CheckPoint TOC Sensor Specifications

Total Organic Carbon1
Linear Range (CheckPoint Pharma) 0.21 ppb to 1,000 ppb C
Linear Range (CheckPointe) 0.05 ppb to 1,000 ppb C
Instrument Accuracy2 ± 5% when measuring 500 ppb C of sucrose2,3
Precision (CheckPoint Pharma) The greater of < 1% RSD or 0.21 ppb for on-line measurements, 3.0% RSD at 500 ppb for grab samples
Precision (CheckPointe) The greater of < 1% RSD or 0.05 ppb for on-line measurements, 3.0% RSD at 500 ppb for grab samples
Analysis Modes On-line (average or timed); grab (with optional Vial Sampling Kit)
Analysis Time Selectable: 15 seconds to 8 hours on-line mode; 10 minutes grab mode
Ozone Compatibility (CheckPoint Pharma only) 50 ppb O3; 200 ppb O3 for 2 hours daily
Conductivity/Resistivity
Conductivity/Resistivity Range for TOC Max 1.4 μS/cm or Min 0.7 Mohm-cm from CO24
Conductivity/Resistivity Precision ± 0.5% RSD (20-40 °C or 68-104 °F)
Conductivity/Resistivity Accuracy ± 2.0%
Sensor Specifications
On-Line Sample Pressure 103–690 kPa (15–100 psig) (1.0–6.9 bar)
Low Pressure Samples -6.9–55 kPa (-1.0–8 psig) (-0.069–0.55 bar) with optional Low Pressure Sampling Kit
Required Sample Line Flow Rate 60 mL/min (high pressure) or 1 mL/min (low pressure
Power Requirements 100-240 ± 10% VAC, 60 W, 50/60 Hz, or battery
Temperature (CheckPoint Pharma) Sample: 10-90 °C (50-194 °F); Ambient: 10-55 °C (50-131 °F)3
Temperature (CheckPointe) Sample: 10-60 °C (50-140 °F); Ambient: 10-40 °C (50-104 °F)
Humidity 90% (80% with battery)
Altitude 3000 meters
Outputs Ethernet (Modbus TCP/IP), USB, plus two 4-20 mA, two alarms, and binary input with optional I/O board
Installation/Overvoltage Category II
Dimensions H: 25.40 cm (10.0 in); W: 30.48 cm (12.0 in); D: 15.24 cm (6 in)
Dimensions with Vial Sampling Kit H: 25.40 cm (10.0 in); W: 34.87 cm (13.7 in); D: 15.24 cm (6 in)
Weight — CheckPoint 2.9 kg (6.4 lb) without battery; 3.58 kg (7.9 lb) with battery
Weight — Vial Sampling Kit 0.6 kg (1.3 lb)
Industrial Ratings and Safety Certifications CE, ETL listed. Conforms to UL Std. 61010-1. Certified to CSA C22.2 No. 61010-1. see Declaration of Conformity

1 Stated analytical performance is achievable under controlled laboratory conditions that minimize operator and standards errors.
2 Total measurement accuracy includes separate contributions from both the standards accuracy and the Instrument Accurac
3 Conductivity and accuracy specifications are met as shown above for ambient temperatures from 10–40 °C (50–104 °F). When calibrated at 40 °C, the following specifications are met at 40–55 °C (104–131 °F): conductivity accuracy is } 2.4%, and TOC accuracy is } 6.7% on 500 ppb C of sucrose.
4 Sample water quality with a conductivity >1.4 μS/cm may result in reduced TOC accuracy.