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DC402G Dual Cell Conductivity/Resistivity Converter
Brand: Yokogawa Electric Corporation
Flexibility, reliability and low maintenance are among the benefits provided by the DC402G conductivity analyzer.
Designed to meet the exacting requirements of measuring dual cell conductivity and resistivity in the modern industrial environment, it contains many features to ensure the best precision whatever the application.
Differential, ratio, deviation. % passage or % rejection can be indicated and/or transmitted.
This 4-wire converter is housed in a robust IP 65, NEMA 4X, CSA Type 3S field mountable case. Two mA outputs, four relays and a clear LCD make the DC402G a truly comprehensive package.
The DC402G features PI control on the auxiliary mA output and the pulse proportional relay outputs, thus avoiding the need for a separate controller.
The famous EXA sensor diagnostics are also present in the DC402G. Self-tuning of the excitation frequency and measuring pulses ensure optimum accuracy.
The polarization check gives on line indication of sensor fouling and early warning that maintenance is needed.
A wide variety of temperature compensation possibilities (NaCl according to IEC 60746-3, manual TC, preprogrammed matrices and a freely programmable 5 x 5 matrix), provides a high-accuracy measurement with minimum effort.
Features- Differential, ratio or calculated outputs
- Universal conductivity/resistivity, software switchable
- On-line sensor checking
- Self-tuning measuring signal
- Matrix temperature compensation for pure water applications
- Four fully configurable SPDT contact outputs
- Two fully configurable mA outputs
- Built-in PI controller
- Easy to use EXA control panel
- USP monitoring
Specifications
Accuracy
- ± 0.3° C (± 0.54° F) - Pt1000 Ω, Ni100 Ω & PB36 NTC
- ± 0.4° C (± 0.72° F) - Pt100 Ω & 8k55 Ω
- ± 0.5 % of Full Scale - Conductivity & Resistivity
Alarm
- High/Low
Ambient Temperature Range
- -10° to 55° C (14° to 131° F) - Ambient Operating Temperature
Applications
- Controlling Blow-Down of Cooling Towers (Ratio Output)
- Controlling Flowrate of Wash Water (Differential Output)
- Leak Detection of Heat Exchanges (Deviation Output)
- Monitoring Performance of Reverse Osmosis Columns (Percent Rejection Output), Monitoring Performances of Cation Exchange Columns (Ratio Output)
- Monitoring Very High Purity Systems (Differential Resistivity)
- Pharmaceutical Water Monitoring (USP)
- Redundancy for Accurate Analysis (Deviation Output)
Approvals & Certifications
- CSA C22.2 No. 94.2
- EMC: EN 61326-1 Class A, Table 2 & EN 61326-2-3 & EN 61000-3-2 Class A & EN 61000-3-3
- KC
- RCM: EN 61326-1 Class A
- UL Standard No. 61010-1 & 50E
Burn-Out
- Burn Down 0/3.5 mA to Signal Failure
- Burn Up 22 mA
Cable Entry
- Six PG 13.5 Nylon Glands
Cable Length
- 200 feet (60 metres)
Compensated Temperature
- 0° to 80° C (32° to 175° F)
Conduit Connection
- 1/2” NPT Female - Adapter
- G 1/2” Female - Adapter
Consumption
- Maximum
Control Functions Characteristics
- ON/OFF
Display
- 6 Alphanumeric Characters, 0.27” (7 mm) High - Message Display
- LCD Display
- Main Display: 3-1/2-Digits, 0.49” (12.5 mm) High
Electrical Connectors
- 26 to 14 AWG (0.13 to 2.08 mm²)
- Cable Terminals up to 14 AWG (2.5 mm²) Finished Wires
Electrical Rating
- Maximum
Enclosure Finish
- Chemically Resistant Coating
- Moss Green - Cover Color
- Off-White - Case Color
Environmental Protection
- IP65
- NEMA 3S
- NEMA 4X
Frequency
- 50/60 Hz - Supply Frequency Rating
Function
- 3-Digit Programmable Password
Humidity
- 10 to 90 % Relative Humidity, Non-Condensing
Indication
- LED
Linearity
- ± 0.3° C (± 0.54° F) - Pt1000 Ω, Ni100 Ω & PB36 NTC
- ± 0.4° C (± 0.72° F) - Pt100 Ω & 8k55 Ω
- ± 0.5 % of Full Scale - Conductivity & Resistivity
Load
- Maximum
Mounting
- Panel
- Pipe
- Wall Mounted
Output
- 0-20 mA DC - Isolated Transmission Signals with Common Negative
- 4-20 mA DC - Isolated Transmission Signals with Common Negative
Repeatability
- ± 0.3° C (± 0.54° F) - Pt1000 Ω, Ni100 Ω & PB36 NTC
- ± 0.4° C (± 0.72° F) - Pt100 Ω & 8k55 Ω
- ± 0.5 % of Full Scale - Conductivity & Resistivity
Resistance
- 0.00 Kiloohm/C to 999 megaohms/C at 25° C (77° F) Reference Temperature
- Maximum
- Minimum 40 ohms/C at Process Temperature
Sensor, Probe Type
- Ni100
- Pt100
- Pt1000
Span - Maximum
- 1,500 ms/cm, 999 megaohms x cm - Conductivity/Resistivity
- 250° C (500° F)
Span - Minimum
- 0.010 μS/cm, 0.001 kiloohms x cm - Conductivity/Resistivity
- 25° C (50° F)
Storage Temperature
- -30° to 70° C (-20° to 160° F)
Supply Voltage
- 115 Vac - Rating
- 230 Vac - Rating
- 97.8-264.5 Vac - Applicable Range
Switch Type
- 4 SPDT Relay Contacts
Temperature Range
- 0° to 100° C (32° to 212° F) - Programmable Reference Temperature
- -10° to 120° C (14° to 248° F) - 8K55 NTC
- -20° to 120° C (-4° to 248° F) - PB36 NTC
- -20° to 200° C (-4° to 392° F) - Pt100 & Ni100
- -20° to 250° C (-4° to 482° F) - Pt1000
Window Material
- Polycarbonate
- Monitoring performances of cation exchange columns (Ratio output)
- Leak detection of heat exchanges (Deviation output)
- Monitoring performance of reverse osmosis columns (Percent rejection output)
- Controlling flowrate of wash water (Differential output)
- Controlling blow-down of cooling towers (Ratio output)
- Redundancy for accurate analysis (Deviation output)
- Monitoring very high purity systems (Differential Resistivity)
- Pharmaceutical water monitoring (USP)