation current + 0.05 Ω) Resistance Ranges: 0.00 to 410.00, 410.1 to 4001.0 Ω Allowable Excitation Current Range <41Ω: 10.2 mA maximum; steady or pulsed/intermittent 410 to 4001Ω: 1 mA maximum; steady or pulsed/intermittent Pulsed Excitation: Current compatibility DC to 0.01 second pulse width 0.025 mV |
| Weight | 0.34 kg |
| Weight Note | 0.34 kg (12.1 oz) including boot and batteries |
| Width | 76 mm |