Operating manual EN DO-400 Oxygen measuring device Permanently connected oxygen sensor Waterproof
Table of contents Table of contents 1 Legal address of the manufacturer................................................................................................... 4 2 2.1 2.2 2.3 2.4 2.5 About this documentation ................................................................................................................. 5 Foreword...............................................................................................................................................
Table of contents 8.2.2 8.2.3 8.2.4 8.2.5 Opening the configuration menu......................................................................................................... 21 Configuring parameters of the configuration menu............................................................................. 22 Adjustment of the measuring input ..................................................................................................... 23 Configuring parameters of the adjustment menu.............
1 | Legal address of the manufacturer DO-400 1 Legal address of the manufacturer Conrad Electronic SE Klaus-Conrad-Str. 1 D-92240 Hirschau http://www.conrad.com WEEE reg. no. DE 28001718 4 / 29 B-H86.0.21.DB214-1.
DO-400 About this documentation | 2 2 About this documentation 2.1 Foreword Read this document carefully and familiarise yourself with the operation of the product before you use it. Keep this document ready to hand and in the immediate vicinity of the product so that it is available to the personnel/user for reference at all times in case of doubt. The product was developed according to the state of the art and fulfils the requirements of the applicable European and national Directives.
2 | About this documentation DO-400 Outcome of an action Result, consequence or effect of an instruction. Emphases In order to simplify legibility and provide a clearer overview, various sections / information are emphasised. – 1234 Display elements – Mechanical controls – Product functions – Product labels – Cross-reference [} p. 5] – Foot notes 2.5 Further information Software version of the product: – V1.
DO-400 Safety | 3 3 Safety 3.1 Explanation of safety symbols DANGER This symbol warns of imminent danger which can result in death, severe bodily injury, or severe property damage in case of non-observance. DANGER This symbol indicates danger for living tissue as well as a variety of materials, which can be damaged or destroyed when coming into contact with this chemical.
3 | Safety DO-400 DANGER Incorrect area of application! In order to prevent erratic behaviour of the product, personal injury or property damage, the product must be used exclusively as described in the chapter Description [} p. 10] in the operating manual.
DO-400 Safety | 3 For this purpose, also refer to 2 Technical data [} 28] 3.4 Intended use The product is designed for analysis of the oxygen concentration and/or oxygen saturation in freshwater and salt water. It is used, for example, for the monitoring of wells, sewer lines and aquaria. A minimum flow to the sensor of approx. 30 cm/sec is necessary for a correct measurement. See Technical data [} p. 28]. 3.
4 | Description DO-400 4 Description 4.1 Scope of delivery Please check to ensure the completeness of the product after opening the package. You should find the following components: – Quick reference guide – Handheld measuring device, ready for operation, including batteries – Permanently connected oxygen sensor 4.2 Job description The product offers precision, speed and reliability in a compact, ergonomic housing.
DO-400 The product at a glance | 5 5 The product at a glance 5.1 The DO-400 / -410 LCD Display DO-400 / -410 DO-400 / -410 5.2 Display elements Display Battery indicator Evaluation of the battery status Unit display Display of units, if applicable, with unstable symbol or type of mode, min/max/hold Main display Measurement of the current O2 value or value for min/max/hold Auxiliary display Corresponding temperature for the displayed O2 value with unit.
5 | The product at a glance DO-400 Up / Down button Press briefly Long press Both simultaneously Display of the min/max value Change value of the selected parameter Reset the min/max value of the current measurement Rotate display, overhead display Function key 12 / 29 Press briefly Freeze measurement Return to measurement display Call up next parameter Long press, 2s Start menu configuration, (ONF appears in the display Long press, 4s Start automatic calibration, (AL appears in the display B-H
DO-400 Bases for measurement | 6 6 Bases for measurement 6.1 Oxygen sensor 6.1.1 Explanation The oxygen sensor is an active sensor. It consists of a platinum cathode, a lead anode and potassium hydroxide (KOH) as an electrolyte. If oxygen is present, it is reduced on the platinum cathode and the sensor delivers a signal. If no oxygen is present, no signal is delivered. The anode is consumed by the oxygen measurement. The sensor ages.
6 | Bases for measurement DO-400 6.1.2 Design Refill opening Shaft Membrane head Platinum electrode Storage bottle Platinum electrode If oxygen is present, it is reduced on the platinum electrode and the sensor delivers a signal. Soiling on the platinum electrode or between the membrane and electrode can influence the measurement. Storage bottle The storage bottle is provided to keep the membrane moist. The service life of the sensor is extended as a result.
DO-400 Bases for measurement | 6 – Mechanical stress of the sensor membrane – Storage in dry air – Continuous use in elevated carbon dioxide concentrations 6.1.4 Operating position The oxygen sensor should be arranged vertically upwards with the connecting cable. A slight angle of inclination does not impair the measurement. 6.1.5 Measurement accuracy The measurement accuracy can be impaired by: – An inadequate flow below the necessary value of approx. 30cm/sec.
6 | Bases for measurement DO-400 ter; the value is 0. A salinity of approx. 35 PSU is normal for sea water. The salinity correction is adjusted to aqueous media having a chemical composition corresponding to sea water. The International Oceanographic Tables (IOT) are used as a basis for the correction. 6.2.
DO-400 Bases for measurement | 6 3. Fill the pipette with the KOH electrolyte and initially fill the membrane head to ¾ full. Rinse off the excess electrolyte. 4. Slowly fill the sensor via the fill opening. In the process, tilt the sensor from side to side and tap the shaft to force out air bubbles. The sensor holds approximately 5 ml. If air bubbles no longer appear and the refill opening is filled up to the rim with KOH, screw the in the seal screw again. 5.
7 | Maintenance DO-400 7 Maintenance 7.1 Operating and maintenance notices NOTE If the product is stored at a temperature above 50 °C, or is not used for an extended period of time, the batteries must be removed. Leaks from the batteries are avoided as a result. NOTE The electrode should be stored in dry rooms at a temperature between 10 °C and 30 °C. If the storage temperature range is exceeded or undercut, the electrode can be destroyed. It should always be stored wet in distilled or deionised water.
DO-400 Maintenance | 7 NOTE Read the following handling instructions before replacing batteries and follow them step by step. If disregarded, the product could be damaged or the protection from moisture could be diminished. Description Proceed as follows to replace the batteries. Prerequisites – The product is switched off. Instruction 1. Unscrews the Phillips screws and remove the cover. 2. Carefully replace the two Mignon AA batteries.
7 | Maintenance Outcome of an action DO-400 After successful completion of the calibration the assessment of the electrode condition is displayed briefly in percent. An aged or contaminated electrode, incorrect adjustment of the pressure, contamination of the platinum electrode or a damaged membrane can be the cause for a lower evaluation. If the calibration is not completed successfully an error message is displayed. (AL ERR. appears in the display See Error and system messages [} p. 26].
DO-400 Operation | 8 8 Operation 8.1 Commissioning 8.1.1 Explanation The product is switched on with the On/Off button. It may be necessary to configure the product after switching on. See Configuration [} p. 21]. Description Prerequisite – Sufficiently full batteries are inserted in the product. Instruction – Press On/Off button. Outcome of an action Information about the configuration of the product appears in the display. POFF T.OF T.SL SAL Automatic shutoff Automatic shut-off activated.
8 | Operation DO-400 4. When you have selected the desired parameter, change the parameter to the desired value with the Up button and the Down button. 5. The changes are saved after running through the entire Configuration menu. STOR appears in the display. The Configuration menu can be exited from any arbitrary parameter by pressing and holding the Function key for 2 seconds. The changes made up that point are saved.
DO-400 Operation | 8 Shut-off time POFF OFF No automatic shut-off 15 30 60 120 240 Automatic shut-off after a selected time in minutes, during which no buttons have been pressed OFF Backlighting deactivated 15 30 60 120 240 Automatic shut-off of the backlighting after a selected time in seconds, during which no buttons have been pressed No automatic shut-off of the backlighting Backlighting L,TE ON Temperature unit UN,T °( Temperature display in °C °F Temperature display in °F Factory setting
8 | Operation DO-400 4. When you have selected the desired parameter, change the parameter to the desired value with the Up button and the Down button. 5. In order to save the new parameter value, press and hold the Function key for longer than 1 second. Representation Call up menu Hold Outcome of an action Release The Configuration menu is closed after the last parameter.
DO-400 Operation | 8 – Display in ice water setpoint T.OF = 0.0 °C – Display in water bath 36.6 °C – Display in water bath setpoint T.SL = 37.0 °C – T.OF = display zero point correction – setpoint zero point – T.OF = -0.2 °C – 0.0 °C = -0.2 °C – T.SL = (setpoint gradient correction / (display gradient correction – T.OF) – 1) *100 – T.SL = (37.0 °C / (36.6 °C – (-0.2)) -1) *100 = 0.54 Outcome of an action The changed value is saved and the Configuration menu is closed.
9 | Error and system messages DO-400 9 Error and system messages Display Meaning No display, Battery depleted unclear char- System error acters or no Product is defective response when buttons are pressed Battery depleted BAT BAT LO Battery depleted (AL ERR.2 Slope is too low (AL ERR.3 (AL ERR.4 (AL ERR.5 ERR.
DO-400 Disposal | 10 10 Disposal NOTE The device must not be disposed of with household waste. If the product is disposed of, please take it to a municipal collection point, where it will be transported to a disposal company in accordance with requirements of hazardous goods laws. Otherwise, return it to us, freight prepaid. We will then arrange for the proper and environmentally-friendly disposal. Please dispose of empty batteries at the collection points intended for this purpose. B-H86.0.21.DB214-1.
11 | Technical data DO-400 11 Technical data Measuring range Accuracy (at nominal temperature) O2 concentration 0.0 .. 20.0 mg/l O2 saturation 0 .. 200 % 0.0 .. 20.0 ppm ±1.5 % of measured value ±1.5 % of measured value ± 0.2 mg/l ± 0.2 % Temperature compensation 0 .. 50 °C (or 32 .. 122 °F) Nominal temperature Measuring cycle Connections Display 25°C approx.
DO-400 Service | 12 12 Service 12.1 Manufacturer If you have any questions, please do not hesitate to contact us: Contact VOLTCRAFT Distributed by Conrad Electronic SE Klaus-Conrad-Str. 1 92240 Hirschau, Germany Tel.: +49 9604 40 87 87 Fax: +49 180 5 312110 kundenservice@conrad.de WEEE reg. no. DE 28001718 B-H86.0.21.DB214-1.
