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Summary of Contents for Lovibond SensoDirect pH200
- Page 1 SensoDirect pH200 pH-/Redox-/Temperature Meter Operating instructions...
- Page 2 Schleefstraße 8 a 44287 Dortmund Deutschland declares that this product Product name: SensoDirect pH200 with all optional items conforms to the following regulations: EN 55 022 : 6 / 1993 class B EN 50 082-1 (EN 61000-4-6, EN 61000-4-4, EN 61000-4-3,...
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Page 3: Table Of Contents
Table of Contents Page Scope of delivery .............. 4 System description ............4 Connections ..............5 Display ................7 Keypad ................7 Start up ................8 Measurement ..............9 Configuration of the unit ..........11 Selection of measuring function [pH] – [mV] – [Rel mV] ... 11 Calibration: selection of calibration ......... -
Page 4: Scope Of Delivery
1. Scope of delivery Standard: • pH Meter • Batteries, 4 x AA 1,5 V cells • Operating instructions • Carrying strap Set: • pH Meter • Batteries, 4 x AA 1,5 V cells • pH/Temperature sensor • Standard buffer solutions, each 90 ml pH 4.00/7.00/ 10.00 •... - Page 5 The permanent protective plating on the unit serves not just as impact protection but also as a storage compartment for the electrode and as an anti-slip de- vice when the meter is used in an upright position. Microprocessor technology and 4 x AA 1,5 V batte- ries allow unit operation without battery change for 15,000 hours or more.
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Page 6: Connections
An internal memory for 20 results is integrated in the unit as standard. The memory stores location, result and temperature. The memory is called up via the display. Rel mV °C °C MEAS HOLD °F Meas Hold Store Menu 3. Connections Temperature sensor “T”, 4mm 1-pin Temperature sensor “REF”... -
Page 7: Display
4. Display Main display: Result or user prompt Rel mV [mV] Redox voltage, absolute [Rel mV] Redox voltage, relative to the hydrogen electrode (DIN 38404) °C [pH] pH level °C MEAS Secondary display: Result - temperature °F HOLD or user prompt Percent (sensor evaluation) ∆... -
Page 8: Start Up
6. Start up The unit is supplied with integrated batteries as stan- dard and is therefore ready for immediate use. You have to unscrew the unit to insert or change the batteries. When inserting the batteries, ensure correct polarity! Screw the unit back together carefully without exer- ting too much pressure on the gasket seal. -
Page 9: Measurement
is defective, the display still shows pH or mV results. However, these results are not valid results! The electrode or temperature sensor must be plug- ged in before the unit is switched on. Switch the unit on via the [On/Off] key. The system must be calibrated when the system is started up (see Calibration). - Page 10 The display shows Auto/Hold in alternating mode to- gether with the result. Once a stable reproducible value is present, the result is shown permanently in the display (“frozen”). The display also shows HOLD and the automatically set or manually entered temperature. If you press the [Hold] key again, the measuring cycle Hold starts anew and runs until the stability criteria are met.
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Page 11: Configuration Of The Unit
8. Configuration of the unit To configure the unit, press the [Menu] key. The first menu item appears. Menu If you press the [Menu] key again, the display jumps to the next menu item. You can set the various parameters using the [▲] [▼] keys. -
Page 12: Calibration: Selection Of Calibration
8.2 CAL = Calibration: selection of calibration (only with pH function) You can choose between 1, 2 and 3-point calibration. 1-point calibration: Calibration of the pH electrode is performed at a ran- dom point. The electrode slope is always based on the theoreti- cal slope of -59.2mV/pH. - Page 13 Percentage calculation of the electrode status is ba- sed both on asymmetry potentials and on slopes (gra- dient of the pH characteristic) of the electrode. The electrode condition is then determined by the worst result. The admissible characteristic data of the pH electrodes are as follows: Asymmetry potential of the electrode at 25°C in mV Max.
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Page 14: Selection Of Temperature Unit °C /°F
8.4 Selection of temperature unit °C /°F • °C All temperature values in degrees Celsius • °F All temperature values in degrees Fahrenheit (°C = 0.556*°F-17.8 or °F = 1.8*°C+32) 8.5 Power off: automatic unit switch-off If no key is pressed during the switch-off delay peri- od, the unit switches off automatically after the selec- ted time has run down. - Page 15 • Tintometer standard series (25°C): pH 4.00, pH 7.00 and pH 10.00 • DIN 19266 series (25°C): pH 1.68 (A), pH 4.01 (C), pH 6.87 (D), pH 9.18 (F) and pH 12.45 (G) • or using any user-selectable buffers The shelf life of buffer solutions is limited and is shor- tened further by, among other things, inadequate cle- aning and drying of the electrode prior to insertion.
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Page 16: Starting Calibration: Press [Cal] Key
Performing calibration If you have not already done so, select the measuring mode 'pH' (see Configuration) and ensure that (de- pending on your requirements), 1-point, 2-point or 3- point calibration is active in the configuration setting Carefully remove the protective cap from the electro- Clean the electrode using deionised water and dry carefully. -
Page 17: Calibration Point 1: 'Cal. 1
DIN 19266 series Values at 25 °C: 1.68pH(A), 4.01pH(C), 6.87pH(D), 9.18pH(F),12.45pH(G) Manual buffer setting If you want to use buffers other than those in the Tin- tometer standard or DIN series, you can choose ma- nual buffer adjustment here. 9.3 Calibration point 1: 'CAL. 1' Insert the electrode and the temperature sensor (if present) in buffer solution 1 (e.g. -
Page 18: Calibration Point 2: 'Cal. 2
Without temperature sensor: manual input of temperature of solution 1 °C You can enter the actual temperature of the buffer so- lution using the keys. [▲] [▼] The value is stored when you press the [Store] key, and the system shows the next calibration step. Store In the case of 1-point calibration, the status of the elec- trode is then displayed (only asymmetry potential, slo-... - Page 19 lutions are used, the system automatically detects the pH value of the solution. If the display flashes and switches between different buffers, this means that no valid buffer has been de- tected. [CAL.2] appears in the secondary display until the va- lue is stable;...
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Page 20: Calibration Point 3: 'Cal. 3
9.5 Calibration point 3: 'CAL. 3' (only with 3-point calibration) Insert the electrode and the temperature sensor (if pre- sent) in buffer solution 3 (e.g. Tintometer standard se- ries pH 10.00). In the case of manual buffer setting, [Pt.1] appears in the secondary display. -
Page 21: Result Memory
You can enter the temperature of the third buffer solu- tion using the keys. [▲] [▼] The value is stored when you press the [STORE] key, and the status of the electrode is displayed. Store N.B.: A flashing display during manual buffer value input means that the selected buffer pairs are numerically too close. -
Page 22: Deleting Stored Results
You can use keys to switch between the stored [▲] [▼] results. As soon as you press the [STORE], [MEAS] or [HOLD] Store Hold key, the unit reverts to the corresponding measuring mode. 10.3 Deleting stored results If you press the [Store] key for longer than 2 seconds, the unit switches to the delete menu [CLR]. - Page 23 Display Cause Remedy No display Batteries are empty Insert new batteries or strange symbols. Batteries incorrectly Check batteries Unit does not react inserted when keys are System error Disconnect batteries, pressed wait for a short time, reconnect the batte- ries Unit defective Send in for repair Err.1...
- Page 24 pH-Calibration CAL.-Err.1 Asymmetry Clean electrode, inadmissible: re-calibrate Electrode defective If error repeated -> replace electrode Buffer solution Use fresh buffer unusable solution CAL.-Err.2 Slope too small Replace electrode Electrode defective Buffer solution Use fresh buffer unusable solution CAL.-Err.3 Slope too big Replace electrode Electrode defective Buffer solution...
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Page 25: Technical Data
12. Technical data • Indicating ranges: Temperature -10,0 ... +110,0°C/ 14.0 ... 230.0°F Resolution 0,1°C bzw. 0.1°F 0,00 ... 14,00 pH Resolution 0,01 pH Redox (ORP) -1999 ... +2000 mV - 1792 ... +2206 Rel mV(based on hydrogen system in acc. with DIN38404) Resolution 1 mV •... - Page 26 • Input current: <1 pA • Nominal temperature: 25°C • Operating temperature: 0 to +50°C • Storage temperature: -20 to +70°C • Memory: 20 result memory locations • Power supply: 4*1.5V batteries, type AA. Operating life up to >15000h (depending on measu- ring mode and battery type) •...
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Page 27: Accessories
721200 Lovibond ® SensoDirect pH200 Basic instrument ® 721220 Lovibond SensoDirect pH200 Set with Sensor Type 230 721225 pH Electrode Type 225, plastic, gel-filled 721230 pH Electrode Type 230 with temperature Sensor NTC 30 kOhm, plastic, gel-filled 721235 pH Electrode Type 235, glass, gel-filled... - Page 28 Tintometer GmbH Tintometer AG The Tintometer Limited Schleefstraße 8-12 Hauptstraße 2 Lovibond House / Solar Way D-44287 Dortmund CH-55212 Hausen AG Solstice Park / Amesbury, SP4 7SZ Tel.: (+49) (0)2 31 / 9 45 10 - 0 Tel.: (+41) (0)56 / 4 42 28 29 Tel.: (+44) 1980 / 664800 Fax.: (+49) (0)2 31 / 9 45 10 - 20 Fax: (+41) (0)56 / 4 42 41 21...
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