MerMaid Datalogger Installation
HYDRAULIC & ELECTRICAL DATA RECORDER
The MerMaid hydraulic and electrical datalogger is a very small AC and battery powered datalogger that is able to monitor 3 phases for 3 motors, plus 4 digital inputs and one analog input. It reads every input 10 times per second. A reading is recorded only when its value has changed. This way for most lift stations it is possible to record one month of data before the newest data replaces the oldest. Each motor input can be used to record frequency, current or voltage. This device, which was created to do the best pump station diagnostic available is also perfect for preventive maintenance and troubleshooting electrical equipment. It can tell which motor, pump or equipment will fail next. It can find intermittent problems in minutes instead of hours or days without replacing parts.
Compact in size this datalogger can be hidden in the electrical panel and work two weeks on 2C batteries.
- Extraordinary quantity of useful data
- Easy installation – Station stays in operation during installation
- Fast setup and no calibration required.
- Cellular Wireless and other communication formats available
- Economical, compact solution for flow monitoring.
- High degree of accuracy.
- Easy installation, no profiling required.
- Staggering storage capacity.
- Dynamic logging intervals ensures data is collected as conditions change.
- Optional rainfall logging feature records and characterizes rain events.
- Disconnectable sensor for quick and easy field replacement.
- On-site sensor operation verification prior to leaving the site.
- Information Program
- Billing / Custody Transfer
- Capacity Studies
- Collection Systems
- Combined Sewer Overflows (CSO) Studies and Monitoring
- Inflow and Infiltration (I&I) Studies
- Short Term and Long-Term Flow Monitoring
- NPDES Stormwater Compliance
- Permanent Collection System Monitoring
- Plant Influent and Effluent
- Sanitary Sewer Evaluation Studies
|NAME / PART NO.||MERMAID DATALOGGER / MLMMD|
|Product type||Multiple motor electrical recorder|
|Types of data recorded
(always time stamped)
|Based on sensor selection, but usually frequency, current, voltage, rain, analog and digital inputs, etc.|
|Number of digital inputs||4, with reserved for rain|
|Reading speed of digital input||10 Hz|
|Analog inputs||1 software set to 4-20mA or 0-5V, 9 electrical|
|Type of electrical inputs||9 inputs for current, voltage or analog modules (4-20mA, 0-5V, 0-10V, 0-24V)|
|Analog input reading speed||10 Hz|
|Analog input accuracy||± 0.1 %. This do not include the sensor precision|
|Digital output||1, activated with alarm setup or remote manually.|
|Internal temperature sensor accuracy||± 3°C|
|Memory (number of records)||500,000|
|External power||3 VDC 1 Amp|
|Operation time on batteries||2 weeks|
|Type of batteries||2 types C alcalines batteries or rechargeables|
|Integrated battery charger||YES|
|Download||RS232, USB using a cable converter, Land line modem, cellular modem, Ethernet using Serial converter|
|Communication Interface||RS232 (DB9)|
|Installation Options||DIN Rail|
|Dimension (inches)||3 x 2.5 x 6.75|
|Dimensions (cm)||8 x 6.5 x 17.2|
|Weight including 2 type C batteries||1 lb/0.45 kg|
|Warranty||3 years, parts and labor|
|MLPS1||90-240V AC 3 VDC 2 A|
|Connectors (for current sensors)|
|MLCTA6||Connector for 3 MLCT150 or MLCT300|
|MLCT5-15-75||Mini current sensor with selector 5A, 15A and 75A|
|MLCT150||Current Clamps 150 Amps|
|MLCT300||Current Clamps 300 Amps|
|MLCTP1500||Precision current sensors 1500Amps|
|Voltage sensor and accessories|
|MLPT600||3 phases 670 Volts voltage transformer|
|MLPTCBLY||Wires and clamps for Wye configuration|
|MLPTCBLD||Wires and clamps for Delta configuration|
|Analog input converters
(to use on motor inputs)
|MLAI420A||4-20mA analog input converter|
|MLAI05V||0-5V analog input converter|
|MLAI010V||0-10V analog input converter|
|MLAI024V||0-24V analog input converter|
|MLUSB232||USB to RS-232 serial adaptor|
|MLCB232MF6||RS-232 extension cable 6′|
|MLERS232||Ethernet-Serial RS232 Interface|
|MCELETH||Cellular Modem with Ethernet port|
|MLRG1||Rain gauge NWS approved|
|MLCASE1||Aluminum briefcase with moulded separators|
|MLPL||Wastewater pressure sensor for level and force main|
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Summary page for MerMaid and Volucalc VS