Water Technologies Strantrol® 887 HRR® Control System Product Data Sheet Description The Strantrol® 887 High Resolution Redox® control system dramatically improves disinfection monitoring and control in industrial process and cooling water applications. Comprised of our industry leading sensor technology, innovative sample flowcell, unique control algorithms, and on-site service and support, the Strantrol® 887 controller is the benchmark for ORP monitoring and control worldwide. The second relay can be configured to control a second feeder at an alternative setpoint, or to perform an automatic sensor wash function. The third relay can be set as a master alarm reporting high, low, or overfeed conditions. Each unit is equipped with three relays that can be configured in any combination for control, alarm or sensor wash. The unit’s (4) 4-20mA outputs may be used for direct data recording or transmitting data to a computer or distributed control system. In a typical installation, the first relay is set to On/Off or Time-Based Proportional (TBP) control. Time-Based Proportional control enables simple chemical feeders to mimic the accuracy of more complex PID control. Additionally, the Strantrol® 887 controller provides an external interrupt to accept a signal from a timer or sample stream flow switch, and a triggered input to accept a signal from a contacting water meter. Benefits of the Strantrol® 887 Controller Include: • Accurate and Reliable Redox Control • Optional Sensor Wash and Flow Switch for Peak Performance and Safety • User-Programmable Feed Modes to Meet Application Needs Inputs Sensor input: Range: Sensing accuracy: Resolution: Isolated HRR® sensor -500 mV to +1000 mV ± .1% per year 1 mV Digital Inputs: Contact Closure (Totalizer & ChemFeed trigger) Sample Flow Switch (Blowdown & ChemFeed enable) Outputs Analog outputs: (4) Isolated fully rangeable 4-20mA up to 750 ohms with record and control capabilities Three programmable relays for chemical control, alarm, sensor wash, or triggered timer function. 120/240 VAC, 50/60 Hz Two 5 Amp, one 1 Amp Resolution ± .5% Ratings User Interface ETL approved to UL® Standard 508A CE approved for heavy industrial use Voltage: 120/250 VAC, 50/60 Hz Total Current: 12 amps Display: 16 character backlit LCD display shows real time sensor readings, alarms, programming values and menus. Enclosure Rating: Dimensions: NEMA 4X (IP 66) (H x W x D) 7.1” x 7.2” x 4.4” in (180 x 182 x 111 mm) 2.1 pounds (0.95 kg) UL® Listed Polycarbonate Weight: Material: Keypad: 7 pressure sensitive keys for setting calibration, control setpoint, alarms, 420mA, triggered timer, totalizer, and sensor clean values. UP, DOWN, PREV, and ENTER keys for scrolling through menu and changing settings. CAL button for single point calibration. SETPOINT for changing the control value. MENU for more detailed configuration. Options Sample Flowcell Design ensures sensor remains wetted at all times. Flowcell comes complete with fittings, including two isolation valves and a sample tap. Flowcell cover is clear permitting on-line inspection of sensor tip. Material: Schedule 80 PVC Pressure: Tested to 100 psig (6.8 bar) Temperature: 1200F (48.80C) (Max) Cover: Clear Polycarbonate Automatic sensor washing: Recommended for high TDS applications such as recirculated cooling water. On-line sensor washing is available by requesting the optional diaphragm pump and tank package (part no. 7149002). Sample flow switch: The optional sample flow switch assures that when the sample stream is interrupted for any reason, the feed of chemicals is halted. This is a valuable safety device as well as a way to prevent overfeeding of chemical due to a trapped “dead” sample. 4 7/8” 9” 7” 4 3/8” 1/2” 1” 5/8” Strantrol® 887 HRR Controller 7 1/8” 21” 19” Strantrol, HRR and High Resolution Redox are trademarks of Siemens, its subsidiaries or affiliates. UL is a registrered trademark of Underwriters Laboratories, Inc. The information provided in this brochure contains merely general descriptions or characteristics of performance which in actual case of use do not always apply as described or which may change as a result of further development of the products. An obligation to provide the respective characteristics shall only exist if expressly agreed in the terms of the contract. 9” 2 1/8” 12 1/4” Siemens Water Technologies 595 Industrial Drive Bradley, IL 60915, USA 800.809.0971 phone www.usfilter.com firstname.lastname@example.org Literature No. ST-887-DS-0806 Subject to change without notice. ©2006 Siemens Water Technologies Corp.