The DPU91 transmitter provides a
single channel interface for many
different parameters including flow,
salinity and temperature. The
DPU91-BC transmitter has the
added capability of supporting the
batch module for batching control.
The extra-large (100 mm²) backlit display can
be viewed at 4 to 5 times the
distance of traditional transmitters.
The display shows separate lines for units of measure, main and
secondary measurements as well an analogue bar graph.
The DPU91 is offered in both panel
or process-mount versions. Both
models can run on 12 to
32 Vdc power (24 Vdc nominal) and have 4 to 20 mA outputs.
Designed for complete flexibility,
plug-in modules allow the unit to
easily adapt to meet changing application needs. Optional modules
include relay, direct conductivity/
resistivity, batch and a PC
communications configuration tool.
The unit can be used with default
values for quick and easy installation or can be customised with labels, adjustable minimum
and maximum dial settings, units of measure and resolution.
Specifications Input Channels: 1 Input Types & Specifications Digital Serial: ACSII, TTL level, 9600 bps pH/ORP input: via the digital output from the PHTX-2750 pH/ORP sensor electronics Raw Conductivity/Resistivity: Input directly from compatible conductivity/ resistivity electrodes via direct conductivity/resistivity module or via CDTX-2850 Frequency Input: Sensitivity (for pick-up type sensors): 80 mV @ 5 Hz, gradually increasing with frequency to 2.5 V Frequency Range (for pulse type sensors): 0.5 Hz to 1500 Hz @ TTL level input Accuracy: ± 0.5% of reading maximum error @ 25°C Resolution: 1 µS Repeatability: ±0.2% of reading
Display Ranges pH: 0.00 to 15.00 pH Temperature: -99 to 350°C (-146 to 662°F) ORP: -1999 to 1999.9 mV Conductivity: 0.0000 to 99999 µS, mS, PPM and PPB (TDS), kΩ, MΩ Conductivity Temp.: -99 to 350°C (-146 to 662°F) Salinity: 0 to 100 PPT Temperature: -99 to 350°C (-146 to 662°F) Flow Rate: -9999 to 99999 units per second, minute, hour or day Totalizer: 0.00 to 99999999 units (program lockout or resettable) Level: -9999 to 99999 m, cm, ft, in, % Volume: 0 to 99999 cm³, m³, in³, ft³, gal, L, lb, kg, % Pressure: -40 to 1000 psi Dissolved Oxygen 0 to 20 mg/L, 0 to 200%
Outputs Current (4 to 20 mA ): Span: 3.8 to 21 mA Zero: 4.0 mA factory set; user programmable from 3.8 to 4.2 mA Full Scale: 20.00 mA factory set; user programmable from 19.0 to 21.0 mA Accuracy: ± 32 µA max. error @ 25 °C @ 24 VDC Resolution: 6 µA or better Temp. Drift: ±1 µA per °C Power Supply Rejection: ±1 µA per V Isolation: Low voltage (< 48 VAC/DC) Voltage: 10.8 to 35.2 VDC Max. Impedance: 250 Ω @ 12 VDC; 500 Ω @ 18 VDC; 750 Ω @ 24 VDC Update Rate: 100 mS nominal Open Collector: 1 Over-voltage Protection: 48 V transient protection device current limiting for circuit protection and reverse-voltage protection Relay (DPU91-R optional relay module) Dry-Contact Relays: 2 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 Latch Reset: In test screen only Delay: 9999.9 seconds (maximum)
Electrical Power to Sensors: Voltage: 4.9 to 5.5 Vdc @ 25°C, regulated short circuit protected Input Power: 10.8 to 35.2 Vdc regulated; 300 mA with relay module, 200 mA without Terminal Blocks: Pluggable screw type Connector wire gauge Power, Loop, Open Collector: Ø 0.33 - 2 mm (12 - 28 AWG) Freq/Serial: Ø 0.33 - 1.3 mm (16 - 28 AWG) Relay module: Ø 0.33 - 2 mm (12 - 28 AWG) Cond/Res module: Ø 0.33 - 1.3 mm (16 - 28 AWG) Batch module: Ø <= 1.6 mm (<= 14 AWG)
General Enclosure and Display Case Material: PBT Window: Shatter-resistant glass Keypad: 4 buttons, injection-moulded silicone rubber seal Display: Backlit, 7 and 14-segment Update Rate: 1 second LCD Contrast: 5 settings Indicators: Analogue bar graph, LEDs for open collector, relays and warning indicator Enclosure: ¼ DIN, IP65 (NEMA 4X) Mounting Panel: ¼ DIN, ribbed on four sides for panel mounting clip inside panel, silicon gasket (included) Field Mounts: Specified to Omega® field mount junction boxes Weight: 0.63 kg DPU91-pH/ORP
Environmental Ambient Operating Temperature: Backlit LCD: -10 to 70°C Storage Temperature: -15 to 70°C Relative Humidity: 0 to 100% condensing for field mount; 0 to 95% non-condensing for panel mount Maximum Altitude: 4000 m
*Alle Preisangaben in Euro. Anmerkung: Comes complete with operator’s manual.