Description The MERLIN CP Hemi Monitor is a compact unit designed to fit invisibly within a CP riser post. It collects Cathodic Protection (CP) data and communicates using the cellular GSM network. MERLIN CP Hemi records pipe-to-soil potentials and current levels, checks that they are within specification and reports immediately if an alarm threshold is exceeded. Alternatively it may simply be that certain measurement points on the pipeline create risks to CP technicians, such as at busy road or rail crossings, or are difficult to access, such as on private land. At these points remote monitoring is very cost-efficient and can improve safety. Two key features of the Abriox system are: Cellular telephone control, which is all that is required to set up and configure MERLIN CP Hemi monitors. This makes installation really quick and easy (typically just 20 minutes at a test post) without the need for any special equipment. AC monitoring on all channels to identify a possible corrosion threat - and protect the workforce from dangerous voltages or currents. All data is automatically transmitted in a management report to the system HQ where it is available on-line using Abriox’s MERLIN iCPSM software. ICPSM provides access from any internet-enabled PC to a passwordprotected CP database, unique to each customer. Users can configure and control MERLIN monitors, view CP data in graphical and numerical formats or export data for further analysis and archiving.   Benefits DC and AC monitoring for full corrosion prevention Fully automatic system - data sent in automatically, wirelessly Email or text message alarm when pipeline CP levels are inadequate Reduced cost of measurement, especially at remote locations Engineering time freed up for data interpretation and follow-up Reduced risk to workforce at dangerous or remote sites Compact size for easy installation inside the riser post Zero carbon footprint for CP monitoring - no vehicle surveys required   Features Designed for easy installation in the riser post—typically 20 minutes on site. Color-coded connections to pipe/electrode/ coupon. Daily CP level check (hourly option for problem solving). Alarms reported immediately (user preset thresholds for all channels). Weekly report gives min, max and average of all channels for the week. 5-year life, batteries replaceable. Sealed, weatherproof unit with robust lightning protection and wide operational temperature for all extremes. Test and set-up from cellular telephone using text messaging. Web-based user interface with graphical/tabular displays and data export.   GSM (SMS) Communications Batteyry Backup Test and set up from cell phone usingtext messaging 5 year life, replaceable battery module. User Alerts Synchronized Interruption Alarms reported immediately (user presetthresholds for all channels). Pair of relay contacts, normally closed. Contacts open whilst channel 2 is read. Electrical Supply Monitoring Custom Reports Alarm sent when protection levels inadequate – so that protection can quickly be restored to the pipeline. Data automatically archived and presented in custom report formats or exported to other standard applications. Daily or Weekly Reports Weight Weekly report gives min, max and averageof all channels for the week  520g (1.1lb) Operational Remperatures Lightning Protection -40°C to +85°C (-40°F to +185°F). 100% condensing humidity. Surge protection on all external inputs and outputs. 2,500A at 3,000V (8/20us). Additional protection using recommended surge arrestors. IP Rating The MERLIN CP Hemi Monitor is IP67 rated. Offering protection against falling dirt, rain, sleet, snow, windblown dust, splashing, hose-directed water and temporary immersion. Technical Specification The MERLIN CP Hemi Monitor is a compact, robust, long-life unit that monitors cathodic protection levels at a cylindrical test post. Its key features are: Narrow diameter fits invisibly within cylindrical riser DC and AC monitoring for full corrosion prevention Alarm sent when protection levels inadequate Reduced cost of measurement, especially at remote locations Engineering time freed up for data interpretation and follow-up Health & Safety – reduced risk at roads/properties, eliminates lone-worker issues •Zero carbon footprint for CP monitoring – no vehicle surveys, fully automatic system   Physical Dimensions Physical Dimensions (H x W x D) 10.8” x 3.15” fits invisibly within standard 3.5” riser post Weight 1.1lb IP Rating IP67 Operating Temperature -40°F to +185°F 100% condensing humidity Lightning Protection Surge protection on all external inputs and outputs 2,500A at 3,000V (8/20us) Backup Battery 5-year life, replaceable battery module Communications Cellular (GSM/SMS) Software Management iCPSM (web based) or CPSM (PC based) Inputs Two pipe-to-soil inputs 10 MOhm input impedance ± 4V DC with AC rejection 1mV resolution 0-70V AC RMS, 10mV resolution Current shunt input 0-100mV 0.01mV resolution AC and DC current measured All monitoring channels are fully independent Outputs Pair of relay contacts, normally closed Contacts open while pipe to soil input 2 is read Contacts rated at 1A at 30V DC MERLIN CP Hemi can be deployed at any test point on the pipeline network, such as: mid-points between rectifiers or pipeline terminations (low CP levels), pipeline crossings or corridors (sources of interference from foreign systems), pipelines close to, or parallel with, power lines (sources of AC interference) and rectifier drain points (to check rectifier output levels).     Measurements   Pipe-to-Soil 1 Pipe-to-Soil 2orInstant OFF  Coupon Current orBond Current    DC AC DC AC DC AC 1 Channel 2 Channel 3 Channel