Large Auto-Sensing Backlit Display

“Dial-Style” Digital Bar Graph

Intuitive and “User-Friendly” Interface

Optional Field Upgradable Relays

Accuracy± 0.5 %

Accuracy Detail± 0.5% or reading maximum error @ 25°C (77ºF)

Additional Features 1Field Mount, Sensors

Altitude,Max4000 m

Conductivity Measurement0.0000 to 99999 μS

Control CharacteristicsDry-Contact Relays: 2 Open Collector: 1 Type: SPDT N/A Form C: N/A 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

Display Measuring UnitskΩ, MΩ, ms, ppb, ppm, μS

Display NoteLCD Contrast: 5 settings

Display TypeBacklit LCD

Display Type NoteBacklit, 7 and 14-segment LCD

Electrical ConnectionScrew Terminal

Electrical Output4 to 20 mA

Enclosure MaterialPBT

Enclosure RatingsIP65, NEMA Type 4X

Form factor1/4 DIN

Frequency0.5 to 1500 Hz

Input NoteDigital 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

Input TypePulse, S3L

Input Type NoteDigital or AC Frequency: pH/ORP input via the digital output from the PHTX-2750 pH/ORP sensor electronics Conductivity/Resistivity: Input directly from OMEGA conductivity/ resistivity electrodes via direct conductivity/resistivity module or via CDTX-2850

Keypad4 buttons, injection-molded silicone rubber seal

LED Indicators“Dial-style” digital bar graph, LEDs for open collector, relays and warning indicator

Measurement TypeFlow, pH, ORP, conductivity, salinity, pressure, temperature, batch

MountingSpecified to Omega field mount junction boxes

Number of Channels1

ORP Measurement Range-1999 to 1999.9 mV

Output Detail4 to 20 mA (10.8 to 35.2 Vdc, 30 mA maximum)

Over-Voltage Protection48 V transient protection device current limiting for circuit protection and reverse-voltage protection

PH Measurement Range0 to 15 pH

Relative Humidity0 to 100% condensing for field mount

0 to 95% non-condensing for panel mount

Repeatability±0.2% of reading

Resolution1 μS

Sensor Voltage4.9 to 5.5 Vdc @ 25°C, regulated short circuit protected

Storage Temperature, Max70 °C

Storage Temperature, Min-15 °C

Supply Power NoteDPU91 without Relay Module: 200 mA @ 10.8 to 35.2 Vdc DPU91 with Relay Module: 300 mA @ 10.8 to 35.2 Vdc

Supply Voltage10.8 to 35.2 Vdc

Update Rate1 sec

Weight0.63 kg

Wire Gauge14 AWG