User manual EUTECH INSTRUMENTS ALPHA PH 800 PHORP CONTROLLERTRANSMITTER

[. . . ] EUTECH INSTRUMENTS lpha-pH800 pH and ORP Controller/Transmitter Operating Instructions 68X216813 03/99 Preface Thank you for purchasing the lpha-pH800 series pH/ORP controller/transmitter. This manual serves to explain the use of the lpha-pH800 series pH/ORP controller/transmitter. The manual functions in two ways, firstly as a step by step guide to help the user operate the instrument. Secondly, it serves as a handy reference guide. [. . . ] The lower display shows the on-line measured pH value. The upper display shows the current offset value. 6) Press the or keys until the pH value coincides with the correct pH value noted in Step 2. As the or keys is pressed to adjust the pH value, the `offset' value in the upper display also changes. 7) Press the ENTER key to enter the offset value. Note: The offset value is reset during full calibration. See section 6 for full calibration instructions. Note: The offset parameter is blanked out during ORP operation. 14 7. 2 7. 2. 1 Setting temperature (Set oC) sub-function Selecting automatic or manual temperature compensation 1) Enter Advanced Set-up mode by pressing the ENTER key. 2) Press the or keys to scroll until the display shows "Set C". HOLD SETUP o SEt o 3) Press the ENTER key. The lower display shows "Atc"; the upper display shows "on" or "oFF" depending on whether or not ATC is selected. 4) Press the or keys to toggle between ATC on and off. 5) Proceed with additional Advanced Set-up procedures (press ENTER again) or return to Measurement mode by pressing the and keys (escape) simultaneously. SETUP HOLD SETUP HOLD C Atc on oFF Atc 7. 2. 2 Temperature calibration (ATC mode only) SETUP HOLD 1) Select "ATC on" as described above in Section 7. 2. 1. The upper display indicates the current temperature offset. The current measured temperature is shown in the SETUP on Atc lower display. 3) Compare the current measured temperature on the controller display to a thermometer known to be accurate. Note down the correct temperature value. HOLD 25. 0 ATCC 0. 0 o 15 4) Press the or keys to scroll the lower display to match the correct value. The upper display will now show the offset value. You can offset temperature up to ± 5 C. o 5) Press the ENTER key to confirm your selection. 6) Continue with additional Advanced Set-up procedures, or return to the Measurement mode by pressing the and keys (escape) simultaneously. 7. 2. 3 Setting manual temperature compensation operation. SETUP HOLD Note: This option is not available when the controller is set for ATC oFF Atc For manual temperature compensation, two different temperatures: process and calibration, can be input independently. This SETUP HOLD allows calibration at a temperature other than 25. 0 P. C the process temperature. Example: setting a calibration o temperature of 25 C o allows calibration using standard buffer solutions at SETUP HOLD 25. 0 C. C 25 C, even if the process temperature is different. [. . . ] 500 BNC Terminal blocks 5-pole / 17-pole, removable slow-blow 250 V / 100 mA According to EN 50081-1 According to EN 50082-1 0 to +50 oC 10 to 95%, non-condensing 175 x 96 x 96 mm max. 0. 7 kg ABS with polycarbonate (front housing) IP 54 / IP 40 24 9 ACCESSORIES Product Description Code no. Ryton-body pH combination electrode without ATC, EC-ARTSO05B without potential matching pin Ryton-body pH combination electrode without ATC, EC-ARHTTSO05B without potential matching pin, high temperature and pressure rating Ryton-body pH combination electrode without ATC, EC-ARGTSO05B with potential matching pin Ryton-body pH combination electrode with ATC (Pt EC-100GTSO05B 100), with potential matching pin Ryton-body ORP Gold combination electrode with EC-HTAUTSO05B potential matching pin Ryton-body ORP Platnium combination electrode EC-HTPTTSO05B with potential matching pin Note: Above pH/ORP electrodes can withstand a pressure up to 6 bar (except for ECARHTTSO05B ­ 9 bar). These electrodes have integral 5 meter measuring cable. [. . . ]