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. Secondly, it serves as a handy reference guide. This instruction manual is written to cover as many anticipated applications of the lpha-RES1000 Resistivity controller/transmitter. [. . . ] 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). Your controller will activate at the value you select. 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). 1) Follow directions in 7. 3. 1 to enter Control Relay mode. 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. Actions of the external device will cause the value to rise above 1. 00 m. When the value has increased to 1. 20 m, relay, and hence the pump will switch off. HOLD SETUP HYS 4) 5) 20 1) 2) µS 3) Follow directions in 7. 3. 1 to enter Control Relay mode. The upper display shows the hysteresis (dead band) value and the lower display shows "HYS". Press or keys to enter hysteresis value for Set point 1 (Set point 2). Controller will activate at the value selected. Note: All settings for SP1 and SP2 are completely independent of each other. Press ENTER key to confirm your selection. Proceed to 7. 3. 5, or return to Measurement mode by pressing the and keys simultaneously (escape). NOTE: Please refer to Appendix 4 for a graphical representation of the Hysteresis. [. . . ] 0 to 10% of Full Scale 2 potential-free change-over contacts max. 600 VA 110 / 220 VAC (jumper selectable) 48 to 62 Hz 0/4 to 20 mA, galvanically isolated max. 600 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 65 Temperature Resolution Relative Accuracy Sensor Temperature Compensation Set-point and Controller Functions Controller characteristics Pickup / Dropout delay Switching Condutivity hysteresis Contact outputs, controller Switching voltage Switching current Switching power Alarm/Wash Functions Function (switchable) Pickup delay Switching voltage Switching current Switching power Electrical Data and Connections Power Requirements Frequency Signal Output Signal Output Load Connection terminal Mains fuse / fine wire fuse EMC Specifications Emissions Susceptibility Environmental Conditions Ambient temp. [. . . ]