מכשירי בקרה

alpha DO 1002 בקר חמצן מומס דגם DO-1000 פרופרציונלי לפנל 4-20ma+ממסרים

Product Features

v	Built-In Programmable Limit, Proportional (Pulse Length or Pulse Frequency) - ideal for precision process control applications

v	User-Customization through Advanced Setup Menu offers flexibility in matching the controller's functions to suit individual's specific requirement

v	Readout in mg/L, pm or % saturation

v	Barometric and Salinity Automatic Compensation after manual input

v	Hold Relay for use with float switches/flow switches and other controllers as a failsafe function

v	Two Level Password Protection prevents un authorized tampering with settings

v	0 to 2000 Second Time Delay Adjustment on control and alarm delays

v	Galvanically Isolated Scalebale 0-20/4-20 mA Outputs

v	Wash Contact Relay controls electrodes cleaning systems at desired duration and frequency

v	Choice of General Purpose or Low DO measurement for wider applications

v	Adjustable Hysteresis (Dead Band) prevents rapid contact switching near set point

v	Non-Volatile Memory retains all stored parameters and calibration data even if power fails

v	Large Dual Display shows DO with temperature simultaneously - features clear multiple icons, set points, and status messages

v	Choice of Temperature Sensor Pt100/Pt1000 with 2-wire or 3-wire temperature input selection

v	Easy Installation and Wiring with detachable plug-in connectors

Applications

General: Useful for monitoring temperature and control of DO in wastewater treatment and aquaculture applications. Use with valves, blowers or aerators to ensure proper system operation.

Specifications

Product Specification	Description
DO Range	mg/l of oxygen: 0.00 – 20.00 mg/l % saturation of oxygen: 0.0 to 200.0% saturation
Resolution & Accuracy	0.01 mg/l or 0.1% ± 1.5% of full scale reading
No. of calibration Points	1 (100% saturation) or 2 (100% and 0% saturation) points
Flow rate	±1 – 2 cm/sec (dependent on both Temperature & Oxygen level)
Response Time	40 – 50 secs to attain 95%
Temperature Range	-9.9 to 125 °C
Resolution & Relative Accuracy	0.1 °C & ±0.5 °C
Temperature Sensor	Pt 100
Temperature Response	Approx. 1 min/ °C
Temperature Compensation	Auto / Manual (reference at 25 °C)
Pressure Input	K. Pas/mm Hg (Manual input and Automatic correction)
Salinity Input	0.0 to 50.0 ppt (Manual inout and Automatic correction)
Set Point and Controller Functions
Function	Limit / Proportional (pulse or frequency) controller
Adjustable Period with Pulse Length Controller	0.5 to 20 secs
Adjustable Period with Pulse Frequency Controller	60 to 120 pulses/min
Switching Hysteresis	0.1 to 1.0 mg/l or 0 to 10.0%
Pickup / Dropout Delay	0 to 2000 seconds
Contact Outputs, Controller	2 potential free change-over contacts
Switching Voltage / Current / Power	Max 250 VAC / Max 3A / Max 600VA
Alarm Functions
Function (Switchable)	Launching or Pulse
Pickup Delay	0 to 2000 seconds
Switching Voltage / Current / Power	Max 250 VAC / Max 3A / Max 600VA
Electrical Data and Connections
Power requirement	110/ 220 VAC (jumper selection)
Frequency	48 to 62Hz
Signal Output	0/4 to 20mA, galvanically isolated
Load	Max. 600 Ω
Connection Terminal	Terminal blocks 5-pole/ 17-pole, removable
Main Fuse/ Fine Wire Fuse	Slow-blow 250 V/ 100 mA
EMC Specifications
Emitted Interference	According to EN 50081-1
Immunity to Interference	According to EN EN 50082-1
Environmental Conditions
Maximum Relative Humidity	10 to 95%, non-condensing
Ambient Temp. Operating Range	0 to 50 °C
Mechanical Specifications
Dimensions	175 x 96 x 96 mm
Weights	Max. 0.7kg
Material	ABS with polycarbonate
Insulation	IP 54/ IP 40