Hanna Instruments Hannah Instruments digital transmitter HI 504910 Manual do Utilizador Página 1

HI 504910Digital TransmitterInstruction Manual

18 19• Once selected the second calibration point, set the HI931001 (350 mV) or HI 8427 (350 or 1900 mV) simula-tor to the same value and the calibrat

20 21• Connect a HI 931001 or HI 8427 simulator to the BNCsocket.• Once entered the calibration mode,move through the menu with æ or key, select the

22 23Note The default password is set at “0000”.ENTERING SETUP ITEMSAfter confirmation of the password theprimary LCD will show the name of thefirst s

24 25Code Valid Values Default Present for ORPGENERAL (“GEnE”)G.00 pH/ORP input “PH”, “OrP

26 27sured magnitude is changed back later. The following setupitems cannot vary when changing from pH to ORP or viceversa (because they are items str

28 29Clean and check the electrode.• pH electrode broken or leakage (10) : The electrodeglass is broken or short circuits have been caused by moisture

30 31TEMPERATURE COMPENSATIONIf the setup item G.01 is set to “AtC” an automatic tempera-ture compensation will be performed using the temperaturevalu

32 33Note At any time pressing the DISPLAY key or (ALT+) SETUP keysthe meter will return to the regular operating display.• Press the æ or  ke

34 35• If an offset calibration has beenmade, the instrument will turn to“slope” calibration (as indicated bythe “SLO” message on the second-ary displ

36 37EVENT LOG FILE SCROLLINGThe event log file is composed of maximum 100 recordedevents, which include errors, calibration events (type of cali-brat

TABLE OF CONTENTSWARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . . 5

38 39RS485 COMMUNICATIONThe digital transmission of measurements, error and statusinformation is implemented through an RS485 link.The transmission ca

40 41If using HI 504 the fail safe resistors are already connectedon it, so they are necessary only if the HI 504910 transmitteris connected to a PC.T

42 43(*) C1C2C3C4 are ASCII chars corresponding to the setup itemcontent; P1P2 are two additional bytes used for sign and halfdigit as follows:P1= + i

44 45The meaning of B1 and B2 is:B2bit 0 green LED (1: ON; 0: OFF)B2bit 1,2 red LED (bit 2 = 0 and bit 1 = 0: LED is OFF; bit 2 = 1 and bit 1 = 0: LE

46 47buf1 ASCII string for a float (example: “7.01”)buf2 ASCII string for a float (example: “4.01”)When some of the above items is missing (for exampl

48 49desAmdesBm<ETX>”where m is the number of events. Each token is followedby a blank space, except the last one (“desBm”), directlyfollowed by

50 51MODEM CONNECTIONA momodem connection can be established betweenHI504910 and a remote computer over a telephone line. Itis possible to make two di

52 53SELFTEST PROCEDURESThe selftest procedure can be made only entering the setupmenu and selecting one of the items of the “tESt” group (t.00- t.03)

54 55LEDs TEST• To enter the LEDs test procedure select the setup item t.03and an “OFF” blinking message will appear on the LCD.• Press the æ (or 

56 57ELECTRODE CONDITIONING AND MAINTENANCEPREPARATIONRemove the electrode protective cap.DO NOT BE ALARMED IF ANY SALT DEPOSITS AREPRESENT.This is no

4 5PRELIMINARY EXAMINATIONRemove the instrument from the packing material and exam-ine it carefully to make sure that no damage has occurredduring shi

58 59- Make sure cable and connections are not damaged norlying in a pool of water or solution.• Slow Response/Excessive Drift: soak the tip in Hanna

60 61HI 7611 Stainless steel Pt1000 probe with standard 1/2’’ externalthreads on both ends for in-line and immersion installation;5 m (16.5’) cableHI

62 63Specifications HI 60542 HI 60545 HI 60501Electrode Holder Material PVC PVC PVCO-Ring Material NBR NBR NBRMin. & Max. Te

64 65CE DECLARATION OF CONFORMITYRecommendations for UsersBefore using this product, make sure that it is entirely suitable for theenvironment in whic

66 67USER NOTES

68MAN504910R3 05/05TECHNICAL SERVICE CONTACTSAustralia: Tel. (03) 9769.0666 • Fax (03) 9769.0699China: Tel. (10) 88570068 • Fax (10) 88570

6 71. Liquid Crystal Display2. ON/OFF key, to turn the HI 504920 on and off.3. ALT key, to activate alternate key functions4. DISPLAY / CAL DATA key,

8 9SPECIFICATIONSRange -2.00 to 16.00 pH-2000 to 2000 mV-30 to 130.0 ºCResolution 0.01 pH1 mV0.1 ºCAccuracy ±0.02 pH(@20°C/68°F) ±2 mV±0.5 ºCTypical E

10 11INSTALLATION• Remove the connectors protecting shield and wire the meteras explained below.• Power supply input (24V AC/DC): connect a 2-wire pow

12 13Note If the probe offset is outside the allowed limits, if the HI 504910transmitter is configured for ORP measurement, or if some othererror occu

14 15The pH calibration can not be performed if the pH electrodeis broken or leaking or the reference electrode is broken ordirty and an error is acti

16 17ing message “time-out”, then shows “WRONG” and it is notpossible to complete calibration.• At the end of calibration, with the meter set as pH co