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Multi-Parameter Input Transmitter For Conductivity- Resistivity and Salinity
DPU91_Conductivity
PLACE ORDER - Large Auto-Sensing Backlit Display
- “Dial-Style” Digital Bar Graph
- Intuitive and “User-Friendly” Interface
- Optional Field Upgradable Relays
- Warning LED Indicator
- Custom 13-Character Label Capabilities
- Factory Reset Capability
Description
Description
The DPU91 transmitter provides asingle channel interface for manydifferent parameters including flow,pH/ORP, conductivity/resistivity,salinity and temperature. TheDPU91-BC transmitter has theadded capability of supporting thebatch module for batching control.The extra-large (3.90 x 3.90")autosensing backlit display canbe viewed at 4 to 5 times thedistance over traditional transmitters.The highly illuminated display andlarge characters reduce the risk ofmisreading or misinterpreting thedisplayed values. The display showsseparate lines for units, main andsecondary measurements as wellas a “dial-style” digital bar graph.The DPU91 is offered in both panelor field-mount versions. Bothconfigurations can run on 12 to32 Vdc power (24 Vdc nominal)and have 4 to 20 mA outputs.Designed for complete flexibility,plug-in modules allow the unit toeasily adapt to meet changingcustomer needs. Optional modulesinclude relay, direct conductivity/resistivity, batch and a PCcommunications configuration tool.The unit can be used with defaultvalues for quick and easyprogramming or can be customizedwith labeling, adjustable minimumand maximum dial settings, and unitand decimal measurement choices.
Specifications
General
Input Channels: 1
Input Types: Digital serial ASCII, TTL level, 9600 bps
Frequency Range: 0.5 to 1500 Hz
Accuracy: 0.5% of reading (display)
Measurement Types: Flow, pH/ORP, conductivity/resistivity, salinity, pressure, temperature or batch
Enclosure and Display
Case Material: PBT
Window: Shatter-resistant glass
Keypad: 4 buttons, injection-molded silicone rubber seal
Display: Backlit, 7 and 14-segment
Update Rate: 1 second
LCD Contrast: 5 settings
Indicators: “Dial-style” digital bar graph, LEDs for open collector, relays and warning indicator
Enclosure: ¼ DIN, NEMA 4X/IP65
Mounting Panel: ¼ DIN, ribbed on four sides for panel mounting clip inside panel, silicon gasket (included)
Field Mounts: Specified to trodeks® field mount junction boxes
Weight: 0.63 kg (1.38 lb)
Display Ranges
For PH/ORP version visit trodeks.com/dpu91_ph For flow version visit trodeks.com/ dpu91_flow
Conductivity: 0.0000 to 99999 µS, mS, PPM and PPB (TDS), kΩ, MΩ
Conductivity Temperature: -99 to 350°C (-146 to 662°F)
Temperature: -99 to 350°C (-146 to 662°F)
Salinity: 0 to 100 PPT
Environmental
Ambient Operating Temperature:
Backlit LCD: -10 to 70°C (14 to 158°F)
Storage Temperature: -15 to 70°C (5 to 158°F)
Relative Humidity: 0 to 100% condensing for field mount; 0 to 95% non-condensing for panel mount
Maximum Altitude: 4000 m (13,123')
Electrical Requirements
Power to Sensors:
Voltage: 4.9 to 5.5 Vdc @ 25°C, regulated short circuit protected
Terminal Blocks: Pluggable screw type 14 AWG maximum wire gauge
Input Power
DC: 10.8 to 35.2 Vdc, regulated
Current Output:
4 to 20 mA (10.8 to 35.2 VDC, 30 mA max)
Open Collector:1
Overvoltage Protection: 48 V transient protection device current limiting for circuit protection and reverse-voltage protection
Relay Specifications (DPU91-R)
Dry-Contact Relay:
Type: SPDT, Form C
Maximum Current Rating: 5 A resistive 50 mA DC
Maximum Voltage Rating: 30 Vdc or 250 Vac
Hysteresis Adjustable: Absolute in engineering units (EUs)
Latch Reset: In test screen only
Delay: 9999.9 seconds (maximum)
Test Mode: Set on/off
Cycle Time: 99999 seconds (maximum)
Maximum Pulse Rate: 400 pulses/minute
Proportional Pulse: 400 pulses/minute
Volumetric Pulse Width: 0.1 to 3200 s
Pulse Width Modulation: 0.1 to 320 s
Input Types
Digital or AC Frequency: pH/ORP input via the digital output from the PHTX-2750 pH/ORP sensor electronics for pH/ORP models visit trodeks.com/ dpu91_ph. For flow models visit trodeks.com/dpu91_flow
Raw Conductivity/Resistivity: Input directly from signet conductivity/ resistivity electrodes via direct conductivity/resistivity module or via CDTX-2850
Input Specifications
Digital Serial: ACSII, TTL level, 9600 bps
Frequency Input:
Sensitivity: 80 mV @ 5 Hz, gradually increasing with frequency
Span: 0.5 Hz to 1500 Hz @ TTL level input
Accuracy: ± 0.5% or reading maximum error @ 25°C (77°F)
Resolution: 1 µS
Repeatability: ±0.2% of reading Anemometer | Automation | Accelerometers | Calibrator | Cartridge Heaters | Chart Recorders | Cryogenics | Custom Pressure Transducers | Data Loggers | Data Acquisition | Dial Thermometers | Fiber Optics | Fiber Optic Temperature Measurement | Flexible Heaters | Flow Meters | Glass Bulb Thermometers | Grippers | Heaters | Humidity Measurement | Integrated Circuit Sensors | Immersion Heaters | Infrared Thermometers | Level Measurement | Load Cells | M12 Temperature Connectors | Magnetic Flow Meter | Panel Meter | PID Controllers | pH meter | Pressure Gauges | Pressure Transducers | Pressure Transmitters | Rotameters | RTD | Remote Process Monitoring | Sanitary Sensors | Signal Conditioners | Stepper Motors | Strain Gages | Strip Heaters | Temperature Controllers | Temperature Labels | Temperature Measurement | Temperature Sensor Manufacturing | Temperature Sensors | Temperature Transmitters | Thermal Imagers | Thermistors | Thermocouple | Thermocouple Wire | Thermowell | Ultrasonic Flow Meters | Vortex Flow Meter | Wireless Sensors
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