Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for ORBECO SensoDirect pH 200
Summary of Contents for ORBECO SensoDirect pH 200
- Page 1 SensoDirect pH 200 pH-/Redox-/Temperature Meter Operating instructions...
-
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 ........12 Display of electrode status ..........12 Selection of temperature unit °C /°F ........14 Power off: automatic unit switch-off .........14... -
Page 4: Scope Of Delivery
1. Scope of delivery Standard: • Orbeco-Hellige SensoDirect pH 200 • Batteries, 4*AA 1,5 V cells • Operating instructions • Carrying strap Set: • Orbeco-Hellige SensoDirect pH 200 • Batteries, 4*AA 1,5 V cells • pH/Temperature sensor • Standard buffer solutions, each 90 ml pH 4.00/7.00/ 10.00 • Carrying case • Operating instructions • Carrying strap 2. System description The system is a sturdy, water-tight handheld meter designed for daily measurements in the area of field or laboratory analysis. - Page 5 The permanent protective plating on the unit serves not just as impact protection but also as a storage com- partment for the electrode and as an anti-slip device when the meter is used in an upright position. Microprocessor technology and 4 x AA 1,5 V batteries allow unit operation without battery change for 15,000 hours or more. A „Low Bat” indicator in the display shows the user when it is time to change the batteries.
-
Page 6: Connections
unit as standard. The memory stores location, result and temperature. The memory is called up via the display. mmHg hPa mg/l %O2 Rel mV °C °C °C °C MEAS MEAS °F °F HOLD HOLD 3. Connections Temperature sensor “T”, 4mm 1-pin Temperature sensor “REF” and separately routed reference electrode, if present, 4mm 1-pin pH or redox electrode, HF socket in acc. -
Page 7: Display
4. Display Main display: Result or user prompt Rel mV [mV] Redox voltage, absolute [Rel mV] Redox voltage, relative to the °C hydrogen electrode (DIN 38404) [pH] pH level °C MEAS Secondary display: Result - temperature °F HOLD or user prompt Percent (sensor evaluation) ∆ Warning index - battery/ one-point calibration [°C,°F] Temperature unit [ATC]... -
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 exerting too much pressure on the gasket seal. -
Page 9: Measurement
The electrode or temperature sensor must be plugged 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). Following measurement, please switch the unit off using the [On/Off] key. - Page 10 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 starts anew and runs until the stability criteria are Hold met. Temperature measurement, automatic temperature compensation (ATC) During pH measurement and redox measurement (relative to the hydrogen electrode [Rel mV]), it is ne- cessary to compensate for the temperature effect of the electrode.
-
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. Press the [Store] key to store and conclude configu- ration. Store The unit then switches back to measuring mode. You can terminate the configuration process by pres- sing the [Meas] or [Hold] key. -
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 calibrati- 1-point calibration: Calibration of the pH electrode is performed at a random point. The electrode slope is always based on the theoretical slope of -59.2mV/pH. 2-point calibration: Calibration of the pH electrode is performed at two points. - Page 13 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. admissible range: +30...-30 mV Optimum: 0 mV...
-
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 period, the unit switches off automatically after the selected time has run down. The desired delay time is entered in minutes. If P.oFF = oFF, automatic unit switch-off is inactive. 9. Calibration of pH measurement The individual sensor characteristics of pH electrodes are affected by ageing which causes fluctuations. - 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 cleaning and drying of the electrode prior to insertion. This can lead to incorrect calibration! You should therefore always use fresh buffer solutions for calibra- tion wherever possible and clean the electrode using...
-
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 (depen- ding on your requirements), 1-point, 2-point or 3-point calibration is active in the configuration setting Carefully remove the protective cap from the elec- trode. Clean the electrode using deionised water and dry carefully. 9.1 Starting calibration: Press [Cal] key. ‘CAL’... -
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 Tintometer 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 solution 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 electrode is then displayed (only asymmetry potential, slope optimal = 59.2 mV/pH);... - Page 19 solutions 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 detected. [CAL.2] appears in the secondary display until the value is stable; the detected buffer value is then automatically stored. You are then requested to perform the next calibration step. In the case of 2-point calibration, the status of the electrode is then displayed (asymmetry potential and slope);...
-
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 present) in buffer solution 3 (e.g. Tintometer standard series pH 10.00). In the case of manual buffer setting, [Pt.1] appears in the secondary display. You enter the pH value of buffer solution 3 using the keys. -
Page 21: Result Memory
The value is stored when you press the [STORE] key, and the status of the electrode is displayed. N.B.: A flashing display during manual buffer value input Store means that the selected buffer pairs are numerically too close. The difference between two buffer solutions must be at least pH 2.00. 10. -
Page 22: Deleting Stored Results
As soon as you press the [STORE], [MEAS] or [HOLD] key, the unit reverts to the corresponding measuring mode. Store Hold 10.3 Deleting stored results If you press the [Store] key for longer than 2 seconds, the unit switches to the delete menu [CLR]. Store You can use the keys to select the desired action [▲] [▼] and press the [Store] key to execute it. The unit then returns to the corresponding measuring mode. - 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 Exceeds Check: can value measuring range exceed admissible measuring range? ->...
- 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 Use fresh buffer unusable solution CAL.-Err.4...
-
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 pH 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 • Accuracy: (at nominal temperature, unit ±1digit) Temperature ±0,2°C (0..50°C), otherwise ±0,4°C pH ±0,01 pH... - 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) •...
-
Page 27: Accessories
13. 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 721240 ORP Electrode, Type 240, plastic, gel-filled 721245 Temperatur Sensor Pt 1000 721250 pH Buffer-Set 4.00/7.00/10.00 (25°C) 721252 pH Buffer 4.00 (25°C) 1 Litre 721254 pH Buffer 7.00 (25°C) 1 Litre... - Page 28 Orbeco-Hellige Inc., 6456 Parkland Drive, Sarasota, Florida 34243, Phone 941-756-6410, Fax 941-727-9654, service@orbeco.com, www.orbeco.com...