User manual EUTECH INSTRUMENTS ALPHA RES 1000 RESISTIVITY CONTROLLERTRANSMITTER

[. . . ] Instruction Manual lpha-RES1000 Resistivity Controller/Transmitter Technology Made Easy . . . 68X216807 rev 3 12/04 This instruction manual serves to explain the use of the lpha-RES1000 series Resistivity controller/transmitter. The manual functions in two ways: firstly as a step by step guide to help the user operate the instrument. This instruction manual is written to cover as many anticipated applications of the lpha-RES1000 Resistivity controller/transmitter. If you have doubts in the use of the instrument, please do not hesitate to contact the nearest Eutech Instruments' Authorised Distributor. [. . . ] Example: setting a calibration temperature of 25 oC lets you calibrate using standard buffer solutions at 25 oC, even if process temperature is different. Push ENTER key and scroll to Advanced Set-up security code "22". Push ENTER key and Press or keys to scroll till display shows "Set oC". 2) 3) Pressing the or keys keys toggle between ATC `on' or `off' (default setting is ATC on). Upper display shows current process temperature and lower display shows "P. oC" to indicate process temperature. HOLD SETUP Press or keys to adjust process temperature value from ­ 9. 9 to 125 oC. Upper display shows current calibration temperature and lower display shows "C. oC" to indicate calibration temperature. 25. 0 C. C 4) 6) Press or keys to adjust calibration temperature value, ­9. 9 to 125 oC. Press ENTER key. 12 Operating Instructions lpha-RES1000 7) Continue with additional Advanced Set-up procedures, or return to Measurement mode by pressing and keys (escape) simultaneously. 7. 3 Control Relay A/Control Relay B (SP1/SP2) sub-function SP1 option sets operating parameters for Relay A; and SP2 for relay B. Since these groups have the same set-up parameters, they are described together. HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP SP 1 7. 3. 1 1) 1. 00 SP 1 Lo SP 1 0. 20 HYS 0 On. d 0 Of. d Entering the Set point 1 (Set point 2) sub-function Enter Advanced Set-up mode. Push the ENTER key and scroll to Advanced Set-up security code "22". Press the or keys to scroll until the upper display shows SP1 (SP2). HOLD SETUP HOLD SETUP SP 1 2) 7. 3. 2 Selecting the set point values This lets you choose the value that will cause your controller to activate (Default: SP1 = 1. 00 m; SP2 = 19. 00 m). The upper display shows the current set point value and the lower display shows SP1 (SP2). 3) Press the or keys to select your value for Set point 1 (Set point 2). Press the ENTER key to confirm your selection. 1. 00 HOLD SETUP m SP 1 SP 1 Lo 4) 5) Proceed to 7. 3. 3, or return to Measurement mode by pressing the and keys simultaneously (escape). 7. 3. 3 Choosing High or Low set points When `Lo' is selected, the control relay is activated when the value is lower than SP1 (SP2). When `Hi' is selected, the control relay is activated when the value is higher than the set point (SP1/SP2). Using both SP1 and SP2, you can select lo/lo, lo/hi, hi/lo, or hi/hi set points (Default: SP1 = Lo; SP2 = Hi). 2) Press the ENTER key until the upper display shows Lo or Hi (for low or high set point) and the lower display shows SP1 (SP2). 3) Press or keys to select low (lo) or high (hi) set point for SP1 (SP2). Press ENTER key. 13 Operating Instructions lpha-RES1000 4) Proceed to 7. 3. 4, or return Measurement mode by pressing and keys simultaneously (escape). 7. 3. 4 Selecting a hysteresis (dead band) value (0. 000 to 0. 200 m or 0. 00 to 2. 00 m) Hysteresis prevents rapid contact switching if the value is fluctuating near the set point. It does this by overshooting the set point value to a specified hysteresis value (default is 0. 20 m). You can set the hysteresis value from 0. 000 to 0. 200 m or 0. 00 to 2. 00 m. Example: Set point 1 (Lo) is at 1. 00 m and hysteresis limit value is at 0. 20 m. If measured value undershoots low set point of 1. 00 m, relay activates, which in turn activates an external device such as a pump or valve. [. . . ] Note: If you wish to manually change the status of both relays, press RELAY SELECTION key at this point and repeat step 5 for second relay. This first relay will remain under manual control while you are setting the second relay. 5) 22 Operating Instructions lpha-RES1000 9 Technical Specifications Resistivity Range 0. 00 to 19. 99 m/cm 0. 000 to 1. 999 m/cm Resolution 0. 01 m/cm 0. 001 m/cm Default Cell Constant, K 0. 01 0. 1 -9. 9 to 125 oC 0. 1 oC ± 0. 5 oC Pt 1000/Pt 100 Auto / manual (reference at 25. 0 oC) Limit/Proportional controller 0 to 1999 sec. 600 VA 110 / 220 VAC (jumper selectable) 48 to 62 Hz 0/4 to 20 mA, galvanically isolated max. [. . . ]