CartEnviroMon takes readings from a number of sensors. These sensors are connected to converters that transform the analogue signals from the sensor into digital signals: these digital signals can then be transmitted reliably and accurately to the logger over long or short distances.
Which converter is best for your application depends on what you wish to measure.
This page describes the available converters and sensors.
3 Channel Converters (Temperature and Switch Position)
EL001 Three channel converter
The three channels on the EL001 can measure any mix of temperature or switch position. The following sensors are available, all have 5 meter leads for connecting to the converter.
- EL029 Switch position / door switch sensor The switch module is commonly used to monitor whether a door is open or closed. In normal use a (supplied) magnet is attached to the door to be monitored and the EL029 to the door frame. Alternatively an external microswitch (not supplied) can be wired in. The display on the logger reports either 'Open' or 'Closed'.
- EL015 Temperature sensor The EL015 is a precision resistive sensor suitable for measuring temperature from -30°C to +70°C. Unless the temperature you need to measure is outside this range this sensor represents the best choice for measuring temperature.
(The EL001 is not waterproof)
| EL015 Temperature | EL029 (Door) switch | |
|---|---|---|
| Range | -30 °C to 70 °C | Closed / Open |
| Resolution | 0.01 °C | NA |
| Accuracy | ± 0.3 °C | NA |
| Dimensions | 6 mm by 50 mm on a 5 m lead | 72 x 45 x 28 mm with a 5 m lead |
| Price | £18.00 $36.00* / €23.40* | £20.00 $40.00* / €26.00* |
EL041 Thermocouple Converter
The 4 channel EL041 thermocouple converter is designed to measure a wide range of temperatures with any thermocouple that uses a miniature size thermocouple connector.
Featuring built-in cold junction compensation (CJC), the EL041 has an effective temperature range of -270 to 1820°C (The actual temperature range depends on the thermocouple being used.)
In addition to temperature measurement, the cold junction compensation can be switched off to enable the EL041 to measure ±60mV signals.
Note: The EL041 is designed to work only with the EL005 logger.
| EL041 Thermocouple Converter Specifications | |
|---|---|
| Number of Channels | 4 |
| Thermocouples Supported | B, E, J, K, N, R, S, T or mV |
| Voltage Input Range | ±60 mV |
| Resolution | 15 bits + sign |
| Accuracy | Thermocouples: ±(0.5 °C + 0.3 % of type K reading) Millivolts: ±0.3 % |
| Conversion Time | 1 second |
| Overload Protection | ±10 V |
| Input Connector | Mini-thermocouple plugs |
| PC Connector | via EnviroMon network |
| Operating Temperature | 0 to 70 °C (20 to 30 °C for quoted accuracy |
| Operating Humidity | 25 to 75 %RH |
Humidity / Temperature Converter
EnviroMon can measure humidity/temperature using the EL026 converter and EL030 temperature and humidity sensor. Each EL030 is calibrated for high accuracy measurements.
| Sensor | Range | Accuracy | Resolution |
|---|---|---|---|
| Temperature | -20 to 70 °C | ± 0.2 °C (0-70 °C) +/- 0.3 °C(rest of range) | 0.01 °C |
| Humidity | 0 to 95 % non-condensing | ± 2.5 % (0 to 90 %) | 0.01 % |
Current Monitoring
EL040 Current Monitor
With the present drive towards energy efficiency the EL040 will find uses both at home and in industry. In industry currents can be monitored enabling more accurate costing to be placed on different tasks and find out exactly where a high percentage of current consumption is being made. Armed with this information decisions can then be made on methods of reducing or eliminating this in-efficiency, so saving money.
The EL040 enables an EnviroMon network to monitor three AC current signals. AC current clamps or current transformers are used to provide an input to the EL040. The EnviroMon can then be used to monitor current consumption or produce alarm conditions when consumption rises above or falls below preset limits.
| EL040 Current Monitor Specifications | |
|---|---|
| Number of channels | 3 |
| Sensor type | Current clamp |
| Max. input voltage | 1 V RMS AC |
| Input Impedance | >1 MΩ |
| Frequency range | 20 Hz to 1 kHz |
| Accuracy | ± 1 % (0 to 200 mV)* ± 2.5 % (200 mV to 1 V) |
| Operating temperature | 0 °C to +70 °C |
| Input connector | 4 mm banana |
* When using a 200 Amp current clamp which measures 1 Amp per mV.
TA011 300 Amp AC Current Clamp
Not being powered by batteries the TA011 is ideally suited to applications where current consumption is being monitored over long periods of time.
Removing the need to check the condition of the batteries regularly, makes the TA011 ideally suited for use with the EL040 current monitor when monitoring current consumption over months or even years.
| TA011 Current Clamp Specifications | |
|---|---|
| Current range | 0.1 A to 300 A RMS AC |
| Accuracy: 0.1 to <50A 50A to 300A | ± 3.0 % ± 2.0 % |
| Output voltage | 1 mV AC per 1 Amp AC |
| Operating temperature | 0 °C to 50 °C |
| Maximum conductor size | 29 mm |
General Purpose Converters (Voltage / Current Inputs)
Converters for voltage, current (4 - 20 mA) and resistance are available for OEM customers - contact Pico for more information.
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