Multi-Parameter Input Transmitter For Conductivity, Resistivity and Salinity

DPU91_Conductivity

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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

Conductivity Instrumentation - View related products

Description

The DPU91 transmitter provides a single channel interface for many different parameters including flow, pH/ORP, conductivity/resistivity, salinity and temperature. The DPU91-BC transmitter has the added capability of supporting the batch module for batching control. The extra-large (3.90 x 3.90") autosensing backlit display can be viewed at 4 to 5 times the distance over traditional transmitters. The highly illuminated display and large characters reduce the risk of misreading or misinterpreting the displayed values. The display shows separate lines for units, main and secondary measurements as well as a “dial-style” digital bar graph. The DPU91 is offered in both panel or field-mount versions. Both configurations 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 customer 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 programming or can be customized with labeling, adjustable minimum and maximum dial settings, and unit and 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 OMEGA™ field mount junction boxes
Weight: 0.63 kg (1.38 lb)
Display Ranges
For PH/ORP version visit omega.com/dpu91_ph For flow version visit omega.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 omega.com/ dpu91_ph. For flow models visit omega.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

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Part Number/ Desc.

Qty

Description

DPU91

AUD995.06

Availability: 1 week

DC powered field mount multi-parameter display and transmitter (Requires FP90UM universal mounting kit)

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AUD983.94

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Required Module for Conductivity

DPU90-C

AUD450.28

Availability: 1 week

Conductivity/Resistivity/Salinity direct input module (required for Conducitivty measurement)

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Conductivity sensor, 1⁄2" sanitary, cell constant 0.01, 316 SS

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Conductivity sensor, 1" sanitary, cell constant 0.01, Titanium

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Conductivity sensor, 2" sanitary, cell constant 0.1, 316 SS

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Conductivity sensor, 11⁄2" sanitary, cell constant 1, 316 SS

CDCE-90S-1-S20

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Accessories

DPU90-AK

AUD54.00

Availability: 7 weeks

Angle adjustment kit for field mount

DPU90-COMM

AUD560.00

Availability: 7 weeks

Communications module, HART® (Panel mount only!)

DPU90-CT

AUD494.75

Availability: 13 weeks

PC configuration tool, includes software

DPU90-R

AUD211.24

Availability: 1 week

Programmable dual relay output module (Panel mount only!)

Mounting Options

FP90UM

AUD135.75

Availability: 1 week

Universal mounting bracket for field mounted units

Conductivity Solutions

CDSA-10

AUD128.41

Availability: 1 week

*10 µ/cm conductivity solution

CDSA-15

Consult Sales

Availability:

*15 µ/cm conductivity solution

CDSA-45

AUD31.25

Availability: 1 week

45 µ/cm conductivity solution

CDSA-450

AUD31.25

Availability: 1 week

450 µ/cm conductivity solution

CDSA-1413

AUD73.38

Availability: 1 week

1413 µ/cm conducitivity solution

CDSA-1500

AUD31.25

Availability: 1 week

1500 µ/cm conducitivity solution

CDSA-4500

AUD33.02

Availability: 1 week

4500 µ/cm conductivity solution

CDSA-45000

AUD33.02

Availability: 1 week

4500 µ/cm conductivity solution

† All amounts shown in AUD
Note: Comes complete with operator’s manual.

Sensors and mounting kits sold separately.

The DPU90-C is required for use with conductivity measurement. The DPU90-C is sold separately.

* 6-month shelf life

Product Manuals:

Download Transmitter

Download PC COMM Sensor Configuration Tool