Cart  |  Contact  |  Help  |  seainfo@dwyeromega.com  | 
Toll-Free in Thailand: 001 800 441 0237
International+65 6415 5353

Multi-Parameter Input Transmitter For pH/ORP

DPU91_pH

Multi-Parameter Input Transmitter For pH/ORP | DPU91_pH

Multi-Parameter Input Transmitter For pH/ORP

See All Models Below

CE
  • 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
Industrial pH Instrumentation and Electrodes - 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) DPU91-pH/ORP Series
Display Ranges
For flow version visit omega.com/dpu91_flow For conductivity/resistivity version visit omega.com/dpu91_conductivity
pH: 0.00 to 15.00
pH Temperature: -99 to 350°C (-146 to 662°F)
ORP: -1999 to 1999.9 mV
Temperature: -99 to 350°C (-146 to 662°F)
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% noncondensing 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)
DPU91 without Relay Module: 200 mA @ 10.8 to 35.2 Vdc
DPU91 with Relay Module: 300 mA @ 10.8 to 35.2 Vdc
Open Collector: 1
Overvoltage Protection: 48 V transient protection device current limiting for circuit protection and reverse-voltage protection
Relay Specifications (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 (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 flow models visit omega.com/ dpu91_flow
Raw Conductivity/Resistivity: Input directly from compatible conductivity/ resistivity electrodes via direct conductivity/resistivity module or via CDTX-2850 For conductivity/resistivity models visit omega.com/dpu91_conductivity
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 (°77F)
Resolution: 1 µS
Repeatability: ±0.2% of reading
(Specify Model Number)

What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/Desc.
Qty
Description
Multi-Parameter Display and Transmitter
DPU91
DPU91
THB24,587.46
Availability: 1 week
 
DC powered field mount multi-parameter display and transmitter (Requires FP90UM mounting kit)
DPU91P
DPU91P
THB24,331.74
Availability: 1 week
 
DC powered panel mount multi-parameter display and transmitter
pH and ORP Electrodes
  
ORE-2725
THB14,910.00
Availability: 9 weeks
 
Flat surface ORP electrode, 10KΩ ID. 3⁄4 NPT
  
ORE-2725-ISO
THB14,914.80
Availability: 9 weeks
 
Flat surface ORP electrode, 10KΩ ID, ISO 7/1 R3⁄4
  
PHE-2724
THB14,890.00
Availability: 1 week
 
Flat surface pH electrode, 3K Balco, 3⁄4 NPT thread
  
PHE-2724-ISO
Consult Sales  
Availability: 
 
 
Flat surface pH electrode, ISO 7/1 R3⁄4 NPT
  
PHE-2726
THB12,140.86
Availability: 9 weeks
 
Bulb style pH electrode, 3K Balco, 3⁄4 NPT thread
  
PHE-2726-ISO
Consult Sales  
Availability: 
 
 
Bulb style pH electrode, 3K Balco, ISO 7/1 R3⁄4
  
PHE-2726-HF
Consult Sales  
Availability: 
 
 
Bulb style, HF resistant pH electrode, 3K Balco, 3⁄4 NPT
  
PHE-2726-HF-ISO
Consult Sales  
Availability: 
 
 
Bulb style, HF resistant pH electrode, 3K Balco, ISO 7/1 R3⁄4
  
PHE-2726-LC
Consult Sales  
Availability: 
 
 
Bulb style, low conductivity pH electrode, 3K Balco, 3⁄4 NPT
  
PHE-2726-LC-ISO
Consult Sales  
Availability: 
 
 
Bulb style, low conductivity pH electrode, 3K Balco, ISO 7/1 R3⁄4
Accessories
PHA-10
PHA-10
THB758.25
Availability: 1 week
 
pH 10 buffer solutions 500 ml (1 pt)
PHA-10-GAL
PHA-10-GAL
THB1,895.62
Availability: 1 week
 
pH 10 buffer solutions 4L (1 gal)
PHA-4
PHA-4
THB717.73
Availability: 1 week
 
pH 4 buffer solutions 500 ml (1 pt)
PHA-4-GAL
PHA-4-GAL
THB1,794.32
Availability: 1 week
 
pH 4 buffer solutions 4L (1 gal)
PHA-7
PHA-7
THB717.73
Availability: 1 week
 
pH 7 buffer solutions 500 ml (1 pt)
PHA-7-GAL
PHA-7-GAL
THB1,794.32
Availability: 2 weeks
 
pH 7 buffer solutions 4L (1 gal)
PHA-DI
PHA-DI
THB849.97
Availability: 1 week
 
De-ionized water 500 ml (1 pt)
PHA-DI-GAL
PHA-DI-GAL
THB2,121.87
Availability: 1 week
 
De-ionized water 4L (1 gal)
  
PHAB-DI
THB1,925.00
Availability: 3 weeks
 
20 single use foil packets of de-ionized water
PHAB-PH
PHAB-PH
THB1,926.19
Availability: 1 week
 
5 each single use foil packets of pH-4, pH-7, pH-10 and de-ionized water
  
PHEH-275G
THB20,407.09
Availability: 1 week
 
Submersible sensor electronics, 3⁄4 NPT
  
PHEH-275Y
THB20,410.00
Availability: 9 weeks
 
In-line sensor electronics, 15 ft cable, 3⁄4 NPT
  
PHEH-275Y-ISO
THB20,410.00
Availability: 7 weeks
 
In-line sensor electronics, 15 ft cable, ISO 7/1 R3⁄4
  
PHEH-276G
Consult Sales  
Availability: 
 
 
In-line pre-amplifier, 3⁄4 NPT
  
PHEH-276G-ISO
Consult Sales  
Availability: 
 
 
In-line pre-amplifier, ISO 7/1 R3⁄4
  
PHEH-276Y
THB11,860.00
Availability: 1 week
 
Submersible pre-amplifier, 3⁄4 NPT
  
PHEH-276Y-ISO
Consult Sales  
Availability: 
 
 
Submersible pre-amplifier, ISO 7/1 R3⁄4
  
PHE-2700-DLA
THB20,685.04
Availability: 1 week
 
pH/ORP simulator and system tester
Mounting and Electrical Options
FP90UM
FP90UM
THB3,357.08
Availability: 1 week
 
Universal mounting bracket for remote mounted display
  
DPU90-R
THB5,225.46
Availability: 7 weeks
 
Field mount relay module (Panel mount only!)
  
DPU90-COMM
THB13,830.00
Availability: 7 weeks
 
Field mount communications module (Panel mount only!)
Mounting options for use with EasyCal
  
PHTX-275Y
Consult Sales  
Availability: 
 
 
Universal mount junction box with EasyCal
All prices on this site are shown in Thai Baht.
Note: Comes complete with operator’s manual.

Electrodes and mounting kits sold separately.


Product Manuals:

Download pH/ORP Electrodes
Download pH/ORP Preamplifier
Download Installation Kits and Hardware Accessories
Download pH/ORP Sensor Electronics
Download Transmitter
Download Optional Modules for Batch Controller
We noticed you are from the US. Visit your local site for regional offers and live support.